* Re: [PATCH 5/5] backports: add signature verification code
2017-10-12 21:00 ` [PATCH 5/5] backports: add signature verification code Johannes Berg
2017-10-12 21:42 ` Johannes Berg
@ 2017-10-13 9:02 ` Arend van Spriel
2017-10-13 9:09 ` Johannes Berg
1 sibling, 1 reply; 20+ messages in thread
From: Arend van Spriel @ 2017-10-13 9:02 UTC (permalink / raw)
To: Johannes Berg, backports; +Cc: Johannes Berg
On 12-10-17 23:00, Johannes Berg wrote:
> From: Johannes Berg <johannes.berg@intel.com>
>
> Uh, this was awful. Because the crypto/ things are completely
> impossible to backport, I've actually implemented this by using
> mbedtls and embedding the relevant functions it has...
Interesting approach. I guess the crypto/ things would simply pull in
too much new kernel stuff in the compat layer. So how much does mbedtls
add to compat.ko?
Regards,
Arend
> The mbedtls code is taken from mbedtls version 2.6.0 and only
> minimally modified (mostly to remove <string.h> and similar).
>
> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
> ---
> backport/backport-include/keys/asymmetric-type.h | 46 +
> backport/backport-include/keys/system_keyring.h | 10 +
> backport/backport-include/linux/key.h | 64 +
> backport/backport-include/linux/verification.h | 28 +
> backport/compat/.gitignore | 1 +
> backport/compat/Kconfig | 26 +
> backport/compat/Makefile | 29 +
> backport/compat/verification/asn1parse.c | 393 ++++
> backport/compat/verification/bignum.c | 2447 ++++++++++++++++++++
> backport/compat/verification/key.c | 151 ++
> backport/compat/verification/mbedtls/asn1.h | 344 +++
> backport/compat/verification/mbedtls/bignum.h | 760 ++++++
> backport/compat/verification/mbedtls/bn_mul.h | 887 +++++++
> backport/compat/verification/mbedtls/config.h | 15 +
> backport/compat/verification/mbedtls/md.h | 356 +++
> backport/compat/verification/mbedtls/md_internal.h | 116 +
> backport/compat/verification/mbedtls/oid.h | 572 +++++
> backport/compat/verification/mbedtls/pk.h | 618 +++++
> backport/compat/verification/mbedtls/platform.h | 12 +
> backport/compat/verification/mbedtls/rsa.h | 672 ++++++
> backport/compat/verification/mbedtls/sha1.h | 135 ++
> backport/compat/verification/mbedtls/sha256.h | 140 ++
> backport/compat/verification/md.c | 471 ++++
> backport/compat/verification/md_wrap.c | 577 +++++
> backport/compat/verification/oid.c | 709 ++++++
> backport/compat/verification/pkcs7-asn1.c | 355 +++
> backport/compat/verification/pkcs7-asn1.h | 27 +
> backport/compat/verification/public_key.c | 124 +
> backport/compat/verification/rsa.c | 1872 +++++++++++++++
> backport/compat/verification/rsapubkey-asn1.c | 38 +
> backport/compat/verification/rsapubkey-asn1.h | 15 +
> backport/compat/verification/sha256.c | 458 ++++
> backport/compat/verification/verify.c | 65 +
> backport/compat/verification/x509-asn1.c | 182 ++
> backport/compat/verification/x509-asn1.h | 22 +
> backport/compat/verification/x509_akid-asn1.c | 144 ++
> backport/compat/verification/x509_akid-asn1.h | 15 +
> copy-list | 13 +
> patches/verify.patch | 86 +
> 39 files changed, 12995 insertions(+)
> create mode 100644 backport/backport-include/keys/asymmetric-type.h
> create mode 100644 backport/backport-include/keys/system_keyring.h
> create mode 100644 backport/backport-include/linux/key.h
> create mode 100644 backport/backport-include/linux/verification.h
> create mode 100644 backport/compat/.gitignore
> create mode 100644 backport/compat/verification/asn1parse.c
> create mode 100644 backport/compat/verification/bignum.c
> create mode 100644 backport/compat/verification/key.c
> create mode 100644 backport/compat/verification/mbedtls/asn1.h
> create mode 100644 backport/compat/verification/mbedtls/bignum.h
> create mode 100644 backport/compat/verification/mbedtls/bn_mul.h
> create mode 100644 backport/compat/verification/mbedtls/config.h
> create mode 100644 backport/compat/verification/mbedtls/md.h
> create mode 100644 backport/compat/verification/mbedtls/md_internal.h
> create mode 100644 backport/compat/verification/mbedtls/oid.h
> create mode 100644 backport/compat/verification/mbedtls/pk.h
> create mode 100644 backport/compat/verification/mbedtls/platform.h
> create mode 100644 backport/compat/verification/mbedtls/rsa.h
> create mode 100644 backport/compat/verification/mbedtls/sha1.h
> create mode 100644 backport/compat/verification/mbedtls/sha256.h
> create mode 100644 backport/compat/verification/md.c
> create mode 100644 backport/compat/verification/md_wrap.c
> create mode 100644 backport/compat/verification/oid.c
> create mode 100644 backport/compat/verification/pkcs7-asn1.c
> create mode 100644 backport/compat/verification/pkcs7-asn1.h
> create mode 100644 backport/compat/verification/public_key.c
> create mode 100644 backport/compat/verification/rsa.c
> create mode 100644 backport/compat/verification/rsapubkey-asn1.c
> create mode 100644 backport/compat/verification/rsapubkey-asn1.h
> create mode 100644 backport/compat/verification/sha256.c
> create mode 100644 backport/compat/verification/verify.c
> create mode 100644 backport/compat/verification/x509-asn1.c
> create mode 100644 backport/compat/verification/x509-asn1.h
> create mode 100644 backport/compat/verification/x509_akid-asn1.c
> create mode 100644 backport/compat/verification/x509_akid-asn1.h
> create mode 100644 patches/verify.patch
>
> diff --git a/backport/backport-include/keys/asymmetric-type.h b/backport/backport-include/keys/asymmetric-type.h
> new file mode 100644
> index 000000000000..7c0fafe9aa07
> --- /dev/null
> +++ b/backport/backport-include/keys/asymmetric-type.h
> @@ -0,0 +1,46 @@
> +#ifndef __BP_ASYMMETRIC_TYPE_H
> +#define __BP_ASYMMETRIC_TYPE_H
> +#ifdef CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION
> +#include <linux/slab.h>
> +
> +struct asymmetric_key_id {
> + unsigned short len;
> + unsigned char data[];
> +};
> +
> +struct asymmetric_key_ids {
> + struct asymmetric_key_id *id[2];
> +};
> +
> +static inline bool asymmetric_key_id_same(const struct asymmetric_key_id *kid1,
> + const struct asymmetric_key_id *kid2)
> +{
> + if (!kid1 || !kid2)
> + return false;
> + if (kid1->len != kid2->len)
> + return false;
> + return memcmp(kid1->data, kid2->data, kid1->len) == 0;
> +}
> +
> +static inline struct asymmetric_key_id *
> +asymmetric_key_generate_id(const void *val_1, size_t len_1,
> + const void *val_2, size_t len_2)
> +{
> + struct asymmetric_key_id *kid;
> +
> + kid = kmalloc(sizeof(struct asymmetric_key_id) + len_1 + len_2,
> + GFP_KERNEL);
> + if (!kid)
> + return ERR_PTR(-ENOMEM);
> + kid->len = len_1 + len_2;
> + memcpy(kid->data, val_1, len_1);
> + memcpy(kid->data + len_1, val_2, len_2);
> + return kid;
> +}
> +
> +extern struct key *find_asymmetric_key(struct key *keyring,
> + const struct asymmetric_key_id *id_0,
> + const struct asymmetric_key_id *id_1,
> + bool partial);
> +#endif
> +#endif /* __BP_ASYMMETRIC_TYPE_H */
> diff --git a/backport/backport-include/keys/system_keyring.h b/backport/backport-include/keys/system_keyring.h
> new file mode 100644
> index 000000000000..00d2bfffa835
> --- /dev/null
> +++ b/backport/backport-include/keys/system_keyring.h
> @@ -0,0 +1,10 @@
> +#ifndef __BP_SYSTEM_KEYRING_H
> +#define __BP_SYSTEM_KEYRING_H
> +#ifndef CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION
> +#include_next <keys/system_keyring.h>
> +#else
> +#include <linux/key.h>
> +
> +#define is_hash_blacklisted(...) 0
> +#endif /* CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION */
> +#endif /* __BP_SYSTEM_KEYRING_H */
> diff --git a/backport/backport-include/linux/key.h b/backport/backport-include/linux/key.h
> new file mode 100644
> index 000000000000..31d3d820dbb6
> --- /dev/null
> +++ b/backport/backport-include/linux/key.h
> @@ -0,0 +1,64 @@
> +#ifndef __BP_KEY_H
> +#define __BP_KEY_H
> +#ifndef CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION
> +#include_next <linux/key.h>
> +#else
> +#include <linux/types.h>
> +#include <linux/refcount.h>
> +#include <linux/list.h>
> +#include <keys/asymmetric-type.h>
> +
> +struct key {
> + refcount_t refcount;
> + const char *description;
> + s32 serial;
> + struct list_head list;
> +
> + struct asymmetric_key_ids kids;
> + struct public_key *public_key;
> + struct public_key_signature *sig;
> +
> + bool keyring;
> +};
> +
> +typedef struct __key_reference_with_attributes *key_ref_t;
> +
> +static inline key_ref_t make_key_ref(const struct key *key,
> + bool possession)
> +{
> + return (key_ref_t) ((unsigned long) key | possession);
> +}
> +
> +static inline struct key *key_ref_to_ptr(const key_ref_t key_ref)
> +{
> + return (struct key *) ((unsigned long) key_ref & ~1UL);
> +}
> +
> +#define key_put LINUX_BACKPORT(key_put)
> +extern void key_put(struct key *key);
> +
> +static inline void key_ref_put(key_ref_t key_ref)
> +{
> + key_put(key_ref_to_ptr(key_ref));
> +}
> +
> +#define key_create_or_update(keyring, type, desc, payload, plen, perm, flags) \
> + bp_key_create_or_update(keyring, desc, payload, plen)
> +
> +extern key_ref_t bp_key_create_or_update(key_ref_t keyring,
> + const char *description,
> + const void *payload,
> + size_t plen);
> +
> +#define keyring_alloc(desc, uid, gid, cred, perm, flags, restrict, dest) \
> + bp_keyring_alloc();
> +
> +extern struct key *bp_keyring_alloc(void);
> +
> +static inline s32 key_serial(const struct key *key)
> +{
> + return key ? key->serial : 0;
> +}
> +
> +#endif /* CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION */
> +#endif /* __BP_KEY_H */
> diff --git a/backport/backport-include/linux/verification.h b/backport/backport-include/linux/verification.h
> new file mode 100644
> index 000000000000..10e1bcfb2c00
> --- /dev/null
> +++ b/backport/backport-include/linux/verification.h
> @@ -0,0 +1,28 @@
> +#ifndef __BP_VERIFICATION_H
> +#define __BP_VERIFICATION_H
> +#include <linux/version.h>
> +#ifndef CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION
> +#include_next <linux/verification.h>
> +#else
> +#include <linux/key.h>
> +
> +enum key_being_used_for {
> + VERIFYING_MODULE_SIGNATURE,
> + VERIFYING_FIRMWARE_SIGNATURE,
> + VERIFYING_KEXEC_PE_SIGNATURE,
> + VERIFYING_KEY_SIGNATURE,
> + VERIFYING_KEY_SELF_SIGNATURE,
> + VERIFYING_UNSPECIFIED_SIGNATURE,
> + NR__KEY_BEING_USED_FOR
> +};
> +
> +extern int verify_pkcs7_signature(const void *data, size_t len,
> + const void *raw_pkcs7, size_t pkcs7_len,
> + struct key *trusted_keys,
> + enum key_being_used_for usage,
> + int (*view_content)(void *ctx,
> + const void *data, size_t len,
> + size_t asn1hdrlen),
> + void *ctx);
> +#endif /* LINUX_VERSION_IS_GEQ(4,7,0) */
> +#endif /* __BP_VERIFICATION_H */
> diff --git a/backport/compat/.gitignore b/backport/compat/.gitignore
> new file mode 100644
> index 000000000000..72ff0e993b1d
> --- /dev/null
> +++ b/backport/compat/.gitignore
> @@ -0,0 +1 @@
> +oid_registry_data.c
> diff --git a/backport/compat/Kconfig b/backport/compat/Kconfig
> index b16667109489..542cf0cca781 100644
> --- a/backport/compat/Kconfig
> +++ b/backport/compat/Kconfig
> @@ -174,3 +174,29 @@ config BPAUTO_REFCOUNT
> depends on KERNEL_4_11
> #h-file linux/refcount.h
> #c-file lib/refcount.c
> +
> +config BPAUTO_SYSTEM_DATA_VERIFICATION
> + bool
> +
> +config BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION
> + bool
> + default y if BPAUTO_SYSTEM_DATA_VERIFICATION
> + depends on KERNEL_4_7 || !SYSTEM_DATA_VERIFICATION
> + select BPAUTO_ASN1_DECODER
> + select BPAUTO_PUBLIC_KEY
> + select BPAUTO_PKCS7
> + #h-file linux/oid_registry.h
> + #c-file lib/oid_registry.c
> +
> +config BPAUTO_PUBLIC_KEY
> + bool
> + #h-file crypto/public_key.h
> +
> +config BPAUTO_ASN1_DECODER
> + bool
> + #h-file linux/asn1_decoder.h
> + #c-file lib/asn1_decoder.c
> +
> +config BPAUTO_PKCS7
> + bool
> + #h-file crypto/pkcs7.h
> diff --git a/backport/compat/Makefile b/backport/compat/Makefile
> index 1658f588c68f..ead22a0099fc 100644
> --- a/backport/compat/Makefile
> +++ b/backport/compat/Makefile
> @@ -39,3 +39,32 @@ compat-$(CPTCFG_KERNEL_4_10) += backport-4.10.o
>
> compat-$(CPTCFG_BPAUTO_BUILD_CRYPTO_CCM) += crypto-ccm.o
> compat-$(CPTCFG_BPAUTO_CRYPTO_SKCIPHER) += crypto-skcipher.o
> +
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/verify.o
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/pkcs7-asn1.o
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/pkcs7_verify.o
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/pkcs7_parser.o
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/x509-asn1.o
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/x509_akid-asn1.o
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/x509_cert_parser.o
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/x509_public_key.o
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/pkcs7_trust.o
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/key.o
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/public_key.o
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/rsa.o
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/bignum.o
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/md.o
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/md_wrap.o
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/sha256.o
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/oid.o
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/asn1parse.o
> +compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/rsapubkey-asn1.o
> +
> +$(obj)/lib-oid_registry.o: $(obj)/oid_registry_data.c
> +
> +$(obj)/oid_registry_data.c: $(src)/../include/linux/backport-oid_registry.h \
> + $(src)/build_OID_registry
> + $(call cmd,build_OID_registry)
> +
> +quiet_cmd_build_OID_registry = GEN $@
> + cmd_build_OID_registry = perl $(src)/build_OID_registry $< $@
> diff --git a/backport/compat/verification/asn1parse.c b/backport/compat/verification/asn1parse.c
> new file mode 100644
> index 000000000000..e81713c7433f
> --- /dev/null
> +++ b/backport/compat/verification/asn1parse.c
> @@ -0,0 +1,393 @@
> +/*
> + * Generic ASN.1 parsing
> + *
> + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
> + * SPDX-License-Identifier: GPL-2.0
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * This file is part of mbed TLS (https://tls.mbed.org)
> + */
> +
> +#if !defined(MBEDTLS_CONFIG_FILE)
> +#include "mbedtls/config.h"
> +#else
> +#include MBEDTLS_CONFIG_FILE
> +#endif
> +
> +#if defined(MBEDTLS_ASN1_PARSE_C)
> +
> +#include "mbedtls/asn1.h"
> +
> +#if defined(MBEDTLS_BIGNUM_C)
> +#include "mbedtls/bignum.h"
> +#endif
> +
> +#if defined(MBEDTLS_PLATFORM_C)
> +#include "mbedtls/platform.h"
> +#else
> +#include <stdlib.h>
> +#define mbedtls_calloc calloc
> +#define mbedtls_free free
> +#endif
> +
> +/* Implementation that should never be optimized out by the compiler */
> +static void mbedtls_zeroize( void *v, size_t n ) {
> + volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
> +}
> +
> +/*
> + * ASN.1 DER decoding routines
> + */
> +int mbedtls_asn1_get_len( unsigned char **p,
> + const unsigned char *end,
> + size_t *len )
> +{
> + if( ( end - *p ) < 1 )
> + return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
> +
> + if( ( **p & 0x80 ) == 0 )
> + *len = *(*p)++;
> + else
> + {
> + switch( **p & 0x7F )
> + {
> + case 1:
> + if( ( end - *p ) < 2 )
> + return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
> +
> + *len = (*p)[1];
> + (*p) += 2;
> + break;
> +
> + case 2:
> + if( ( end - *p ) < 3 )
> + return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
> +
> + *len = ( (size_t)(*p)[1] << 8 ) | (*p)[2];
> + (*p) += 3;
> + break;
> +
> + case 3:
> + if( ( end - *p ) < 4 )
> + return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
> +
> + *len = ( (size_t)(*p)[1] << 16 ) |
> + ( (size_t)(*p)[2] << 8 ) | (*p)[3];
> + (*p) += 4;
> + break;
> +
> + case 4:
> + if( ( end - *p ) < 5 )
> + return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
> +
> + *len = ( (size_t)(*p)[1] << 24 ) | ( (size_t)(*p)[2] << 16 ) |
> + ( (size_t)(*p)[3] << 8 ) | (*p)[4];
> + (*p) += 5;
> + break;
> +
> + default:
> + return( MBEDTLS_ERR_ASN1_INVALID_LENGTH );
> + }
> + }
> +
> + if( *len > (size_t) ( end - *p ) )
> + return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
> +
> + return( 0 );
> +}
> +
> +int mbedtls_asn1_get_tag( unsigned char **p,
> + const unsigned char *end,
> + size_t *len, int tag )
> +{
> + if( ( end - *p ) < 1 )
> + return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
> +
> + if( **p != tag )
> + return( MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
> +
> + (*p)++;
> +
> + return( mbedtls_asn1_get_len( p, end, len ) );
> +}
> +
> +int mbedtls_asn1_get_bool( unsigned char **p,
> + const unsigned char *end,
> + int *val )
> +{
> + int ret;
> + size_t len;
> +
> + if( ( ret = mbedtls_asn1_get_tag( p, end, &len, MBEDTLS_ASN1_BOOLEAN ) ) != 0 )
> + return( ret );
> +
> + if( len != 1 )
> + return( MBEDTLS_ERR_ASN1_INVALID_LENGTH );
> +
> + *val = ( **p != 0 ) ? 1 : 0;
> + (*p)++;
> +
> + return( 0 );
> +}
> +
> +int mbedtls_asn1_get_int( unsigned char **p,
> + const unsigned char *end,
> + int *val )
> +{
> + int ret;
> + size_t len;
> +
> + if( ( ret = mbedtls_asn1_get_tag( p, end, &len, MBEDTLS_ASN1_INTEGER ) ) != 0 )
> + return( ret );
> +
> + if( len == 0 || len > sizeof( int ) || ( **p & 0x80 ) != 0 )
> + return( MBEDTLS_ERR_ASN1_INVALID_LENGTH );
> +
> + *val = 0;
> +
> + while( len-- > 0 )
> + {
> + *val = ( *val << 8 ) | **p;
> + (*p)++;
> + }
> +
> + return( 0 );
> +}
> +
> +#if defined(MBEDTLS_BIGNUM_C)
> +int mbedtls_asn1_get_mpi( unsigned char **p,
> + const unsigned char *end,
> + mbedtls_mpi *X )
> +{
> + int ret;
> + size_t len;
> +
> + if( ( ret = mbedtls_asn1_get_tag( p, end, &len, MBEDTLS_ASN1_INTEGER ) ) != 0 )
> + return( ret );
> +
> + ret = mbedtls_mpi_read_binary( X, *p, len );
> +
> + *p += len;
> +
> + return( ret );
> +}
> +#endif /* MBEDTLS_BIGNUM_C */
> +
> +int mbedtls_asn1_get_bitstring( unsigned char **p, const unsigned char *end,
> + mbedtls_asn1_bitstring *bs)
> +{
> + int ret;
> +
> + /* Certificate type is a single byte bitstring */
> + if( ( ret = mbedtls_asn1_get_tag( p, end, &bs->len, MBEDTLS_ASN1_BIT_STRING ) ) != 0 )
> + return( ret );
> +
> + /* Check length, subtract one for actual bit string length */
> + if( bs->len < 1 )
> + return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
> + bs->len -= 1;
> +
> + /* Get number of unused bits, ensure unused bits <= 7 */
> + bs->unused_bits = **p;
> + if( bs->unused_bits > 7 )
> + return( MBEDTLS_ERR_ASN1_INVALID_LENGTH );
> + (*p)++;
> +
> + /* Get actual bitstring */
> + bs->p = *p;
> + *p += bs->len;
> +
> + if( *p != end )
> + return( MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
> +
> + return( 0 );
> +}
> +
> +/*
> + * Get a bit string without unused bits
> + */
> +int mbedtls_asn1_get_bitstring_null( unsigned char **p, const unsigned char *end,
> + size_t *len )
> +{
> + int ret;
> +
> + if( ( ret = mbedtls_asn1_get_tag( p, end, len, MBEDTLS_ASN1_BIT_STRING ) ) != 0 )
> + return( ret );
> +
> + if( (*len)-- < 2 || *(*p)++ != 0 )
> + return( MBEDTLS_ERR_ASN1_INVALID_DATA );
> +
> + return( 0 );
> +}
> +
> +
> +
> +/*
> + * Parses and splits an ASN.1 "SEQUENCE OF <tag>"
> + */
> +int mbedtls_asn1_get_sequence_of( unsigned char **p,
> + const unsigned char *end,
> + mbedtls_asn1_sequence *cur,
> + int tag)
> +{
> + int ret;
> + size_t len;
> + mbedtls_asn1_buf *buf;
> +
> + /* Get main sequence tag */
> + if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
> + MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
> + return( ret );
> +
> + if( *p + len != end )
> + return( MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
> +
> + while( *p < end )
> + {
> + buf = &(cur->buf);
> + buf->tag = **p;
> +
> + if( ( ret = mbedtls_asn1_get_tag( p, end, &buf->len, tag ) ) != 0 )
> + return( ret );
> +
> + buf->p = *p;
> + *p += buf->len;
> +
> + /* Allocate and assign next pointer */
> + if( *p < end )
> + {
> + cur->next = (mbedtls_asn1_sequence*)mbedtls_calloc( 1,
> + sizeof( mbedtls_asn1_sequence ) );
> +
> + if( cur->next == NULL )
> + return( MBEDTLS_ERR_ASN1_ALLOC_FAILED );
> +
> + cur = cur->next;
> + }
> + }
> +
> + /* Set final sequence entry's next pointer to NULL */
> + cur->next = NULL;
> +
> + if( *p != end )
> + return( MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
> +
> + return( 0 );
> +}
> +
> +int mbedtls_asn1_get_alg( unsigned char **p,
> + const unsigned char *end,
> + mbedtls_asn1_buf *alg, mbedtls_asn1_buf *params )
> +{
> + int ret;
> + size_t len;
> +
> + if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
> + MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
> + return( ret );
> +
> + if( ( end - *p ) < 1 )
> + return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
> +
> + alg->tag = **p;
> + end = *p + len;
> +
> + if( ( ret = mbedtls_asn1_get_tag( p, end, &alg->len, MBEDTLS_ASN1_OID ) ) != 0 )
> + return( ret );
> +
> + alg->p = *p;
> + *p += alg->len;
> +
> + if( *p == end )
> + {
> + mbedtls_zeroize( params, sizeof(mbedtls_asn1_buf) );
> + return( 0 );
> + }
> +
> + params->tag = **p;
> + (*p)++;
> +
> + if( ( ret = mbedtls_asn1_get_len( p, end, ¶ms->len ) ) != 0 )
> + return( ret );
> +
> + params->p = *p;
> + *p += params->len;
> +
> + if( *p != end )
> + return( MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
> +
> + return( 0 );
> +}
> +
> +int mbedtls_asn1_get_alg_null( unsigned char **p,
> + const unsigned char *end,
> + mbedtls_asn1_buf *alg )
> +{
> + int ret;
> + mbedtls_asn1_buf params;
> +
> + memset( ¶ms, 0, sizeof(mbedtls_asn1_buf) );
> +
> + if( ( ret = mbedtls_asn1_get_alg( p, end, alg, ¶ms ) ) != 0 )
> + return( ret );
> +
> + if( ( params.tag != MBEDTLS_ASN1_NULL && params.tag != 0 ) || params.len != 0 )
> + return( MBEDTLS_ERR_ASN1_INVALID_DATA );
> +
> + return( 0 );
> +}
> +
> +void mbedtls_asn1_free_named_data( mbedtls_asn1_named_data *cur )
> +{
> + if( cur == NULL )
> + return;
> +
> + mbedtls_free( cur->oid.p );
> + mbedtls_free( cur->val.p );
> +
> + mbedtls_zeroize( cur, sizeof( mbedtls_asn1_named_data ) );
> +}
> +
> +void mbedtls_asn1_free_named_data_list( mbedtls_asn1_named_data **head )
> +{
> + mbedtls_asn1_named_data *cur;
> +
> + while( ( cur = *head ) != NULL )
> + {
> + *head = cur->next;
> + mbedtls_asn1_free_named_data( cur );
> + mbedtls_free( cur );
> + }
> +}
> +
> +mbedtls_asn1_named_data *mbedtls_asn1_find_named_data( mbedtls_asn1_named_data *list,
> + const char *oid, size_t len )
> +{
> + while( list != NULL )
> + {
> + if( list->oid.len == len &&
> + memcmp( list->oid.p, oid, len ) == 0 )
> + {
> + break;
> + }
> +
> + list = list->next;
> + }
> +
> + return( list );
> +}
> +
> +#endif /* MBEDTLS_ASN1_PARSE_C */
> diff --git a/backport/compat/verification/bignum.c b/backport/compat/verification/bignum.c
> new file mode 100644
> index 000000000000..7edfb0837557
> --- /dev/null
> +++ b/backport/compat/verification/bignum.c
> @@ -0,0 +1,2447 @@
> +/*
> + * Multi-precision integer library
> + *
> + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
> + * SPDX-License-Identifier: GPL-2.0
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * This file is part of mbed TLS (https://tls.mbed.org)
> + */
> +
> +/*
> + * The following sources were referenced in the design of this Multi-precision
> + * Integer library:
> + *
> + * [1] Handbook of Applied Cryptography - 1997
> + * Menezes, van Oorschot and Vanstone
> + *
> + * [2] Multi-Precision Math
> + * Tom St Denis
> + * https://github.com/libtom/libtommath/blob/develop/tommath.pdf
> + *
> + * [3] GNU Multi-Precision Arithmetic Library
> + * https://gmplib.org/manual/index.html
> + *
> + */
> +
> +#if !defined(MBEDTLS_CONFIG_FILE)
> +#include "mbedtls/config.h"
> +#else
> +#include MBEDTLS_CONFIG_FILE
> +#endif
> +
> +#if defined(MBEDTLS_BIGNUM_C)
> +
> +#include "mbedtls/bignum.h"
> +#include "mbedtls/bn_mul.h"
> +
> +#if defined(MBEDTLS_PLATFORM_C)
> +#include "mbedtls/platform.h"
> +#else
> +#include <stdio.h>
> +#include <stdlib.h>
> +#define mbedtls_printf printf
> +#define mbedtls_calloc calloc
> +#define mbedtls_free free
> +#endif
> +
> +/* Implementation that should never be optimized out by the compiler */
> +static void mbedtls_mpi_zeroize( mbedtls_mpi_uint *v, size_t n ) {
> + volatile mbedtls_mpi_uint *p = v; while( n-- ) *p++ = 0;
> +}
> +
> +#define ciL (sizeof(mbedtls_mpi_uint)) /* chars in limb */
> +#define biL (ciL << 3) /* bits in limb */
> +#define biH (ciL << 2) /* half limb size */
> +
> +#define MPI_SIZE_T_MAX ( (size_t) -1 ) /* SIZE_T_MAX is not standard */
> +
> +/*
> + * Convert between bits/chars and number of limbs
> + * Divide first in order to avoid potential overflows
> + */
> +#define BITS_TO_LIMBS(i) ( (i) / biL + ( (i) % biL != 0 ) )
> +#define CHARS_TO_LIMBS(i) ( (i) / ciL + ( (i) % ciL != 0 ) )
> +
> +/*
> + * Initialize one MPI
> + */
> +void mbedtls_mpi_init( mbedtls_mpi *X )
> +{
> + if( X == NULL )
> + return;
> +
> + X->s = 1;
> + X->n = 0;
> + X->p = NULL;
> +}
> +
> +/*
> + * Unallocate one MPI
> + */
> +void mbedtls_mpi_free( mbedtls_mpi *X )
> +{
> + if( X == NULL )
> + return;
> +
> + if( X->p != NULL )
> + {
> + mbedtls_mpi_zeroize( X->p, X->n );
> + mbedtls_free( X->p );
> + }
> +
> + X->s = 1;
> + X->n = 0;
> + X->p = NULL;
> +}
> +
> +/*
> + * Enlarge to the specified number of limbs
> + */
> +int mbedtls_mpi_grow( mbedtls_mpi *X, size_t nblimbs )
> +{
> + mbedtls_mpi_uint *p;
> +
> + if( nblimbs > MBEDTLS_MPI_MAX_LIMBS )
> + return( MBEDTLS_ERR_MPI_ALLOC_FAILED );
> +
> + if( X->n < nblimbs )
> + {
> + if( ( p = (mbedtls_mpi_uint*)mbedtls_calloc( nblimbs, ciL ) ) == NULL )
> + return( MBEDTLS_ERR_MPI_ALLOC_FAILED );
> +
> + if( X->p != NULL )
> + {
> + memcpy( p, X->p, X->n * ciL );
> + mbedtls_mpi_zeroize( X->p, X->n );
> + mbedtls_free( X->p );
> + }
> +
> + X->n = nblimbs;
> + X->p = p;
> + }
> +
> + return( 0 );
> +}
> +
> +/*
> + * Resize down as much as possible,
> + * while keeping at least the specified number of limbs
> + */
> +int mbedtls_mpi_shrink( mbedtls_mpi *X, size_t nblimbs )
> +{
> + mbedtls_mpi_uint *p;
> + size_t i;
> +
> + /* Actually resize up in this case */
> + if( X->n <= nblimbs )
> + return( mbedtls_mpi_grow( X, nblimbs ) );
> +
> + for( i = X->n - 1; i > 0; i-- )
> + if( X->p[i] != 0 )
> + break;
> + i++;
> +
> + if( i < nblimbs )
> + i = nblimbs;
> +
> + if( ( p = (mbedtls_mpi_uint*)mbedtls_calloc( i, ciL ) ) == NULL )
> + return( MBEDTLS_ERR_MPI_ALLOC_FAILED );
> +
> + if( X->p != NULL )
> + {
> + memcpy( p, X->p, i * ciL );
> + mbedtls_mpi_zeroize( X->p, X->n );
> + mbedtls_free( X->p );
> + }
> +
> + X->n = i;
> + X->p = p;
> +
> + return( 0 );
> +}
> +
> +/*
> + * Copy the contents of Y into X
> + */
> +int mbedtls_mpi_copy( mbedtls_mpi *X, const mbedtls_mpi *Y )
> +{
> + int ret;
> + size_t i;
> +
> + if( X == Y )
> + return( 0 );
> +
> + if( Y->p == NULL )
> + {
> + mbedtls_mpi_free( X );
> + return( 0 );
> + }
> +
> + for( i = Y->n - 1; i > 0; i-- )
> + if( Y->p[i] != 0 )
> + break;
> + i++;
> +
> + X->s = Y->s;
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, i ) );
> +
> + memset( X->p, 0, X->n * ciL );
> + memcpy( X->p, Y->p, i * ciL );
> +
> +cleanup:
> +
> + return( ret );
> +}
> +
> +/*
> + * Swap the contents of X and Y
> + */
> +void mbedtls_mpi_swap( mbedtls_mpi *X, mbedtls_mpi *Y )
> +{
> + mbedtls_mpi T;
> +
> + memcpy( &T, X, sizeof( mbedtls_mpi ) );
> + memcpy( X, Y, sizeof( mbedtls_mpi ) );
> + memcpy( Y, &T, sizeof( mbedtls_mpi ) );
> +}
> +
> +/*
> + * Conditionally assign X = Y, without leaking information
> + * about whether the assignment was made or not.
> + * (Leaking information about the respective sizes of X and Y is ok however.)
> + */
> +int mbedtls_mpi_safe_cond_assign( mbedtls_mpi *X, const mbedtls_mpi *Y, unsigned char assign )
> +{
> + int ret = 0;
> + size_t i;
> +
> + /* make sure assign is 0 or 1 in a time-constant manner */
> + assign = (assign | (unsigned char)-assign) >> 7;
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, Y->n ) );
> +
> + X->s = X->s * ( 1 - assign ) + Y->s * assign;
> +
> + for( i = 0; i < Y->n; i++ )
> + X->p[i] = X->p[i] * ( 1 - assign ) + Y->p[i] * assign;
> +
> + for( ; i < X->n; i++ )
> + X->p[i] *= ( 1 - assign );
> +
> +cleanup:
> + return( ret );
> +}
> +
> +/*
> + * Conditionally swap X and Y, without leaking information
> + * about whether the swap was made or not.
> + * Here it is not ok to simply swap the pointers, which whould lead to
> + * different memory access patterns when X and Y are used afterwards.
> + */
> +int mbedtls_mpi_safe_cond_swap( mbedtls_mpi *X, mbedtls_mpi *Y, unsigned char swap )
> +{
> + int ret, s;
> + size_t i;
> + mbedtls_mpi_uint tmp;
> +
> + if( X == Y )
> + return( 0 );
> +
> + /* make sure swap is 0 or 1 in a time-constant manner */
> + swap = (swap | (unsigned char)-swap) >> 7;
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, Y->n ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( Y, X->n ) );
> +
> + s = X->s;
> + X->s = X->s * ( 1 - swap ) + Y->s * swap;
> + Y->s = Y->s * ( 1 - swap ) + s * swap;
> +
> +
> + for( i = 0; i < X->n; i++ )
> + {
> + tmp = X->p[i];
> + X->p[i] = X->p[i] * ( 1 - swap ) + Y->p[i] * swap;
> + Y->p[i] = Y->p[i] * ( 1 - swap ) + tmp * swap;
> + }
> +
> +cleanup:
> + return( ret );
> +}
> +
> +/*
> + * Set value from integer
> + */
> +int mbedtls_mpi_lset( mbedtls_mpi *X, mbedtls_mpi_sint z )
> +{
> + int ret;
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, 1 ) );
> + memset( X->p, 0, X->n * ciL );
> +
> + X->p[0] = ( z < 0 ) ? -z : z;
> + X->s = ( z < 0 ) ? -1 : 1;
> +
> +cleanup:
> +
> + return( ret );
> +}
> +
> +/*
> + * Get a specific bit
> + */
> +int mbedtls_mpi_get_bit( const mbedtls_mpi *X, size_t pos )
> +{
> + if( X->n * biL <= pos )
> + return( 0 );
> +
> + return( ( X->p[pos / biL] >> ( pos % biL ) ) & 0x01 );
> +}
> +
> +/*
> + * Set a bit to a specific value of 0 or 1
> + */
> +int mbedtls_mpi_set_bit( mbedtls_mpi *X, size_t pos, unsigned char val )
> +{
> + int ret = 0;
> + size_t off = pos / biL;
> + size_t idx = pos % biL;
> +
> + if( val != 0 && val != 1 )
> + return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
> +
> + if( X->n * biL <= pos )
> + {
> + if( val == 0 )
> + return( 0 );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, off + 1 ) );
> + }
> +
> + X->p[off] &= ~( (mbedtls_mpi_uint) 0x01 << idx );
> + X->p[off] |= (mbedtls_mpi_uint) val << idx;
> +
> +cleanup:
> +
> + return( ret );
> +}
> +
> +/*
> + * Return the number of less significant zero-bits
> + */
> +size_t mbedtls_mpi_lsb( const mbedtls_mpi *X )
> +{
> + size_t i, j, count = 0;
> +
> + for( i = 0; i < X->n; i++ )
> + for( j = 0; j < biL; j++, count++ )
> + if( ( ( X->p[i] >> j ) & 1 ) != 0 )
> + return( count );
> +
> + return( 0 );
> +}
> +
> +/*
> + * Count leading zero bits in a given integer
> + */
> +static size_t mbedtls_clz( const mbedtls_mpi_uint x )
> +{
> + size_t j;
> + mbedtls_mpi_uint mask = (mbedtls_mpi_uint) 1 << (biL - 1);
> +
> + for( j = 0; j < biL; j++ )
> + {
> + if( x & mask ) break;
> +
> + mask >>= 1;
> + }
> +
> + return j;
> +}
> +
> +/*
> + * Return the number of bits
> + */
> +size_t mbedtls_mpi_bitlen( const mbedtls_mpi *X )
> +{
> + size_t i, j;
> +
> + if( X->n == 0 )
> + return( 0 );
> +
> + for( i = X->n - 1; i > 0; i-- )
> + if( X->p[i] != 0 )
> + break;
> +
> + j = biL - mbedtls_clz( X->p[i] );
> +
> + return( ( i * biL ) + j );
> +}
> +
> +/*
> + * Return the total size in bytes
> + */
> +size_t mbedtls_mpi_size( const mbedtls_mpi *X )
> +{
> + return( ( mbedtls_mpi_bitlen( X ) + 7 ) >> 3 );
> +}
> +
> +/*
> + * Convert an ASCII character to digit value
> + */
> +static int mpi_get_digit( mbedtls_mpi_uint *d, int radix, char c )
> +{
> + *d = 255;
> +
> + if( c >= 0x30 && c <= 0x39 ) *d = c - 0x30;
> + if( c >= 0x41 && c <= 0x46 ) *d = c - 0x37;
> + if( c >= 0x61 && c <= 0x66 ) *d = c - 0x57;
> +
> + if( *d >= (mbedtls_mpi_uint) radix )
> + return( MBEDTLS_ERR_MPI_INVALID_CHARACTER );
> +
> + return( 0 );
> +}
> +
> +/*
> + * Import from an ASCII string
> + */
> +int mbedtls_mpi_read_string( mbedtls_mpi *X, int radix, const char *s )
> +{
> + int ret;
> + size_t i, j, slen, n;
> + mbedtls_mpi_uint d;
> + mbedtls_mpi T;
> +
> + if( radix < 2 || radix > 16 )
> + return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
> +
> + mbedtls_mpi_init( &T );
> +
> + slen = strlen( s );
> +
> + if( radix == 16 )
> + {
> + if( slen > MPI_SIZE_T_MAX >> 2 )
> + return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
> +
> + n = BITS_TO_LIMBS( slen << 2 );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, n ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_lset( X, 0 ) );
> +
> + for( i = slen, j = 0; i > 0; i--, j++ )
> + {
> + if( i == 1 && s[i - 1] == '-' )
> + {
> + X->s = -1;
> + break;
> + }
> +
> + MBEDTLS_MPI_CHK( mpi_get_digit( &d, radix, s[i - 1] ) );
> + X->p[j / ( 2 * ciL )] |= d << ( ( j % ( 2 * ciL ) ) << 2 );
> + }
> + }
> + else
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_lset( X, 0 ) );
> +
> + for( i = 0; i < slen; i++ )
> + {
> + if( i == 0 && s[i] == '-' )
> + {
> + X->s = -1;
> + continue;
> + }
> +
> + MBEDTLS_MPI_CHK( mpi_get_digit( &d, radix, s[i] ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_int( &T, X, radix ) );
> +
> + if( X->s == 1 )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_add_int( X, &T, d ) );
> + }
> + else
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( X, &T, d ) );
> + }
> + }
> + }
> +
> +cleanup:
> +
> + mbedtls_mpi_free( &T );
> +
> + return( ret );
> +}
> +
> +/*
> + * Helper to write the digits high-order first
> + */
> +static int mpi_write_hlp( mbedtls_mpi *X, int radix, char **p )
> +{
> + int ret;
> + mbedtls_mpi_uint r;
> +
> + if( radix < 2 || radix > 16 )
> + return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_int( &r, X, radix ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_div_int( X, NULL, X, radix ) );
> +
> + if( mbedtls_mpi_cmp_int( X, 0 ) != 0 )
> + MBEDTLS_MPI_CHK( mpi_write_hlp( X, radix, p ) );
> +
> + if( r < 10 )
> + *(*p)++ = (char)( r + 0x30 );
> + else
> + *(*p)++ = (char)( r + 0x37 );
> +
> +cleanup:
> +
> + return( ret );
> +}
> +
> +/*
> + * Export into an ASCII string
> + */
> +int mbedtls_mpi_write_string( const mbedtls_mpi *X, int radix,
> + char *buf, size_t buflen, size_t *olen )
> +{
> + int ret = 0;
> + size_t n;
> + char *p;
> + mbedtls_mpi T;
> +
> + if( radix < 2 || radix > 16 )
> + return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
> +
> + n = mbedtls_mpi_bitlen( X );
> + if( radix >= 4 ) n >>= 1;
> + if( radix >= 16 ) n >>= 1;
> + /*
> + * Round up the buffer length to an even value to ensure that there is
> + * enough room for hexadecimal values that can be represented in an odd
> + * number of digits.
> + */
> + n += 3 + ( ( n + 1 ) & 1 );
> +
> + if( buflen < n )
> + {
> + *olen = n;
> + return( MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL );
> + }
> +
> + p = buf;
> + mbedtls_mpi_init( &T );
> +
> + if( X->s == -1 )
> + *p++ = '-';
> +
> + if( radix == 16 )
> + {
> + int c;
> + size_t i, j, k;
> +
> + for( i = X->n, k = 0; i > 0; i-- )
> + {
> + for( j = ciL; j > 0; j-- )
> + {
> + c = ( X->p[i - 1] >> ( ( j - 1 ) << 3) ) & 0xFF;
> +
> + if( c == 0 && k == 0 && ( i + j ) != 2 )
> + continue;
> +
> + *(p++) = "0123456789ABCDEF" [c / 16];
> + *(p++) = "0123456789ABCDEF" [c % 16];
> + k = 1;
> + }
> + }
> + }
> + else
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &T, X ) );
> +
> + if( T.s == -1 )
> + T.s = 1;
> +
> + MBEDTLS_MPI_CHK( mpi_write_hlp( &T, radix, &p ) );
> + }
> +
> + *p++ = '\0';
> + *olen = p - buf;
> +
> +cleanup:
> +
> + mbedtls_mpi_free( &T );
> +
> + return( ret );
> +}
> +
> +#if defined(MBEDTLS_FS_IO)
> +/*
> + * Read X from an opened file
> + */
> +int mbedtls_mpi_read_file( mbedtls_mpi *X, int radix, FILE *fin )
> +{
> + mbedtls_mpi_uint d;
> + size_t slen;
> + char *p;
> + /*
> + * Buffer should have space for (short) label and decimal formatted MPI,
> + * newline characters and '\0'
> + */
> + char s[ MBEDTLS_MPI_RW_BUFFER_SIZE ];
> +
> + memset( s, 0, sizeof( s ) );
> + if( fgets( s, sizeof( s ) - 1, fin ) == NULL )
> + return( MBEDTLS_ERR_MPI_FILE_IO_ERROR );
> +
> + slen = strlen( s );
> + if( slen == sizeof( s ) - 2 )
> + return( MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL );
> +
> + if( slen > 0 && s[slen - 1] == '\n' ) { slen--; s[slen] = '\0'; }
> + if( slen > 0 && s[slen - 1] == '\r' ) { slen--; s[slen] = '\0'; }
> +
> + p = s + slen;
> + while( p-- > s )
> + if( mpi_get_digit( &d, radix, *p ) != 0 )
> + break;
> +
> + return( mbedtls_mpi_read_string( X, radix, p + 1 ) );
> +}
> +
> +/*
> + * Write X into an opened file (or stdout if fout == NULL)
> + */
> +int mbedtls_mpi_write_file( const char *p, const mbedtls_mpi *X, int radix, FILE *fout )
> +{
> + int ret;
> + size_t n, slen, plen;
> + /*
> + * Buffer should have space for (short) label and decimal formatted MPI,
> + * newline characters and '\0'
> + */
> + char s[ MBEDTLS_MPI_RW_BUFFER_SIZE ];
> +
> + memset( s, 0, sizeof( s ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_write_string( X, radix, s, sizeof( s ) - 2, &n ) );
> +
> + if( p == NULL ) p = "";
> +
> + plen = strlen( p );
> + slen = strlen( s );
> + s[slen++] = '\r';
> + s[slen++] = '\n';
> +
> + if( fout != NULL )
> + {
> + if( fwrite( p, 1, plen, fout ) != plen ||
> + fwrite( s, 1, slen, fout ) != slen )
> + return( MBEDTLS_ERR_MPI_FILE_IO_ERROR );
> + }
> + else
> + mbedtls_printf( "%s%s", p, s );
> +
> +cleanup:
> +
> + return( ret );
> +}
> +#endif /* MBEDTLS_FS_IO */
> +
> +/*
> + * Import X from unsigned binary data, big endian
> + */
> +int mbedtls_mpi_read_binary( mbedtls_mpi *X, const unsigned char *buf, size_t buflen )
> +{
> + int ret;
> + size_t i, j, n;
> +
> + for( n = 0; n < buflen; n++ )
> + if( buf[n] != 0 )
> + break;
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, CHARS_TO_LIMBS( buflen - n ) ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_lset( X, 0 ) );
> +
> + for( i = buflen, j = 0; i > n; i--, j++ )
> + X->p[j / ciL] |= ((mbedtls_mpi_uint) buf[i - 1]) << ((j % ciL) << 3);
> +
> +cleanup:
> +
> + return( ret );
> +}
> +
> +/*
> + * Export X into unsigned binary data, big endian
> + */
> +int mbedtls_mpi_write_binary( const mbedtls_mpi *X, unsigned char *buf, size_t buflen )
> +{
> + size_t i, j, n;
> +
> + n = mbedtls_mpi_size( X );
> +
> + if( buflen < n )
> + return( MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL );
> +
> + memset( buf, 0, buflen );
> +
> + for( i = buflen - 1, j = 0; n > 0; i--, j++, n-- )
> + buf[i] = (unsigned char)( X->p[j / ciL] >> ((j % ciL) << 3) );
> +
> + return( 0 );
> +}
> +
> +/*
> + * Left-shift: X <<= count
> + */
> +int mbedtls_mpi_shift_l( mbedtls_mpi *X, size_t count )
> +{
> + int ret;
> + size_t i, v0, t1;
> + mbedtls_mpi_uint r0 = 0, r1;
> +
> + v0 = count / (biL );
> + t1 = count & (biL - 1);
> +
> + i = mbedtls_mpi_bitlen( X ) + count;
> +
> + if( X->n * biL < i )
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, BITS_TO_LIMBS( i ) ) );
> +
> + ret = 0;
> +
> + /*
> + * shift by count / limb_size
> + */
> + if( v0 > 0 )
> + {
> + for( i = X->n; i > v0; i-- )
> + X->p[i - 1] = X->p[i - v0 - 1];
> +
> + for( ; i > 0; i-- )
> + X->p[i - 1] = 0;
> + }
> +
> + /*
> + * shift by count % limb_size
> + */
> + if( t1 > 0 )
> + {
> + for( i = v0; i < X->n; i++ )
> + {
> + r1 = X->p[i] >> (biL - t1);
> + X->p[i] <<= t1;
> + X->p[i] |= r0;
> + r0 = r1;
> + }
> + }
> +
> +cleanup:
> +
> + return( ret );
> +}
> +
> +/*
> + * Right-shift: X >>= count
> + */
> +int mbedtls_mpi_shift_r( mbedtls_mpi *X, size_t count )
> +{
> + size_t i, v0, v1;
> + mbedtls_mpi_uint r0 = 0, r1;
> +
> + v0 = count / biL;
> + v1 = count & (biL - 1);
> +
> + if( v0 > X->n || ( v0 == X->n && v1 > 0 ) )
> + return mbedtls_mpi_lset( X, 0 );
> +
> + /*
> + * shift by count / limb_size
> + */
> + if( v0 > 0 )
> + {
> + for( i = 0; i < X->n - v0; i++ )
> + X->p[i] = X->p[i + v0];
> +
> + for( ; i < X->n; i++ )
> + X->p[i] = 0;
> + }
> +
> + /*
> + * shift by count % limb_size
> + */
> + if( v1 > 0 )
> + {
> + for( i = X->n; i > 0; i-- )
> + {
> + r1 = X->p[i - 1] << (biL - v1);
> + X->p[i - 1] >>= v1;
> + X->p[i - 1] |= r0;
> + r0 = r1;
> + }
> + }
> +
> + return( 0 );
> +}
> +
> +/*
> + * Compare unsigned values
> + */
> +int mbedtls_mpi_cmp_abs( const mbedtls_mpi *X, const mbedtls_mpi *Y )
> +{
> + size_t i, j;
> +
> + for( i = X->n; i > 0; i-- )
> + if( X->p[i - 1] != 0 )
> + break;
> +
> + for( j = Y->n; j > 0; j-- )
> + if( Y->p[j - 1] != 0 )
> + break;
> +
> + if( i == 0 && j == 0 )
> + return( 0 );
> +
> + if( i > j ) return( 1 );
> + if( j > i ) return( -1 );
> +
> + for( ; i > 0; i-- )
> + {
> + if( X->p[i - 1] > Y->p[i - 1] ) return( 1 );
> + if( X->p[i - 1] < Y->p[i - 1] ) return( -1 );
> + }
> +
> + return( 0 );
> +}
> +
> +/*
> + * Compare signed values
> + */
> +int mbedtls_mpi_cmp_mpi( const mbedtls_mpi *X, const mbedtls_mpi *Y )
> +{
> + size_t i, j;
> +
> + for( i = X->n; i > 0; i-- )
> + if( X->p[i - 1] != 0 )
> + break;
> +
> + for( j = Y->n; j > 0; j-- )
> + if( Y->p[j - 1] != 0 )
> + break;
> +
> + if( i == 0 && j == 0 )
> + return( 0 );
> +
> + if( i > j ) return( X->s );
> + if( j > i ) return( -Y->s );
> +
> + if( X->s > 0 && Y->s < 0 ) return( 1 );
> + if( Y->s > 0 && X->s < 0 ) return( -1 );
> +
> + for( ; i > 0; i-- )
> + {
> + if( X->p[i - 1] > Y->p[i - 1] ) return( X->s );
> + if( X->p[i - 1] < Y->p[i - 1] ) return( -X->s );
> + }
> +
> + return( 0 );
> +}
> +
> +/*
> + * Compare signed values
> + */
> +int mbedtls_mpi_cmp_int( const mbedtls_mpi *X, mbedtls_mpi_sint z )
> +{
> + mbedtls_mpi Y;
> + mbedtls_mpi_uint p[1];
> +
> + *p = ( z < 0 ) ? -z : z;
> + Y.s = ( z < 0 ) ? -1 : 1;
> + Y.n = 1;
> + Y.p = p;
> +
> + return( mbedtls_mpi_cmp_mpi( X, &Y ) );
> +}
> +
> +/*
> + * Unsigned addition: X = |A| + |B| (HAC 14.7)
> + */
> +int mbedtls_mpi_add_abs( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B )
> +{
> + int ret;
> + size_t i, j;
> + mbedtls_mpi_uint *o, *p, c, tmp;
> +
> + if( X == B )
> + {
> + const mbedtls_mpi *T = A; A = X; B = T;
> + }
> +
> + if( X != A )
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( X, A ) );
> +
> + /*
> + * X should always be positive as a result of unsigned additions.
> + */
> + X->s = 1;
> +
> + for( j = B->n; j > 0; j-- )
> + if( B->p[j - 1] != 0 )
> + break;
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, j ) );
> +
> + o = B->p; p = X->p; c = 0;
> +
> + /*
> + * tmp is used because it might happen that p == o
> + */
> + for( i = 0; i < j; i++, o++, p++ )
> + {
> + tmp= *o;
> + *p += c; c = ( *p < c );
> + *p += tmp; c += ( *p < tmp );
> + }
> +
> + while( c != 0 )
> + {
> + if( i >= X->n )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, i + 1 ) );
> + p = X->p + i;
> + }
> +
> + *p += c; c = ( *p < c ); i++; p++;
> + }
> +
> +cleanup:
> +
> + return( ret );
> +}
> +
> +/*
> + * Helper for mbedtls_mpi subtraction
> + */
> +static void mpi_sub_hlp( size_t n, mbedtls_mpi_uint *s, mbedtls_mpi_uint *d )
> +{
> + size_t i;
> + mbedtls_mpi_uint c, z;
> +
> + for( i = c = 0; i < n; i++, s++, d++ )
> + {
> + z = ( *d < c ); *d -= c;
> + c = ( *d < *s ) + z; *d -= *s;
> + }
> +
> + while( c != 0 )
> + {
> + z = ( *d < c ); *d -= c;
> + c = z; i++; d++;
> + }
> +}
> +
> +/*
> + * Unsigned subtraction: X = |A| - |B| (HAC 14.9)
> + */
> +int mbedtls_mpi_sub_abs( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B )
> +{
> + mbedtls_mpi TB;
> + int ret;
> + size_t n;
> +
> + if( mbedtls_mpi_cmp_abs( A, B ) < 0 )
> + return( MBEDTLS_ERR_MPI_NEGATIVE_VALUE );
> +
> + mbedtls_mpi_init( &TB );
> +
> + if( X == B )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &TB, B ) );
> + B = &TB;
> + }
> +
> + if( X != A )
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( X, A ) );
> +
> + /*
> + * X should always be positive as a result of unsigned subtractions.
> + */
> + X->s = 1;
> +
> + ret = 0;
> +
> + for( n = B->n; n > 0; n-- )
> + if( B->p[n - 1] != 0 )
> + break;
> +
> + mpi_sub_hlp( n, B->p, X->p );
> +
> +cleanup:
> +
> + mbedtls_mpi_free( &TB );
> +
> + return( ret );
> +}
> +
> +/*
> + * Signed addition: X = A + B
> + */
> +int mbedtls_mpi_add_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B )
> +{
> + int ret, s = A->s;
> +
> + if( A->s * B->s < 0 )
> + {
> + if( mbedtls_mpi_cmp_abs( A, B ) >= 0 )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_abs( X, A, B ) );
> + X->s = s;
> + }
> + else
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_abs( X, B, A ) );
> + X->s = -s;
> + }
> + }
> + else
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_add_abs( X, A, B ) );
> + X->s = s;
> + }
> +
> +cleanup:
> +
> + return( ret );
> +}
> +
> +/*
> + * Signed subtraction: X = A - B
> + */
> +int mbedtls_mpi_sub_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B )
> +{
> + int ret, s = A->s;
> +
> + if( A->s * B->s > 0 )
> + {
> + if( mbedtls_mpi_cmp_abs( A, B ) >= 0 )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_abs( X, A, B ) );
> + X->s = s;
> + }
> + else
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_abs( X, B, A ) );
> + X->s = -s;
> + }
> + }
> + else
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_add_abs( X, A, B ) );
> + X->s = s;
> + }
> +
> +cleanup:
> +
> + return( ret );
> +}
> +
> +/*
> + * Signed addition: X = A + b
> + */
> +int mbedtls_mpi_add_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_sint b )
> +{
> + mbedtls_mpi _B;
> + mbedtls_mpi_uint p[1];
> +
> + p[0] = ( b < 0 ) ? -b : b;
> + _B.s = ( b < 0 ) ? -1 : 1;
> + _B.n = 1;
> + _B.p = p;
> +
> + return( mbedtls_mpi_add_mpi( X, A, &_B ) );
> +}
> +
> +/*
> + * Signed subtraction: X = A - b
> + */
> +int mbedtls_mpi_sub_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_sint b )
> +{
> + mbedtls_mpi _B;
> + mbedtls_mpi_uint p[1];
> +
> + p[0] = ( b < 0 ) ? -b : b;
> + _B.s = ( b < 0 ) ? -1 : 1;
> + _B.n = 1;
> + _B.p = p;
> +
> + return( mbedtls_mpi_sub_mpi( X, A, &_B ) );
> +}
> +
> +/*
> + * Helper for mbedtls_mpi multiplication
> + */
> +static
> +#if defined(__APPLE__) && defined(__arm__)
> +/*
> + * Apple LLVM version 4.2 (clang-425.0.24) (based on LLVM 3.2svn)
> + * appears to need this to prevent bad ARM code generation at -O3.
> + */
> +__attribute__ ((noinline))
> +#endif
> +void mpi_mul_hlp( size_t i, mbedtls_mpi_uint *s, mbedtls_mpi_uint *d, mbedtls_mpi_uint b )
> +{
> + mbedtls_mpi_uint c = 0, t = 0;
> +
> +#if defined(MULADDC_HUIT)
> + for( ; i >= 8; i -= 8 )
> + {
> + MULADDC_INIT
> + MULADDC_HUIT
> + MULADDC_STOP
> + }
> +
> + for( ; i > 0; i-- )
> + {
> + MULADDC_INIT
> + MULADDC_CORE
> + MULADDC_STOP
> + }
> +#else /* MULADDC_HUIT */
> + for( ; i >= 16; i -= 16 )
> + {
> + MULADDC_INIT
> + MULADDC_CORE MULADDC_CORE
> + MULADDC_CORE MULADDC_CORE
> + MULADDC_CORE MULADDC_CORE
> + MULADDC_CORE MULADDC_CORE
> +
> + MULADDC_CORE MULADDC_CORE
> + MULADDC_CORE MULADDC_CORE
> + MULADDC_CORE MULADDC_CORE
> + MULADDC_CORE MULADDC_CORE
> + MULADDC_STOP
> + }
> +
> + for( ; i >= 8; i -= 8 )
> + {
> + MULADDC_INIT
> + MULADDC_CORE MULADDC_CORE
> + MULADDC_CORE MULADDC_CORE
> +
> + MULADDC_CORE MULADDC_CORE
> + MULADDC_CORE MULADDC_CORE
> + MULADDC_STOP
> + }
> +
> + for( ; i > 0; i-- )
> + {
> + MULADDC_INIT
> + MULADDC_CORE
> + MULADDC_STOP
> + }
> +#endif /* MULADDC_HUIT */
> +
> + t++;
> +
> + do {
> + *d += c; c = ( *d < c ); d++;
> + }
> + while( c != 0 );
> +}
> +
> +/*
> + * Baseline multiplication: X = A * B (HAC 14.12)
> + */
> +int mbedtls_mpi_mul_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B )
> +{
> + int ret;
> + size_t i, j;
> + mbedtls_mpi TA, TB;
> +
> + mbedtls_mpi_init( &TA ); mbedtls_mpi_init( &TB );
> +
> + if( X == A ) { MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &TA, A ) ); A = &TA; }
> + if( X == B ) { MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &TB, B ) ); B = &TB; }
> +
> + for( i = A->n; i > 0; i-- )
> + if( A->p[i - 1] != 0 )
> + break;
> +
> + for( j = B->n; j > 0; j-- )
> + if( B->p[j - 1] != 0 )
> + break;
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, i + j ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_lset( X, 0 ) );
> +
> + for( i++; j > 0; j-- )
> + mpi_mul_hlp( i - 1, A->p, X->p + j - 1, B->p[j - 1] );
> +
> + X->s = A->s * B->s;
> +
> +cleanup:
> +
> + mbedtls_mpi_free( &TB ); mbedtls_mpi_free( &TA );
> +
> + return( ret );
> +}
> +
> +/*
> + * Baseline multiplication: X = A * b
> + */
> +int mbedtls_mpi_mul_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_uint b )
> +{
> + mbedtls_mpi _B;
> + mbedtls_mpi_uint p[1];
> +
> + _B.s = 1;
> + _B.n = 1;
> + _B.p = p;
> + p[0] = b;
> +
> + return( mbedtls_mpi_mul_mpi( X, A, &_B ) );
> +}
> +
> +/*
> + * Unsigned integer divide - double mbedtls_mpi_uint dividend, u1/u0, and
> + * mbedtls_mpi_uint divisor, d
> + */
> +static mbedtls_mpi_uint mbedtls_int_div_int( mbedtls_mpi_uint u1,
> + mbedtls_mpi_uint u0, mbedtls_mpi_uint d, mbedtls_mpi_uint *r )
> +{
> +#if defined(MBEDTLS_HAVE_UDBL)
> + mbedtls_t_udbl dividend, quotient;
> +#else
> + const mbedtls_mpi_uint radix = (mbedtls_mpi_uint) 1 << biH;
> + const mbedtls_mpi_uint uint_halfword_mask = ( (mbedtls_mpi_uint) 1 << biH ) - 1;
> + mbedtls_mpi_uint d0, d1, q0, q1, rAX, r0, quotient;
> + mbedtls_mpi_uint u0_msw, u0_lsw;
> + size_t s;
> +#endif
> +
> + /*
> + * Check for overflow
> + */
> + if( 0 == d || u1 >= d )
> + {
> + if (r != NULL) *r = ~0;
> +
> + return ( ~0 );
> + }
> +
> +#if defined(MBEDTLS_HAVE_UDBL)
> + dividend = (mbedtls_t_udbl) u1 << biL;
> + dividend |= (mbedtls_t_udbl) u0;
> + quotient = dividend / d;
> + if( quotient > ( (mbedtls_t_udbl) 1 << biL ) - 1 )
> + quotient = ( (mbedtls_t_udbl) 1 << biL ) - 1;
> +
> + if( r != NULL )
> + *r = (mbedtls_mpi_uint)( dividend - (quotient * d ) );
> +
> + return (mbedtls_mpi_uint) quotient;
> +#else
> +
> + /*
> + * Algorithm D, Section 4.3.1 - The Art of Computer Programming
> + * Vol. 2 - Seminumerical Algorithms, Knuth
> + */
> +
> + /*
> + * Normalize the divisor, d, and dividend, u0, u1
> + */
> + s = mbedtls_clz( d );
> + d = d << s;
> +
> + u1 = u1 << s;
> + u1 |= ( u0 >> ( biL - s ) ) & ( -(mbedtls_mpi_sint)s >> ( biL - 1 ) );
> + u0 = u0 << s;
> +
> + d1 = d >> biH;
> + d0 = d & uint_halfword_mask;
> +
> + u0_msw = u0 >> biH;
> + u0_lsw = u0 & uint_halfword_mask;
> +
> + /*
> + * Find the first quotient and remainder
> + */
> + q1 = u1 / d1;
> + r0 = u1 - d1 * q1;
> +
> + while( q1 >= radix || ( q1 * d0 > radix * r0 + u0_msw ) )
> + {
> + q1 -= 1;
> + r0 += d1;
> +
> + if ( r0 >= radix ) break;
> + }
> +
> + rAX = ( u1 * radix ) + ( u0_msw - q1 * d );
> + q0 = rAX / d1;
> + r0 = rAX - q0 * d1;
> +
> + while( q0 >= radix || ( q0 * d0 > radix * r0 + u0_lsw ) )
> + {
> + q0 -= 1;
> + r0 += d1;
> +
> + if ( r0 >= radix ) break;
> + }
> +
> + if (r != NULL)
> + *r = ( rAX * radix + u0_lsw - q0 * d ) >> s;
> +
> + quotient = q1 * radix + q0;
> +
> + return quotient;
> +#endif
> +}
> +
> +/*
> + * Division by mbedtls_mpi: A = Q * B + R (HAC 14.20)
> + */
> +int mbedtls_mpi_div_mpi( mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A, const mbedtls_mpi *B )
> +{
> + int ret;
> + size_t i, n, t, k;
> + mbedtls_mpi X, Y, Z, T1, T2;
> +
> + if( mbedtls_mpi_cmp_int( B, 0 ) == 0 )
> + return( MBEDTLS_ERR_MPI_DIVISION_BY_ZERO );
> +
> + mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y ); mbedtls_mpi_init( &Z );
> + mbedtls_mpi_init( &T1 ); mbedtls_mpi_init( &T2 );
> +
> + if( mbedtls_mpi_cmp_abs( A, B ) < 0 )
> + {
> + if( Q != NULL ) MBEDTLS_MPI_CHK( mbedtls_mpi_lset( Q, 0 ) );
> + if( R != NULL ) MBEDTLS_MPI_CHK( mbedtls_mpi_copy( R, A ) );
> + return( 0 );
> + }
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &X, A ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &Y, B ) );
> + X.s = Y.s = 1;
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( &Z, A->n + 2 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &Z, 0 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( &T1, 2 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( &T2, 3 ) );
> +
> + k = mbedtls_mpi_bitlen( &Y ) % biL;
> + if( k < biL - 1 )
> + {
> + k = biL - 1 - k;
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_l( &X, k ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_l( &Y, k ) );
> + }
> + else k = 0;
> +
> + n = X.n - 1;
> + t = Y.n - 1;
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_l( &Y, biL * ( n - t ) ) );
> +
> + while( mbedtls_mpi_cmp_mpi( &X, &Y ) >= 0 )
> + {
> + Z.p[n - t]++;
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &X, &X, &Y ) );
> + }
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &Y, biL * ( n - t ) ) );
> +
> + for( i = n; i > t ; i-- )
> + {
> + if( X.p[i] >= Y.p[t] )
> + Z.p[i - t - 1] = ~0;
> + else
> + {
> + Z.p[i - t - 1] = mbedtls_int_div_int( X.p[i], X.p[i - 1],
> + Y.p[t], NULL);
> + }
> +
> + Z.p[i - t - 1]++;
> + do
> + {
> + Z.p[i - t - 1]--;
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &T1, 0 ) );
> + T1.p[0] = ( t < 1 ) ? 0 : Y.p[t - 1];
> + T1.p[1] = Y.p[t];
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_int( &T1, &T1, Z.p[i - t - 1] ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &T2, 0 ) );
> + T2.p[0] = ( i < 2 ) ? 0 : X.p[i - 2];
> + T2.p[1] = ( i < 1 ) ? 0 : X.p[i - 1];
> + T2.p[2] = X.p[i];
> + }
> + while( mbedtls_mpi_cmp_mpi( &T1, &T2 ) > 0 );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_int( &T1, &Y, Z.p[i - t - 1] ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_l( &T1, biL * ( i - t - 1 ) ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &X, &X, &T1 ) );
> +
> + if( mbedtls_mpi_cmp_int( &X, 0 ) < 0 )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &T1, &Y ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_l( &T1, biL * ( i - t - 1 ) ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &X, &X, &T1 ) );
> + Z.p[i - t - 1]--;
> + }
> + }
> +
> + if( Q != NULL )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( Q, &Z ) );
> + Q->s = A->s * B->s;
> + }
> +
> + if( R != NULL )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &X, k ) );
> + X.s = A->s;
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( R, &X ) );
> +
> + if( mbedtls_mpi_cmp_int( R, 0 ) == 0 )
> + R->s = 1;
> + }
> +
> +cleanup:
> +
> + mbedtls_mpi_free( &X ); mbedtls_mpi_free( &Y ); mbedtls_mpi_free( &Z );
> + mbedtls_mpi_free( &T1 ); mbedtls_mpi_free( &T2 );
> +
> + return( ret );
> +}
> +
> +/*
> + * Division by int: A = Q * b + R
> + */
> +int mbedtls_mpi_div_int( mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A, mbedtls_mpi_sint b )
> +{
> + mbedtls_mpi _B;
> + mbedtls_mpi_uint p[1];
> +
> + p[0] = ( b < 0 ) ? -b : b;
> + _B.s = ( b < 0 ) ? -1 : 1;
> + _B.n = 1;
> + _B.p = p;
> +
> + return( mbedtls_mpi_div_mpi( Q, R, A, &_B ) );
> +}
> +
> +/*
> + * Modulo: R = A mod B
> + */
> +int mbedtls_mpi_mod_mpi( mbedtls_mpi *R, const mbedtls_mpi *A, const mbedtls_mpi *B )
> +{
> + int ret;
> +
> + if( mbedtls_mpi_cmp_int( B, 0 ) < 0 )
> + return( MBEDTLS_ERR_MPI_NEGATIVE_VALUE );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_div_mpi( NULL, R, A, B ) );
> +
> + while( mbedtls_mpi_cmp_int( R, 0 ) < 0 )
> + MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( R, R, B ) );
> +
> + while( mbedtls_mpi_cmp_mpi( R, B ) >= 0 )
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( R, R, B ) );
> +
> +cleanup:
> +
> + return( ret );
> +}
> +
> +/*
> + * Modulo: r = A mod b
> + */
> +int mbedtls_mpi_mod_int( mbedtls_mpi_uint *r, const mbedtls_mpi *A, mbedtls_mpi_sint b )
> +{
> + size_t i;
> + mbedtls_mpi_uint x, y, z;
> +
> + if( b == 0 )
> + return( MBEDTLS_ERR_MPI_DIVISION_BY_ZERO );
> +
> + if( b < 0 )
> + return( MBEDTLS_ERR_MPI_NEGATIVE_VALUE );
> +
> + /*
> + * handle trivial cases
> + */
> + if( b == 1 )
> + {
> + *r = 0;
> + return( 0 );
> + }
> +
> + if( b == 2 )
> + {
> + *r = A->p[0] & 1;
> + return( 0 );
> + }
> +
> + /*
> + * general case
> + */
> + for( i = A->n, y = 0; i > 0; i-- )
> + {
> + x = A->p[i - 1];
> + y = ( y << biH ) | ( x >> biH );
> + z = y / b;
> + y -= z * b;
> +
> + x <<= biH;
> + y = ( y << biH ) | ( x >> biH );
> + z = y / b;
> + y -= z * b;
> + }
> +
> + /*
> + * If A is negative, then the current y represents a negative value.
> + * Flipping it to the positive side.
> + */
> + if( A->s < 0 && y != 0 )
> + y = b - y;
> +
> + *r = y;
> +
> + return( 0 );
> +}
> +
> +/*
> + * Fast Montgomery initialization (thanks to Tom St Denis)
> + */
> +static void mpi_montg_init( mbedtls_mpi_uint *mm, const mbedtls_mpi *N )
> +{
> + mbedtls_mpi_uint x, m0 = N->p[0];
> + unsigned int i;
> +
> + x = m0;
> + x += ( ( m0 + 2 ) & 4 ) << 1;
> +
> + for( i = biL; i >= 8; i /= 2 )
> + x *= ( 2 - ( m0 * x ) );
> +
> + *mm = ~x + 1;
> +}
> +
> +/*
> + * Montgomery multiplication: A = A * B * R^-1 mod N (HAC 14.36)
> + */
> +static int mpi_montmul( mbedtls_mpi *A, const mbedtls_mpi *B, const mbedtls_mpi *N, mbedtls_mpi_uint mm,
> + const mbedtls_mpi *T )
> +{
> + size_t i, n, m;
> + mbedtls_mpi_uint u0, u1, *d;
> +
> + if( T->n < N->n + 1 || T->p == NULL )
> + return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
> +
> + memset( T->p, 0, T->n * ciL );
> +
> + d = T->p;
> + n = N->n;
> + m = ( B->n < n ) ? B->n : n;
> +
> + for( i = 0; i < n; i++ )
> + {
> + /*
> + * T = (T + u0*B + u1*N) / 2^biL
> + */
> + u0 = A->p[i];
> + u1 = ( d[0] + u0 * B->p[0] ) * mm;
> +
> + mpi_mul_hlp( m, B->p, d, u0 );
> + mpi_mul_hlp( n, N->p, d, u1 );
> +
> + *d++ = u0; d[n + 1] = 0;
> + }
> +
> + memcpy( A->p, d, ( n + 1 ) * ciL );
> +
> + if( mbedtls_mpi_cmp_abs( A, N ) >= 0 )
> + mpi_sub_hlp( n, N->p, A->p );
> + else
> + /* prevent timing attacks */
> + mpi_sub_hlp( n, A->p, T->p );
> +
> + return( 0 );
> +}
> +
> +/*
> + * Montgomery reduction: A = A * R^-1 mod N
> + */
> +static int mpi_montred( mbedtls_mpi *A, const mbedtls_mpi *N, mbedtls_mpi_uint mm, const mbedtls_mpi *T )
> +{
> + mbedtls_mpi_uint z = 1;
> + mbedtls_mpi U;
> +
> + U.n = U.s = (int) z;
> + U.p = &z;
> +
> + return( mpi_montmul( A, &U, N, mm, T ) );
> +}
> +
> +/*
> + * Sliding-window exponentiation: X = A^E mod N (HAC 14.85)
> + */
> +int mbedtls_mpi_exp_mod( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *E, const mbedtls_mpi *N, mbedtls_mpi *_RR )
> +{
> + int ret;
> + size_t wbits, wsize, one = 1;
> + size_t i, j, nblimbs;
> + size_t bufsize, nbits;
> + mbedtls_mpi_uint ei, mm, state;
> + mbedtls_mpi RR, T, W[ 2 << MBEDTLS_MPI_WINDOW_SIZE ], Apos;
> + int neg;
> +
> + if( mbedtls_mpi_cmp_int( N, 0 ) < 0 || ( N->p[0] & 1 ) == 0 )
> + return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
> +
> + if( mbedtls_mpi_cmp_int( E, 0 ) < 0 )
> + return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
> +
> + /*
> + * Init temps and window size
> + */
> + mpi_montg_init( &mm, N );
> + mbedtls_mpi_init( &RR ); mbedtls_mpi_init( &T );
> + mbedtls_mpi_init( &Apos );
> + memset( W, 0, sizeof( W ) );
> +
> + i = mbedtls_mpi_bitlen( E );
> +
> + wsize = ( i > 671 ) ? 6 : ( i > 239 ) ? 5 :
> + ( i > 79 ) ? 4 : ( i > 23 ) ? 3 : 1;
> +
> + if( wsize > MBEDTLS_MPI_WINDOW_SIZE )
> + wsize = MBEDTLS_MPI_WINDOW_SIZE;
> +
> + j = N->n + 1;
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, j ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( &W[1], j ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( &T, j * 2 ) );
> +
> + /*
> + * Compensate for negative A (and correct at the end)
> + */
> + neg = ( A->s == -1 );
> + if( neg )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &Apos, A ) );
> + Apos.s = 1;
> + A = &Apos;
> + }
> +
> + /*
> + * If 1st call, pre-compute R^2 mod N
> + */
> + if( _RR == NULL || _RR->p == NULL )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &RR, 1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_l( &RR, N->n * 2 * biL ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &RR, &RR, N ) );
> +
> + if( _RR != NULL )
> + memcpy( _RR, &RR, sizeof( mbedtls_mpi ) );
> + }
> + else
> + memcpy( &RR, _RR, sizeof( mbedtls_mpi ) );
> +
> + /*
> + * W[1] = A * R^2 * R^-1 mod N = A * R mod N
> + */
> + if( mbedtls_mpi_cmp_mpi( A, N ) >= 0 )
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &W[1], A, N ) );
> + else
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &W[1], A ) );
> +
> + MBEDTLS_MPI_CHK( mpi_montmul( &W[1], &RR, N, mm, &T ) );
> +
> + /*
> + * X = R^2 * R^-1 mod N = R mod N
> + */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( X, &RR ) );
> + MBEDTLS_MPI_CHK( mpi_montred( X, N, mm, &T ) );
> +
> + if( wsize > 1 )
> + {
> + /*
> + * W[1 << (wsize - 1)] = W[1] ^ (wsize - 1)
> + */
> + j = one << ( wsize - 1 );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( &W[j], N->n + 1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &W[j], &W[1] ) );
> +
> + for( i = 0; i < wsize - 1; i++ )
> + MBEDTLS_MPI_CHK( mpi_montmul( &W[j], &W[j], N, mm, &T ) );
> +
> + /*
> + * W[i] = W[i - 1] * W[1]
> + */
> + for( i = j + 1; i < ( one << wsize ); i++ )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_grow( &W[i], N->n + 1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &W[i], &W[i - 1] ) );
> +
> + MBEDTLS_MPI_CHK( mpi_montmul( &W[i], &W[1], N, mm, &T ) );
> + }
> + }
> +
> + nblimbs = E->n;
> + bufsize = 0;
> + nbits = 0;
> + wbits = 0;
> + state = 0;
> +
> + while( 1 )
> + {
> + if( bufsize == 0 )
> + {
> + if( nblimbs == 0 )
> + break;
> +
> + nblimbs--;
> +
> + bufsize = sizeof( mbedtls_mpi_uint ) << 3;
> + }
> +
> + bufsize--;
> +
> + ei = (E->p[nblimbs] >> bufsize) & 1;
> +
> + /*
> + * skip leading 0s
> + */
> + if( ei == 0 && state == 0 )
> + continue;
> +
> + if( ei == 0 && state == 1 )
> + {
> + /*
> + * out of window, square X
> + */
> + MBEDTLS_MPI_CHK( mpi_montmul( X, X, N, mm, &T ) );
> + continue;
> + }
> +
> + /*
> + * add ei to current window
> + */
> + state = 2;
> +
> + nbits++;
> + wbits |= ( ei << ( wsize - nbits ) );
> +
> + if( nbits == wsize )
> + {
> + /*
> + * X = X^wsize R^-1 mod N
> + */
> + for( i = 0; i < wsize; i++ )
> + MBEDTLS_MPI_CHK( mpi_montmul( X, X, N, mm, &T ) );
> +
> + /*
> + * X = X * W[wbits] R^-1 mod N
> + */
> + MBEDTLS_MPI_CHK( mpi_montmul( X, &W[wbits], N, mm, &T ) );
> +
> + state--;
> + nbits = 0;
> + wbits = 0;
> + }
> + }
> +
> + /*
> + * process the remaining bits
> + */
> + for( i = 0; i < nbits; i++ )
> + {
> + MBEDTLS_MPI_CHK( mpi_montmul( X, X, N, mm, &T ) );
> +
> + wbits <<= 1;
> +
> + if( ( wbits & ( one << wsize ) ) != 0 )
> + MBEDTLS_MPI_CHK( mpi_montmul( X, &W[1], N, mm, &T ) );
> + }
> +
> + /*
> + * X = A^E * R * R^-1 mod N = A^E mod N
> + */
> + MBEDTLS_MPI_CHK( mpi_montred( X, N, mm, &T ) );
> +
> + if( neg && E->n != 0 && ( E->p[0] & 1 ) != 0 )
> + {
> + X->s = -1;
> + MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( X, N, X ) );
> + }
> +
> +cleanup:
> +
> + for( i = ( one << ( wsize - 1 ) ); i < ( one << wsize ); i++ )
> + mbedtls_mpi_free( &W[i] );
> +
> + mbedtls_mpi_free( &W[1] ); mbedtls_mpi_free( &T ); mbedtls_mpi_free( &Apos );
> +
> + if( _RR == NULL || _RR->p == NULL )
> + mbedtls_mpi_free( &RR );
> +
> + return( ret );
> +}
> +
> +/*
> + * Greatest common divisor: G = gcd(A, B) (HAC 14.54)
> + */
> +int mbedtls_mpi_gcd( mbedtls_mpi *G, const mbedtls_mpi *A, const mbedtls_mpi *B )
> +{
> + int ret;
> + size_t lz, lzt;
> + mbedtls_mpi TG, TA, TB;
> +
> + mbedtls_mpi_init( &TG ); mbedtls_mpi_init( &TA ); mbedtls_mpi_init( &TB );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &TA, A ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &TB, B ) );
> +
> + lz = mbedtls_mpi_lsb( &TA );
> + lzt = mbedtls_mpi_lsb( &TB );
> +
> + if( lzt < lz )
> + lz = lzt;
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &TA, lz ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &TB, lz ) );
> +
> + TA.s = TB.s = 1;
> +
> + while( mbedtls_mpi_cmp_int( &TA, 0 ) != 0 )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &TA, mbedtls_mpi_lsb( &TA ) ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &TB, mbedtls_mpi_lsb( &TB ) ) );
> +
> + if( mbedtls_mpi_cmp_mpi( &TA, &TB ) >= 0 )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_abs( &TA, &TA, &TB ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &TA, 1 ) );
> + }
> + else
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_abs( &TB, &TB, &TA ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &TB, 1 ) );
> + }
> + }
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_l( &TB, lz ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( G, &TB ) );
> +
> +cleanup:
> +
> + mbedtls_mpi_free( &TG ); mbedtls_mpi_free( &TA ); mbedtls_mpi_free( &TB );
> +
> + return( ret );
> +}
> +
> +/*
> + * Fill X with size bytes of random.
> + *
> + * Use a temporary bytes representation to make sure the result is the same
> + * regardless of the platform endianness (useful when f_rng is actually
> + * deterministic, eg for tests).
> + */
> +int mbedtls_mpi_fill_random( mbedtls_mpi *X, size_t size,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng )
> +{
> + int ret;
> + unsigned char buf[MBEDTLS_MPI_MAX_SIZE];
> +
> + if( size > MBEDTLS_MPI_MAX_SIZE )
> + return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
> +
> + MBEDTLS_MPI_CHK( f_rng( p_rng, buf, size ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( X, buf, size ) );
> +
> +cleanup:
> + return( ret );
> +}
> +
> +/*
> + * Modular inverse: X = A^-1 mod N (HAC 14.61 / 14.64)
> + */
> +int mbedtls_mpi_inv_mod( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *N )
> +{
> + int ret;
> + mbedtls_mpi G, TA, TU, U1, U2, TB, TV, V1, V2;
> +
> + if( mbedtls_mpi_cmp_int( N, 1 ) <= 0 )
> + return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
> +
> + mbedtls_mpi_init( &TA ); mbedtls_mpi_init( &TU ); mbedtls_mpi_init( &U1 ); mbedtls_mpi_init( &U2 );
> + mbedtls_mpi_init( &G ); mbedtls_mpi_init( &TB ); mbedtls_mpi_init( &TV );
> + mbedtls_mpi_init( &V1 ); mbedtls_mpi_init( &V2 );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_gcd( &G, A, N ) );
> +
> + if( mbedtls_mpi_cmp_int( &G, 1 ) != 0 )
> + {
> + ret = MBEDTLS_ERR_MPI_NOT_ACCEPTABLE;
> + goto cleanup;
> + }
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &TA, A, N ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &TU, &TA ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &TB, N ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &TV, N ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &U1, 1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &U2, 0 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &V1, 0 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &V2, 1 ) );
> +
> + do
> + {
> + while( ( TU.p[0] & 1 ) == 0 )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &TU, 1 ) );
> +
> + if( ( U1.p[0] & 1 ) != 0 || ( U2.p[0] & 1 ) != 0 )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &U1, &U1, &TB ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &U2, &U2, &TA ) );
> + }
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &U1, 1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &U2, 1 ) );
> + }
> +
> + while( ( TV.p[0] & 1 ) == 0 )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &TV, 1 ) );
> +
> + if( ( V1.p[0] & 1 ) != 0 || ( V2.p[0] & 1 ) != 0 )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &V1, &V1, &TB ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &V2, &V2, &TA ) );
> + }
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &V1, 1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &V2, 1 ) );
> + }
> +
> + if( mbedtls_mpi_cmp_mpi( &TU, &TV ) >= 0 )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &TU, &TU, &TV ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &U1, &U1, &V1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &U2, &U2, &V2 ) );
> + }
> + else
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &TV, &TV, &TU ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &V1, &V1, &U1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &V2, &V2, &U2 ) );
> + }
> + }
> + while( mbedtls_mpi_cmp_int( &TU, 0 ) != 0 );
> +
> + while( mbedtls_mpi_cmp_int( &V1, 0 ) < 0 )
> + MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &V1, &V1, N ) );
> +
> + while( mbedtls_mpi_cmp_mpi( &V1, N ) >= 0 )
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &V1, &V1, N ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( X, &V1 ) );
> +
> +cleanup:
> +
> + mbedtls_mpi_free( &TA ); mbedtls_mpi_free( &TU ); mbedtls_mpi_free( &U1 ); mbedtls_mpi_free( &U2 );
> + mbedtls_mpi_free( &G ); mbedtls_mpi_free( &TB ); mbedtls_mpi_free( &TV );
> + mbedtls_mpi_free( &V1 ); mbedtls_mpi_free( &V2 );
> +
> + return( ret );
> +}
> +
> +#if defined(MBEDTLS_GENPRIME)
> +
> +static const int small_prime[] =
> +{
> + 3, 5, 7, 11, 13, 17, 19, 23,
> + 29, 31, 37, 41, 43, 47, 53, 59,
> + 61, 67, 71, 73, 79, 83, 89, 97,
> + 101, 103, 107, 109, 113, 127, 131, 137,
> + 139, 149, 151, 157, 163, 167, 173, 179,
> + 181, 191, 193, 197, 199, 211, 223, 227,
> + 229, 233, 239, 241, 251, 257, 263, 269,
> + 271, 277, 281, 283, 293, 307, 311, 313,
> + 317, 331, 337, 347, 349, 353, 359, 367,
> + 373, 379, 383, 389, 397, 401, 409, 419,
> + 421, 431, 433, 439, 443, 449, 457, 461,
> + 463, 467, 479, 487, 491, 499, 503, 509,
> + 521, 523, 541, 547, 557, 563, 569, 571,
> + 577, 587, 593, 599, 601, 607, 613, 617,
> + 619, 631, 641, 643, 647, 653, 659, 661,
> + 673, 677, 683, 691, 701, 709, 719, 727,
> + 733, 739, 743, 751, 757, 761, 769, 773,
> + 787, 797, 809, 811, 821, 823, 827, 829,
> + 839, 853, 857, 859, 863, 877, 881, 883,
> + 887, 907, 911, 919, 929, 937, 941, 947,
> + 953, 967, 971, 977, 983, 991, 997, -103
> +};
> +
> +/*
> + * Small divisors test (X must be positive)
> + *
> + * Return values:
> + * 0: no small factor (possible prime, more tests needed)
> + * 1: certain prime
> + * MBEDTLS_ERR_MPI_NOT_ACCEPTABLE: certain non-prime
> + * other negative: error
> + */
> +static int mpi_check_small_factors( const mbedtls_mpi *X )
> +{
> + int ret = 0;
> + size_t i;
> + mbedtls_mpi_uint r;
> +
> + if( ( X->p[0] & 1 ) == 0 )
> + return( MBEDTLS_ERR_MPI_NOT_ACCEPTABLE );
> +
> + for( i = 0; small_prime[i] > 0; i++ )
> + {
> + if( mbedtls_mpi_cmp_int( X, small_prime[i] ) <= 0 )
> + return( 1 );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_int( &r, X, small_prime[i] ) );
> +
> + if( r == 0 )
> + return( MBEDTLS_ERR_MPI_NOT_ACCEPTABLE );
> + }
> +
> +cleanup:
> + return( ret );
> +}
> +
> +/*
> + * Miller-Rabin pseudo-primality test (HAC 4.24)
> + */
> +static int mpi_miller_rabin( const mbedtls_mpi *X,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng )
> +{
> + int ret, count;
> + size_t i, j, k, n, s;
> + mbedtls_mpi W, R, T, A, RR;
> +
> + mbedtls_mpi_init( &W ); mbedtls_mpi_init( &R ); mbedtls_mpi_init( &T ); mbedtls_mpi_init( &A );
> + mbedtls_mpi_init( &RR );
> +
> + /*
> + * W = |X| - 1
> + * R = W >> lsb( W )
> + */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &W, X, 1 ) );
> + s = mbedtls_mpi_lsb( &W );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &R, &W ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &R, s ) );
> +
> + i = mbedtls_mpi_bitlen( X );
> + /*
> + * HAC, table 4.4
> + */
> + n = ( ( i >= 1300 ) ? 2 : ( i >= 850 ) ? 3 :
> + ( i >= 650 ) ? 4 : ( i >= 350 ) ? 8 :
> + ( i >= 250 ) ? 12 : ( i >= 150 ) ? 18 : 27 );
> +
> + for( i = 0; i < n; i++ )
> + {
> + /*
> + * pick a random A, 1 < A < |X| - 1
> + */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( &A, X->n * ciL, f_rng, p_rng ) );
> +
> + if( mbedtls_mpi_cmp_mpi( &A, &W ) >= 0 )
> + {
> + j = mbedtls_mpi_bitlen( &A ) - mbedtls_mpi_bitlen( &W );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &A, j + 1 ) );
> + }
> + A.p[0] |= 3;
> +
> + count = 0;
> + do {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( &A, X->n * ciL, f_rng, p_rng ) );
> +
> + j = mbedtls_mpi_bitlen( &A );
> + k = mbedtls_mpi_bitlen( &W );
> + if (j > k) {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &A, j - k ) );
> + }
> +
> + if (count++ > 30) {
> + return MBEDTLS_ERR_MPI_NOT_ACCEPTABLE;
> + }
> +
> + } while ( mbedtls_mpi_cmp_mpi( &A, &W ) >= 0 ||
> + mbedtls_mpi_cmp_int( &A, 1 ) <= 0 );
> +
> + /*
> + * A = A^R mod |X|
> + */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_exp_mod( &A, &A, &R, X, &RR ) );
> +
> + if( mbedtls_mpi_cmp_mpi( &A, &W ) == 0 ||
> + mbedtls_mpi_cmp_int( &A, 1 ) == 0 )
> + continue;
> +
> + j = 1;
> + while( j < s && mbedtls_mpi_cmp_mpi( &A, &W ) != 0 )
> + {
> + /*
> + * A = A * A mod |X|
> + */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &T, &A, &A ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &A, &T, X ) );
> +
> + if( mbedtls_mpi_cmp_int( &A, 1 ) == 0 )
> + break;
> +
> + j++;
> + }
> +
> + /*
> + * not prime if A != |X| - 1 or A == 1
> + */
> + if( mbedtls_mpi_cmp_mpi( &A, &W ) != 0 ||
> + mbedtls_mpi_cmp_int( &A, 1 ) == 0 )
> + {
> + ret = MBEDTLS_ERR_MPI_NOT_ACCEPTABLE;
> + break;
> + }
> + }
> +
> +cleanup:
> + mbedtls_mpi_free( &W ); mbedtls_mpi_free( &R ); mbedtls_mpi_free( &T ); mbedtls_mpi_free( &A );
> + mbedtls_mpi_free( &RR );
> +
> + return( ret );
> +}
> +
> +/*
> + * Pseudo-primality test: small factors, then Miller-Rabin
> + */
> +int mbedtls_mpi_is_prime( const mbedtls_mpi *X,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng )
> +{
> + int ret;
> + mbedtls_mpi XX;
> +
> + XX.s = 1;
> + XX.n = X->n;
> + XX.p = X->p;
> +
> + if( mbedtls_mpi_cmp_int( &XX, 0 ) == 0 ||
> + mbedtls_mpi_cmp_int( &XX, 1 ) == 0 )
> + return( MBEDTLS_ERR_MPI_NOT_ACCEPTABLE );
> +
> + if( mbedtls_mpi_cmp_int( &XX, 2 ) == 0 )
> + return( 0 );
> +
> + if( ( ret = mpi_check_small_factors( &XX ) ) != 0 )
> + {
> + if( ret == 1 )
> + return( 0 );
> +
> + return( ret );
> + }
> +
> + return( mpi_miller_rabin( &XX, f_rng, p_rng ) );
> +}
> +
> +/*
> + * Prime number generation
> + */
> +int mbedtls_mpi_gen_prime( mbedtls_mpi *X, size_t nbits, int dh_flag,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng )
> +{
> + int ret;
> + size_t k, n;
> + mbedtls_mpi_uint r;
> + mbedtls_mpi Y;
> +
> + if( nbits < 3 || nbits > MBEDTLS_MPI_MAX_BITS )
> + return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
> +
> + mbedtls_mpi_init( &Y );
> +
> + n = BITS_TO_LIMBS( nbits );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( X, n * ciL, f_rng, p_rng ) );
> +
> + k = mbedtls_mpi_bitlen( X );
> + if( k > nbits ) MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( X, k - nbits + 1 ) );
> +
> + mbedtls_mpi_set_bit( X, nbits-1, 1 );
> +
> + X->p[0] |= 1;
> +
> + if( dh_flag == 0 )
> + {
> + while( ( ret = mbedtls_mpi_is_prime( X, f_rng, p_rng ) ) != 0 )
> + {
> + if( ret != MBEDTLS_ERR_MPI_NOT_ACCEPTABLE )
> + goto cleanup;
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_add_int( X, X, 2 ) );
> + }
> + }
> + else
> + {
> + /*
> + * An necessary condition for Y and X = 2Y + 1 to be prime
> + * is X = 2 mod 3 (which is equivalent to Y = 2 mod 3).
> + * Make sure it is satisfied, while keeping X = 3 mod 4
> + */
> +
> + X->p[0] |= 2;
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_int( &r, X, 3 ) );
> + if( r == 0 )
> + MBEDTLS_MPI_CHK( mbedtls_mpi_add_int( X, X, 8 ) );
> + else if( r == 1 )
> + MBEDTLS_MPI_CHK( mbedtls_mpi_add_int( X, X, 4 ) );
> +
> + /* Set Y = (X-1) / 2, which is X / 2 because X is odd */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &Y, X ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &Y, 1 ) );
> +
> + while( 1 )
> + {
> + /*
> + * First, check small factors for X and Y
> + * before doing Miller-Rabin on any of them
> + */
> + if( ( ret = mpi_check_small_factors( X ) ) == 0 &&
> + ( ret = mpi_check_small_factors( &Y ) ) == 0 &&
> + ( ret = mpi_miller_rabin( X, f_rng, p_rng ) ) == 0 &&
> + ( ret = mpi_miller_rabin( &Y, f_rng, p_rng ) ) == 0 )
> + {
> + break;
> + }
> +
> + if( ret != MBEDTLS_ERR_MPI_NOT_ACCEPTABLE )
> + goto cleanup;
> +
> + /*
> + * Next candidates. We want to preserve Y = (X-1) / 2 and
> + * Y = 1 mod 2 and Y = 2 mod 3 (eq X = 3 mod 4 and X = 2 mod 3)
> + * so up Y by 6 and X by 12.
> + */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_add_int( X, X, 12 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_add_int( &Y, &Y, 6 ) );
> + }
> + }
> +
> +cleanup:
> +
> + mbedtls_mpi_free( &Y );
> +
> + return( ret );
> +}
> +
> +#endif /* MBEDTLS_GENPRIME */
> +
> +#if defined(MBEDTLS_SELF_TEST)
> +
> +#define GCD_PAIR_COUNT 3
> +
> +static const int gcd_pairs[GCD_PAIR_COUNT][3] =
> +{
> + { 693, 609, 21 },
> + { 1764, 868, 28 },
> + { 768454923, 542167814, 1 }
> +};
> +
> +/*
> + * Checkup routine
> + */
> +int mbedtls_mpi_self_test( int verbose )
> +{
> + int ret, i;
> + mbedtls_mpi A, E, N, X, Y, U, V;
> +
> + mbedtls_mpi_init( &A ); mbedtls_mpi_init( &E ); mbedtls_mpi_init( &N ); mbedtls_mpi_init( &X );
> + mbedtls_mpi_init( &Y ); mbedtls_mpi_init( &U ); mbedtls_mpi_init( &V );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &A, 16,
> + "EFE021C2645FD1DC586E69184AF4A31E" \
> + "D5F53E93B5F123FA41680867BA110131" \
> + "944FE7952E2517337780CB0DB80E61AA" \
> + "E7C8DDC6C5C6AADEB34EB38A2F40D5E6" ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &E, 16,
> + "B2E7EFD37075B9F03FF989C7C5051C20" \
> + "34D2A323810251127E7BF8625A4F49A5" \
> + "F3E27F4DA8BD59C47D6DAABA4C8127BD" \
> + "5B5C25763222FEFCCFC38B832366C29E" ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &N, 16,
> + "0066A198186C18C10B2F5ED9B522752A" \
> + "9830B69916E535C8F047518A889A43A5" \
> + "94B6BED27A168D31D4A52F88925AA8F5" ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &X, &A, &N ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &U, 16,
> + "602AB7ECA597A3D6B56FF9829A5E8B85" \
> + "9E857EA95A03512E2BAE7391688D264A" \
> + "A5663B0341DB9CCFD2C4C5F421FEC814" \
> + "8001B72E848A38CAE1C65F78E56ABDEF" \
> + "E12D3C039B8A02D6BE593F0BBBDA56F1" \
> + "ECF677152EF804370C1A305CAF3B5BF1" \
> + "30879B56C61DE584A0F53A2447A51E" ) );
> +
> + if( verbose != 0 )
> + mbedtls_printf( " MPI test #1 (mul_mpi): " );
> +
> + if( mbedtls_mpi_cmp_mpi( &X, &U ) != 0 )
> + {
> + if( verbose != 0 )
> + mbedtls_printf( "failed\n" );
> +
> + ret = 1;
> + goto cleanup;
> + }
> +
> + if( verbose != 0 )
> + mbedtls_printf( "passed\n" );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_div_mpi( &X, &Y, &A, &N ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &U, 16,
> + "256567336059E52CAE22925474705F39A94" ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &V, 16,
> + "6613F26162223DF488E9CD48CC132C7A" \
> + "0AC93C701B001B092E4E5B9F73BCD27B" \
> + "9EE50D0657C77F374E903CDFA4C642" ) );
> +
> + if( verbose != 0 )
> + mbedtls_printf( " MPI test #2 (div_mpi): " );
> +
> + if( mbedtls_mpi_cmp_mpi( &X, &U ) != 0 ||
> + mbedtls_mpi_cmp_mpi( &Y, &V ) != 0 )
> + {
> + if( verbose != 0 )
> + mbedtls_printf( "failed\n" );
> +
> + ret = 1;
> + goto cleanup;
> + }
> +
> + if( verbose != 0 )
> + mbedtls_printf( "passed\n" );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_exp_mod( &X, &A, &E, &N, NULL ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &U, 16,
> + "36E139AEA55215609D2816998ED020BB" \
> + "BD96C37890F65171D948E9BC7CBAA4D9" \
> + "325D24D6A3C12710F10A09FA08AB87" ) );
> +
> + if( verbose != 0 )
> + mbedtls_printf( " MPI test #3 (exp_mod): " );
> +
> + if( mbedtls_mpi_cmp_mpi( &X, &U ) != 0 )
> + {
> + if( verbose != 0 )
> + mbedtls_printf( "failed\n" );
> +
> + ret = 1;
> + goto cleanup;
> + }
> +
> + if( verbose != 0 )
> + mbedtls_printf( "passed\n" );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_inv_mod( &X, &A, &N ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &U, 16,
> + "003A0AAEDD7E784FC07D8F9EC6E3BFD5" \
> + "C3DBA76456363A10869622EAC2DD84EC" \
> + "C5B8A74DAC4D09E03B5E0BE779F2DF61" ) );
> +
> + if( verbose != 0 )
> + mbedtls_printf( " MPI test #4 (inv_mod): " );
> +
> + if( mbedtls_mpi_cmp_mpi( &X, &U ) != 0 )
> + {
> + if( verbose != 0 )
> + mbedtls_printf( "failed\n" );
> +
> + ret = 1;
> + goto cleanup;
> + }
> +
> + if( verbose != 0 )
> + mbedtls_printf( "passed\n" );
> +
> + if( verbose != 0 )
> + mbedtls_printf( " MPI test #5 (simple gcd): " );
> +
> + for( i = 0; i < GCD_PAIR_COUNT; i++ )
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &X, gcd_pairs[i][0] ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &Y, gcd_pairs[i][1] ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_gcd( &A, &X, &Y ) );
> +
> + if( mbedtls_mpi_cmp_int( &A, gcd_pairs[i][2] ) != 0 )
> + {
> + if( verbose != 0 )
> + mbedtls_printf( "failed at %d\n", i );
> +
> + ret = 1;
> + goto cleanup;
> + }
> + }
> +
> + if( verbose != 0 )
> + mbedtls_printf( "passed\n" );
> +
> +cleanup:
> +
> + if( ret != 0 && verbose != 0 )
> + mbedtls_printf( "Unexpected error, return code = %08X\n", ret );
> +
> + mbedtls_mpi_free( &A ); mbedtls_mpi_free( &E ); mbedtls_mpi_free( &N ); mbedtls_mpi_free( &X );
> + mbedtls_mpi_free( &Y ); mbedtls_mpi_free( &U ); mbedtls_mpi_free( &V );
> +
> + if( verbose != 0 )
> + mbedtls_printf( "\n" );
> +
> + return( ret );
> +}
> +
> +#endif /* MBEDTLS_SELF_TEST */
> +
> +#endif /* MBEDTLS_BIGNUM_C */
> diff --git a/backport/compat/verification/key.c b/backport/compat/verification/key.c
> new file mode 100644
> index 000000000000..31b5b6e95057
> --- /dev/null
> +++ b/backport/compat/verification/key.c
> @@ -0,0 +1,151 @@
> +#include <linux/export.h>
> +#include <linux/slab.h>
> +#include <linux/key.h>
> +#include <keys/asymmetric-type.h>
> +#include "x509_parser.h"
> +
> +static void keyring_clear(struct key *keyring)
> +{
> + struct key *key, *tmp;
> +
> + if (!keyring->keyring)
> + return;
> +
> + list_for_each_entry_safe(key, tmp, &keyring->list, list) {
> + WARN_ON(refcount_read(&key->refcount) > 1);
> + key_put(key);
> + }
> +}
> +
> +void key_put(struct key *key)
> +{
> + if (refcount_dec_and_test(&key->refcount)) {
> + keyring_clear(key);
> + list_del(&key->list);
> + kfree(key->description);
> + kfree(key);
> + }
> +}
> +EXPORT_SYMBOL_GPL(key_put);
> +
> +static struct key *key_alloc(void)
> +{
> + struct key *key = kzalloc(sizeof(*key), GFP_KERNEL);
> +
> + if (!key)
> + return NULL;
> + refcount_set(&key->refcount, 1);
> + INIT_LIST_HEAD(&key->list);
> +
> + return key;
> +}
> +
> +struct key *bp_keyring_alloc(void)
> +{
> + struct key *key = key_alloc();
> +
> + if (!key)
> + return NULL;
> +
> + key->keyring = true;
> +
> + return key;
> +}
> +EXPORT_SYMBOL_GPL(bp_keyring_alloc);
> +
> +key_ref_t bp_key_create_or_update(key_ref_t keyring,
> + const char *description,
> + const void *payload,
> + size_t plen)
> +{
> + struct key *key = key_alloc();
> + struct x509_certificate *cert;
> + const char *q;
> + size_t srlen, sulen;
> + char *desc = NULL, *p;
> + int err;
> +
> + if (!key)
> + return NULL;
> +
> + cert = x509_cert_parse(payload, plen);
> + if (IS_ERR(cert)) {
> + err = PTR_ERR(cert);
> + goto free;
> + }
> +
> + if (cert->unsupported_sig) {
> + public_key_signature_free(cert->sig);
> + cert->sig = NULL;
> + }
> +
> + sulen = strlen(cert->subject);
> + if (cert->raw_skid) {
> + srlen = cert->raw_skid_size;
> + q = cert->raw_skid;
> + } else {
> + srlen = cert->raw_serial_size;
> + q = cert->raw_serial;
> + }
> +
> + err = -ENOMEM;
> + desc = kmalloc(sulen + 2 + srlen * 2 + 1, GFP_KERNEL);
> + if (!desc)
> + goto free;
> + p = memcpy(desc, cert->subject, sulen);
> + p += sulen;
> + *p++ = ':';
> + *p++ = ' ';
> + p = bin2hex(p, q, srlen);
> + *p = 0;
> + key->description = desc;
> +
> + key->kids.id[0] = cert->id;
> + key->kids.id[1] = cert->skid;
> + key->public_key = cert->pub;
> + key->sig = cert->sig;
> +
> + cert->id = NULL;
> + cert->skid = NULL;
> + cert->pub = NULL;
> + cert->sig = NULL;
> + x509_free_certificate(cert);
> +
> + refcount_inc(&key->refcount);
> + list_add_tail(&key->list, &key_ref_to_ptr(keyring)->list);
> +
> + return make_key_ref(key, 0);
> +free:
> + kfree(key);
> + return ERR_PTR(err);
> +}
> +EXPORT_SYMBOL_GPL(bp_key_create_or_update);
> +
> +struct key *find_asymmetric_key(struct key *keyring,
> + const struct asymmetric_key_id *id_0,
> + const struct asymmetric_key_id *id_1,
> + bool partial)
> +{
> + struct key *key;
> +
> + if (WARN_ON(partial))
> + return ERR_PTR(-ENOENT);
> + if (WARN_ON(!keyring))
> + return ERR_PTR(-EINVAL);
> +
> + list_for_each_entry(key, &keyring->list, list) {
> + const struct asymmetric_key_ids *kids = &key->kids;
> +
> + if (id_0 && (!kids->id[0] ||
> + !asymmetric_key_id_same(id_0, kids->id[0])))
> + continue;
> + if (id_1 && (!kids->id[1] ||
> + !asymmetric_key_id_same(id_0, kids->id[1])))
> + continue;
> +
> + refcount_inc(&key->refcount);
> + return key;
> + }
> +
> + return ERR_PTR(-ENOKEY);
> +}
> diff --git a/backport/compat/verification/mbedtls/asn1.h b/backport/compat/verification/mbedtls/asn1.h
> new file mode 100644
> index 000000000000..bc6b48b8d9ce
> --- /dev/null
> +++ b/backport/compat/verification/mbedtls/asn1.h
> @@ -0,0 +1,344 @@
> +/**
> + * \file asn1.h
> + *
> + * \brief Generic ASN.1 parsing
> + *
> + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
> + * SPDX-License-Identifier: GPL-2.0
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * This file is part of mbed TLS (https://tls.mbed.org)
> + */
> +#ifndef MBEDTLS_ASN1_H
> +#define MBEDTLS_ASN1_H
> +
> +#if !defined(MBEDTLS_CONFIG_FILE)
> +#include "config.h"
> +#else
> +#include MBEDTLS_CONFIG_FILE
> +#endif
> +
> +#include <stddef.h>
> +
> +#if defined(MBEDTLS_BIGNUM_C)
> +#include "bignum.h"
> +#endif
> +
> +/**
> + * \addtogroup asn1_module
> + * \{
> + */
> +
> +/**
> + * \name ASN1 Error codes
> + * These error codes are OR'ed to X509 error codes for
> + * higher error granularity.
> + * ASN1 is a standard to specify data structures.
> + * \{
> + */
> +#define MBEDTLS_ERR_ASN1_OUT_OF_DATA -0x0060 /**< Out of data when parsing an ASN1 data structure. */
> +#define MBEDTLS_ERR_ASN1_UNEXPECTED_TAG -0x0062 /**< ASN1 tag was of an unexpected value. */
> +#define MBEDTLS_ERR_ASN1_INVALID_LENGTH -0x0064 /**< Error when trying to determine the length or invalid length. */
> +#define MBEDTLS_ERR_ASN1_LENGTH_MISMATCH -0x0066 /**< Actual length differs from expected length. */
> +#define MBEDTLS_ERR_ASN1_INVALID_DATA -0x0068 /**< Data is invalid. (not used) */
> +#define MBEDTLS_ERR_ASN1_ALLOC_FAILED -0x006A /**< Memory allocation failed */
> +#define MBEDTLS_ERR_ASN1_BUF_TOO_SMALL -0x006C /**< Buffer too small when writing ASN.1 data structure. */
> +
> +/* \} name */
> +
> +/**
> + * \name DER constants
> + * These constants comply with DER encoded the ANS1 type tags.
> + * DER encoding uses hexadecimal representation.
> + * An example DER sequence is:\n
> + * - 0x02 -- tag indicating INTEGER
> + * - 0x01 -- length in octets
> + * - 0x05 -- value
> + * Such sequences are typically read into \c ::mbedtls_x509_buf.
> + * \{
> + */
> +#define MBEDTLS_ASN1_BOOLEAN 0x01
> +#define MBEDTLS_ASN1_INTEGER 0x02
> +#define MBEDTLS_ASN1_BIT_STRING 0x03
> +#define MBEDTLS_ASN1_OCTET_STRING 0x04
> +#define MBEDTLS_ASN1_NULL 0x05
> +#define MBEDTLS_ASN1_OID 0x06
> +#define MBEDTLS_ASN1_UTF8_STRING 0x0C
> +#define MBEDTLS_ASN1_SEQUENCE 0x10
> +#define MBEDTLS_ASN1_SET 0x11
> +#define MBEDTLS_ASN1_PRINTABLE_STRING 0x13
> +#define MBEDTLS_ASN1_T61_STRING 0x14
> +#define MBEDTLS_ASN1_IA5_STRING 0x16
> +#define MBEDTLS_ASN1_UTC_TIME 0x17
> +#define MBEDTLS_ASN1_GENERALIZED_TIME 0x18
> +#define MBEDTLS_ASN1_UNIVERSAL_STRING 0x1C
> +#define MBEDTLS_ASN1_BMP_STRING 0x1E
> +#define MBEDTLS_ASN1_PRIMITIVE 0x00
> +#define MBEDTLS_ASN1_CONSTRUCTED 0x20
> +#define MBEDTLS_ASN1_CONTEXT_SPECIFIC 0x80
> +/* \} name */
> +/* \} addtogroup asn1_module */
> +
> +/** Returns the size of the binary string, without the trailing \\0 */
> +#define MBEDTLS_OID_SIZE(x) (sizeof(x) - 1)
> +
> +/**
> + * Compares an mbedtls_asn1_buf structure to a reference OID.
> + *
> + * Only works for 'defined' oid_str values (MBEDTLS_OID_HMAC_SHA1), you cannot use a
> + * 'unsigned char *oid' here!
> + */
> +#define MBEDTLS_OID_CMP(oid_str, oid_buf) \
> + ( ( MBEDTLS_OID_SIZE(oid_str) != (oid_buf)->len ) || \
> + memcmp( (oid_str), (oid_buf)->p, (oid_buf)->len) != 0 )
> +
> +#ifdef __cplusplus
> +extern "C" {
> +#endif
> +
> +/**
> + * \name Functions to parse ASN.1 data structures
> + * \{
> + */
> +
> +/**
> + * Type-length-value structure that allows for ASN1 using DER.
> + */
> +typedef struct mbedtls_asn1_buf
> +{
> + int tag; /**< ASN1 type, e.g. MBEDTLS_ASN1_UTF8_STRING. */
> + size_t len; /**< ASN1 length, in octets. */
> + unsigned char *p; /**< ASN1 data, e.g. in ASCII. */
> +}
> +mbedtls_asn1_buf;
> +
> +/**
> + * Container for ASN1 bit strings.
> + */
> +typedef struct mbedtls_asn1_bitstring
> +{
> + size_t len; /**< ASN1 length, in octets. */
> + unsigned char unused_bits; /**< Number of unused bits at the end of the string */
> + unsigned char *p; /**< Raw ASN1 data for the bit string */
> +}
> +mbedtls_asn1_bitstring;
> +
> +/**
> + * Container for a sequence of ASN.1 items
> + */
> +typedef struct mbedtls_asn1_sequence
> +{
> + mbedtls_asn1_buf buf; /**< Buffer containing the given ASN.1 item. */
> + struct mbedtls_asn1_sequence *next; /**< The next entry in the sequence. */
> +}
> +mbedtls_asn1_sequence;
> +
> +/**
> + * Container for a sequence or list of 'named' ASN.1 data items
> + */
> +typedef struct mbedtls_asn1_named_data
> +{
> + mbedtls_asn1_buf oid; /**< The object identifier. */
> + mbedtls_asn1_buf val; /**< The named value. */
> + struct mbedtls_asn1_named_data *next; /**< The next entry in the sequence. */
> + unsigned char next_merged; /**< Merge next item into the current one? */
> +}
> +mbedtls_asn1_named_data;
> +
> +/**
> + * \brief Get the length of an ASN.1 element.
> + * Updates the pointer to immediately behind the length.
> + *
> + * \param p The position in the ASN.1 data
> + * \param end End of data
> + * \param len The variable that will receive the value
> + *
> + * \return 0 if successful, MBEDTLS_ERR_ASN1_OUT_OF_DATA on reaching
> + * end of data, MBEDTLS_ERR_ASN1_INVALID_LENGTH if length is
> + * unparseable.
> + */
> +int mbedtls_asn1_get_len( unsigned char **p,
> + const unsigned char *end,
> + size_t *len );
> +
> +/**
> + * \brief Get the tag and length of the tag. Check for the requested tag.
> + * Updates the pointer to immediately behind the tag and length.
> + *
> + * \param p The position in the ASN.1 data
> + * \param end End of data
> + * \param len The variable that will receive the length
> + * \param tag The expected tag
> + *
> + * \return 0 if successful, MBEDTLS_ERR_ASN1_UNEXPECTED_TAG if tag did
> + * not match requested tag, or another specific ASN.1 error code.
> + */
> +int mbedtls_asn1_get_tag( unsigned char **p,
> + const unsigned char *end,
> + size_t *len, int tag );
> +
> +/**
> + * \brief Retrieve a boolean ASN.1 tag and its value.
> + * Updates the pointer to immediately behind the full tag.
> + *
> + * \param p The position in the ASN.1 data
> + * \param end End of data
> + * \param val The variable that will receive the value
> + *
> + * \return 0 if successful or a specific ASN.1 error code.
> + */
> +int mbedtls_asn1_get_bool( unsigned char **p,
> + const unsigned char *end,
> + int *val );
> +
> +/**
> + * \brief Retrieve an integer ASN.1 tag and its value.
> + * Updates the pointer to immediately behind the full tag.
> + *
> + * \param p The position in the ASN.1 data
> + * \param end End of data
> + * \param val The variable that will receive the value
> + *
> + * \return 0 if successful or a specific ASN.1 error code.
> + */
> +int mbedtls_asn1_get_int( unsigned char **p,
> + const unsigned char *end,
> + int *val );
> +
> +/**
> + * \brief Retrieve a bitstring ASN.1 tag and its value.
> + * Updates the pointer to immediately behind the full tag.
> + *
> + * \param p The position in the ASN.1 data
> + * \param end End of data
> + * \param bs The variable that will receive the value
> + *
> + * \return 0 if successful or a specific ASN.1 error code.
> + */
> +int mbedtls_asn1_get_bitstring( unsigned char **p, const unsigned char *end,
> + mbedtls_asn1_bitstring *bs);
> +
> +/**
> + * \brief Retrieve a bitstring ASN.1 tag without unused bits and its
> + * value.
> + * Updates the pointer to the beginning of the bit/octet string.
> + *
> + * \param p The position in the ASN.1 data
> + * \param end End of data
> + * \param len Length of the actual bit/octect string in bytes
> + *
> + * \return 0 if successful or a specific ASN.1 error code.
> + */
> +int mbedtls_asn1_get_bitstring_null( unsigned char **p, const unsigned char *end,
> + size_t *len );
> +
> +/**
> + * \brief Parses and splits an ASN.1 "SEQUENCE OF <tag>"
> + * Updated the pointer to immediately behind the full sequence tag.
> + *
> + * \param p The position in the ASN.1 data
> + * \param end End of data
> + * \param cur First variable in the chain to fill
> + * \param tag Type of sequence
> + *
> + * \return 0 if successful or a specific ASN.1 error code.
> + */
> +int mbedtls_asn1_get_sequence_of( unsigned char **p,
> + const unsigned char *end,
> + mbedtls_asn1_sequence *cur,
> + int tag);
> +
> +#if defined(MBEDTLS_BIGNUM_C)
> +/**
> + * \brief Retrieve a MPI value from an integer ASN.1 tag.
> + * Updates the pointer to immediately behind the full tag.
> + *
> + * \param p The position in the ASN.1 data
> + * \param end End of data
> + * \param X The MPI that will receive the value
> + *
> + * \return 0 if successful or a specific ASN.1 or MPI error code.
> + */
> +int mbedtls_asn1_get_mpi( unsigned char **p,
> + const unsigned char *end,
> + mbedtls_mpi *X );
> +#endif /* MBEDTLS_BIGNUM_C */
> +
> +/**
> + * \brief Retrieve an AlgorithmIdentifier ASN.1 sequence.
> + * Updates the pointer to immediately behind the full
> + * AlgorithmIdentifier.
> + *
> + * \param p The position in the ASN.1 data
> + * \param end End of data
> + * \param alg The buffer to receive the OID
> + * \param params The buffer to receive the params (if any)
> + *
> + * \return 0 if successful or a specific ASN.1 or MPI error code.
> + */
> +int mbedtls_asn1_get_alg( unsigned char **p,
> + const unsigned char *end,
> + mbedtls_asn1_buf *alg, mbedtls_asn1_buf *params );
> +
> +/**
> + * \brief Retrieve an AlgorithmIdentifier ASN.1 sequence with NULL or no
> + * params.
> + * Updates the pointer to immediately behind the full
> + * AlgorithmIdentifier.
> + *
> + * \param p The position in the ASN.1 data
> + * \param end End of data
> + * \param alg The buffer to receive the OID
> + *
> + * \return 0 if successful or a specific ASN.1 or MPI error code.
> + */
> +int mbedtls_asn1_get_alg_null( unsigned char **p,
> + const unsigned char *end,
> + mbedtls_asn1_buf *alg );
> +
> +/**
> + * \brief Find a specific named_data entry in a sequence or list based on
> + * the OID.
> + *
> + * \param list The list to seek through
> + * \param oid The OID to look for
> + * \param len Size of the OID
> + *
> + * \return NULL if not found, or a pointer to the existing entry.
> + */
> +mbedtls_asn1_named_data *mbedtls_asn1_find_named_data( mbedtls_asn1_named_data *list,
> + const char *oid, size_t len );
> +
> +/**
> + * \brief Free a mbedtls_asn1_named_data entry
> + *
> + * \param entry The named data entry to free
> + */
> +void mbedtls_asn1_free_named_data( mbedtls_asn1_named_data *entry );
> +
> +/**
> + * \brief Free all entries in a mbedtls_asn1_named_data list
> + * Head will be set to NULL
> + *
> + * \param head Pointer to the head of the list of named data entries to free
> + */
> +void mbedtls_asn1_free_named_data_list( mbedtls_asn1_named_data **head );
> +
> +#ifdef __cplusplus
> +}
> +#endif
> +
> +#endif /* asn1.h */
> diff --git a/backport/compat/verification/mbedtls/bignum.h b/backport/compat/verification/mbedtls/bignum.h
> new file mode 100644
> index 000000000000..69f8e2d90c6d
> --- /dev/null
> +++ b/backport/compat/verification/mbedtls/bignum.h
> @@ -0,0 +1,760 @@
> +/**
> + * \file bignum.h
> + *
> + * \brief Multi-precision integer library
> + *
> + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
> + * SPDX-License-Identifier: GPL-2.0
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * This file is part of mbed TLS (https://tls.mbed.org)
> + */
> +#ifndef MBEDTLS_BIGNUM_H
> +#define MBEDTLS_BIGNUM_H
> +
> +#if !defined(MBEDTLS_CONFIG_FILE)
> +#include "config.h"
> +#else
> +#include MBEDTLS_CONFIG_FILE
> +#endif
> +
> +#if defined(MBEDTLS_FS_IO)
> +#include <stdio.h>
> +#endif
> +
> +#define MBEDTLS_ERR_MPI_FILE_IO_ERROR -0x0002 /**< An error occurred while reading from or writing to a file. */
> +#define MBEDTLS_ERR_MPI_BAD_INPUT_DATA -0x0004 /**< Bad input parameters to function. */
> +#define MBEDTLS_ERR_MPI_INVALID_CHARACTER -0x0006 /**< There is an invalid character in the digit string. */
> +#define MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL -0x0008 /**< The buffer is too small to write to. */
> +#define MBEDTLS_ERR_MPI_NEGATIVE_VALUE -0x000A /**< The input arguments are negative or result in illegal output. */
> +#define MBEDTLS_ERR_MPI_DIVISION_BY_ZERO -0x000C /**< The input argument for division is zero, which is not allowed. */
> +#define MBEDTLS_ERR_MPI_NOT_ACCEPTABLE -0x000E /**< The input arguments are not acceptable. */
> +#define MBEDTLS_ERR_MPI_ALLOC_FAILED -0x0010 /**< Memory allocation failed. */
> +
> +#define MBEDTLS_MPI_CHK(f) do { if( ( ret = f ) != 0 ) goto cleanup; } while( 0 )
> +
> +/*
> + * Maximum size MPIs are allowed to grow to in number of limbs.
> + */
> +#define MBEDTLS_MPI_MAX_LIMBS 10000
> +
> +#if !defined(MBEDTLS_MPI_WINDOW_SIZE)
> +/*
> + * Maximum window size used for modular exponentiation. Default: 6
> + * Minimum value: 1. Maximum value: 6.
> + *
> + * Result is an array of ( 2 << MBEDTLS_MPI_WINDOW_SIZE ) MPIs used
> + * for the sliding window calculation. (So 64 by default)
> + *
> + * Reduction in size, reduces speed.
> + */
> +#define MBEDTLS_MPI_WINDOW_SIZE 6 /**< Maximum windows size used. */
> +#endif /* !MBEDTLS_MPI_WINDOW_SIZE */
> +
> +#if !defined(MBEDTLS_MPI_MAX_SIZE)
> +/*
> + * Maximum size of MPIs allowed in bits and bytes for user-MPIs.
> + * ( Default: 512 bytes => 4096 bits, Maximum tested: 2048 bytes => 16384 bits )
> + *
> + * Note: Calculations can results temporarily in larger MPIs. So the number
> + * of limbs required (MBEDTLS_MPI_MAX_LIMBS) is higher.
> + */
> +#define MBEDTLS_MPI_MAX_SIZE 1024 /**< Maximum number of bytes for usable MPIs. */
> +#endif /* !MBEDTLS_MPI_MAX_SIZE */
> +
> +#define MBEDTLS_MPI_MAX_BITS ( 8 * MBEDTLS_MPI_MAX_SIZE ) /**< Maximum number of bits for usable MPIs. */
> +
> +/*
> + * When reading from files with mbedtls_mpi_read_file() and writing to files with
> + * mbedtls_mpi_write_file() the buffer should have space
> + * for a (short) label, the MPI (in the provided radix), the newline
> + * characters and the '\0'.
> + *
> + * By default we assume at least a 10 char label, a minimum radix of 10
> + * (decimal) and a maximum of 4096 bit numbers (1234 decimal chars).
> + * Autosized at compile time for at least a 10 char label, a minimum radix
> + * of 10 (decimal) for a number of MBEDTLS_MPI_MAX_BITS size.
> + *
> + * This used to be statically sized to 1250 for a maximum of 4096 bit
> + * numbers (1234 decimal chars).
> + *
> + * Calculate using the formula:
> + * MBEDTLS_MPI_RW_BUFFER_SIZE = ceil(MBEDTLS_MPI_MAX_BITS / ln(10) * ln(2)) +
> + * LabelSize + 6
> + */
> +#define MBEDTLS_MPI_MAX_BITS_SCALE100 ( 100 * MBEDTLS_MPI_MAX_BITS )
> +#define MBEDTLS_LN_2_DIV_LN_10_SCALE100 332
> +#define MBEDTLS_MPI_RW_BUFFER_SIZE ( ((MBEDTLS_MPI_MAX_BITS_SCALE100 + MBEDTLS_LN_2_DIV_LN_10_SCALE100 - 1) / MBEDTLS_LN_2_DIV_LN_10_SCALE100) + 10 + 6 )
> +
> +/*
> + * Define the base integer type, architecture-wise.
> + *
> + * 32 or 64-bit integer types can be forced regardless of the underlying
> + * architecture by defining MBEDTLS_HAVE_INT32 or MBEDTLS_HAVE_INT64
> + * respectively and undefining MBEDTLS_HAVE_ASM.
> + *
> + * Double-width integers (e.g. 128-bit in 64-bit architectures) can be
> + * disabled by defining MBEDTLS_NO_UDBL_DIVISION.
> + */
> +#if !defined(MBEDTLS_HAVE_INT32)
> + #if defined(_MSC_VER) && defined(_M_AMD64)
> + /* Always choose 64-bit when using MSC */
> + #if !defined(MBEDTLS_HAVE_INT64)
> + #define MBEDTLS_HAVE_INT64
> + #endif /* !MBEDTLS_HAVE_INT64 */
> + typedef int64_t mbedtls_mpi_sint;
> + typedef uint64_t mbedtls_mpi_uint;
> + #elif defined(__GNUC__) && ( \
> + defined(__amd64__) || defined(__x86_64__) || \
> + defined(__ppc64__) || defined(__powerpc64__) || \
> + defined(__ia64__) || defined(__alpha__) || \
> + ( defined(__sparc__) && defined(__arch64__) ) || \
> + defined(__s390x__) || defined(__mips64) )
> + #if !defined(MBEDTLS_HAVE_INT64)
> + #define MBEDTLS_HAVE_INT64
> + #endif /* MBEDTLS_HAVE_INT64 */
> + typedef int64_t mbedtls_mpi_sint;
> + typedef uint64_t mbedtls_mpi_uint;
> + #if !defined(MBEDTLS_NO_UDBL_DIVISION)
> + /* mbedtls_t_udbl defined as 128-bit unsigned int */
> + typedef unsigned int mbedtls_t_udbl __attribute__((mode(TI)));
> + #define MBEDTLS_HAVE_UDBL
> + #endif /* !MBEDTLS_NO_UDBL_DIVISION */
> + #elif defined(__ARMCC_VERSION) && defined(__aarch64__)
> + /*
> + * __ARMCC_VERSION is defined for both armcc and armclang and
> + * __aarch64__ is only defined by armclang when compiling 64-bit code
> + */
> + #if !defined(MBEDTLS_HAVE_INT64)
> + #define MBEDTLS_HAVE_INT64
> + #endif /* !MBEDTLS_HAVE_INT64 */
> + typedef int64_t mbedtls_mpi_sint;
> + typedef uint64_t mbedtls_mpi_uint;
> + #if !defined(MBEDTLS_NO_UDBL_DIVISION)
> + /* mbedtls_t_udbl defined as 128-bit unsigned int */
> + typedef __uint128_t mbedtls_t_udbl;
> + #define MBEDTLS_HAVE_UDBL
> + #endif /* !MBEDTLS_NO_UDBL_DIVISION */
> + #elif defined(MBEDTLS_HAVE_INT64)
> + /* Force 64-bit integers with unknown compiler */
> + typedef int64_t mbedtls_mpi_sint;
> + typedef uint64_t mbedtls_mpi_uint;
> + #endif
> +#endif /* !MBEDTLS_HAVE_INT32 */
> +
> +#if !defined(MBEDTLS_HAVE_INT64)
> + /* Default to 32-bit compilation */
> + #if !defined(MBEDTLS_HAVE_INT32)
> + #define MBEDTLS_HAVE_INT32
> + #endif /* !MBEDTLS_HAVE_INT32 */
> + typedef int32_t mbedtls_mpi_sint;
> + typedef uint32_t mbedtls_mpi_uint;
> + #if !defined(MBEDTLS_NO_UDBL_DIVISION)
> + typedef uint64_t mbedtls_t_udbl;
> + #define MBEDTLS_HAVE_UDBL
> + #endif /* !MBEDTLS_NO_UDBL_DIVISION */
> +#endif /* !MBEDTLS_HAVE_INT64 */
> +
> +#ifdef __cplusplus
> +extern "C" {
> +#endif
> +
> +/**
> + * \brief MPI structure
> + */
> +typedef struct
> +{
> + int s; /*!< integer sign */
> + size_t n; /*!< total # of limbs */
> + mbedtls_mpi_uint *p; /*!< pointer to limbs */
> +}
> +mbedtls_mpi;
> +
> +/**
> + * \brief Initialize one MPI (make internal references valid)
> + * This just makes it ready to be set or freed,
> + * but does not define a value for the MPI.
> + *
> + * \param X One MPI to initialize.
> + */
> +void mbedtls_mpi_init( mbedtls_mpi *X );
> +
> +/**
> + * \brief Unallocate one MPI
> + *
> + * \param X One MPI to unallocate.
> + */
> +void mbedtls_mpi_free( mbedtls_mpi *X );
> +
> +/**
> + * \brief Enlarge to the specified number of limbs
> + *
> + * \param X MPI to grow
> + * \param nblimbs The target number of limbs
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
> + */
> +int mbedtls_mpi_grow( mbedtls_mpi *X, size_t nblimbs );
> +
> +/**
> + * \brief Resize down, keeping at least the specified number of limbs
> + *
> + * \param X MPI to shrink
> + * \param nblimbs The minimum number of limbs to keep
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
> + */
> +int mbedtls_mpi_shrink( mbedtls_mpi *X, size_t nblimbs );
> +
> +/**
> + * \brief Copy the contents of Y into X
> + *
> + * \param X Destination MPI
> + * \param Y Source MPI
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
> + */
> +int mbedtls_mpi_copy( mbedtls_mpi *X, const mbedtls_mpi *Y );
> +
> +/**
> + * \brief Swap the contents of X and Y
> + *
> + * \param X First MPI value
> + * \param Y Second MPI value
> + */
> +void mbedtls_mpi_swap( mbedtls_mpi *X, mbedtls_mpi *Y );
> +
> +/**
> + * \brief Safe conditional assignement X = Y if assign is 1
> + *
> + * \param X MPI to conditionally assign to
> + * \param Y Value to be assigned
> + * \param assign 1: perform the assignment, 0: keep X's original value
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
> + *
> + * \note This function is equivalent to
> + * if( assign ) mbedtls_mpi_copy( X, Y );
> + * except that it avoids leaking any information about whether
> + * the assignment was done or not (the above code may leak
> + * information through branch prediction and/or memory access
> + * patterns analysis).
> + */
> +int mbedtls_mpi_safe_cond_assign( mbedtls_mpi *X, const mbedtls_mpi *Y, unsigned char assign );
> +
> +/**
> + * \brief Safe conditional swap X <-> Y if swap is 1
> + *
> + * \param X First mbedtls_mpi value
> + * \param Y Second mbedtls_mpi value
> + * \param assign 1: perform the swap, 0: keep X and Y's original values
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
> + *
> + * \note This function is equivalent to
> + * if( assign ) mbedtls_mpi_swap( X, Y );
> + * except that it avoids leaking any information about whether
> + * the assignment was done or not (the above code may leak
> + * information through branch prediction and/or memory access
> + * patterns analysis).
> + */
> +int mbedtls_mpi_safe_cond_swap( mbedtls_mpi *X, mbedtls_mpi *Y, unsigned char assign );
> +
> +/**
> + * \brief Set value from integer
> + *
> + * \param X MPI to set
> + * \param z Value to use
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
> + */
> +int mbedtls_mpi_lset( mbedtls_mpi *X, mbedtls_mpi_sint z );
> +
> +/**
> + * \brief Get a specific bit from X
> + *
> + * \param X MPI to use
> + * \param pos Zero-based index of the bit in X
> + *
> + * \return Either a 0 or a 1
> + */
> +int mbedtls_mpi_get_bit( const mbedtls_mpi *X, size_t pos );
> +
> +/**
> + * \brief Set a bit of X to a specific value of 0 or 1
> + *
> + * \note Will grow X if necessary to set a bit to 1 in a not yet
> + * existing limb. Will not grow if bit should be set to 0
> + *
> + * \param X MPI to use
> + * \param pos Zero-based index of the bit in X
> + * \param val The value to set the bit to (0 or 1)
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
> + * MBEDTLS_ERR_MPI_BAD_INPUT_DATA if val is not 0 or 1
> + */
> +int mbedtls_mpi_set_bit( mbedtls_mpi *X, size_t pos, unsigned char val );
> +
> +/**
> + * \brief Return the number of zero-bits before the least significant
> + * '1' bit
> + *
> + * Note: Thus also the zero-based index of the least significant '1' bit
> + *
> + * \param X MPI to use
> + */
> +size_t mbedtls_mpi_lsb( const mbedtls_mpi *X );
> +
> +/**
> + * \brief Return the number of bits up to and including the most
> + * significant '1' bit'
> + *
> + * Note: Thus also the one-based index of the most significant '1' bit
> + *
> + * \param X MPI to use
> + */
> +size_t mbedtls_mpi_bitlen( const mbedtls_mpi *X );
> +
> +/**
> + * \brief Return the total size in bytes
> + *
> + * \param X MPI to use
> + */
> +size_t mbedtls_mpi_size( const mbedtls_mpi *X );
> +
> +/**
> + * \brief Import from an ASCII string
> + *
> + * \param X Destination MPI
> + * \param radix Input numeric base
> + * \param s Null-terminated string buffer
> + *
> + * \return 0 if successful, or a MBEDTLS_ERR_MPI_XXX error code
> + */
> +int mbedtls_mpi_read_string( mbedtls_mpi *X, int radix, const char *s );
> +
> +/**
> + * \brief Export into an ASCII string
> + *
> + * \param X Source MPI
> + * \param radix Output numeric base
> + * \param buf Buffer to write the string to
> + * \param buflen Length of buf
> + * \param olen Length of the string written, including final NUL byte
> + *
> + * \return 0 if successful, or a MBEDTLS_ERR_MPI_XXX error code.
> + * *olen is always updated to reflect the amount
> + * of data that has (or would have) been written.
> + *
> + * \note Call this function with buflen = 0 to obtain the
> + * minimum required buffer size in *olen.
> + */
> +int mbedtls_mpi_write_string( const mbedtls_mpi *X, int radix,
> + char *buf, size_t buflen, size_t *olen );
> +
> +#if defined(MBEDTLS_FS_IO)
> +/**
> + * \brief Read MPI from a line in an opened file
> + *
> + * \param X Destination MPI
> + * \param radix Input numeric base
> + * \param fin Input file handle
> + *
> + * \return 0 if successful, MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL if
> + * the file read buffer is too small or a
> + * MBEDTLS_ERR_MPI_XXX error code
> + *
> + * \note On success, this function advances the file stream
> + * to the end of the current line or to EOF.
> + *
> + * The function returns 0 on an empty line.
> + *
> + * Leading whitespaces are ignored, as is a
> + * '0x' prefix for radix 16.
> + *
> + */
> +int mbedtls_mpi_read_file( mbedtls_mpi *X, int radix, FILE *fin );
> +
> +/**
> + * \brief Write X into an opened file, or stdout if fout is NULL
> + *
> + * \param p Prefix, can be NULL
> + * \param X Source MPI
> + * \param radix Output numeric base
> + * \param fout Output file handle (can be NULL)
> + *
> + * \return 0 if successful, or a MBEDTLS_ERR_MPI_XXX error code
> + *
> + * \note Set fout == NULL to print X on the console.
> + */
> +int mbedtls_mpi_write_file( const char *p, const mbedtls_mpi *X, int radix, FILE *fout );
> +#endif /* MBEDTLS_FS_IO */
> +
> +/**
> + * \brief Import X from unsigned binary data, big endian
> + *
> + * \param X Destination MPI
> + * \param buf Input buffer
> + * \param buflen Input buffer size
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
> + */
> +int mbedtls_mpi_read_binary( mbedtls_mpi *X, const unsigned char *buf, size_t buflen );
> +
> +/**
> + * \brief Export X into unsigned binary data, big endian.
> + * Always fills the whole buffer, which will start with zeros
> + * if the number is smaller.
> + *
> + * \param X Source MPI
> + * \param buf Output buffer
> + * \param buflen Output buffer size
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL if buf isn't large enough
> + */
> +int mbedtls_mpi_write_binary( const mbedtls_mpi *X, unsigned char *buf, size_t buflen );
> +
> +/**
> + * \brief Left-shift: X <<= count
> + *
> + * \param X MPI to shift
> + * \param count Amount to shift
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
> + */
> +int mbedtls_mpi_shift_l( mbedtls_mpi *X, size_t count );
> +
> +/**
> + * \brief Right-shift: X >>= count
> + *
> + * \param X MPI to shift
> + * \param count Amount to shift
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
> + */
> +int mbedtls_mpi_shift_r( mbedtls_mpi *X, size_t count );
> +
> +/**
> + * \brief Compare unsigned values
> + *
> + * \param X Left-hand MPI
> + * \param Y Right-hand MPI
> + *
> + * \return 1 if |X| is greater than |Y|,
> + * -1 if |X| is lesser than |Y| or
> + * 0 if |X| is equal to |Y|
> + */
> +int mbedtls_mpi_cmp_abs( const mbedtls_mpi *X, const mbedtls_mpi *Y );
> +
> +/**
> + * \brief Compare signed values
> + *
> + * \param X Left-hand MPI
> + * \param Y Right-hand MPI
> + *
> + * \return 1 if X is greater than Y,
> + * -1 if X is lesser than Y or
> + * 0 if X is equal to Y
> + */
> +int mbedtls_mpi_cmp_mpi( const mbedtls_mpi *X, const mbedtls_mpi *Y );
> +
> +/**
> + * \brief Compare signed values
> + *
> + * \param X Left-hand MPI
> + * \param z The integer value to compare to
> + *
> + * \return 1 if X is greater than z,
> + * -1 if X is lesser than z or
> + * 0 if X is equal to z
> + */
> +int mbedtls_mpi_cmp_int( const mbedtls_mpi *X, mbedtls_mpi_sint z );
> +
> +/**
> + * \brief Unsigned addition: X = |A| + |B|
> + *
> + * \param X Destination MPI
> + * \param A Left-hand MPI
> + * \param B Right-hand MPI
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
> + */
> +int mbedtls_mpi_add_abs( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B );
> +
> +/**
> + * \brief Unsigned subtraction: X = |A| - |B|
> + *
> + * \param X Destination MPI
> + * \param A Left-hand MPI
> + * \param B Right-hand MPI
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_NEGATIVE_VALUE if B is greater than A
> + */
> +int mbedtls_mpi_sub_abs( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B );
> +
> +/**
> + * \brief Signed addition: X = A + B
> + *
> + * \param X Destination MPI
> + * \param A Left-hand MPI
> + * \param B Right-hand MPI
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
> + */
> +int mbedtls_mpi_add_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B );
> +
> +/**
> + * \brief Signed subtraction: X = A - B
> + *
> + * \param X Destination MPI
> + * \param A Left-hand MPI
> + * \param B Right-hand MPI
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
> + */
> +int mbedtls_mpi_sub_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B );
> +
> +/**
> + * \brief Signed addition: X = A + b
> + *
> + * \param X Destination MPI
> + * \param A Left-hand MPI
> + * \param b The integer value to add
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
> + */
> +int mbedtls_mpi_add_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_sint b );
> +
> +/**
> + * \brief Signed subtraction: X = A - b
> + *
> + * \param X Destination MPI
> + * \param A Left-hand MPI
> + * \param b The integer value to subtract
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
> + */
> +int mbedtls_mpi_sub_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_sint b );
> +
> +/**
> + * \brief Baseline multiplication: X = A * B
> + *
> + * \param X Destination MPI
> + * \param A Left-hand MPI
> + * \param B Right-hand MPI
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
> + */
> +int mbedtls_mpi_mul_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B );
> +
> +/**
> + * \brief Baseline multiplication: X = A * b
> + *
> + * \param X Destination MPI
> + * \param A Left-hand MPI
> + * \param b The unsigned integer value to multiply with
> + *
> + * \note b is unsigned
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
> + */
> +int mbedtls_mpi_mul_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_uint b );
> +
> +/**
> + * \brief Division by mbedtls_mpi: A = Q * B + R
> + *
> + * \param Q Destination MPI for the quotient
> + * \param R Destination MPI for the rest value
> + * \param A Left-hand MPI
> + * \param B Right-hand MPI
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
> + * MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if B == 0
> + *
> + * \note Either Q or R can be NULL.
> + */
> +int mbedtls_mpi_div_mpi( mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A, const mbedtls_mpi *B );
> +
> +/**
> + * \brief Division by int: A = Q * b + R
> + *
> + * \param Q Destination MPI for the quotient
> + * \param R Destination MPI for the rest value
> + * \param A Left-hand MPI
> + * \param b Integer to divide by
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
> + * MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if b == 0
> + *
> + * \note Either Q or R can be NULL.
> + */
> +int mbedtls_mpi_div_int( mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A, mbedtls_mpi_sint b );
> +
> +/**
> + * \brief Modulo: R = A mod B
> + *
> + * \param R Destination MPI for the rest value
> + * \param A Left-hand MPI
> + * \param B Right-hand MPI
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
> + * MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if B == 0,
> + * MBEDTLS_ERR_MPI_NEGATIVE_VALUE if B < 0
> + */
> +int mbedtls_mpi_mod_mpi( mbedtls_mpi *R, const mbedtls_mpi *A, const mbedtls_mpi *B );
> +
> +/**
> + * \brief Modulo: r = A mod b
> + *
> + * \param r Destination mbedtls_mpi_uint
> + * \param A Left-hand MPI
> + * \param b Integer to divide by
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
> + * MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if b == 0,
> + * MBEDTLS_ERR_MPI_NEGATIVE_VALUE if b < 0
> + */
> +int mbedtls_mpi_mod_int( mbedtls_mpi_uint *r, const mbedtls_mpi *A, mbedtls_mpi_sint b );
> +
> +/**
> + * \brief Sliding-window exponentiation: X = A^E mod N
> + *
> + * \param X Destination MPI
> + * \param A Left-hand MPI
> + * \param E Exponent MPI
> + * \param N Modular MPI
> + * \param _RR Speed-up MPI used for recalculations
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
> + * MBEDTLS_ERR_MPI_BAD_INPUT_DATA if N is negative or even or
> + * if E is negative
> + *
> + * \note _RR is used to avoid re-computing R*R mod N across
> + * multiple calls, which speeds up things a bit. It can
> + * be set to NULL if the extra performance is unneeded.
> + */
> +int mbedtls_mpi_exp_mod( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *E, const mbedtls_mpi *N, mbedtls_mpi *_RR );
> +
> +/**
> + * \brief Fill an MPI X with size bytes of random
> + *
> + * \param X Destination MPI
> + * \param size Size in bytes
> + * \param f_rng RNG function
> + * \param p_rng RNG parameter
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
> + */
> +int mbedtls_mpi_fill_random( mbedtls_mpi *X, size_t size,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng );
> +
> +/**
> + * \brief Greatest common divisor: G = gcd(A, B)
> + *
> + * \param G Destination MPI
> + * \param A Left-hand MPI
> + * \param B Right-hand MPI
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
> + */
> +int mbedtls_mpi_gcd( mbedtls_mpi *G, const mbedtls_mpi *A, const mbedtls_mpi *B );
> +
> +/**
> + * \brief Modular inverse: X = A^-1 mod N
> + *
> + * \param X Destination MPI
> + * \param A Left-hand MPI
> + * \param N Right-hand MPI
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
> + * MBEDTLS_ERR_MPI_BAD_INPUT_DATA if N is <= 1,
> + MBEDTLS_ERR_MPI_NOT_ACCEPTABLE if A has no inverse mod N.
> + */
> +int mbedtls_mpi_inv_mod( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *N );
> +
> +/**
> + * \brief Miller-Rabin primality test
> + *
> + * \param X MPI to check
> + * \param f_rng RNG function
> + * \param p_rng RNG parameter
> + *
> + * \return 0 if successful (probably prime),
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
> + * MBEDTLS_ERR_MPI_NOT_ACCEPTABLE if X is not prime
> + */
> +int mbedtls_mpi_is_prime( const mbedtls_mpi *X,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng );
> +
> +/**
> + * \brief Prime number generation
> + *
> + * \param X Destination MPI
> + * \param nbits Required size of X in bits
> + * ( 3 <= nbits <= MBEDTLS_MPI_MAX_BITS )
> + * \param dh_flag If 1, then (X-1)/2 will be prime too
> + * \param f_rng RNG function
> + * \param p_rng RNG parameter
> + *
> + * \return 0 if successful (probably prime),
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
> + * MBEDTLS_ERR_MPI_BAD_INPUT_DATA if nbits is < 3
> + */
> +int mbedtls_mpi_gen_prime( mbedtls_mpi *X, size_t nbits, int dh_flag,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng );
> +
> +/**
> + * \brief Checkup routine
> + *
> + * \return 0 if successful, or 1 if the test failed
> + */
> +int mbedtls_mpi_self_test( int verbose );
> +
> +#ifdef __cplusplus
> +}
> +#endif
> +
> +#endif /* bignum.h */
> diff --git a/backport/compat/verification/mbedtls/bn_mul.h b/backport/compat/verification/mbedtls/bn_mul.h
> new file mode 100644
> index 000000000000..5f59ec6430a2
> --- /dev/null
> +++ b/backport/compat/verification/mbedtls/bn_mul.h
> @@ -0,0 +1,887 @@
> +/**
> + * \file bn_mul.h
> + *
> + * \brief Multi-precision integer library
> + *
> + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
> + * SPDX-License-Identifier: GPL-2.0
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * This file is part of mbed TLS (https://tls.mbed.org)
> + */
> +/*
> + * Multiply source vector [s] with b, add result
> + * to destination vector [d] and set carry c.
> + *
> + * Currently supports:
> + *
> + * . IA-32 (386+) . AMD64 / EM64T
> + * . IA-32 (SSE2) . Motorola 68000
> + * . PowerPC, 32-bit . MicroBlaze
> + * . PowerPC, 64-bit . TriCore
> + * . SPARC v8 . ARM v3+
> + * . Alpha . MIPS32
> + * . C, longlong . C, generic
> + */
> +#ifndef MBEDTLS_BN_MUL_H
> +#define MBEDTLS_BN_MUL_H
> +
> +#include "bignum.h"
> +
> +#if defined(MBEDTLS_HAVE_ASM)
> +
> +#ifndef asm
> +#define asm __asm
> +#endif
> +
> +/* armcc5 --gnu defines __GNUC__ but doesn't support GNU's extended asm */
> +#if defined(__GNUC__) && \
> + ( !defined(__ARMCC_VERSION) || __ARMCC_VERSION >= 6000000 )
> +#if defined(__i386__)
> +
> +#define MULADDC_INIT \
> + asm( \
> + "movl %%ebx, %0 \n\t" \
> + "movl %5, %%esi \n\t" \
> + "movl %6, %%edi \n\t" \
> + "movl %7, %%ecx \n\t" \
> + "movl %8, %%ebx \n\t"
> +
> +#define MULADDC_CORE \
> + "lodsl \n\t" \
> + "mull %%ebx \n\t" \
> + "addl %%ecx, %%eax \n\t" \
> + "adcl $0, %%edx \n\t" \
> + "addl (%%edi), %%eax \n\t" \
> + "adcl $0, %%edx \n\t" \
> + "movl %%edx, %%ecx \n\t" \
> + "stosl \n\t"
> +
> +#if defined(MBEDTLS_HAVE_SSE2)
> +
> +#define MULADDC_HUIT \
> + "movd %%ecx, %%mm1 \n\t" \
> + "movd %%ebx, %%mm0 \n\t" \
> + "movd (%%edi), %%mm3 \n\t" \
> + "paddq %%mm3, %%mm1 \n\t" \
> + "movd (%%esi), %%mm2 \n\t" \
> + "pmuludq %%mm0, %%mm2 \n\t" \
> + "movd 4(%%esi), %%mm4 \n\t" \
> + "pmuludq %%mm0, %%mm4 \n\t" \
> + "movd 8(%%esi), %%mm6 \n\t" \
> + "pmuludq %%mm0, %%mm6 \n\t" \
> + "movd 12(%%esi), %%mm7 \n\t" \
> + "pmuludq %%mm0, %%mm7 \n\t" \
> + "paddq %%mm2, %%mm1 \n\t" \
> + "movd 4(%%edi), %%mm3 \n\t" \
> + "paddq %%mm4, %%mm3 \n\t" \
> + "movd 8(%%edi), %%mm5 \n\t" \
> + "paddq %%mm6, %%mm5 \n\t" \
> + "movd 12(%%edi), %%mm4 \n\t" \
> + "paddq %%mm4, %%mm7 \n\t" \
> + "movd %%mm1, (%%edi) \n\t" \
> + "movd 16(%%esi), %%mm2 \n\t" \
> + "pmuludq %%mm0, %%mm2 \n\t" \
> + "psrlq $32, %%mm1 \n\t" \
> + "movd 20(%%esi), %%mm4 \n\t" \
> + "pmuludq %%mm0, %%mm4 \n\t" \
> + "paddq %%mm3, %%mm1 \n\t" \
> + "movd 24(%%esi), %%mm6 \n\t" \
> + "pmuludq %%mm0, %%mm6 \n\t" \
> + "movd %%mm1, 4(%%edi) \n\t" \
> + "psrlq $32, %%mm1 \n\t" \
> + "movd 28(%%esi), %%mm3 \n\t" \
> + "pmuludq %%mm0, %%mm3 \n\t" \
> + "paddq %%mm5, %%mm1 \n\t" \
> + "movd 16(%%edi), %%mm5 \n\t" \
> + "paddq %%mm5, %%mm2 \n\t" \
> + "movd %%mm1, 8(%%edi) \n\t" \
> + "psrlq $32, %%mm1 \n\t" \
> + "paddq %%mm7, %%mm1 \n\t" \
> + "movd 20(%%edi), %%mm5 \n\t" \
> + "paddq %%mm5, %%mm4 \n\t" \
> + "movd %%mm1, 12(%%edi) \n\t" \
> + "psrlq $32, %%mm1 \n\t" \
> + "paddq %%mm2, %%mm1 \n\t" \
> + "movd 24(%%edi), %%mm5 \n\t" \
> + "paddq %%mm5, %%mm6 \n\t" \
> + "movd %%mm1, 16(%%edi) \n\t" \
> + "psrlq $32, %%mm1 \n\t" \
> + "paddq %%mm4, %%mm1 \n\t" \
> + "movd 28(%%edi), %%mm5 \n\t" \
> + "paddq %%mm5, %%mm3 \n\t" \
> + "movd %%mm1, 20(%%edi) \n\t" \
> + "psrlq $32, %%mm1 \n\t" \
> + "paddq %%mm6, %%mm1 \n\t" \
> + "movd %%mm1, 24(%%edi) \n\t" \
> + "psrlq $32, %%mm1 \n\t" \
> + "paddq %%mm3, %%mm1 \n\t" \
> + "movd %%mm1, 28(%%edi) \n\t" \
> + "addl $32, %%edi \n\t" \
> + "addl $32, %%esi \n\t" \
> + "psrlq $32, %%mm1 \n\t" \
> + "movd %%mm1, %%ecx \n\t"
> +
> +#define MULADDC_STOP \
> + "emms \n\t" \
> + "movl %4, %%ebx \n\t" \
> + "movl %%ecx, %1 \n\t" \
> + "movl %%edi, %2 \n\t" \
> + "movl %%esi, %3 \n\t" \
> + : "=m" (t), "=m" (c), "=m" (d), "=m" (s) \
> + : "m" (t), "m" (s), "m" (d), "m" (c), "m" (b) \
> + : "eax", "ecx", "edx", "esi", "edi" \
> + );
> +
> +#else
> +
> +#define MULADDC_STOP \
> + "movl %4, %%ebx \n\t" \
> + "movl %%ecx, %1 \n\t" \
> + "movl %%edi, %2 \n\t" \
> + "movl %%esi, %3 \n\t" \
> + : "=m" (t), "=m" (c), "=m" (d), "=m" (s) \
> + : "m" (t), "m" (s), "m" (d), "m" (c), "m" (b) \
> + : "eax", "ecx", "edx", "esi", "edi" \
> + );
> +#endif /* SSE2 */
> +#endif /* i386 */
> +
> +#if defined(__amd64__) || defined (__x86_64__)
> +
> +#define MULADDC_INIT \
> + asm( \
> + "xorq %%r8, %%r8 \n\t"
> +
> +#define MULADDC_CORE \
> + "movq (%%rsi), %%rax \n\t" \
> + "mulq %%rbx \n\t" \
> + "addq $8, %%rsi \n\t" \
> + "addq %%rcx, %%rax \n\t" \
> + "movq %%r8, %%rcx \n\t" \
> + "adcq $0, %%rdx \n\t" \
> + "nop \n\t" \
> + "addq %%rax, (%%rdi) \n\t" \
> + "adcq %%rdx, %%rcx \n\t" \
> + "addq $8, %%rdi \n\t"
> +
> +#define MULADDC_STOP \
> + : "+c" (c), "+D" (d), "+S" (s) \
> + : "b" (b) \
> + : "rax", "rdx", "r8" \
> + );
> +
> +#endif /* AMD64 */
> +
> +#if defined(__mc68020__) || defined(__mcpu32__)
> +
> +#define MULADDC_INIT \
> + asm( \
> + "movl %3, %%a2 \n\t" \
> + "movl %4, %%a3 \n\t" \
> + "movl %5, %%d3 \n\t" \
> + "movl %6, %%d2 \n\t" \
> + "moveq #0, %%d0 \n\t"
> +
> +#define MULADDC_CORE \
> + "movel %%a2@+, %%d1 \n\t" \
> + "mulul %%d2, %%d4:%%d1 \n\t" \
> + "addl %%d3, %%d1 \n\t" \
> + "addxl %%d0, %%d4 \n\t" \
> + "moveq #0, %%d3 \n\t" \
> + "addl %%d1, %%a3@+ \n\t" \
> + "addxl %%d4, %%d3 \n\t"
> +
> +#define MULADDC_STOP \
> + "movl %%d3, %0 \n\t" \
> + "movl %%a3, %1 \n\t" \
> + "movl %%a2, %2 \n\t" \
> + : "=m" (c), "=m" (d), "=m" (s) \
> + : "m" (s), "m" (d), "m" (c), "m" (b) \
> + : "d0", "d1", "d2", "d3", "d4", "a2", "a3" \
> + );
> +
> +#define MULADDC_HUIT \
> + "movel %%a2@+, %%d1 \n\t" \
> + "mulul %%d2, %%d4:%%d1 \n\t" \
> + "addxl %%d3, %%d1 \n\t" \
> + "addxl %%d0, %%d4 \n\t" \
> + "addl %%d1, %%a3@+ \n\t" \
> + "movel %%a2@+, %%d1 \n\t" \
> + "mulul %%d2, %%d3:%%d1 \n\t" \
> + "addxl %%d4, %%d1 \n\t" \
> + "addxl %%d0, %%d3 \n\t" \
> + "addl %%d1, %%a3@+ \n\t" \
> + "movel %%a2@+, %%d1 \n\t" \
> + "mulul %%d2, %%d4:%%d1 \n\t" \
> + "addxl %%d3, %%d1 \n\t" \
> + "addxl %%d0, %%d4 \n\t" \
> + "addl %%d1, %%a3@+ \n\t" \
> + "movel %%a2@+, %%d1 \n\t" \
> + "mulul %%d2, %%d3:%%d1 \n\t" \
> + "addxl %%d4, %%d1 \n\t" \
> + "addxl %%d0, %%d3 \n\t" \
> + "addl %%d1, %%a3@+ \n\t" \
> + "movel %%a2@+, %%d1 \n\t" \
> + "mulul %%d2, %%d4:%%d1 \n\t" \
> + "addxl %%d3, %%d1 \n\t" \
> + "addxl %%d0, %%d4 \n\t" \
> + "addl %%d1, %%a3@+ \n\t" \
> + "movel %%a2@+, %%d1 \n\t" \
> + "mulul %%d2, %%d3:%%d1 \n\t" \
> + "addxl %%d4, %%d1 \n\t" \
> + "addxl %%d0, %%d3 \n\t" \
> + "addl %%d1, %%a3@+ \n\t" \
> + "movel %%a2@+, %%d1 \n\t" \
> + "mulul %%d2, %%d4:%%d1 \n\t" \
> + "addxl %%d3, %%d1 \n\t" \
> + "addxl %%d0, %%d4 \n\t" \
> + "addl %%d1, %%a3@+ \n\t" \
> + "movel %%a2@+, %%d1 \n\t" \
> + "mulul %%d2, %%d3:%%d1 \n\t" \
> + "addxl %%d4, %%d1 \n\t" \
> + "addxl %%d0, %%d3 \n\t" \
> + "addl %%d1, %%a3@+ \n\t" \
> + "addxl %%d0, %%d3 \n\t"
> +
> +#endif /* MC68000 */
> +
> +#if defined(__powerpc64__) || defined(__ppc64__)
> +
> +#if defined(__MACH__) && defined(__APPLE__)
> +
> +#define MULADDC_INIT \
> + asm( \
> + "ld r3, %3 \n\t" \
> + "ld r4, %4 \n\t" \
> + "ld r5, %5 \n\t" \
> + "ld r6, %6 \n\t" \
> + "addi r3, r3, -8 \n\t" \
> + "addi r4, r4, -8 \n\t" \
> + "addic r5, r5, 0 \n\t"
> +
> +#define MULADDC_CORE \
> + "ldu r7, 8(r3) \n\t" \
> + "mulld r8, r7, r6 \n\t" \
> + "mulhdu r9, r7, r6 \n\t" \
> + "adde r8, r8, r5 \n\t" \
> + "ld r7, 8(r4) \n\t" \
> + "addze r5, r9 \n\t" \
> + "addc r8, r8, r7 \n\t" \
> + "stdu r8, 8(r4) \n\t"
> +
> +#define MULADDC_STOP \
> + "addze r5, r5 \n\t" \
> + "addi r4, r4, 8 \n\t" \
> + "addi r3, r3, 8 \n\t" \
> + "std r5, %0 \n\t" \
> + "std r4, %1 \n\t" \
> + "std r3, %2 \n\t" \
> + : "=m" (c), "=m" (d), "=m" (s) \
> + : "m" (s), "m" (d), "m" (c), "m" (b) \
> + : "r3", "r4", "r5", "r6", "r7", "r8", "r9" \
> + );
> +
> +
> +#else /* __MACH__ && __APPLE__ */
> +
> +#define MULADDC_INIT \
> + asm( \
> + "ld %%r3, %3 \n\t" \
> + "ld %%r4, %4 \n\t" \
> + "ld %%r5, %5 \n\t" \
> + "ld %%r6, %6 \n\t" \
> + "addi %%r3, %%r3, -8 \n\t" \
> + "addi %%r4, %%r4, -8 \n\t" \
> + "addic %%r5, %%r5, 0 \n\t"
> +
> +#define MULADDC_CORE \
> + "ldu %%r7, 8(%%r3) \n\t" \
> + "mulld %%r8, %%r7, %%r6 \n\t" \
> + "mulhdu %%r9, %%r7, %%r6 \n\t" \
> + "adde %%r8, %%r8, %%r5 \n\t" \
> + "ld %%r7, 8(%%r4) \n\t" \
> + "addze %%r5, %%r9 \n\t" \
> + "addc %%r8, %%r8, %%r7 \n\t" \
> + "stdu %%r8, 8(%%r4) \n\t"
> +
> +#define MULADDC_STOP \
> + "addze %%r5, %%r5 \n\t" \
> + "addi %%r4, %%r4, 8 \n\t" \
> + "addi %%r3, %%r3, 8 \n\t" \
> + "std %%r5, %0 \n\t" \
> + "std %%r4, %1 \n\t" \
> + "std %%r3, %2 \n\t" \
> + : "=m" (c), "=m" (d), "=m" (s) \
> + : "m" (s), "m" (d), "m" (c), "m" (b) \
> + : "r3", "r4", "r5", "r6", "r7", "r8", "r9" \
> + );
> +
> +#endif /* __MACH__ && __APPLE__ */
> +
> +#elif defined(__powerpc__) || defined(__ppc__) /* end PPC64/begin PPC32 */
> +
> +#if defined(__MACH__) && defined(__APPLE__)
> +
> +#define MULADDC_INIT \
> + asm( \
> + "lwz r3, %3 \n\t" \
> + "lwz r4, %4 \n\t" \
> + "lwz r5, %5 \n\t" \
> + "lwz r6, %6 \n\t" \
> + "addi r3, r3, -4 \n\t" \
> + "addi r4, r4, -4 \n\t" \
> + "addic r5, r5, 0 \n\t"
> +
> +#define MULADDC_CORE \
> + "lwzu r7, 4(r3) \n\t" \
> + "mullw r8, r7, r6 \n\t" \
> + "mulhwu r9, r7, r6 \n\t" \
> + "adde r8, r8, r5 \n\t" \
> + "lwz r7, 4(r4) \n\t" \
> + "addze r5, r9 \n\t" \
> + "addc r8, r8, r7 \n\t" \
> + "stwu r8, 4(r4) \n\t"
> +
> +#define MULADDC_STOP \
> + "addze r5, r5 \n\t" \
> + "addi r4, r4, 4 \n\t" \
> + "addi r3, r3, 4 \n\t" \
> + "stw r5, %0 \n\t" \
> + "stw r4, %1 \n\t" \
> + "stw r3, %2 \n\t" \
> + : "=m" (c), "=m" (d), "=m" (s) \
> + : "m" (s), "m" (d), "m" (c), "m" (b) \
> + : "r3", "r4", "r5", "r6", "r7", "r8", "r9" \
> + );
> +
> +#else /* __MACH__ && __APPLE__ */
> +
> +#define MULADDC_INIT \
> + asm( \
> + "lwz %%r3, %3 \n\t" \
> + "lwz %%r4, %4 \n\t" \
> + "lwz %%r5, %5 \n\t" \
> + "lwz %%r6, %6 \n\t" \
> + "addi %%r3, %%r3, -4 \n\t" \
> + "addi %%r4, %%r4, -4 \n\t" \
> + "addic %%r5, %%r5, 0 \n\t"
> +
> +#define MULADDC_CORE \
> + "lwzu %%r7, 4(%%r3) \n\t" \
> + "mullw %%r8, %%r7, %%r6 \n\t" \
> + "mulhwu %%r9, %%r7, %%r6 \n\t" \
> + "adde %%r8, %%r8, %%r5 \n\t" \
> + "lwz %%r7, 4(%%r4) \n\t" \
> + "addze %%r5, %%r9 \n\t" \
> + "addc %%r8, %%r8, %%r7 \n\t" \
> + "stwu %%r8, 4(%%r4) \n\t"
> +
> +#define MULADDC_STOP \
> + "addze %%r5, %%r5 \n\t" \
> + "addi %%r4, %%r4, 4 \n\t" \
> + "addi %%r3, %%r3, 4 \n\t" \
> + "stw %%r5, %0 \n\t" \
> + "stw %%r4, %1 \n\t" \
> + "stw %%r3, %2 \n\t" \
> + : "=m" (c), "=m" (d), "=m" (s) \
> + : "m" (s), "m" (d), "m" (c), "m" (b) \
> + : "r3", "r4", "r5", "r6", "r7", "r8", "r9" \
> + );
> +
> +#endif /* __MACH__ && __APPLE__ */
> +
> +#endif /* PPC32 */
> +
> +/*
> + * The Sparc(64) assembly is reported to be broken.
> + * Disable it for now, until we're able to fix it.
> + */
> +#if 0 && defined(__sparc__)
> +#if defined(__sparc64__)
> +
> +#define MULADDC_INIT \
> + asm( \
> + "ldx %3, %%o0 \n\t" \
> + "ldx %4, %%o1 \n\t" \
> + "ld %5, %%o2 \n\t" \
> + "ld %6, %%o3 \n\t"
> +
> +#define MULADDC_CORE \
> + "ld [%%o0], %%o4 \n\t" \
> + "inc 4, %%o0 \n\t" \
> + "ld [%%o1], %%o5 \n\t" \
> + "umul %%o3, %%o4, %%o4 \n\t" \
> + "addcc %%o4, %%o2, %%o4 \n\t" \
> + "rd %%y, %%g1 \n\t" \
> + "addx %%g1, 0, %%g1 \n\t" \
> + "addcc %%o4, %%o5, %%o4 \n\t" \
> + "st %%o4, [%%o1] \n\t" \
> + "addx %%g1, 0, %%o2 \n\t" \
> + "inc 4, %%o1 \n\t"
> +
> + #define MULADDC_STOP \
> + "st %%o2, %0 \n\t" \
> + "stx %%o1, %1 \n\t" \
> + "stx %%o0, %2 \n\t" \
> + : "=m" (c), "=m" (d), "=m" (s) \
> + : "m" (s), "m" (d), "m" (c), "m" (b) \
> + : "g1", "o0", "o1", "o2", "o3", "o4", \
> + "o5" \
> + );
> +
> +#else /* __sparc64__ */
> +
> +#define MULADDC_INIT \
> + asm( \
> + "ld %3, %%o0 \n\t" \
> + "ld %4, %%o1 \n\t" \
> + "ld %5, %%o2 \n\t" \
> + "ld %6, %%o3 \n\t"
> +
> +#define MULADDC_CORE \
> + "ld [%%o0], %%o4 \n\t" \
> + "inc 4, %%o0 \n\t" \
> + "ld [%%o1], %%o5 \n\t" \
> + "umul %%o3, %%o4, %%o4 \n\t" \
> + "addcc %%o4, %%o2, %%o4 \n\t" \
> + "rd %%y, %%g1 \n\t" \
> + "addx %%g1, 0, %%g1 \n\t" \
> + "addcc %%o4, %%o5, %%o4 \n\t" \
> + "st %%o4, [%%o1] \n\t" \
> + "addx %%g1, 0, %%o2 \n\t" \
> + "inc 4, %%o1 \n\t"
> +
> +#define MULADDC_STOP \
> + "st %%o2, %0 \n\t" \
> + "st %%o1, %1 \n\t" \
> + "st %%o0, %2 \n\t" \
> + : "=m" (c), "=m" (d), "=m" (s) \
> + : "m" (s), "m" (d), "m" (c), "m" (b) \
> + : "g1", "o0", "o1", "o2", "o3", "o4", \
> + "o5" \
> + );
> +
> +#endif /* __sparc64__ */
> +#endif /* __sparc__ */
> +
> +#if defined(__microblaze__) || defined(microblaze)
> +
> +#define MULADDC_INIT \
> + asm( \
> + "lwi r3, %3 \n\t" \
> + "lwi r4, %4 \n\t" \
> + "lwi r5, %5 \n\t" \
> + "lwi r6, %6 \n\t" \
> + "andi r7, r6, 0xffff \n\t" \
> + "bsrli r6, r6, 16 \n\t"
> +
> +#define MULADDC_CORE \
> + "lhui r8, r3, 0 \n\t" \
> + "addi r3, r3, 2 \n\t" \
> + "lhui r9, r3, 0 \n\t" \
> + "addi r3, r3, 2 \n\t" \
> + "mul r10, r9, r6 \n\t" \
> + "mul r11, r8, r7 \n\t" \
> + "mul r12, r9, r7 \n\t" \
> + "mul r13, r8, r6 \n\t" \
> + "bsrli r8, r10, 16 \n\t" \
> + "bsrli r9, r11, 16 \n\t" \
> + "add r13, r13, r8 \n\t" \
> + "add r13, r13, r9 \n\t" \
> + "bslli r10, r10, 16 \n\t" \
> + "bslli r11, r11, 16 \n\t" \
> + "add r12, r12, r10 \n\t" \
> + "addc r13, r13, r0 \n\t" \
> + "add r12, r12, r11 \n\t" \
> + "addc r13, r13, r0 \n\t" \
> + "lwi r10, r4, 0 \n\t" \
> + "add r12, r12, r10 \n\t" \
> + "addc r13, r13, r0 \n\t" \
> + "add r12, r12, r5 \n\t" \
> + "addc r5, r13, r0 \n\t" \
> + "swi r12, r4, 0 \n\t" \
> + "addi r4, r4, 4 \n\t"
> +
> +#define MULADDC_STOP \
> + "swi r5, %0 \n\t" \
> + "swi r4, %1 \n\t" \
> + "swi r3, %2 \n\t" \
> + : "=m" (c), "=m" (d), "=m" (s) \
> + : "m" (s), "m" (d), "m" (c), "m" (b) \
> + : "r3", "r4" "r5", "r6", "r7", "r8", \
> + "r9", "r10", "r11", "r12", "r13" \
> + );
> +
> +#endif /* MicroBlaze */
> +
> +#if defined(__tricore__)
> +
> +#define MULADDC_INIT \
> + asm( \
> + "ld.a %%a2, %3 \n\t" \
> + "ld.a %%a3, %4 \n\t" \
> + "ld.w %%d4, %5 \n\t" \
> + "ld.w %%d1, %6 \n\t" \
> + "xor %%d5, %%d5 \n\t"
> +
> +#define MULADDC_CORE \
> + "ld.w %%d0, [%%a2+] \n\t" \
> + "madd.u %%e2, %%e4, %%d0, %%d1 \n\t" \
> + "ld.w %%d0, [%%a3] \n\t" \
> + "addx %%d2, %%d2, %%d0 \n\t" \
> + "addc %%d3, %%d3, 0 \n\t" \
> + "mov %%d4, %%d3 \n\t" \
> + "st.w [%%a3+], %%d2 \n\t"
> +
> +#define MULADDC_STOP \
> + "st.w %0, %%d4 \n\t" \
> + "st.a %1, %%a3 \n\t" \
> + "st.a %2, %%a2 \n\t" \
> + : "=m" (c), "=m" (d), "=m" (s) \
> + : "m" (s), "m" (d), "m" (c), "m" (b) \
> + : "d0", "d1", "e2", "d4", "a2", "a3" \
> + );
> +
> +#endif /* TriCore */
> +
> +/*
> + * gcc -O0 by default uses r7 for the frame pointer, so it complains about our
> + * use of r7 below, unless -fomit-frame-pointer is passed. Unfortunately,
> + * passing that option is not easy when building with yotta.
> + *
> + * On the other hand, -fomit-frame-pointer is implied by any -Ox options with
> + * x !=0, which we can detect using __OPTIMIZE__ (which is also defined by
> + * clang and armcc5 under the same conditions).
> + *
> + * So, only use the optimized assembly below for optimized build, which avoids
> + * the build error and is pretty reasonable anyway.
> + */
> +#if defined(__GNUC__) && !defined(__OPTIMIZE__)
> +#define MULADDC_CANNOT_USE_R7
> +#endif
> +
> +#if defined(__arm__) && !defined(MULADDC_CANNOT_USE_R7)
> +
> +#if defined(__thumb__) && !defined(__thumb2__)
> +
> +#define MULADDC_INIT \
> + asm( \
> + "ldr r0, %3 \n\t" \
> + "ldr r1, %4 \n\t" \
> + "ldr r2, %5 \n\t" \
> + "ldr r3, %6 \n\t" \
> + "lsr r7, r3, #16 \n\t" \
> + "mov r9, r7 \n\t" \
> + "lsl r7, r3, #16 \n\t" \
> + "lsr r7, r7, #16 \n\t" \
> + "mov r8, r7 \n\t"
> +
> +#define MULADDC_CORE \
> + "ldmia r0!, {r6} \n\t" \
> + "lsr r7, r6, #16 \n\t" \
> + "lsl r6, r6, #16 \n\t" \
> + "lsr r6, r6, #16 \n\t" \
> + "mov r4, r8 \n\t" \
> + "mul r4, r6 \n\t" \
> + "mov r3, r9 \n\t" \
> + "mul r6, r3 \n\t" \
> + "mov r5, r9 \n\t" \
> + "mul r5, r7 \n\t" \
> + "mov r3, r8 \n\t" \
> + "mul r7, r3 \n\t" \
> + "lsr r3, r6, #16 \n\t" \
> + "add r5, r5, r3 \n\t" \
> + "lsr r3, r7, #16 \n\t" \
> + "add r5, r5, r3 \n\t" \
> + "add r4, r4, r2 \n\t" \
> + "mov r2, #0 \n\t" \
> + "adc r5, r2 \n\t" \
> + "lsl r3, r6, #16 \n\t" \
> + "add r4, r4, r3 \n\t" \
> + "adc r5, r2 \n\t" \
> + "lsl r3, r7, #16 \n\t" \
> + "add r4, r4, r3 \n\t" \
> + "adc r5, r2 \n\t" \
> + "ldr r3, [r1] \n\t" \
> + "add r4, r4, r3 \n\t" \
> + "adc r2, r5 \n\t" \
> + "stmia r1!, {r4} \n\t"
> +
> +#define MULADDC_STOP \
> + "str r2, %0 \n\t" \
> + "str r1, %1 \n\t" \
> + "str r0, %2 \n\t" \
> + : "=m" (c), "=m" (d), "=m" (s) \
> + : "m" (s), "m" (d), "m" (c), "m" (b) \
> + : "r0", "r1", "r2", "r3", "r4", "r5", \
> + "r6", "r7", "r8", "r9", "cc" \
> + );
> +
> +#else
> +
> +#define MULADDC_INIT \
> + asm( \
> + "ldr r0, %3 \n\t" \
> + "ldr r1, %4 \n\t" \
> + "ldr r2, %5 \n\t" \
> + "ldr r3, %6 \n\t"
> +
> +#define MULADDC_CORE \
> + "ldr r4, [r0], #4 \n\t" \
> + "mov r5, #0 \n\t" \
> + "ldr r6, [r1] \n\t" \
> + "umlal r2, r5, r3, r4 \n\t" \
> + "adds r7, r6, r2 \n\t" \
> + "adc r2, r5, #0 \n\t" \
> + "str r7, [r1], #4 \n\t"
> +
> +#define MULADDC_STOP \
> + "str r2, %0 \n\t" \
> + "str r1, %1 \n\t" \
> + "str r0, %2 \n\t" \
> + : "=m" (c), "=m" (d), "=m" (s) \
> + : "m" (s), "m" (d), "m" (c), "m" (b) \
> + : "r0", "r1", "r2", "r3", "r4", "r5", \
> + "r6", "r7", "cc" \
> + );
> +
> +#endif /* Thumb */
> +
> +#endif /* ARMv3 */
> +
> +#if defined(__alpha__)
> +
> +#define MULADDC_INIT \
> + asm( \
> + "ldq $1, %3 \n\t" \
> + "ldq $2, %4 \n\t" \
> + "ldq $3, %5 \n\t" \
> + "ldq $4, %6 \n\t"
> +
> +#define MULADDC_CORE \
> + "ldq $6, 0($1) \n\t" \
> + "addq $1, 8, $1 \n\t" \
> + "mulq $6, $4, $7 \n\t" \
> + "umulh $6, $4, $6 \n\t" \
> + "addq $7, $3, $7 \n\t" \
> + "cmpult $7, $3, $3 \n\t" \
> + "ldq $5, 0($2) \n\t" \
> + "addq $7, $5, $7 \n\t" \
> + "cmpult $7, $5, $5 \n\t" \
> + "stq $7, 0($2) \n\t" \
> + "addq $2, 8, $2 \n\t" \
> + "addq $6, $3, $3 \n\t" \
> + "addq $5, $3, $3 \n\t"
> +
> +#define MULADDC_STOP \
> + "stq $3, %0 \n\t" \
> + "stq $2, %1 \n\t" \
> + "stq $1, %2 \n\t" \
> + : "=m" (c), "=m" (d), "=m" (s) \
> + : "m" (s), "m" (d), "m" (c), "m" (b) \
> + : "$1", "$2", "$3", "$4", "$5", "$6", "$7" \
> + );
> +#endif /* Alpha */
> +
> +#if defined(__mips__) && !defined(__mips64)
> +
> +#define MULADDC_INIT \
> + asm( \
> + "lw $10, %3 \n\t" \
> + "lw $11, %4 \n\t" \
> + "lw $12, %5 \n\t" \
> + "lw $13, %6 \n\t"
> +
> +#define MULADDC_CORE \
> + "lw $14, 0($10) \n\t" \
> + "multu $13, $14 \n\t" \
> + "addi $10, $10, 4 \n\t" \
> + "mflo $14 \n\t" \
> + "mfhi $9 \n\t" \
> + "addu $14, $12, $14 \n\t" \
> + "lw $15, 0($11) \n\t" \
> + "sltu $12, $14, $12 \n\t" \
> + "addu $15, $14, $15 \n\t" \
> + "sltu $14, $15, $14 \n\t" \
> + "addu $12, $12, $9 \n\t" \
> + "sw $15, 0($11) \n\t" \
> + "addu $12, $12, $14 \n\t" \
> + "addi $11, $11, 4 \n\t"
> +
> +#define MULADDC_STOP \
> + "sw $12, %0 \n\t" \
> + "sw $11, %1 \n\t" \
> + "sw $10, %2 \n\t" \
> + : "=m" (c), "=m" (d), "=m" (s) \
> + : "m" (s), "m" (d), "m" (c), "m" (b) \
> + : "$9", "$10", "$11", "$12", "$13", "$14", "$15" \
> + );
> +
> +#endif /* MIPS */
> +#endif /* GNUC */
> +
> +#if (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
> +
> +#define MULADDC_INIT \
> + __asm mov esi, s \
> + __asm mov edi, d \
> + __asm mov ecx, c \
> + __asm mov ebx, b
> +
> +#define MULADDC_CORE \
> + __asm lodsd \
> + __asm mul ebx \
> + __asm add eax, ecx \
> + __asm adc edx, 0 \
> + __asm add eax, [edi] \
> + __asm adc edx, 0 \
> + __asm mov ecx, edx \
> + __asm stosd
> +
> +#if defined(MBEDTLS_HAVE_SSE2)
> +
> +#define EMIT __asm _emit
> +
> +#define MULADDC_HUIT \
> + EMIT 0x0F EMIT 0x6E EMIT 0xC9 \
> + EMIT 0x0F EMIT 0x6E EMIT 0xC3 \
> + EMIT 0x0F EMIT 0x6E EMIT 0x1F \
> + EMIT 0x0F EMIT 0xD4 EMIT 0xCB \
> + EMIT 0x0F EMIT 0x6E EMIT 0x16 \
> + EMIT 0x0F EMIT 0xF4 EMIT 0xD0 \
> + EMIT 0x0F EMIT 0x6E EMIT 0x66 EMIT 0x04 \
> + EMIT 0x0F EMIT 0xF4 EMIT 0xE0 \
> + EMIT 0x0F EMIT 0x6E EMIT 0x76 EMIT 0x08 \
> + EMIT 0x0F EMIT 0xF4 EMIT 0xF0 \
> + EMIT 0x0F EMIT 0x6E EMIT 0x7E EMIT 0x0C \
> + EMIT 0x0F EMIT 0xF4 EMIT 0xF8 \
> + EMIT 0x0F EMIT 0xD4 EMIT 0xCA \
> + EMIT 0x0F EMIT 0x6E EMIT 0x5F EMIT 0x04 \
> + EMIT 0x0F EMIT 0xD4 EMIT 0xDC \
> + EMIT 0x0F EMIT 0x6E EMIT 0x6F EMIT 0x08 \
> + EMIT 0x0F EMIT 0xD4 EMIT 0xEE \
> + EMIT 0x0F EMIT 0x6E EMIT 0x67 EMIT 0x0C \
> + EMIT 0x0F EMIT 0xD4 EMIT 0xFC \
> + EMIT 0x0F EMIT 0x7E EMIT 0x0F \
> + EMIT 0x0F EMIT 0x6E EMIT 0x56 EMIT 0x10 \
> + EMIT 0x0F EMIT 0xF4 EMIT 0xD0 \
> + EMIT 0x0F EMIT 0x73 EMIT 0xD1 EMIT 0x20 \
> + EMIT 0x0F EMIT 0x6E EMIT 0x66 EMIT 0x14 \
> + EMIT 0x0F EMIT 0xF4 EMIT 0xE0 \
> + EMIT 0x0F EMIT 0xD4 EMIT 0xCB \
> + EMIT 0x0F EMIT 0x6E EMIT 0x76 EMIT 0x18 \
> + EMIT 0x0F EMIT 0xF4 EMIT 0xF0 \
> + EMIT 0x0F EMIT 0x7E EMIT 0x4F EMIT 0x04 \
> + EMIT 0x0F EMIT 0x73 EMIT 0xD1 EMIT 0x20 \
> + EMIT 0x0F EMIT 0x6E EMIT 0x5E EMIT 0x1C \
> + EMIT 0x0F EMIT 0xF4 EMIT 0xD8 \
> + EMIT 0x0F EMIT 0xD4 EMIT 0xCD \
> + EMIT 0x0F EMIT 0x6E EMIT 0x6F EMIT 0x10 \
> + EMIT 0x0F EMIT 0xD4 EMIT 0xD5 \
> + EMIT 0x0F EMIT 0x7E EMIT 0x4F EMIT 0x08 \
> + EMIT 0x0F EMIT 0x73 EMIT 0xD1 EMIT 0x20 \
> + EMIT 0x0F EMIT 0xD4 EMIT 0xCF \
> + EMIT 0x0F EMIT 0x6E EMIT 0x6F EMIT 0x14 \
> + EMIT 0x0F EMIT 0xD4 EMIT 0xE5 \
> + EMIT 0x0F EMIT 0x7E EMIT 0x4F EMIT 0x0C \
> + EMIT 0x0F EMIT 0x73 EMIT 0xD1 EMIT 0x20 \
> + EMIT 0x0F EMIT 0xD4 EMIT 0xCA \
> + EMIT 0x0F EMIT 0x6E EMIT 0x6F EMIT 0x18 \
> + EMIT 0x0F EMIT 0xD4 EMIT 0xF5 \
> + EMIT 0x0F EMIT 0x7E EMIT 0x4F EMIT 0x10 \
> + EMIT 0x0F EMIT 0x73 EMIT 0xD1 EMIT 0x20 \
> + EMIT 0x0F EMIT 0xD4 EMIT 0xCC \
> + EMIT 0x0F EMIT 0x6E EMIT 0x6F EMIT 0x1C \
> + EMIT 0x0F EMIT 0xD4 EMIT 0xDD \
> + EMIT 0x0F EMIT 0x7E EMIT 0x4F EMIT 0x14 \
> + EMIT 0x0F EMIT 0x73 EMIT 0xD1 EMIT 0x20 \
> + EMIT 0x0F EMIT 0xD4 EMIT 0xCE \
> + EMIT 0x0F EMIT 0x7E EMIT 0x4F EMIT 0x18 \
> + EMIT 0x0F EMIT 0x73 EMIT 0xD1 EMIT 0x20 \
> + EMIT 0x0F EMIT 0xD4 EMIT 0xCB \
> + EMIT 0x0F EMIT 0x7E EMIT 0x4F EMIT 0x1C \
> + EMIT 0x83 EMIT 0xC7 EMIT 0x20 \
> + EMIT 0x83 EMIT 0xC6 EMIT 0x20 \
> + EMIT 0x0F EMIT 0x73 EMIT 0xD1 EMIT 0x20 \
> + EMIT 0x0F EMIT 0x7E EMIT 0xC9
> +
> +#define MULADDC_STOP \
> + EMIT 0x0F EMIT 0x77 \
> + __asm mov c, ecx \
> + __asm mov d, edi \
> + __asm mov s, esi \
> +
> +#else
> +
> +#define MULADDC_STOP \
> + __asm mov c, ecx \
> + __asm mov d, edi \
> + __asm mov s, esi \
> +
> +#endif /* SSE2 */
> +#endif /* MSVC */
> +
> +#endif /* MBEDTLS_HAVE_ASM */
> +
> +#if !defined(MULADDC_CORE)
> +#if defined(MBEDTLS_HAVE_UDBL)
> +
> +#define MULADDC_INIT \
> +{ \
> + mbedtls_t_udbl r; \
> + mbedtls_mpi_uint r0, r1;
> +
> +#define MULADDC_CORE \
> + r = *(s++) * (mbedtls_t_udbl) b; \
> + r0 = (mbedtls_mpi_uint) r; \
> + r1 = (mbedtls_mpi_uint)( r >> biL ); \
> + r0 += c; r1 += (r0 < c); \
> + r0 += *d; r1 += (r0 < *d); \
> + c = r1; *(d++) = r0;
> +
> +#define MULADDC_STOP \
> +}
> +
> +#else
> +#define MULADDC_INIT \
> +{ \
> + mbedtls_mpi_uint s0, s1, b0, b1; \
> + mbedtls_mpi_uint r0, r1, rx, ry; \
> + b0 = ( b << biH ) >> biH; \
> + b1 = ( b >> biH );
> +
> +#define MULADDC_CORE \
> + s0 = ( *s << biH ) >> biH; \
> + s1 = ( *s >> biH ); s++; \
> + rx = s0 * b1; r0 = s0 * b0; \
> + ry = s1 * b0; r1 = s1 * b1; \
> + r1 += ( rx >> biH ); \
> + r1 += ( ry >> biH ); \
> + rx <<= biH; ry <<= biH; \
> + r0 += rx; r1 += (r0 < rx); \
> + r0 += ry; r1 += (r0 < ry); \
> + r0 += c; r1 += (r0 < c); \
> + r0 += *d; r1 += (r0 < *d); \
> + c = r1; *(d++) = r0;
> +
> +#define MULADDC_STOP \
> +}
> +
> +#endif /* C (generic) */
> +#endif /* C (longlong) */
> +
> +#endif /* bn_mul.h */
> diff --git a/backport/compat/verification/mbedtls/config.h b/backport/compat/verification/mbedtls/config.h
> new file mode 100644
> index 000000000000..91d900de7169
> --- /dev/null
> +++ b/backport/compat/verification/mbedtls/config.h
> @@ -0,0 +1,15 @@
> +#ifndef __MBEDTLS_CONFIG_H
> +#define __MBEDTLS_CONFIG_H
> +#define MBEDTLS_RSA_C
> +#define MBEDTLS_PKCS1_V15
> +#define MBEDTLS_MD_C
> +#define __OpenBSD__
> +#define MBEDTLS_PLATFORM_C
> +#define MBEDTLS_BIGNUM_C
> +#define MBEDTLS_OID_C
> +#define MBEDTLS_ASN1_PARSE_C
> +#define MBEDTLS_NO_UDBL_DIVISION
> +#define MBEDTLS_SHA256_C
> +#include <linux/types.h>
> +#include "platform.h"
> +#endif /* __MBEDTLS_CONFIG_H */
> diff --git a/backport/compat/verification/mbedtls/md.h b/backport/compat/verification/mbedtls/md.h
> new file mode 100644
> index 000000000000..9385116c14e5
> --- /dev/null
> +++ b/backport/compat/verification/mbedtls/md.h
> @@ -0,0 +1,356 @@
> +/**
> + * \file md.h
> + *
> + * \brief Generic message digest wrapper
> + *
> + * \author Adriaan de Jong <dejong@fox-it.com>
> + *
> + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
> + * SPDX-License-Identifier: GPL-2.0
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * This file is part of mbed TLS (https://tls.mbed.org)
> + */
> +#ifndef MBEDTLS_MD_H
> +#define MBEDTLS_MD_H
> +
> +#include <stddef.h>
> +
> +#define MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE -0x5080 /**< The selected feature is not available. */
> +#define MBEDTLS_ERR_MD_BAD_INPUT_DATA -0x5100 /**< Bad input parameters to function. */
> +#define MBEDTLS_ERR_MD_ALLOC_FAILED -0x5180 /**< Failed to allocate memory. */
> +#define MBEDTLS_ERR_MD_FILE_IO_ERROR -0x5200 /**< Opening or reading of file failed. */
> +
> +#ifdef __cplusplus
> +extern "C" {
> +#endif
> +
> +typedef enum {
> + MBEDTLS_MD_NONE=0,
> + MBEDTLS_MD_MD2,
> + MBEDTLS_MD_MD4,
> + MBEDTLS_MD_MD5,
> + MBEDTLS_MD_SHA1,
> + MBEDTLS_MD_SHA224,
> + MBEDTLS_MD_SHA256,
> + MBEDTLS_MD_SHA384,
> + MBEDTLS_MD_SHA512,
> + MBEDTLS_MD_RIPEMD160,
> +} mbedtls_md_type_t;
> +
> +#if defined(MBEDTLS_SHA512_C)
> +#define MBEDTLS_MD_MAX_SIZE 64 /* longest known is SHA512 */
> +#else
> +#define MBEDTLS_MD_MAX_SIZE 32 /* longest known is SHA256 or less */
> +#endif
> +
> +/**
> + * Opaque struct defined in md_internal.h
> + */
> +typedef struct mbedtls_md_info_t mbedtls_md_info_t;
> +
> +/**
> + * Generic message digest context.
> + */
> +typedef struct {
> + /** Information about the associated message digest */
> + const mbedtls_md_info_t *md_info;
> +
> + /** Digest-specific context */
> + void *md_ctx;
> +
> + /** HMAC part of the context */
> + void *hmac_ctx;
> +} mbedtls_md_context_t;
> +
> +/**
> + * \brief Returns the list of digests supported by the generic digest module.
> + *
> + * \return a statically allocated array of digests, the last entry
> + * is 0.
> + */
> +const int *mbedtls_md_list( void );
> +
> +/**
> + * \brief Returns the message digest information associated with the
> + * given digest name.
> + *
> + * \param md_name Name of the digest to search for.
> + *
> + * \return The message digest information associated with md_name or
> + * NULL if not found.
> + */
> +const mbedtls_md_info_t *mbedtls_md_info_from_string( const char *md_name );
> +
> +/**
> + * \brief Returns the message digest information associated with the
> + * given digest type.
> + *
> + * \param md_type type of digest to search for.
> + *
> + * \return The message digest information associated with md_type or
> + * NULL if not found.
> + */
> +const mbedtls_md_info_t *mbedtls_md_info_from_type( mbedtls_md_type_t md_type );
> +
> +/**
> + * \brief Initialize a md_context (as NONE)
> + * This should always be called first.
> + * Prepares the context for mbedtls_md_setup() or mbedtls_md_free().
> + */
> +void mbedtls_md_init( mbedtls_md_context_t *ctx );
> +
> +/**
> + * \brief Free and clear the internal structures of ctx.
> + * Can be called at any time after mbedtls_md_init().
> + * Mandatory once mbedtls_md_setup() has been called.
> + */
> +void mbedtls_md_free( mbedtls_md_context_t *ctx );
> +
> +#if ! defined(MBEDTLS_DEPRECATED_REMOVED)
> +#if defined(MBEDTLS_DEPRECATED_WARNING)
> +#define MBEDTLS_DEPRECATED __attribute__((deprecated))
> +#else
> +#define MBEDTLS_DEPRECATED
> +#endif
> +/**
> + * \brief Select MD to use and allocate internal structures.
> + * Should be called after mbedtls_md_init() or mbedtls_md_free().
> + * Makes it necessary to call mbedtls_md_free() later.
> + *
> + * \deprecated Superseded by mbedtls_md_setup() in 2.0.0
> + *
> + * \param ctx Context to set up.
> + * \param md_info Message digest to use.
> + *
> + * \returns \c 0 on success,
> + * \c MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter failure,
> + * \c MBEDTLS_ERR_MD_ALLOC_FAILED memory allocation failure.
> + */
> +int mbedtls_md_init_ctx( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info ) MBEDTLS_DEPRECATED;
> +#undef MBEDTLS_DEPRECATED
> +#endif /* MBEDTLS_DEPRECATED_REMOVED */
> +
> +/**
> + * \brief Select MD to use and allocate internal structures.
> + * Should be called after mbedtls_md_init() or mbedtls_md_free().
> + * Makes it necessary to call mbedtls_md_free() later.
> + *
> + * \param ctx Context to set up.
> + * \param md_info Message digest to use.
> + * \param hmac 0 to save some memory if HMAC will not be used,
> + * non-zero is HMAC is going to be used with this context.
> + *
> + * \returns \c 0 on success,
> + * \c MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter failure,
> + * \c MBEDTLS_ERR_MD_ALLOC_FAILED memory allocation failure.
> + */
> +int mbedtls_md_setup( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info, int hmac );
> +
> +/**
> + * \brief Clone the state of an MD context
> + *
> + * \note The two contexts must have been setup to the same type
> + * (cloning from SHA-256 to SHA-512 make no sense).
> + *
> + * \warning Only clones the MD state, not the HMAC state! (for now)
> + *
> + * \param dst The destination context
> + * \param src The context to be cloned
> + *
> + * \return \c 0 on success,
> + * \c MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter failure.
> + */
> +int mbedtls_md_clone( mbedtls_md_context_t *dst,
> + const mbedtls_md_context_t *src );
> +
> +/**
> + * \brief Returns the size of the message digest output.
> + *
> + * \param md_info message digest info
> + *
> + * \return size of the message digest output in bytes.
> + */
> +unsigned char mbedtls_md_get_size( const mbedtls_md_info_t *md_info );
> +
> +/**
> + * \brief Returns the type of the message digest output.
> + *
> + * \param md_info message digest info
> + *
> + * \return type of the message digest output.
> + */
> +mbedtls_md_type_t mbedtls_md_get_type( const mbedtls_md_info_t *md_info );
> +
> +/**
> + * \brief Returns the name of the message digest output.
> + *
> + * \param md_info message digest info
> + *
> + * \return name of the message digest output.
> + */
> +const char *mbedtls_md_get_name( const mbedtls_md_info_t *md_info );
> +
> +/**
> + * \brief Prepare the context to digest a new message.
> + * Generally called after mbedtls_md_setup() or mbedtls_md_finish().
> + * Followed by mbedtls_md_update().
> + *
> + * \param ctx generic message digest context.
> + *
> + * \returns 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter
> + * verification fails.
> + */
> +int mbedtls_md_starts( mbedtls_md_context_t *ctx );
> +
> +/**
> + * \brief Generic message digest process buffer
> + * Called between mbedtls_md_starts() and mbedtls_md_finish().
> + * May be called repeatedly.
> + *
> + * \param ctx Generic message digest context
> + * \param input buffer holding the datal
> + * \param ilen length of the input data
> + *
> + * \returns 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter
> + * verification fails.
> + */
> +int mbedtls_md_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen );
> +
> +/**
> + * \brief Generic message digest final digest
> + * Called after mbedtls_md_update().
> + * Usually followed by mbedtls_md_free() or mbedtls_md_starts().
> + *
> + * \param ctx Generic message digest context
> + * \param output Generic message digest checksum result
> + *
> + * \returns 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter
> + * verification fails.
> + */
> +int mbedtls_md_finish( mbedtls_md_context_t *ctx, unsigned char *output );
> +
> +/**
> + * \brief Output = message_digest( input buffer )
> + *
> + * \param md_info message digest info
> + * \param input buffer holding the data
> + * \param ilen length of the input data
> + * \param output Generic message digest checksum result
> + *
> + * \returns 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter
> + * verification fails.
> + */
> +int mbedtls_md( const mbedtls_md_info_t *md_info, const unsigned char *input, size_t ilen,
> + unsigned char *output );
> +
> +#if defined(MBEDTLS_FS_IO)
> +/**
> + * \brief Output = message_digest( file contents )
> + *
> + * \param md_info message digest info
> + * \param path input file name
> + * \param output generic message digest checksum result
> + *
> + * \return 0 if successful,
> + * MBEDTLS_ERR_MD_FILE_IO_ERROR if file input failed,
> + * MBEDTLS_ERR_MD_BAD_INPUT_DATA if md_info was NULL.
> + */
> +int mbedtls_md_file( const mbedtls_md_info_t *md_info, const char *path,
> + unsigned char *output );
> +#endif /* MBEDTLS_FS_IO */
> +
> +/**
> + * \brief Set HMAC key and prepare to authenticate a new message.
> + * Usually called after mbedtls_md_setup() or mbedtls_md_hmac_finish().
> + *
> + * \param ctx HMAC context
> + * \param key HMAC secret key
> + * \param keylen length of the HMAC key in bytes
> + *
> + * \returns 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter
> + * verification fails.
> + */
> +int mbedtls_md_hmac_starts( mbedtls_md_context_t *ctx, const unsigned char *key,
> + size_t keylen );
> +
> +/**
> + * \brief Generic HMAC process buffer.
> + * Called between mbedtls_md_hmac_starts() or mbedtls_md_hmac_reset()
> + * and mbedtls_md_hmac_finish().
> + * May be called repeatedly.
> + *
> + * \param ctx HMAC context
> + * \param input buffer holding the data
> + * \param ilen length of the input data
> + *
> + * \returns 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter
> + * verification fails.
> + */
> +int mbedtls_md_hmac_update( mbedtls_md_context_t *ctx, const unsigned char *input,
> + size_t ilen );
> +
> +/**
> + * \brief Output HMAC.
> + * Called after mbedtls_md_hmac_update().
> + * Usually followed by mbedtls_md_hmac_reset(),
> + * mbedtls_md_hmac_starts(), or mbedtls_md_free().
> + *
> + * \param ctx HMAC context
> + * \param output Generic HMAC checksum result
> + *
> + * \returns 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter
> + * verification fails.
> + */
> +int mbedtls_md_hmac_finish( mbedtls_md_context_t *ctx, unsigned char *output);
> +
> +/**
> + * \brief Prepare to authenticate a new message with the same key.
> + * Called after mbedtls_md_hmac_finish() and before
> + * mbedtls_md_hmac_update().
> + *
> + * \param ctx HMAC context to be reset
> + *
> + * \returns 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter
> + * verification fails.
> + */
> +int mbedtls_md_hmac_reset( mbedtls_md_context_t *ctx );
> +
> +/**
> + * \brief Output = Generic_HMAC( hmac key, input buffer )
> + *
> + * \param md_info message digest info
> + * \param key HMAC secret key
> + * \param keylen length of the HMAC key in bytes
> + * \param input buffer holding the data
> + * \param ilen length of the input data
> + * \param output Generic HMAC-result
> + *
> + * \returns 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter
> + * verification fails.
> + */
> +int mbedtls_md_hmac( const mbedtls_md_info_t *md_info, const unsigned char *key, size_t keylen,
> + const unsigned char *input, size_t ilen,
> + unsigned char *output );
> +
> +/* Internal use */
> +int mbedtls_md_process( mbedtls_md_context_t *ctx, const unsigned char *data );
> +
> +#ifdef __cplusplus
> +}
> +#endif
> +
> +#endif /* MBEDTLS_MD_H */
> diff --git a/backport/compat/verification/mbedtls/md_internal.h b/backport/compat/verification/mbedtls/md_internal.h
> new file mode 100644
> index 000000000000..0a8600b407b0
> --- /dev/null
> +++ b/backport/compat/verification/mbedtls/md_internal.h
> @@ -0,0 +1,116 @@
> +/**
> + * \file md_internal.h
> + *
> + * \brief Message digest wrappers.
> + *
> + * \warning This in an internal header. Do not include directly.
> + *
> + * \author Adriaan de Jong <dejong@fox-it.com>
> + *
> + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
> + * SPDX-License-Identifier: GPL-2.0
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * This file is part of mbed TLS (https://tls.mbed.org)
> + */
> +#ifndef MBEDTLS_MD_WRAP_H
> +#define MBEDTLS_MD_WRAP_H
> +
> +#if !defined(MBEDTLS_CONFIG_FILE)
> +#include "config.h"
> +#else
> +#include MBEDTLS_CONFIG_FILE
> +#endif
> +
> +#include "md.h"
> +
> +#ifdef __cplusplus
> +extern "C" {
> +#endif
> +
> +/**
> + * Message digest information.
> + * Allows message digest functions to be called in a generic way.
> + */
> +struct mbedtls_md_info_t
> +{
> + /** Digest identifier */
> + mbedtls_md_type_t type;
> +
> + /** Name of the message digest */
> + const char * name;
> +
> + /** Output length of the digest function in bytes */
> + int size;
> +
> + /** Block length of the digest function in bytes */
> + int block_size;
> +
> + /** Digest initialisation function */
> + void (*starts_func)( void *ctx );
> +
> + /** Digest update function */
> + void (*update_func)( void *ctx, const unsigned char *input, size_t ilen );
> +
> + /** Digest finalisation function */
> + void (*finish_func)( void *ctx, unsigned char *output );
> +
> + /** Generic digest function */
> + void (*digest_func)( const unsigned char *input, size_t ilen,
> + unsigned char *output );
> +
> + /** Allocate a new context */
> + void * (*ctx_alloc_func)( void );
> +
> + /** Free the given context */
> + void (*ctx_free_func)( void *ctx );
> +
> + /** Clone state from a context */
> + void (*clone_func)( void *dst, const void *src );
> +
> + /** Internal use only */
> + void (*process_func)( void *ctx, const unsigned char *input );
> +};
> +
> +#if defined(MBEDTLS_MD2_C)
> +extern const mbedtls_md_info_t mbedtls_md2_info;
> +#endif
> +#if defined(MBEDTLS_MD4_C)
> +extern const mbedtls_md_info_t mbedtls_md4_info;
> +#endif
> +#if defined(MBEDTLS_MD5_C)
> +extern const mbedtls_md_info_t mbedtls_md5_info;
> +#endif
> +#if defined(MBEDTLS_RIPEMD160_C)
> +extern const mbedtls_md_info_t mbedtls_ripemd160_info;
> +#endif
> +#if defined(MBEDTLS_SHA1_C)
> +extern const mbedtls_md_info_t mbedtls_sha1_info;
> +#endif
> +#if defined(MBEDTLS_SHA256_C)
> +extern const mbedtls_md_info_t mbedtls_sha224_info;
> +extern const mbedtls_md_info_t mbedtls_sha256_info;
> +#endif
> +#if defined(MBEDTLS_SHA512_C)
> +extern const mbedtls_md_info_t mbedtls_sha384_info;
> +extern const mbedtls_md_info_t mbedtls_sha512_info;
> +#endif
> +
> +#ifdef __cplusplus
> +}
> +#endif
> +
> +#endif /* MBEDTLS_MD_WRAP_H */
> diff --git a/backport/compat/verification/mbedtls/oid.h b/backport/compat/verification/mbedtls/oid.h
> new file mode 100644
> index 000000000000..117ee47567bf
> --- /dev/null
> +++ b/backport/compat/verification/mbedtls/oid.h
> @@ -0,0 +1,572 @@
> +/**
> + * \file oid.h
> + *
> + * \brief Object Identifier (OID) database
> + *
> + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
> + * SPDX-License-Identifier: GPL-2.0
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * This file is part of mbed TLS (https://tls.mbed.org)
> + */
> +#ifndef MBEDTLS_OID_H
> +#define MBEDTLS_OID_H
> +
> +#if !defined(MBEDTLS_CONFIG_FILE)
> +#include "config.h"
> +#else
> +#include MBEDTLS_CONFIG_FILE
> +#endif
> +
> +#include "asn1.h"
> +#include "pk.h"
> +
> +#include <stddef.h>
> +
> +#if defined(MBEDTLS_CIPHER_C)
> +#include "cipher.h"
> +#endif
> +
> +#if defined(MBEDTLS_MD_C)
> +#include "md.h"
> +#endif
> +
> +#if defined(MBEDTLS_X509_USE_C) || defined(MBEDTLS_X509_CREATE_C)
> +#include "x509.h"
> +#endif
> +
> +#define MBEDTLS_ERR_OID_NOT_FOUND -0x002E /**< OID is not found. */
> +#define MBEDTLS_ERR_OID_BUF_TOO_SMALL -0x000B /**< output buffer is too small */
> +
> +/*
> + * Top level OID tuples
> + */
> +#define MBEDTLS_OID_ISO_MEMBER_BODIES "\x2a" /* {iso(1) member-body(2)} */
> +#define MBEDTLS_OID_ISO_IDENTIFIED_ORG "\x2b" /* {iso(1) identified-organization(3)} */
> +#define MBEDTLS_OID_ISO_CCITT_DS "\x55" /* {joint-iso-ccitt(2) ds(5)} */
> +#define MBEDTLS_OID_ISO_ITU_COUNTRY "\x60" /* {joint-iso-itu-t(2) country(16)} */
> +
> +/*
> + * ISO Member bodies OID parts
> + */
> +#define MBEDTLS_OID_COUNTRY_US "\x86\x48" /* {us(840)} */
> +#define MBEDTLS_OID_ORG_RSA_DATA_SECURITY "\x86\xf7\x0d" /* {rsadsi(113549)} */
> +#define MBEDTLS_OID_RSA_COMPANY MBEDTLS_OID_ISO_MEMBER_BODIES MBEDTLS_OID_COUNTRY_US \
> + MBEDTLS_OID_ORG_RSA_DATA_SECURITY /* {iso(1) member-body(2) us(840) rsadsi(113549)} */
> +#define MBEDTLS_OID_ORG_ANSI_X9_62 "\xce\x3d" /* ansi-X9-62(10045) */
> +#define MBEDTLS_OID_ANSI_X9_62 MBEDTLS_OID_ISO_MEMBER_BODIES MBEDTLS_OID_COUNTRY_US \
> + MBEDTLS_OID_ORG_ANSI_X9_62
> +
> +/*
> + * ISO Identified organization OID parts
> + */
> +#define MBEDTLS_OID_ORG_DOD "\x06" /* {dod(6)} */
> +#define MBEDTLS_OID_ORG_OIW "\x0e"
> +#define MBEDTLS_OID_OIW_SECSIG MBEDTLS_OID_ORG_OIW "\x03"
> +#define MBEDTLS_OID_OIW_SECSIG_ALG MBEDTLS_OID_OIW_SECSIG "\x02"
> +#define MBEDTLS_OID_OIW_SECSIG_SHA1 MBEDTLS_OID_OIW_SECSIG_ALG "\x1a"
> +#define MBEDTLS_OID_ORG_CERTICOM "\x81\x04" /* certicom(132) */
> +#define MBEDTLS_OID_CERTICOM MBEDTLS_OID_ISO_IDENTIFIED_ORG MBEDTLS_OID_ORG_CERTICOM
> +#define MBEDTLS_OID_ORG_TELETRUST "\x24" /* teletrust(36) */
> +#define MBEDTLS_OID_TELETRUST MBEDTLS_OID_ISO_IDENTIFIED_ORG MBEDTLS_OID_ORG_TELETRUST
> +
> +/*
> + * ISO ITU OID parts
> + */
> +#define MBEDTLS_OID_ORGANIZATION "\x01" /* {organization(1)} */
> +#define MBEDTLS_OID_ISO_ITU_US_ORG MBEDTLS_OID_ISO_ITU_COUNTRY MBEDTLS_OID_COUNTRY_US MBEDTLS_OID_ORGANIZATION /* {joint-iso-itu-t(2) country(16) us(840) organization(1)} */
> +
> +#define MBEDTLS_OID_ORG_GOV "\x65" /* {gov(101)} */
> +#define MBEDTLS_OID_GOV MBEDTLS_OID_ISO_ITU_US_ORG MBEDTLS_OID_ORG_GOV /* {joint-iso-itu-t(2) country(16) us(840) organization(1) gov(101)} */
> +
> +#define MBEDTLS_OID_ORG_NETSCAPE "\x86\xF8\x42" /* {netscape(113730)} */
> +#define MBEDTLS_OID_NETSCAPE MBEDTLS_OID_ISO_ITU_US_ORG MBEDTLS_OID_ORG_NETSCAPE /* Netscape OID {joint-iso-itu-t(2) country(16) us(840) organization(1) netscape(113730)} */
> +
> +/* ISO arc for standard certificate and CRL extensions */
> +#define MBEDTLS_OID_ID_CE MBEDTLS_OID_ISO_CCITT_DS "\x1D" /**< id-ce OBJECT IDENTIFIER ::= {joint-iso-ccitt(2) ds(5) 29} */
> +
> +/**
> + * Private Internet Extensions
> + * { iso(1) identified-organization(3) dod(6) internet(1)
> + * security(5) mechanisms(5) pkix(7) }
> + */
> +#define MBEDTLS_OID_PKIX MBEDTLS_OID_ISO_IDENTIFIED_ORG MBEDTLS_OID_ORG_DOD "\x01\x05\x05\x07"
> +
> +/*
> + * Arc for standard naming attributes
> + */
> +#define MBEDTLS_OID_AT MBEDTLS_OID_ISO_CCITT_DS "\x04" /**< id-at OBJECT IDENTIFIER ::= {joint-iso-ccitt(2) ds(5) 4} */
> +#define MBEDTLS_OID_AT_CN MBEDTLS_OID_AT "\x03" /**< id-at-commonName AttributeType:= {id-at 3} */
> +#define MBEDTLS_OID_AT_SUR_NAME MBEDTLS_OID_AT "\x04" /**< id-at-surName AttributeType:= {id-at 4} */
> +#define MBEDTLS_OID_AT_SERIAL_NUMBER MBEDTLS_OID_AT "\x05" /**< id-at-serialNumber AttributeType:= {id-at 5} */
> +#define MBEDTLS_OID_AT_COUNTRY MBEDTLS_OID_AT "\x06" /**< id-at-countryName AttributeType:= {id-at 6} */
> +#define MBEDTLS_OID_AT_LOCALITY MBEDTLS_OID_AT "\x07" /**< id-at-locality AttributeType:= {id-at 7} */
> +#define MBEDTLS_OID_AT_STATE MBEDTLS_OID_AT "\x08" /**< id-at-state AttributeType:= {id-at 8} */
> +#define MBEDTLS_OID_AT_ORGANIZATION MBEDTLS_OID_AT "\x0A" /**< id-at-organizationName AttributeType:= {id-at 10} */
> +#define MBEDTLS_OID_AT_ORG_UNIT MBEDTLS_OID_AT "\x0B" /**< id-at-organizationalUnitName AttributeType:= {id-at 11} */
> +#define MBEDTLS_OID_AT_TITLE MBEDTLS_OID_AT "\x0C" /**< id-at-title AttributeType:= {id-at 12} */
> +#define MBEDTLS_OID_AT_POSTAL_ADDRESS MBEDTLS_OID_AT "\x10" /**< id-at-postalAddress AttributeType:= {id-at 16} */
> +#define MBEDTLS_OID_AT_POSTAL_CODE MBEDTLS_OID_AT "\x11" /**< id-at-postalCode AttributeType:= {id-at 17} */
> +#define MBEDTLS_OID_AT_GIVEN_NAME MBEDTLS_OID_AT "\x2A" /**< id-at-givenName AttributeType:= {id-at 42} */
> +#define MBEDTLS_OID_AT_INITIALS MBEDTLS_OID_AT "\x2B" /**< id-at-initials AttributeType:= {id-at 43} */
> +#define MBEDTLS_OID_AT_GENERATION_QUALIFIER MBEDTLS_OID_AT "\x2C" /**< id-at-generationQualifier AttributeType:= {id-at 44} */
> +#define MBEDTLS_OID_AT_UNIQUE_IDENTIFIER MBEDTLS_OID_AT "\x2D" /**< id-at-uniqueIdentifier AttributType:= {id-at 45} */
> +#define MBEDTLS_OID_AT_DN_QUALIFIER MBEDTLS_OID_AT "\x2E" /**< id-at-dnQualifier AttributeType:= {id-at 46} */
> +#define MBEDTLS_OID_AT_PSEUDONYM MBEDTLS_OID_AT "\x41" /**< id-at-pseudonym AttributeType:= {id-at 65} */
> +
> +#define MBEDTLS_OID_DOMAIN_COMPONENT "\x09\x92\x26\x89\x93\xF2\x2C\x64\x01\x19" /** id-domainComponent AttributeType:= {itu-t(0) data(9) pss(2342) ucl(19200300) pilot(100) pilotAttributeType(1) domainComponent(25)} */
> +
> +/*
> + * OIDs for standard certificate extensions
> + */
> +#define MBEDTLS_OID_AUTHORITY_KEY_IDENTIFIER MBEDTLS_OID_ID_CE "\x23" /**< id-ce-authorityKeyIdentifier OBJECT IDENTIFIER ::= { id-ce 35 } */
> +#define MBEDTLS_OID_SUBJECT_KEY_IDENTIFIER MBEDTLS_OID_ID_CE "\x0E" /**< id-ce-subjectKeyIdentifier OBJECT IDENTIFIER ::= { id-ce 14 } */
> +#define MBEDTLS_OID_KEY_USAGE MBEDTLS_OID_ID_CE "\x0F" /**< id-ce-keyUsage OBJECT IDENTIFIER ::= { id-ce 15 } */
> +#define MBEDTLS_OID_CERTIFICATE_POLICIES MBEDTLS_OID_ID_CE "\x20" /**< id-ce-certificatePolicies OBJECT IDENTIFIER ::= { id-ce 32 } */
> +#define MBEDTLS_OID_POLICY_MAPPINGS MBEDTLS_OID_ID_CE "\x21" /**< id-ce-policyMappings OBJECT IDENTIFIER ::= { id-ce 33 } */
> +#define MBEDTLS_OID_SUBJECT_ALT_NAME MBEDTLS_OID_ID_CE "\x11" /**< id-ce-subjectAltName OBJECT IDENTIFIER ::= { id-ce 17 } */
> +#define MBEDTLS_OID_ISSUER_ALT_NAME MBEDTLS_OID_ID_CE "\x12" /**< id-ce-issuerAltName OBJECT IDENTIFIER ::= { id-ce 18 } */
> +#define MBEDTLS_OID_SUBJECT_DIRECTORY_ATTRS MBEDTLS_OID_ID_CE "\x09" /**< id-ce-subjectDirectoryAttributes OBJECT IDENTIFIER ::= { id-ce 9 } */
> +#define MBEDTLS_OID_BASIC_CONSTRAINTS MBEDTLS_OID_ID_CE "\x13" /**< id-ce-basicConstraints OBJECT IDENTIFIER ::= { id-ce 19 } */
> +#define MBEDTLS_OID_NAME_CONSTRAINTS MBEDTLS_OID_ID_CE "\x1E" /**< id-ce-nameConstraints OBJECT IDENTIFIER ::= { id-ce 30 } */
> +#define MBEDTLS_OID_POLICY_CONSTRAINTS MBEDTLS_OID_ID_CE "\x24" /**< id-ce-policyConstraints OBJECT IDENTIFIER ::= { id-ce 36 } */
> +#define MBEDTLS_OID_EXTENDED_KEY_USAGE MBEDTLS_OID_ID_CE "\x25" /**< id-ce-extKeyUsage OBJECT IDENTIFIER ::= { id-ce 37 } */
> +#define MBEDTLS_OID_CRL_DISTRIBUTION_POINTS MBEDTLS_OID_ID_CE "\x1F" /**< id-ce-cRLDistributionPoints OBJECT IDENTIFIER ::= { id-ce 31 } */
> +#define MBEDTLS_OID_INIHIBIT_ANYPOLICY MBEDTLS_OID_ID_CE "\x36" /**< id-ce-inhibitAnyPolicy OBJECT IDENTIFIER ::= { id-ce 54 } */
> +#define MBEDTLS_OID_FRESHEST_CRL MBEDTLS_OID_ID_CE "\x2E" /**< id-ce-freshestCRL OBJECT IDENTIFIER ::= { id-ce 46 } */
> +
> +/*
> + * Netscape certificate extensions
> + */
> +#define MBEDTLS_OID_NS_CERT MBEDTLS_OID_NETSCAPE "\x01"
> +#define MBEDTLS_OID_NS_CERT_TYPE MBEDTLS_OID_NS_CERT "\x01"
> +#define MBEDTLS_OID_NS_BASE_URL MBEDTLS_OID_NS_CERT "\x02"
> +#define MBEDTLS_OID_NS_REVOCATION_URL MBEDTLS_OID_NS_CERT "\x03"
> +#define MBEDTLS_OID_NS_CA_REVOCATION_URL MBEDTLS_OID_NS_CERT "\x04"
> +#define MBEDTLS_OID_NS_RENEWAL_URL MBEDTLS_OID_NS_CERT "\x07"
> +#define MBEDTLS_OID_NS_CA_POLICY_URL MBEDTLS_OID_NS_CERT "\x08"
> +#define MBEDTLS_OID_NS_SSL_SERVER_NAME MBEDTLS_OID_NS_CERT "\x0C"
> +#define MBEDTLS_OID_NS_COMMENT MBEDTLS_OID_NS_CERT "\x0D"
> +#define MBEDTLS_OID_NS_DATA_TYPE MBEDTLS_OID_NETSCAPE "\x02"
> +#define MBEDTLS_OID_NS_CERT_SEQUENCE MBEDTLS_OID_NS_DATA_TYPE "\x05"
> +
> +/*
> + * OIDs for CRL extensions
> + */
> +#define MBEDTLS_OID_PRIVATE_KEY_USAGE_PERIOD MBEDTLS_OID_ID_CE "\x10"
> +#define MBEDTLS_OID_CRL_NUMBER MBEDTLS_OID_ID_CE "\x14" /**< id-ce-cRLNumber OBJECT IDENTIFIER ::= { id-ce 20 } */
> +
> +/*
> + * X.509 v3 Extended key usage OIDs
> + */
> +#define MBEDTLS_OID_ANY_EXTENDED_KEY_USAGE MBEDTLS_OID_EXTENDED_KEY_USAGE "\x00" /**< anyExtendedKeyUsage OBJECT IDENTIFIER ::= { id-ce-extKeyUsage 0 } */
> +
> +#define MBEDTLS_OID_KP MBEDTLS_OID_PKIX "\x03" /**< id-kp OBJECT IDENTIFIER ::= { id-pkix 3 } */
> +#define MBEDTLS_OID_SERVER_AUTH MBEDTLS_OID_KP "\x01" /**< id-kp-serverAuth OBJECT IDENTIFIER ::= { id-kp 1 } */
> +#define MBEDTLS_OID_CLIENT_AUTH MBEDTLS_OID_KP "\x02" /**< id-kp-clientAuth OBJECT IDENTIFIER ::= { id-kp 2 } */
> +#define MBEDTLS_OID_CODE_SIGNING MBEDTLS_OID_KP "\x03" /**< id-kp-codeSigning OBJECT IDENTIFIER ::= { id-kp 3 } */
> +#define MBEDTLS_OID_EMAIL_PROTECTION MBEDTLS_OID_KP "\x04" /**< id-kp-emailProtection OBJECT IDENTIFIER ::= { id-kp 4 } */
> +#define MBEDTLS_OID_TIME_STAMPING MBEDTLS_OID_KP "\x08" /**< id-kp-timeStamping OBJECT IDENTIFIER ::= { id-kp 8 } */
> +#define MBEDTLS_OID_OCSP_SIGNING MBEDTLS_OID_KP "\x09" /**< id-kp-OCSPSigning OBJECT IDENTIFIER ::= { id-kp 9 } */
> +
> +/*
> + * PKCS definition OIDs
> + */
> +
> +#define MBEDTLS_OID_PKCS MBEDTLS_OID_RSA_COMPANY "\x01" /**< pkcs OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) 1 } */
> +#define MBEDTLS_OID_PKCS1 MBEDTLS_OID_PKCS "\x01" /**< pkcs-1 OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) 1 } */
> +#define MBEDTLS_OID_PKCS5 MBEDTLS_OID_PKCS "\x05" /**< pkcs-5 OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) 5 } */
> +#define MBEDTLS_OID_PKCS9 MBEDTLS_OID_PKCS "\x09" /**< pkcs-9 OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) 9 } */
> +#define MBEDTLS_OID_PKCS12 MBEDTLS_OID_PKCS "\x0c" /**< pkcs-12 OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) 12 } */
> +
> +/*
> + * PKCS#1 OIDs
> + */
> +#define MBEDTLS_OID_PKCS1_RSA MBEDTLS_OID_PKCS1 "\x01" /**< rsaEncryption OBJECT IDENTIFIER ::= { pkcs-1 1 } */
> +#define MBEDTLS_OID_PKCS1_MD2 MBEDTLS_OID_PKCS1 "\x02" /**< md2WithRSAEncryption ::= { pkcs-1 2 } */
> +#define MBEDTLS_OID_PKCS1_MD4 MBEDTLS_OID_PKCS1 "\x03" /**< md4WithRSAEncryption ::= { pkcs-1 3 } */
> +#define MBEDTLS_OID_PKCS1_MD5 MBEDTLS_OID_PKCS1 "\x04" /**< md5WithRSAEncryption ::= { pkcs-1 4 } */
> +#define MBEDTLS_OID_PKCS1_SHA1 MBEDTLS_OID_PKCS1 "\x05" /**< sha1WithRSAEncryption ::= { pkcs-1 5 } */
> +#define MBEDTLS_OID_PKCS1_SHA224 MBEDTLS_OID_PKCS1 "\x0e" /**< sha224WithRSAEncryption ::= { pkcs-1 14 } */
> +#define MBEDTLS_OID_PKCS1_SHA256 MBEDTLS_OID_PKCS1 "\x0b" /**< sha256WithRSAEncryption ::= { pkcs-1 11 } */
> +#define MBEDTLS_OID_PKCS1_SHA384 MBEDTLS_OID_PKCS1 "\x0c" /**< sha384WithRSAEncryption ::= { pkcs-1 12 } */
> +#define MBEDTLS_OID_PKCS1_SHA512 MBEDTLS_OID_PKCS1 "\x0d" /**< sha512WithRSAEncryption ::= { pkcs-1 13 } */
> +
> +#define MBEDTLS_OID_RSA_SHA_OBS "\x2B\x0E\x03\x02\x1D"
> +
> +#define MBEDTLS_OID_PKCS9_EMAIL MBEDTLS_OID_PKCS9 "\x01" /**< emailAddress AttributeType ::= { pkcs-9 1 } */
> +
> +/* RFC 4055 */
> +#define MBEDTLS_OID_RSASSA_PSS MBEDTLS_OID_PKCS1 "\x0a" /**< id-RSASSA-PSS ::= { pkcs-1 10 } */
> +#define MBEDTLS_OID_MGF1 MBEDTLS_OID_PKCS1 "\x08" /**< id-mgf1 ::= { pkcs-1 8 } */
> +
> +/*
> + * Digest algorithms
> + */
> +#define MBEDTLS_OID_DIGEST_ALG_MD2 MBEDTLS_OID_RSA_COMPANY "\x02\x02" /**< id-mbedtls_md2 OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) digestAlgorithm(2) 2 } */
> +#define MBEDTLS_OID_DIGEST_ALG_MD4 MBEDTLS_OID_RSA_COMPANY "\x02\x04" /**< id-mbedtls_md4 OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) digestAlgorithm(2) 4 } */
> +#define MBEDTLS_OID_DIGEST_ALG_MD5 MBEDTLS_OID_RSA_COMPANY "\x02\x05" /**< id-mbedtls_md5 OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) digestAlgorithm(2) 5 } */
> +#define MBEDTLS_OID_DIGEST_ALG_SHA1 MBEDTLS_OID_ISO_IDENTIFIED_ORG MBEDTLS_OID_OIW_SECSIG_SHA1 /**< id-mbedtls_sha1 OBJECT IDENTIFIER ::= { iso(1) identified-organization(3) oiw(14) secsig(3) algorithms(2) 26 } */
> +#define MBEDTLS_OID_DIGEST_ALG_SHA224 MBEDTLS_OID_GOV "\x03\x04\x02\x04" /**< id-sha224 OBJECT IDENTIFIER ::= { joint-iso-itu-t(2) country(16) us(840) organization(1) gov(101) csor(3) nistalgorithm(4) hashalgs(2) 4 } */
> +#define MBEDTLS_OID_DIGEST_ALG_SHA256 MBEDTLS_OID_GOV "\x03\x04\x02\x01" /**< id-mbedtls_sha256 OBJECT IDENTIFIER ::= { joint-iso-itu-t(2) country(16) us(840) organization(1) gov(101) csor(3) nistalgorithm(4) hashalgs(2) 1 } */
> +
> +#define MBEDTLS_OID_DIGEST_ALG_SHA384 MBEDTLS_OID_GOV "\x03\x04\x02\x02" /**< id-sha384 OBJECT IDENTIFIER ::= { joint-iso-itu-t(2) country(16) us(840) organization(1) gov(101) csor(3) nistalgorithm(4) hashalgs(2) 2 } */
> +
> +#define MBEDTLS_OID_DIGEST_ALG_SHA512 MBEDTLS_OID_GOV "\x03\x04\x02\x03" /**< id-mbedtls_sha512 OBJECT IDENTIFIER ::= { joint-iso-itu-t(2) country(16) us(840) organization(1) gov(101) csor(3) nistalgorithm(4) hashalgs(2) 3 } */
> +
> +#define MBEDTLS_OID_HMAC_SHA1 MBEDTLS_OID_RSA_COMPANY "\x02\x07" /**< id-hmacWithSHA1 OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) digestAlgorithm(2) 7 } */
> +
> +/*
> + * Encryption algorithms
> + */
> +#define MBEDTLS_OID_DES_CBC MBEDTLS_OID_ISO_IDENTIFIED_ORG MBEDTLS_OID_OIW_SECSIG_ALG "\x07" /**< desCBC OBJECT IDENTIFIER ::= { iso(1) identified-organization(3) oiw(14) secsig(3) algorithms(2) 7 } */
> +#define MBEDTLS_OID_DES_EDE3_CBC MBEDTLS_OID_RSA_COMPANY "\x03\x07" /**< des-ede3-cbc OBJECT IDENTIFIER ::= { iso(1) member-body(2) -- us(840) rsadsi(113549) encryptionAlgorithm(3) 7 } */
> +
> +/*
> + * PKCS#5 OIDs
> + */
> +#define MBEDTLS_OID_PKCS5_PBKDF2 MBEDTLS_OID_PKCS5 "\x0c" /**< id-PBKDF2 OBJECT IDENTIFIER ::= {pkcs-5 12} */
> +#define MBEDTLS_OID_PKCS5_PBES2 MBEDTLS_OID_PKCS5 "\x0d" /**< id-PBES2 OBJECT IDENTIFIER ::= {pkcs-5 13} */
> +#define MBEDTLS_OID_PKCS5_PBMAC1 MBEDTLS_OID_PKCS5 "\x0e" /**< id-PBMAC1 OBJECT IDENTIFIER ::= {pkcs-5 14} */
> +
> +/*
> + * PKCS#5 PBES1 algorithms
> + */
> +#define MBEDTLS_OID_PKCS5_PBE_MD2_DES_CBC MBEDTLS_OID_PKCS5 "\x01" /**< pbeWithMD2AndDES-CBC OBJECT IDENTIFIER ::= {pkcs-5 1} */
> +#define MBEDTLS_OID_PKCS5_PBE_MD2_RC2_CBC MBEDTLS_OID_PKCS5 "\x04" /**< pbeWithMD2AndRC2-CBC OBJECT IDENTIFIER ::= {pkcs-5 4} */
> +#define MBEDTLS_OID_PKCS5_PBE_MD5_DES_CBC MBEDTLS_OID_PKCS5 "\x03" /**< pbeWithMD5AndDES-CBC OBJECT IDENTIFIER ::= {pkcs-5 3} */
> +#define MBEDTLS_OID_PKCS5_PBE_MD5_RC2_CBC MBEDTLS_OID_PKCS5 "\x06" /**< pbeWithMD5AndRC2-CBC OBJECT IDENTIFIER ::= {pkcs-5 6} */
> +#define MBEDTLS_OID_PKCS5_PBE_SHA1_DES_CBC MBEDTLS_OID_PKCS5 "\x0a" /**< pbeWithSHA1AndDES-CBC OBJECT IDENTIFIER ::= {pkcs-5 10} */
> +#define MBEDTLS_OID_PKCS5_PBE_SHA1_RC2_CBC MBEDTLS_OID_PKCS5 "\x0b" /**< pbeWithSHA1AndRC2-CBC OBJECT IDENTIFIER ::= {pkcs-5 11} */
> +
> +/*
> + * PKCS#8 OIDs
> + */
> +#define MBEDTLS_OID_PKCS9_CSR_EXT_REQ MBEDTLS_OID_PKCS9 "\x0e" /**< extensionRequest OBJECT IDENTIFIER ::= {pkcs-9 14} */
> +
> +/*
> + * PKCS#12 PBE OIDs
> + */
> +#define MBEDTLS_OID_PKCS12_PBE MBEDTLS_OID_PKCS12 "\x01" /**< pkcs-12PbeIds OBJECT IDENTIFIER ::= {pkcs-12 1} */
> +
> +#define MBEDTLS_OID_PKCS12_PBE_SHA1_RC4_128 MBEDTLS_OID_PKCS12_PBE "\x01" /**< pbeWithSHAAnd128BitRC4 OBJECT IDENTIFIER ::= {pkcs-12PbeIds 1} */
> +#define MBEDTLS_OID_PKCS12_PBE_SHA1_RC4_40 MBEDTLS_OID_PKCS12_PBE "\x02" /**< pbeWithSHAAnd40BitRC4 OBJECT IDENTIFIER ::= {pkcs-12PbeIds 2} */
> +#define MBEDTLS_OID_PKCS12_PBE_SHA1_DES3_EDE_CBC MBEDTLS_OID_PKCS12_PBE "\x03" /**< pbeWithSHAAnd3-KeyTripleDES-CBC OBJECT IDENTIFIER ::= {pkcs-12PbeIds 3} */
> +#define MBEDTLS_OID_PKCS12_PBE_SHA1_DES2_EDE_CBC MBEDTLS_OID_PKCS12_PBE "\x04" /**< pbeWithSHAAnd2-KeyTripleDES-CBC OBJECT IDENTIFIER ::= {pkcs-12PbeIds 4} */
> +#define MBEDTLS_OID_PKCS12_PBE_SHA1_RC2_128_CBC MBEDTLS_OID_PKCS12_PBE "\x05" /**< pbeWithSHAAnd128BitRC2-CBC OBJECT IDENTIFIER ::= {pkcs-12PbeIds 5} */
> +#define MBEDTLS_OID_PKCS12_PBE_SHA1_RC2_40_CBC MBEDTLS_OID_PKCS12_PBE "\x06" /**< pbeWithSHAAnd40BitRC2-CBC OBJECT IDENTIFIER ::= {pkcs-12PbeIds 6} */
> +
> +/*
> + * EC key algorithms from RFC 5480
> + */
> +
> +/* id-ecPublicKey OBJECT IDENTIFIER ::= {
> + * iso(1) member-body(2) us(840) ansi-X9-62(10045) keyType(2) 1 } */
> +#define MBEDTLS_OID_EC_ALG_UNRESTRICTED MBEDTLS_OID_ANSI_X9_62 "\x02\01"
> +
> +/* id-ecDH OBJECT IDENTIFIER ::= {
> + * iso(1) identified-organization(3) certicom(132)
> + * schemes(1) ecdh(12) } */
> +#define MBEDTLS_OID_EC_ALG_ECDH MBEDTLS_OID_CERTICOM "\x01\x0c"
> +
> +/*
> + * ECParameters namedCurve identifiers, from RFC 5480, RFC 5639, and SEC2
> + */
> +
> +/* secp192r1 OBJECT IDENTIFIER ::= {
> + * iso(1) member-body(2) us(840) ansi-X9-62(10045) curves(3) prime(1) 1 } */
> +#define MBEDTLS_OID_EC_GRP_SECP192R1 MBEDTLS_OID_ANSI_X9_62 "\x03\x01\x01"
> +
> +/* secp224r1 OBJECT IDENTIFIER ::= {
> + * iso(1) identified-organization(3) certicom(132) curve(0) 33 } */
> +#define MBEDTLS_OID_EC_GRP_SECP224R1 MBEDTLS_OID_CERTICOM "\x00\x21"
> +
> +/* secp256r1 OBJECT IDENTIFIER ::= {
> + * iso(1) member-body(2) us(840) ansi-X9-62(10045) curves(3) prime(1) 7 } */
> +#define MBEDTLS_OID_EC_GRP_SECP256R1 MBEDTLS_OID_ANSI_X9_62 "\x03\x01\x07"
> +
> +/* secp384r1 OBJECT IDENTIFIER ::= {
> + * iso(1) identified-organization(3) certicom(132) curve(0) 34 } */
> +#define MBEDTLS_OID_EC_GRP_SECP384R1 MBEDTLS_OID_CERTICOM "\x00\x22"
> +
> +/* secp521r1 OBJECT IDENTIFIER ::= {
> + * iso(1) identified-organization(3) certicom(132) curve(0) 35 } */
> +#define MBEDTLS_OID_EC_GRP_SECP521R1 MBEDTLS_OID_CERTICOM "\x00\x23"
> +
> +/* secp192k1 OBJECT IDENTIFIER ::= {
> + * iso(1) identified-organization(3) certicom(132) curve(0) 31 } */
> +#define MBEDTLS_OID_EC_GRP_SECP192K1 MBEDTLS_OID_CERTICOM "\x00\x1f"
> +
> +/* secp224k1 OBJECT IDENTIFIER ::= {
> + * iso(1) identified-organization(3) certicom(132) curve(0) 32 } */
> +#define MBEDTLS_OID_EC_GRP_SECP224K1 MBEDTLS_OID_CERTICOM "\x00\x20"
> +
> +/* secp256k1 OBJECT IDENTIFIER ::= {
> + * iso(1) identified-organization(3) certicom(132) curve(0) 10 } */
> +#define MBEDTLS_OID_EC_GRP_SECP256K1 MBEDTLS_OID_CERTICOM "\x00\x0a"
> +
> +/* RFC 5639 4.1
> + * ecStdCurvesAndGeneration OBJECT IDENTIFIER::= {iso(1)
> + * identified-organization(3) teletrust(36) algorithm(3) signature-
> + * algorithm(3) ecSign(2) 8}
> + * ellipticCurve OBJECT IDENTIFIER ::= {ecStdCurvesAndGeneration 1}
> + * versionOne OBJECT IDENTIFIER ::= {ellipticCurve 1} */
> +#define MBEDTLS_OID_EC_BRAINPOOL_V1 MBEDTLS_OID_TELETRUST "\x03\x03\x02\x08\x01\x01"
> +
> +/* brainpoolP256r1 OBJECT IDENTIFIER ::= {versionOne 7} */
> +#define MBEDTLS_OID_EC_GRP_BP256R1 MBEDTLS_OID_EC_BRAINPOOL_V1 "\x07"
> +
> +/* brainpoolP384r1 OBJECT IDENTIFIER ::= {versionOne 11} */
> +#define MBEDTLS_OID_EC_GRP_BP384R1 MBEDTLS_OID_EC_BRAINPOOL_V1 "\x0B"
> +
> +/* brainpoolP512r1 OBJECT IDENTIFIER ::= {versionOne 13} */
> +#define MBEDTLS_OID_EC_GRP_BP512R1 MBEDTLS_OID_EC_BRAINPOOL_V1 "\x0D"
> +
> +/*
> + * SEC1 C.1
> + *
> + * prime-field OBJECT IDENTIFIER ::= { id-fieldType 1 }
> + * id-fieldType OBJECT IDENTIFIER ::= { ansi-X9-62 fieldType(1)}
> + */
> +#define MBEDTLS_OID_ANSI_X9_62_FIELD_TYPE MBEDTLS_OID_ANSI_X9_62 "\x01"
> +#define MBEDTLS_OID_ANSI_X9_62_PRIME_FIELD MBEDTLS_OID_ANSI_X9_62_FIELD_TYPE "\x01"
> +
> +/*
> + * ECDSA signature identifiers, from RFC 5480
> + */
> +#define MBEDTLS_OID_ANSI_X9_62_SIG MBEDTLS_OID_ANSI_X9_62 "\x04" /* signatures(4) */
> +#define MBEDTLS_OID_ANSI_X9_62_SIG_SHA2 MBEDTLS_OID_ANSI_X9_62_SIG "\x03" /* ecdsa-with-SHA2(3) */
> +
> +/* ecdsa-with-SHA1 OBJECT IDENTIFIER ::= {
> + * iso(1) member-body(2) us(840) ansi-X9-62(10045) signatures(4) 1 } */
> +#define MBEDTLS_OID_ECDSA_SHA1 MBEDTLS_OID_ANSI_X9_62_SIG "\x01"
> +
> +/* ecdsa-with-SHA224 OBJECT IDENTIFIER ::= {
> + * iso(1) member-body(2) us(840) ansi-X9-62(10045) signatures(4)
> + * ecdsa-with-SHA2(3) 1 } */
> +#define MBEDTLS_OID_ECDSA_SHA224 MBEDTLS_OID_ANSI_X9_62_SIG_SHA2 "\x01"
> +
> +/* ecdsa-with-SHA256 OBJECT IDENTIFIER ::= {
> + * iso(1) member-body(2) us(840) ansi-X9-62(10045) signatures(4)
> + * ecdsa-with-SHA2(3) 2 } */
> +#define MBEDTLS_OID_ECDSA_SHA256 MBEDTLS_OID_ANSI_X9_62_SIG_SHA2 "\x02"
> +
> +/* ecdsa-with-SHA384 OBJECT IDENTIFIER ::= {
> + * iso(1) member-body(2) us(840) ansi-X9-62(10045) signatures(4)
> + * ecdsa-with-SHA2(3) 3 } */
> +#define MBEDTLS_OID_ECDSA_SHA384 MBEDTLS_OID_ANSI_X9_62_SIG_SHA2 "\x03"
> +
> +/* ecdsa-with-SHA512 OBJECT IDENTIFIER ::= {
> + * iso(1) member-body(2) us(840) ansi-X9-62(10045) signatures(4)
> + * ecdsa-with-SHA2(3) 4 } */
> +#define MBEDTLS_OID_ECDSA_SHA512 MBEDTLS_OID_ANSI_X9_62_SIG_SHA2 "\x04"
> +
> +#ifdef __cplusplus
> +extern "C" {
> +#endif
> +
> +/**
> + * \brief Base OID descriptor structure
> + */
> +typedef struct {
> + const char *asn1; /*!< OID ASN.1 representation */
> + size_t asn1_len; /*!< length of asn1 */
> + const char *name; /*!< official name (e.g. from RFC) */
> + const char *description; /*!< human friendly description */
> +} mbedtls_oid_descriptor_t;
> +
> +/**
> + * \brief Translate an ASN.1 OID into its numeric representation
> + * (e.g. "\x2A\x86\x48\x86\xF7\x0D" into "1.2.840.113549")
> + *
> + * \param buf buffer to put representation in
> + * \param size size of the buffer
> + * \param oid OID to translate
> + *
> + * \return Length of the string written (excluding final NULL) or
> + * MBEDTLS_ERR_OID_BUF_TOO_SMALL in case of error
> + */
> +int mbedtls_oid_get_numeric_string( char *buf, size_t size, const mbedtls_asn1_buf *oid );
> +
> +#if defined(MBEDTLS_X509_USE_C) || defined(MBEDTLS_X509_CREATE_C)
> +/**
> + * \brief Translate an X.509 extension OID into local values
> + *
> + * \param oid OID to use
> + * \param ext_type place to store the extension type
> + *
> + * \return 0 if successful, or MBEDTLS_ERR_OID_NOT_FOUND
> + */
> +int mbedtls_oid_get_x509_ext_type( const mbedtls_asn1_buf *oid, int *ext_type );
> +#endif
> +
> +/**
> + * \brief Translate an X.509 attribute type OID into the short name
> + * (e.g. the OID for an X520 Common Name into "CN")
> + *
> + * \param oid OID to use
> + * \param short_name place to store the string pointer
> + *
> + * \return 0 if successful, or MBEDTLS_ERR_OID_NOT_FOUND
> + */
> +int mbedtls_oid_get_attr_short_name( const mbedtls_asn1_buf *oid, const char **short_name );
> +
> +/**
> + * \brief Translate PublicKeyAlgorithm OID into pk_type
> + *
> + * \param oid OID to use
> + * \param pk_alg place to store public key algorithm
> + *
> + * \return 0 if successful, or MBEDTLS_ERR_OID_NOT_FOUND
> + */
> +int mbedtls_oid_get_pk_alg( const mbedtls_asn1_buf *oid, mbedtls_pk_type_t *pk_alg );
> +
> +/**
> + * \brief Translate pk_type into PublicKeyAlgorithm OID
> + *
> + * \param pk_alg Public key type to look for
> + * \param oid place to store ASN.1 OID string pointer
> + * \param olen length of the OID
> + *
> + * \return 0 if successful, or MBEDTLS_ERR_OID_NOT_FOUND
> + */
> +int mbedtls_oid_get_oid_by_pk_alg( mbedtls_pk_type_t pk_alg,
> + const char **oid, size_t *olen );
> +
> +#if defined(MBEDTLS_ECP_C)
> +/**
> + * \brief Translate NamedCurve OID into an EC group identifier
> + *
> + * \param oid OID to use
> + * \param grp_id place to store group id
> + *
> + * \return 0 if successful, or MBEDTLS_ERR_OID_NOT_FOUND
> + */
> +int mbedtls_oid_get_ec_grp( const mbedtls_asn1_buf *oid, mbedtls_ecp_group_id *grp_id );
> +
> +/**
> + * \brief Translate EC group identifier into NamedCurve OID
> + *
> + * \param grp_id EC group identifier
> + * \param oid place to store ASN.1 OID string pointer
> + * \param olen length of the OID
> + *
> + * \return 0 if successful, or MBEDTLS_ERR_OID_NOT_FOUND
> + */
> +int mbedtls_oid_get_oid_by_ec_grp( mbedtls_ecp_group_id grp_id,
> + const char **oid, size_t *olen );
> +#endif /* MBEDTLS_ECP_C */
> +
> +#if defined(MBEDTLS_MD_C)
> +/**
> + * \brief Translate SignatureAlgorithm OID into md_type and pk_type
> + *
> + * \param oid OID to use
> + * \param md_alg place to store message digest algorithm
> + * \param pk_alg place to store public key algorithm
> + *
> + * \return 0 if successful, or MBEDTLS_ERR_OID_NOT_FOUND
> + */
> +int mbedtls_oid_get_sig_alg( const mbedtls_asn1_buf *oid,
> + mbedtls_md_type_t *md_alg, mbedtls_pk_type_t *pk_alg );
> +
> +/**
> + * \brief Translate SignatureAlgorithm OID into description
> + *
> + * \param oid OID to use
> + * \param desc place to store string pointer
> + *
> + * \return 0 if successful, or MBEDTLS_ERR_OID_NOT_FOUND
> + */
> +int mbedtls_oid_get_sig_alg_desc( const mbedtls_asn1_buf *oid, const char **desc );
> +
> +/**
> + * \brief Translate md_type and pk_type into SignatureAlgorithm OID
> + *
> + * \param md_alg message digest algorithm
> + * \param pk_alg public key algorithm
> + * \param oid place to store ASN.1 OID string pointer
> + * \param olen length of the OID
> + *
> + * \return 0 if successful, or MBEDTLS_ERR_OID_NOT_FOUND
> + */
> +int mbedtls_oid_get_oid_by_sig_alg( mbedtls_pk_type_t pk_alg, mbedtls_md_type_t md_alg,
> + const char **oid, size_t *olen );
> +
> +/**
> + * \brief Translate hash algorithm OID into md_type
> + *
> + * \param oid OID to use
> + * \param md_alg place to store message digest algorithm
> + *
> + * \return 0 if successful, or MBEDTLS_ERR_OID_NOT_FOUND
> + */
> +int mbedtls_oid_get_md_alg( const mbedtls_asn1_buf *oid, mbedtls_md_type_t *md_alg );
> +#endif /* MBEDTLS_MD_C */
> +
> +/**
> + * \brief Translate Extended Key Usage OID into description
> + *
> + * \param oid OID to use
> + * \param desc place to store string pointer
> + *
> + * \return 0 if successful, or MBEDTLS_ERR_OID_NOT_FOUND
> + */
> +int mbedtls_oid_get_extended_key_usage( const mbedtls_asn1_buf *oid, const char **desc );
> +
> +/**
> + * \brief Translate md_type into hash algorithm OID
> + *
> + * \param md_alg message digest algorithm
> + * \param oid place to store ASN.1 OID string pointer
> + * \param olen length of the OID
> + *
> + * \return 0 if successful, or MBEDTLS_ERR_OID_NOT_FOUND
> + */
> +int mbedtls_oid_get_oid_by_md( mbedtls_md_type_t md_alg, const char **oid, size_t *olen );
> +
> +#if defined(MBEDTLS_CIPHER_C)
> +/**
> + * \brief Translate encryption algorithm OID into cipher_type
> + *
> + * \param oid OID to use
> + * \param cipher_alg place to store cipher algorithm
> + *
> + * \return 0 if successful, or MBEDTLS_ERR_OID_NOT_FOUND
> + */
> +int mbedtls_oid_get_cipher_alg( const mbedtls_asn1_buf *oid, mbedtls_cipher_type_t *cipher_alg );
> +#endif /* MBEDTLS_CIPHER_C */
> +
> +#if defined(MBEDTLS_PKCS12_C)
> +/**
> + * \brief Translate PKCS#12 PBE algorithm OID into md_type and
> + * cipher_type
> + *
> + * \param oid OID to use
> + * \param md_alg place to store message digest algorithm
> + * \param cipher_alg place to store cipher algorithm
> + *
> + * \return 0 if successful, or MBEDTLS_ERR_OID_NOT_FOUND
> + */
> +int mbedtls_oid_get_pkcs12_pbe_alg( const mbedtls_asn1_buf *oid, mbedtls_md_type_t *md_alg,
> + mbedtls_cipher_type_t *cipher_alg );
> +#endif /* MBEDTLS_PKCS12_C */
> +
> +#ifdef __cplusplus
> +}
> +#endif
> +
> +#endif /* oid.h */
> diff --git a/backport/compat/verification/mbedtls/pk.h b/backport/compat/verification/mbedtls/pk.h
> new file mode 100644
> index 000000000000..9aac7e2a994a
> --- /dev/null
> +++ b/backport/compat/verification/mbedtls/pk.h
> @@ -0,0 +1,618 @@
> +/**
> + * \file pk.h
> + *
> + * \brief Public Key abstraction layer
> + *
> + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
> + * SPDX-License-Identifier: GPL-2.0
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * This file is part of mbed TLS (https://tls.mbed.org)
> + */
> +
> +#ifndef MBEDTLS_PK_H
> +#define MBEDTLS_PK_H
> +
> +#if !defined(MBEDTLS_CONFIG_FILE)
> +#include "config.h"
> +#else
> +#include MBEDTLS_CONFIG_FILE
> +#endif
> +
> +#include "md.h"
> +
> +#if defined(MBEDTLS_RSA_C)
> +#include "rsa.h"
> +#endif
> +
> +#if defined(MBEDTLS_ECP_C)
> +#include "ecp.h"
> +#endif
> +
> +#if defined(MBEDTLS_ECDSA_C)
> +#include "ecdsa.h"
> +#endif
> +
> +#if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \
> + !defined(inline) && !defined(__cplusplus)
> +#define inline __inline
> +#endif
> +
> +#define MBEDTLS_ERR_PK_ALLOC_FAILED -0x3F80 /**< Memory allocation failed. */
> +#define MBEDTLS_ERR_PK_TYPE_MISMATCH -0x3F00 /**< Type mismatch, eg attempt to encrypt with an ECDSA key */
> +#define MBEDTLS_ERR_PK_BAD_INPUT_DATA -0x3E80 /**< Bad input parameters to function. */
> +#define MBEDTLS_ERR_PK_FILE_IO_ERROR -0x3E00 /**< Read/write of file failed. */
> +#define MBEDTLS_ERR_PK_KEY_INVALID_VERSION -0x3D80 /**< Unsupported key version */
> +#define MBEDTLS_ERR_PK_KEY_INVALID_FORMAT -0x3D00 /**< Invalid key tag or value. */
> +#define MBEDTLS_ERR_PK_UNKNOWN_PK_ALG -0x3C80 /**< Key algorithm is unsupported (only RSA and EC are supported). */
> +#define MBEDTLS_ERR_PK_PASSWORD_REQUIRED -0x3C00 /**< Private key password can't be empty. */
> +#define MBEDTLS_ERR_PK_PASSWORD_MISMATCH -0x3B80 /**< Given private key password does not allow for correct decryption. */
> +#define MBEDTLS_ERR_PK_INVALID_PUBKEY -0x3B00 /**< The pubkey tag or value is invalid (only RSA and EC are supported). */
> +#define MBEDTLS_ERR_PK_INVALID_ALG -0x3A80 /**< The algorithm tag or value is invalid. */
> +#define MBEDTLS_ERR_PK_UNKNOWN_NAMED_CURVE -0x3A00 /**< Elliptic curve is unsupported (only NIST curves are supported). */
> +#define MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE -0x3980 /**< Unavailable feature, e.g. RSA disabled for RSA key. */
> +#define MBEDTLS_ERR_PK_SIG_LEN_MISMATCH -0x3900 /**< The signature is valid but its length is less than expected. */
> +
> +#ifdef __cplusplus
> +extern "C" {
> +#endif
> +
> +/**
> + * \brief Public key types
> + */
> +typedef enum {
> + MBEDTLS_PK_NONE=0,
> + MBEDTLS_PK_RSA,
> + MBEDTLS_PK_ECKEY,
> + MBEDTLS_PK_ECKEY_DH,
> + MBEDTLS_PK_ECDSA,
> + MBEDTLS_PK_RSA_ALT,
> + MBEDTLS_PK_RSASSA_PSS,
> +} mbedtls_pk_type_t;
> +
> +/**
> + * \brief Options for RSASSA-PSS signature verification.
> + * See \c mbedtls_rsa_rsassa_pss_verify_ext()
> + */
> +typedef struct
> +{
> + mbedtls_md_type_t mgf1_hash_id;
> + int expected_salt_len;
> +
> +} mbedtls_pk_rsassa_pss_options;
> +
> +/**
> + * \brief Types for interfacing with the debug module
> + */
> +typedef enum
> +{
> + MBEDTLS_PK_DEBUG_NONE = 0,
> + MBEDTLS_PK_DEBUG_MPI,
> + MBEDTLS_PK_DEBUG_ECP,
> +} mbedtls_pk_debug_type;
> +
> +/**
> + * \brief Item to send to the debug module
> + */
> +typedef struct
> +{
> + mbedtls_pk_debug_type type;
> + const char *name;
> + void *value;
> +} mbedtls_pk_debug_item;
> +
> +/** Maximum number of item send for debugging, plus 1 */
> +#define MBEDTLS_PK_DEBUG_MAX_ITEMS 3
> +
> +/**
> + * \brief Public key information and operations
> + */
> +typedef struct mbedtls_pk_info_t mbedtls_pk_info_t;
> +
> +/**
> + * \brief Public key container
> + */
> +typedef struct
> +{
> + const mbedtls_pk_info_t * pk_info; /**< Public key informations */
> + void * pk_ctx; /**< Underlying public key context */
> +} mbedtls_pk_context;
> +
> +#if defined(MBEDTLS_RSA_C)
> +/**
> + * Quick access to an RSA context inside a PK context.
> + *
> + * \warning You must make sure the PK context actually holds an RSA context
> + * before using this function!
> + */
> +static inline mbedtls_rsa_context *mbedtls_pk_rsa( const mbedtls_pk_context pk )
> +{
> + return( (mbedtls_rsa_context *) (pk).pk_ctx );
> +}
> +#endif /* MBEDTLS_RSA_C */
> +
> +#if defined(MBEDTLS_ECP_C)
> +/**
> + * Quick access to an EC context inside a PK context.
> + *
> + * \warning You must make sure the PK context actually holds an EC context
> + * before using this function!
> + */
> +static inline mbedtls_ecp_keypair *mbedtls_pk_ec( const mbedtls_pk_context pk )
> +{
> + return( (mbedtls_ecp_keypair *) (pk).pk_ctx );
> +}
> +#endif /* MBEDTLS_ECP_C */
> +
> +#if defined(MBEDTLS_PK_RSA_ALT_SUPPORT)
> +/**
> + * \brief Types for RSA-alt abstraction
> + */
> +typedef int (*mbedtls_pk_rsa_alt_decrypt_func)( void *ctx, int mode, size_t *olen,
> + const unsigned char *input, unsigned char *output,
> + size_t output_max_len );
> +typedef int (*mbedtls_pk_rsa_alt_sign_func)( void *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t), void *p_rng,
> + int mode, mbedtls_md_type_t md_alg, unsigned int hashlen,
> + const unsigned char *hash, unsigned char *sig );
> +typedef size_t (*mbedtls_pk_rsa_alt_key_len_func)( void *ctx );
> +#endif /* MBEDTLS_PK_RSA_ALT_SUPPORT */
> +
> +/**
> + * \brief Return information associated with the given PK type
> + *
> + * \param pk_type PK type to search for.
> + *
> + * \return The PK info associated with the type or NULL if not found.
> + */
> +const mbedtls_pk_info_t *mbedtls_pk_info_from_type( mbedtls_pk_type_t pk_type );
> +
> +/**
> + * \brief Initialize a mbedtls_pk_context (as NONE)
> + */
> +void mbedtls_pk_init( mbedtls_pk_context *ctx );
> +
> +/**
> + * \brief Free a mbedtls_pk_context
> + */
> +void mbedtls_pk_free( mbedtls_pk_context *ctx );
> +
> +/**
> + * \brief Initialize a PK context with the information given
> + * and allocates the type-specific PK subcontext.
> + *
> + * \param ctx Context to initialize. Must be empty (type NONE).
> + * \param info Information to use
> + *
> + * \return 0 on success,
> + * MBEDTLS_ERR_PK_BAD_INPUT_DATA on invalid input,
> + * MBEDTLS_ERR_PK_ALLOC_FAILED on allocation failure.
> + *
> + * \note For contexts holding an RSA-alt key, use
> + * \c mbedtls_pk_setup_rsa_alt() instead.
> + */
> +int mbedtls_pk_setup( mbedtls_pk_context *ctx, const mbedtls_pk_info_t *info );
> +
> +#if defined(MBEDTLS_PK_RSA_ALT_SUPPORT)
> +/**
> + * \brief Initialize an RSA-alt context
> + *
> + * \param ctx Context to initialize. Must be empty (type NONE).
> + * \param key RSA key pointer
> + * \param decrypt_func Decryption function
> + * \param sign_func Signing function
> + * \param key_len_func Function returning key length in bytes
> + *
> + * \return 0 on success, or MBEDTLS_ERR_PK_BAD_INPUT_DATA if the
> + * context wasn't already initialized as RSA_ALT.
> + *
> + * \note This function replaces \c mbedtls_pk_setup() for RSA-alt.
> + */
> +int mbedtls_pk_setup_rsa_alt( mbedtls_pk_context *ctx, void * key,
> + mbedtls_pk_rsa_alt_decrypt_func decrypt_func,
> + mbedtls_pk_rsa_alt_sign_func sign_func,
> + mbedtls_pk_rsa_alt_key_len_func key_len_func );
> +#endif /* MBEDTLS_PK_RSA_ALT_SUPPORT */
> +
> +/**
> + * \brief Get the size in bits of the underlying key
> + *
> + * \param ctx Context to use
> + *
> + * \return Key size in bits, or 0 on error
> + */
> +size_t mbedtls_pk_get_bitlen( const mbedtls_pk_context *ctx );
> +
> +/**
> + * \brief Get the length in bytes of the underlying key
> + * \param ctx Context to use
> + *
> + * \return Key length in bytes, or 0 on error
> + */
> +static inline size_t mbedtls_pk_get_len( const mbedtls_pk_context *ctx )
> +{
> + return( ( mbedtls_pk_get_bitlen( ctx ) + 7 ) / 8 );
> +}
> +
> +/**
> + * \brief Tell if a context can do the operation given by type
> + *
> + * \param ctx Context to test
> + * \param type Target type
> + *
> + * \return 0 if context can't do the operations,
> + * 1 otherwise.
> + */
> +int mbedtls_pk_can_do( const mbedtls_pk_context *ctx, mbedtls_pk_type_t type );
> +
> +/**
> + * \brief Verify signature (including padding if relevant).
> + *
> + * \param ctx PK context to use
> + * \param md_alg Hash algorithm used (see notes)
> + * \param hash Hash of the message to sign
> + * \param hash_len Hash length or 0 (see notes)
> + * \param sig Signature to verify
> + * \param sig_len Signature length
> + *
> + * \return 0 on success (signature is valid),
> + * MBEDTLS_ERR_PK_SIG_LEN_MISMATCH if the signature is
> + * valid but its actual length is less than sig_len,
> + * or a specific error code.
> + *
> + * \note For RSA keys, the default padding type is PKCS#1 v1.5.
> + * Use \c mbedtls_pk_verify_ext( MBEDTLS_PK_RSASSA_PSS, ... )
> + * to verify RSASSA_PSS signatures.
> + *
> + * \note If hash_len is 0, then the length associated with md_alg
> + * is used instead, or an error returned if it is invalid.
> + *
> + * \note md_alg may be MBEDTLS_MD_NONE, only if hash_len != 0
> + */
> +int mbedtls_pk_verify( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
> + const unsigned char *hash, size_t hash_len,
> + const unsigned char *sig, size_t sig_len );
> +
> +/**
> + * \brief Verify signature, with options.
> + * (Includes verification of the padding depending on type.)
> + *
> + * \param type Signature type (inc. possible padding type) to verify
> + * \param options Pointer to type-specific options, or NULL
> + * \param ctx PK context to use
> + * \param md_alg Hash algorithm used (see notes)
> + * \param hash Hash of the message to sign
> + * \param hash_len Hash length or 0 (see notes)
> + * \param sig Signature to verify
> + * \param sig_len Signature length
> + *
> + * \return 0 on success (signature is valid),
> + * MBEDTLS_ERR_PK_TYPE_MISMATCH if the PK context can't be
> + * used for this type of signatures,
> + * MBEDTLS_ERR_PK_SIG_LEN_MISMATCH if the signature is
> + * valid but its actual length is less than sig_len,
> + * or a specific error code.
> + *
> + * \note If hash_len is 0, then the length associated with md_alg
> + * is used instead, or an error returned if it is invalid.
> + *
> + * \note md_alg may be MBEDTLS_MD_NONE, only if hash_len != 0
> + *
> + * \note If type is MBEDTLS_PK_RSASSA_PSS, then options must point
> + * to a mbedtls_pk_rsassa_pss_options structure,
> + * otherwise it must be NULL.
> + */
> +int mbedtls_pk_verify_ext( mbedtls_pk_type_t type, const void *options,
> + mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
> + const unsigned char *hash, size_t hash_len,
> + const unsigned char *sig, size_t sig_len );
> +
> +/**
> + * \brief Make signature, including padding if relevant.
> + *
> + * \param ctx PK context to use - must hold a private key
> + * \param md_alg Hash algorithm used (see notes)
> + * \param hash Hash of the message to sign
> + * \param hash_len Hash length or 0 (see notes)
> + * \param sig Place to write the signature
> + * \param sig_len Number of bytes written
> + * \param f_rng RNG function
> + * \param p_rng RNG parameter
> + *
> + * \return 0 on success, or a specific error code.
> + *
> + * \note For RSA keys, the default padding type is PKCS#1 v1.5.
> + * There is no interface in the PK module to make RSASSA-PSS
> + * signatures yet.
> + *
> + * \note If hash_len is 0, then the length associated with md_alg
> + * is used instead, or an error returned if it is invalid.
> + *
> + * \note For RSA, md_alg may be MBEDTLS_MD_NONE if hash_len != 0.
> + * For ECDSA, md_alg may never be MBEDTLS_MD_NONE.
> + */
> +int mbedtls_pk_sign( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
> + const unsigned char *hash, size_t hash_len,
> + unsigned char *sig, size_t *sig_len,
> + int (*f_rng)(void *, unsigned char *, size_t), void *p_rng );
> +
> +/**
> + * \brief Decrypt message (including padding if relevant).
> + *
> + * \param ctx PK context to use - must hold a private key
> + * \param input Input to decrypt
> + * \param ilen Input size
> + * \param output Decrypted output
> + * \param olen Decrypted message length
> + * \param osize Size of the output buffer
> + * \param f_rng RNG function
> + * \param p_rng RNG parameter
> + *
> + * \note For RSA keys, the default padding type is PKCS#1 v1.5.
> + *
> + * \return 0 on success, or a specific error code.
> + */
> +int mbedtls_pk_decrypt( mbedtls_pk_context *ctx,
> + const unsigned char *input, size_t ilen,
> + unsigned char *output, size_t *olen, size_t osize,
> + int (*f_rng)(void *, unsigned char *, size_t), void *p_rng );
> +
> +/**
> + * \brief Encrypt message (including padding if relevant).
> + *
> + * \param ctx PK context to use
> + * \param input Message to encrypt
> + * \param ilen Message size
> + * \param output Encrypted output
> + * \param olen Encrypted output length
> + * \param osize Size of the output buffer
> + * \param f_rng RNG function
> + * \param p_rng RNG parameter
> + *
> + * \note For RSA keys, the default padding type is PKCS#1 v1.5.
> + *
> + * \return 0 on success, or a specific error code.
> + */
> +int mbedtls_pk_encrypt( mbedtls_pk_context *ctx,
> + const unsigned char *input, size_t ilen,
> + unsigned char *output, size_t *olen, size_t osize,
> + int (*f_rng)(void *, unsigned char *, size_t), void *p_rng );
> +
> +/**
> + * \brief Check if a public-private pair of keys matches.
> + *
> + * \param pub Context holding a public key.
> + * \param prv Context holding a private (and public) key.
> + *
> + * \return 0 on success or MBEDTLS_ERR_PK_BAD_INPUT_DATA
> + */
> +int mbedtls_pk_check_pair( const mbedtls_pk_context *pub, const mbedtls_pk_context *prv );
> +
> +/**
> + * \brief Export debug information
> + *
> + * \param ctx Context to use
> + * \param items Place to write debug items
> + *
> + * \return 0 on success or MBEDTLS_ERR_PK_BAD_INPUT_DATA
> + */
> +int mbedtls_pk_debug( const mbedtls_pk_context *ctx, mbedtls_pk_debug_item *items );
> +
> +/**
> + * \brief Access the type name
> + *
> + * \param ctx Context to use
> + *
> + * \return Type name on success, or "invalid PK"
> + */
> +const char * mbedtls_pk_get_name( const mbedtls_pk_context *ctx );
> +
> +/**
> + * \brief Get the key type
> + *
> + * \param ctx Context to use
> + *
> + * \return Type on success, or MBEDTLS_PK_NONE
> + */
> +mbedtls_pk_type_t mbedtls_pk_get_type( const mbedtls_pk_context *ctx );
> +
> +#if defined(MBEDTLS_PK_PARSE_C)
> +/** \ingroup pk_module */
> +/**
> + * \brief Parse a private key in PEM or DER format
> + *
> + * \param ctx key to be initialized
> + * \param key input buffer
> + * \param keylen size of the buffer
> + * (including the terminating null byte for PEM data)
> + * \param pwd password for decryption (optional)
> + * \param pwdlen size of the password
> + *
> + * \note On entry, ctx must be empty, either freshly initialised
> + * with mbedtls_pk_init() or reset with mbedtls_pk_free(). If you need a
> + * specific key type, check the result with mbedtls_pk_can_do().
> + *
> + * \note The key is also checked for correctness.
> + *
> + * \return 0 if successful, or a specific PK or PEM error code
> + */
> +int mbedtls_pk_parse_key( mbedtls_pk_context *ctx,
> + const unsigned char *key, size_t keylen,
> + const unsigned char *pwd, size_t pwdlen );
> +
> +/** \ingroup pk_module */
> +/**
> + * \brief Parse a public key in PEM or DER format
> + *
> + * \param ctx key to be initialized
> + * \param key input buffer
> + * \param keylen size of the buffer
> + * (including the terminating null byte for PEM data)
> + *
> + * \note On entry, ctx must be empty, either freshly initialised
> + * with mbedtls_pk_init() or reset with mbedtls_pk_free(). If you need a
> + * specific key type, check the result with mbedtls_pk_can_do().
> + *
> + * \note The key is also checked for correctness.
> + *
> + * \return 0 if successful, or a specific PK or PEM error code
> + */
> +int mbedtls_pk_parse_public_key( mbedtls_pk_context *ctx,
> + const unsigned char *key, size_t keylen );
> +
> +#if defined(MBEDTLS_FS_IO)
> +/** \ingroup pk_module */
> +/**
> + * \brief Load and parse a private key
> + *
> + * \param ctx key to be initialized
> + * \param path filename to read the private key from
> + * \param password password to decrypt the file (can be NULL)
> + *
> + * \note On entry, ctx must be empty, either freshly initialised
> + * with mbedtls_pk_init() or reset with mbedtls_pk_free(). If you need a
> + * specific key type, check the result with mbedtls_pk_can_do().
> + *
> + * \note The key is also checked for correctness.
> + *
> + * \return 0 if successful, or a specific PK or PEM error code
> + */
> +int mbedtls_pk_parse_keyfile( mbedtls_pk_context *ctx,
> + const char *path, const char *password );
> +
> +/** \ingroup pk_module */
> +/**
> + * \brief Load and parse a public key
> + *
> + * \param ctx key to be initialized
> + * \param path filename to read the public key from
> + *
> + * \note On entry, ctx must be empty, either freshly initialised
> + * with mbedtls_pk_init() or reset with mbedtls_pk_free(). If
> + * you need a specific key type, check the result with
> + * mbedtls_pk_can_do().
> + *
> + * \note The key is also checked for correctness.
> + *
> + * \return 0 if successful, or a specific PK or PEM error code
> + */
> +int mbedtls_pk_parse_public_keyfile( mbedtls_pk_context *ctx, const char *path );
> +#endif /* MBEDTLS_FS_IO */
> +#endif /* MBEDTLS_PK_PARSE_C */
> +
> +#if defined(MBEDTLS_PK_WRITE_C)
> +/**
> + * \brief Write a private key to a PKCS#1 or SEC1 DER structure
> + * Note: data is written at the end of the buffer! Use the
> + * return value to determine where you should start
> + * using the buffer
> + *
> + * \param ctx private to write away
> + * \param buf buffer to write to
> + * \param size size of the buffer
> + *
> + * \return length of data written if successful, or a specific
> + * error code
> + */
> +int mbedtls_pk_write_key_der( mbedtls_pk_context *ctx, unsigned char *buf, size_t size );
> +
> +/**
> + * \brief Write a public key to a SubjectPublicKeyInfo DER structure
> + * Note: data is written at the end of the buffer! Use the
> + * return value to determine where you should start
> + * using the buffer
> + *
> + * \param ctx public key to write away
> + * \param buf buffer to write to
> + * \param size size of the buffer
> + *
> + * \return length of data written if successful, or a specific
> + * error code
> + */
> +int mbedtls_pk_write_pubkey_der( mbedtls_pk_context *ctx, unsigned char *buf, size_t size );
> +
> +#if defined(MBEDTLS_PEM_WRITE_C)
> +/**
> + * \brief Write a public key to a PEM string
> + *
> + * \param ctx public key to write away
> + * \param buf buffer to write to
> + * \param size size of the buffer
> + *
> + * \return 0 if successful, or a specific error code
> + */
> +int mbedtls_pk_write_pubkey_pem( mbedtls_pk_context *ctx, unsigned char *buf, size_t size );
> +
> +/**
> + * \brief Write a private key to a PKCS#1 or SEC1 PEM string
> + *
> + * \param ctx private to write away
> + * \param buf buffer to write to
> + * \param size size of the buffer
> + *
> + * \return 0 if successful, or a specific error code
> + */
> +int mbedtls_pk_write_key_pem( mbedtls_pk_context *ctx, unsigned char *buf, size_t size );
> +#endif /* MBEDTLS_PEM_WRITE_C */
> +#endif /* MBEDTLS_PK_WRITE_C */
> +
> +/*
> + * WARNING: Low-level functions. You probably do not want to use these unless
> + * you are certain you do ;)
> + */
> +
> +#if defined(MBEDTLS_PK_PARSE_C)
> +/**
> + * \brief Parse a SubjectPublicKeyInfo DER structure
> + *
> + * \param p the position in the ASN.1 data
> + * \param end end of the buffer
> + * \param pk the key to fill
> + *
> + * \return 0 if successful, or a specific PK error code
> + */
> +int mbedtls_pk_parse_subpubkey( unsigned char **p, const unsigned char *end,
> + mbedtls_pk_context *pk );
> +#endif /* MBEDTLS_PK_PARSE_C */
> +
> +#if defined(MBEDTLS_PK_WRITE_C)
> +/**
> + * \brief Write a subjectPublicKey to ASN.1 data
> + * Note: function works backwards in data buffer
> + *
> + * \param p reference to current position pointer
> + * \param start start of the buffer (for bounds-checking)
> + * \param key public key to write away
> + *
> + * \return the length written or a negative error code
> + */
> +int mbedtls_pk_write_pubkey( unsigned char **p, unsigned char *start,
> + const mbedtls_pk_context *key );
> +#endif /* MBEDTLS_PK_WRITE_C */
> +
> +/*
> + * Internal module functions. You probably do not want to use these unless you
> + * know you do.
> + */
> +#if defined(MBEDTLS_FS_IO)
> +int mbedtls_pk_load_file( const char *path, unsigned char **buf, size_t *n );
> +#endif
> +
> +#ifdef __cplusplus
> +}
> +#endif
> +
> +#endif /* MBEDTLS_PK_H */
> diff --git a/backport/compat/verification/mbedtls/platform.h b/backport/compat/verification/mbedtls/platform.h
> new file mode 100644
> index 000000000000..cf5fa56f5f17
> --- /dev/null
> +++ b/backport/compat/verification/mbedtls/platform.h
> @@ -0,0 +1,12 @@
> +#ifndef __MBEDTLS_PLATFORM_H
> +#define __MBEDTLS_PLATFORM_H
> +#include <linux/kernel.h>
> +#include <linux/slab.h>
> +#include <linux/string.h>
> +
> +#define mbedtls_printf pr_debug
> +#define mbedtls_calloc(a, b) kcalloc(a, b, GFP_KERNEL)
> +#define mbedtls_free kfree
> +#define mbedtls_snprintf snprintf
> +
> +#endif /* __MBEDTLS_PLATFORM_H */
> diff --git a/backport/compat/verification/mbedtls/rsa.h b/backport/compat/verification/mbedtls/rsa.h
> new file mode 100644
> index 000000000000..9683520ce0b3
> --- /dev/null
> +++ b/backport/compat/verification/mbedtls/rsa.h
> @@ -0,0 +1,672 @@
> +/**
> + * \file rsa.h
> + *
> + * \brief The RSA public-key cryptosystem
> + *
> + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
> + * SPDX-License-Identifier: GPL-2.0
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * This file is part of mbed TLS (https://tls.mbed.org)
> + */
> +#ifndef MBEDTLS_RSA_H
> +#define MBEDTLS_RSA_H
> +
> +#if !defined(MBEDTLS_CONFIG_FILE)
> +#include "config.h"
> +#else
> +#include MBEDTLS_CONFIG_FILE
> +#endif
> +
> +#include "bignum.h"
> +#include "md.h"
> +
> +#if defined(MBEDTLS_THREADING_C)
> +#include "threading.h"
> +#endif
> +
> +/*
> + * RSA Error codes
> + */
> +#define MBEDTLS_ERR_RSA_BAD_INPUT_DATA -0x4080 /**< Bad input parameters to function. */
> +#define MBEDTLS_ERR_RSA_INVALID_PADDING -0x4100 /**< Input data contains invalid padding and is rejected. */
> +#define MBEDTLS_ERR_RSA_KEY_GEN_FAILED -0x4180 /**< Something failed during generation of a key. */
> +#define MBEDTLS_ERR_RSA_KEY_CHECK_FAILED -0x4200 /**< Key failed to pass the library's validity check. */
> +#define MBEDTLS_ERR_RSA_PUBLIC_FAILED -0x4280 /**< The public key operation failed. */
> +#define MBEDTLS_ERR_RSA_PRIVATE_FAILED -0x4300 /**< The private key operation failed. */
> +#define MBEDTLS_ERR_RSA_VERIFY_FAILED -0x4380 /**< The PKCS#1 verification failed. */
> +#define MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE -0x4400 /**< The output buffer for decryption is not large enough. */
> +#define MBEDTLS_ERR_RSA_RNG_FAILED -0x4480 /**< The random generator failed to generate non-zeros. */
> +
> +/*
> + * RSA constants
> + */
> +#define MBEDTLS_RSA_PUBLIC 0
> +#define MBEDTLS_RSA_PRIVATE 1
> +
> +#define MBEDTLS_RSA_PKCS_V15 0
> +#define MBEDTLS_RSA_PKCS_V21 1
> +
> +#define MBEDTLS_RSA_SIGN 1
> +#define MBEDTLS_RSA_CRYPT 2
> +
> +#define MBEDTLS_RSA_SALT_LEN_ANY -1
> +
> +/*
> + * The above constants may be used even if the RSA module is compile out,
> + * eg for alternative (PKCS#11) RSA implemenations in the PK layers.
> + */
> +#if defined(MBEDTLS_RSA_C)
> +
> +#ifdef __cplusplus
> +extern "C" {
> +#endif
> +
> +/**
> + * \brief RSA context structure
> + */
> +typedef struct
> +{
> + int ver; /*!< always 0 */
> + size_t len; /*!< size(N) in chars */
> +
> + mbedtls_mpi N; /*!< public modulus */
> + mbedtls_mpi E; /*!< public exponent */
> +
> + mbedtls_mpi D; /*!< private exponent */
> + mbedtls_mpi P; /*!< 1st prime factor */
> + mbedtls_mpi Q; /*!< 2nd prime factor */
> + mbedtls_mpi DP; /*!< D % (P - 1) */
> + mbedtls_mpi DQ; /*!< D % (Q - 1) */
> + mbedtls_mpi QP; /*!< 1 / (Q % P) */
> +
> + mbedtls_mpi RN; /*!< cached R^2 mod N */
> + mbedtls_mpi RP; /*!< cached R^2 mod P */
> + mbedtls_mpi RQ; /*!< cached R^2 mod Q */
> +
> + mbedtls_mpi Vi; /*!< cached blinding value */
> + mbedtls_mpi Vf; /*!< cached un-blinding value */
> +
> + int padding; /*!< MBEDTLS_RSA_PKCS_V15 for 1.5 padding and
> + MBEDTLS_RSA_PKCS_v21 for OAEP/PSS */
> + int hash_id; /*!< Hash identifier of mbedtls_md_type_t as
> + specified in the mbedtls_md.h header file
> + for the EME-OAEP and EMSA-PSS
> + encoding */
> +#if defined(MBEDTLS_THREADING_C)
> + mbedtls_threading_mutex_t mutex; /*!< Thread-safety mutex */
> +#endif
> +}
> +mbedtls_rsa_context;
> +
> +/**
> + * \brief Initialize an RSA context
> + *
> + * Note: Set padding to MBEDTLS_RSA_PKCS_V21 for the RSAES-OAEP
> + * encryption scheme and the RSASSA-PSS signature scheme.
> + *
> + * \param ctx RSA context to be initialized
> + * \param padding MBEDTLS_RSA_PKCS_V15 or MBEDTLS_RSA_PKCS_V21
> + * \param hash_id MBEDTLS_RSA_PKCS_V21 hash identifier
> + *
> + * \note The hash_id parameter is actually ignored
> + * when using MBEDTLS_RSA_PKCS_V15 padding.
> + *
> + * \note Choice of padding mode is strictly enforced for private key
> + * operations, since there might be security concerns in
> + * mixing padding modes. For public key operations it's merely
> + * a default value, which can be overriden by calling specific
> + * rsa_rsaes_xxx or rsa_rsassa_xxx functions.
> + *
> + * \note The chosen hash is always used for OEAP encryption.
> + * For PSS signatures, it's always used for making signatures,
> + * but can be overriden (and always is, if set to
> + * MBEDTLS_MD_NONE) for verifying them.
> + */
> +void mbedtls_rsa_init( mbedtls_rsa_context *ctx,
> + int padding,
> + int hash_id);
> +
> +/**
> + * \brief Set padding for an already initialized RSA context
> + * See \c mbedtls_rsa_init() for details.
> + *
> + * \param ctx RSA context to be set
> + * \param padding MBEDTLS_RSA_PKCS_V15 or MBEDTLS_RSA_PKCS_V21
> + * \param hash_id MBEDTLS_RSA_PKCS_V21 hash identifier
> + */
> +void mbedtls_rsa_set_padding( mbedtls_rsa_context *ctx, int padding, int hash_id);
> +
> +/**
> + * \brief Generate an RSA keypair
> + *
> + * \param ctx RSA context that will hold the key
> + * \param f_rng RNG function
> + * \param p_rng RNG parameter
> + * \param nbits size of the public key in bits
> + * \param exponent public exponent (e.g., 65537)
> + *
> + * \note mbedtls_rsa_init() must be called beforehand to setup
> + * the RSA context.
> + *
> + * \return 0 if successful, or an MBEDTLS_ERR_RSA_XXX error code
> + */
> +int mbedtls_rsa_gen_key( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + unsigned int nbits, int exponent );
> +
> +/**
> + * \brief Check a public RSA key
> + *
> + * \param ctx RSA context to be checked
> + *
> + * \return 0 if successful, or an MBEDTLS_ERR_RSA_XXX error code
> + */
> +int mbedtls_rsa_check_pubkey( const mbedtls_rsa_context *ctx );
> +
> +/**
> + * \brief Check a private RSA key
> + *
> + * \param ctx RSA context to be checked
> + *
> + * \return 0 if successful, or an MBEDTLS_ERR_RSA_XXX error code
> + */
> +int mbedtls_rsa_check_privkey( const mbedtls_rsa_context *ctx );
> +
> +/**
> + * \brief Check a public-private RSA key pair.
> + * Check each of the contexts, and make sure they match.
> + *
> + * \param pub RSA context holding the public key
> + * \param prv RSA context holding the private key
> + *
> + * \return 0 if successful, or an MBEDTLS_ERR_RSA_XXX error code
> + */
> +int mbedtls_rsa_check_pub_priv( const mbedtls_rsa_context *pub, const mbedtls_rsa_context *prv );
> +
> +/**
> + * \brief Do an RSA public key operation
> + *
> + * \param ctx RSA context
> + * \param input input buffer
> + * \param output output buffer
> + *
> + * \return 0 if successful, or an MBEDTLS_ERR_RSA_XXX error code
> + *
> + * \note This function does NOT take care of message
> + * padding. Also, be sure to set input[0] = 0 or ensure that
> + * input is smaller than N.
> + *
> + * \note The input and output buffers must be large
> + * enough (eg. 128 bytes if RSA-1024 is used).
> + */
> +int mbedtls_rsa_public( mbedtls_rsa_context *ctx,
> + const unsigned char *input,
> + unsigned char *output );
> +
> +/**
> + * \brief Do an RSA private key operation
> + *
> + * \param ctx RSA context
> + * \param f_rng RNG function (Needed for blinding)
> + * \param p_rng RNG parameter
> + * \param input input buffer
> + * \param output output buffer
> + *
> + * \return 0 if successful, or an MBEDTLS_ERR_RSA_XXX error code
> + *
> + * \note The input and output buffers must be large
> + * enough (eg. 128 bytes if RSA-1024 is used).
> + */
> +int mbedtls_rsa_private( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + const unsigned char *input,
> + unsigned char *output );
> +
> +/**
> + * \brief Generic wrapper to perform a PKCS#1 encryption using the
> + * mode from the context. Add the message padding, then do an
> + * RSA operation.
> + *
> + * \param ctx RSA context
> + * \param f_rng RNG function (Needed for padding and PKCS#1 v2.1 encoding
> + * and MBEDTLS_RSA_PRIVATE)
> + * \param p_rng RNG parameter
> + * \param mode MBEDTLS_RSA_PUBLIC or MBEDTLS_RSA_PRIVATE
> + * \param ilen contains the plaintext length
> + * \param input buffer holding the data to be encrypted
> + * \param output buffer that will hold the ciphertext
> + *
> + * \return 0 if successful, or an MBEDTLS_ERR_RSA_XXX error code
> + *
> + * \note The output buffer must be as large as the size
> + * of ctx->N (eg. 128 bytes if RSA-1024 is used).
> + */
> +int mbedtls_rsa_pkcs1_encrypt( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode, size_t ilen,
> + const unsigned char *input,
> + unsigned char *output );
> +
> +/**
> + * \brief Perform a PKCS#1 v1.5 encryption (RSAES-PKCS1-v1_5-ENCRYPT)
> + *
> + * \param ctx RSA context
> + * \param f_rng RNG function (Needed for padding and MBEDTLS_RSA_PRIVATE)
> + * \param p_rng RNG parameter
> + * \param mode MBEDTLS_RSA_PUBLIC or MBEDTLS_RSA_PRIVATE
> + * \param ilen contains the plaintext length
> + * \param input buffer holding the data to be encrypted
> + * \param output buffer that will hold the ciphertext
> + *
> + * \return 0 if successful, or an MBEDTLS_ERR_RSA_XXX error code
> + *
> + * \note The output buffer must be as large as the size
> + * of ctx->N (eg. 128 bytes if RSA-1024 is used).
> + */
> +int mbedtls_rsa_rsaes_pkcs1_v15_encrypt( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode, size_t ilen,
> + const unsigned char *input,
> + unsigned char *output );
> +
> +/**
> + * \brief Perform a PKCS#1 v2.1 OAEP encryption (RSAES-OAEP-ENCRYPT)
> + *
> + * \param ctx RSA context
> + * \param f_rng RNG function (Needed for padding and PKCS#1 v2.1 encoding
> + * and MBEDTLS_RSA_PRIVATE)
> + * \param p_rng RNG parameter
> + * \param mode MBEDTLS_RSA_PUBLIC or MBEDTLS_RSA_PRIVATE
> + * \param label buffer holding the custom label to use
> + * \param label_len contains the label length
> + * \param ilen contains the plaintext length
> + * \param input buffer holding the data to be encrypted
> + * \param output buffer that will hold the ciphertext
> + *
> + * \return 0 if successful, or an MBEDTLS_ERR_RSA_XXX error code
> + *
> + * \note The output buffer must be as large as the size
> + * of ctx->N (eg. 128 bytes if RSA-1024 is used).
> + */
> +int mbedtls_rsa_rsaes_oaep_encrypt( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode,
> + const unsigned char *label, size_t label_len,
> + size_t ilen,
> + const unsigned char *input,
> + unsigned char *output );
> +
> +/**
> + * \brief Generic wrapper to perform a PKCS#1 decryption using the
> + * mode from the context. Do an RSA operation, then remove
> + * the message padding
> + *
> + * \param ctx RSA context
> + * \param f_rng RNG function (Only needed for MBEDTLS_RSA_PRIVATE)
> + * \param p_rng RNG parameter
> + * \param mode MBEDTLS_RSA_PUBLIC or MBEDTLS_RSA_PRIVATE
> + * \param olen will contain the plaintext length
> + * \param input buffer holding the encrypted data
> + * \param output buffer that will hold the plaintext
> + * \param output_max_len maximum length of the output buffer
> + *
> + * \return 0 if successful, or an MBEDTLS_ERR_RSA_XXX error code
> + *
> + * \note The output buffer length \c output_max_len should be
> + * as large as the size ctx->len of ctx->N (eg. 128 bytes
> + * if RSA-1024 is used) to be able to hold an arbitrary
> + * decrypted message. If it is not large enough to hold
> + * the decryption of the particular ciphertext provided,
> + * the function will return MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE.
> + *
> + * \note The input buffer must be as large as the size
> + * of ctx->N (eg. 128 bytes if RSA-1024 is used).
> + */
> +int mbedtls_rsa_pkcs1_decrypt( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode, size_t *olen,
> + const unsigned char *input,
> + unsigned char *output,
> + size_t output_max_len );
> +
> +/**
> + * \brief Perform a PKCS#1 v1.5 decryption (RSAES-PKCS1-v1_5-DECRYPT)
> + *
> + * \param ctx RSA context
> + * \param f_rng RNG function (Only needed for MBEDTLS_RSA_PRIVATE)
> + * \param p_rng RNG parameter
> + * \param mode MBEDTLS_RSA_PUBLIC or MBEDTLS_RSA_PRIVATE
> + * \param olen will contain the plaintext length
> + * \param input buffer holding the encrypted data
> + * \param output buffer that will hold the plaintext
> + * \param output_max_len maximum length of the output buffer
> + *
> + * \return 0 if successful, or an MBEDTLS_ERR_RSA_XXX error code
> + *
> + * \note The output buffer length \c output_max_len should be
> + * as large as the size ctx->len of ctx->N (eg. 128 bytes
> + * if RSA-1024 is used) to be able to hold an arbitrary
> + * decrypted message. If it is not large enough to hold
> + * the decryption of the particular ciphertext provided,
> + * the function will return MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE.
> + *
> + * \note The input buffer must be as large as the size
> + * of ctx->N (eg. 128 bytes if RSA-1024 is used).
> + */
> +int mbedtls_rsa_rsaes_pkcs1_v15_decrypt( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode, size_t *olen,
> + const unsigned char *input,
> + unsigned char *output,
> + size_t output_max_len );
> +
> +/**
> + * \brief Perform a PKCS#1 v2.1 OAEP decryption (RSAES-OAEP-DECRYPT)
> + *
> + * \param ctx RSA context
> + * \param f_rng RNG function (Only needed for MBEDTLS_RSA_PRIVATE)
> + * \param p_rng RNG parameter
> + * \param mode MBEDTLS_RSA_PUBLIC or MBEDTLS_RSA_PRIVATE
> + * \param label buffer holding the custom label to use
> + * \param label_len contains the label length
> + * \param olen will contain the plaintext length
> + * \param input buffer holding the encrypted data
> + * \param output buffer that will hold the plaintext
> + * \param output_max_len maximum length of the output buffer
> + *
> + * \return 0 if successful, or an MBEDTLS_ERR_RSA_XXX error code
> + *
> + * \note The output buffer length \c output_max_len should be
> + * as large as the size ctx->len of ctx->N (eg. 128 bytes
> + * if RSA-1024 is used) to be able to hold an arbitrary
> + * decrypted message. If it is not large enough to hold
> + * the decryption of the particular ciphertext provided,
> + * the function will return MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE.
> + *
> + * \note The input buffer must be as large as the size
> + * of ctx->N (eg. 128 bytes if RSA-1024 is used).
> + */
> +int mbedtls_rsa_rsaes_oaep_decrypt( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode,
> + const unsigned char *label, size_t label_len,
> + size_t *olen,
> + const unsigned char *input,
> + unsigned char *output,
> + size_t output_max_len );
> +
> +/**
> + * \brief Generic wrapper to perform a PKCS#1 signature using the
> + * mode from the context. Do a private RSA operation to sign
> + * a message digest
> + *
> + * \param ctx RSA context
> + * \param f_rng RNG function (Needed for PKCS#1 v2.1 encoding and for
> + * MBEDTLS_RSA_PRIVATE)
> + * \param p_rng RNG parameter
> + * \param mode MBEDTLS_RSA_PUBLIC or MBEDTLS_RSA_PRIVATE
> + * \param md_alg a MBEDTLS_MD_XXX (use MBEDTLS_MD_NONE for signing raw data)
> + * \param hashlen message digest length (for MBEDTLS_MD_NONE only)
> + * \param hash buffer holding the message digest
> + * \param sig buffer that will hold the ciphertext
> + *
> + * \return 0 if the signing operation was successful,
> + * or an MBEDTLS_ERR_RSA_XXX error code
> + *
> + * \note The "sig" buffer must be as large as the size
> + * of ctx->N (eg. 128 bytes if RSA-1024 is used).
> + *
> + * \note In case of PKCS#1 v2.1 encoding, see comments on
> + * \note \c mbedtls_rsa_rsassa_pss_sign() for details on md_alg and hash_id.
> + */
> +int mbedtls_rsa_pkcs1_sign( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode,
> + mbedtls_md_type_t md_alg,
> + unsigned int hashlen,
> + const unsigned char *hash,
> + unsigned char *sig );
> +
> +/**
> + * \brief Perform a PKCS#1 v1.5 signature (RSASSA-PKCS1-v1_5-SIGN)
> + *
> + * \param ctx RSA context
> + * \param f_rng RNG function (Only needed for MBEDTLS_RSA_PRIVATE)
> + * \param p_rng RNG parameter
> + * \param mode MBEDTLS_RSA_PUBLIC or MBEDTLS_RSA_PRIVATE
> + * \param md_alg a MBEDTLS_MD_XXX (use MBEDTLS_MD_NONE for signing raw data)
> + * \param hashlen message digest length (for MBEDTLS_MD_NONE only)
> + * \param hash buffer holding the message digest
> + * \param sig buffer that will hold the ciphertext
> + *
> + * \return 0 if the signing operation was successful,
> + * or an MBEDTLS_ERR_RSA_XXX error code
> + *
> + * \note The "sig" buffer must be as large as the size
> + * of ctx->N (eg. 128 bytes if RSA-1024 is used).
> + */
> +int mbedtls_rsa_rsassa_pkcs1_v15_sign( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode,
> + mbedtls_md_type_t md_alg,
> + unsigned int hashlen,
> + const unsigned char *hash,
> + unsigned char *sig );
> +
> +/**
> + * \brief Perform a PKCS#1 v2.1 PSS signature (RSASSA-PSS-SIGN)
> + *
> + * \param ctx RSA context
> + * \param f_rng RNG function (Needed for PKCS#1 v2.1 encoding and for
> + * MBEDTLS_RSA_PRIVATE)
> + * \param p_rng RNG parameter
> + * \param mode MBEDTLS_RSA_PUBLIC or MBEDTLS_RSA_PRIVATE
> + * \param md_alg a MBEDTLS_MD_XXX (use MBEDTLS_MD_NONE for signing raw data)
> + * \param hashlen message digest length (for MBEDTLS_MD_NONE only)
> + * \param hash buffer holding the message digest
> + * \param sig buffer that will hold the ciphertext
> + *
> + * \return 0 if the signing operation was successful,
> + * or an MBEDTLS_ERR_RSA_XXX error code
> + *
> + * \note The "sig" buffer must be as large as the size
> + * of ctx->N (eg. 128 bytes if RSA-1024 is used).
> + *
> + * \note The hash_id in the RSA context is the one used for the
> + * encoding. md_alg in the function call is the type of hash
> + * that is encoded. According to RFC 3447 it is advised to
> + * keep both hashes the same.
> + */
> +int mbedtls_rsa_rsassa_pss_sign( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode,
> + mbedtls_md_type_t md_alg,
> + unsigned int hashlen,
> + const unsigned char *hash,
> + unsigned char *sig );
> +
> +/**
> + * \brief Generic wrapper to perform a PKCS#1 verification using the
> + * mode from the context. Do a public RSA operation and check
> + * the message digest
> + *
> + * \param ctx points to an RSA public key
> + * \param f_rng RNG function (Only needed for MBEDTLS_RSA_PRIVATE)
> + * \param p_rng RNG parameter
> + * \param mode MBEDTLS_RSA_PUBLIC or MBEDTLS_RSA_PRIVATE
> + * \param md_alg a MBEDTLS_MD_XXX (use MBEDTLS_MD_NONE for signing raw data)
> + * \param hashlen message digest length (for MBEDTLS_MD_NONE only)
> + * \param hash buffer holding the message digest
> + * \param sig buffer holding the ciphertext
> + *
> + * \return 0 if the verify operation was successful,
> + * or an MBEDTLS_ERR_RSA_XXX error code
> + *
> + * \note The "sig" buffer must be as large as the size
> + * of ctx->N (eg. 128 bytes if RSA-1024 is used).
> + *
> + * \note In case of PKCS#1 v2.1 encoding, see comments on
> + * \c mbedtls_rsa_rsassa_pss_verify() about md_alg and hash_id.
> + */
> +int mbedtls_rsa_pkcs1_verify( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode,
> + mbedtls_md_type_t md_alg,
> + unsigned int hashlen,
> + const unsigned char *hash,
> + const unsigned char *sig );
> +
> +/**
> + * \brief Perform a PKCS#1 v1.5 verification (RSASSA-PKCS1-v1_5-VERIFY)
> + *
> + * \param ctx points to an RSA public key
> + * \param f_rng RNG function (Only needed for MBEDTLS_RSA_PRIVATE)
> + * \param p_rng RNG parameter
> + * \param mode MBEDTLS_RSA_PUBLIC or MBEDTLS_RSA_PRIVATE
> + * \param md_alg a MBEDTLS_MD_XXX (use MBEDTLS_MD_NONE for signing raw data)
> + * \param hashlen message digest length (for MBEDTLS_MD_NONE only)
> + * \param hash buffer holding the message digest
> + * \param sig buffer holding the ciphertext
> + *
> + * \return 0 if the verify operation was successful,
> + * or an MBEDTLS_ERR_RSA_XXX error code
> + *
> + * \note The "sig" buffer must be as large as the size
> + * of ctx->N (eg. 128 bytes if RSA-1024 is used).
> + */
> +int mbedtls_rsa_rsassa_pkcs1_v15_verify( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode,
> + mbedtls_md_type_t md_alg,
> + unsigned int hashlen,
> + const unsigned char *hash,
> + const unsigned char *sig );
> +
> +/**
> + * \brief Perform a PKCS#1 v2.1 PSS verification (RSASSA-PSS-VERIFY)
> + * (This is the "simple" version.)
> + *
> + * \param ctx points to an RSA public key
> + * \param f_rng RNG function (Only needed for MBEDTLS_RSA_PRIVATE)
> + * \param p_rng RNG parameter
> + * \param mode MBEDTLS_RSA_PUBLIC or MBEDTLS_RSA_PRIVATE
> + * \param md_alg a MBEDTLS_MD_XXX (use MBEDTLS_MD_NONE for signing raw data)
> + * \param hashlen message digest length (for MBEDTLS_MD_NONE only)
> + * \param hash buffer holding the message digest
> + * \param sig buffer holding the ciphertext
> + *
> + * \return 0 if the verify operation was successful,
> + * or an MBEDTLS_ERR_RSA_XXX error code
> + *
> + * \note The "sig" buffer must be as large as the size
> + * of ctx->N (eg. 128 bytes if RSA-1024 is used).
> + *
> + * \note The hash_id in the RSA context is the one used for the
> + * verification. md_alg in the function call is the type of
> + * hash that is verified. According to RFC 3447 it is advised to
> + * keep both hashes the same. If hash_id in the RSA context is
> + * unset, the md_alg from the function call is used.
> + */
> +int mbedtls_rsa_rsassa_pss_verify( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode,
> + mbedtls_md_type_t md_alg,
> + unsigned int hashlen,
> + const unsigned char *hash,
> + const unsigned char *sig );
> +
> +/**
> + * \brief Perform a PKCS#1 v2.1 PSS verification (RSASSA-PSS-VERIFY)
> + * (This is the version with "full" options.)
> + *
> + * \param ctx points to an RSA public key
> + * \param f_rng RNG function (Only needed for MBEDTLS_RSA_PRIVATE)
> + * \param p_rng RNG parameter
> + * \param mode MBEDTLS_RSA_PUBLIC or MBEDTLS_RSA_PRIVATE
> + * \param md_alg a MBEDTLS_MD_XXX (use MBEDTLS_MD_NONE for signing raw data)
> + * \param hashlen message digest length (for MBEDTLS_MD_NONE only)
> + * \param hash buffer holding the message digest
> + * \param mgf1_hash_id message digest used for mask generation
> + * \param expected_salt_len Length of the salt used in padding, use
> + * MBEDTLS_RSA_SALT_LEN_ANY to accept any salt length
> + * \param sig buffer holding the ciphertext
> + *
> + * \return 0 if the verify operation was successful,
> + * or an MBEDTLS_ERR_RSA_XXX error code
> + *
> + * \note The "sig" buffer must be as large as the size
> + * of ctx->N (eg. 128 bytes if RSA-1024 is used).
> + *
> + * \note The hash_id in the RSA context is ignored.
> + */
> +int mbedtls_rsa_rsassa_pss_verify_ext( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode,
> + mbedtls_md_type_t md_alg,
> + unsigned int hashlen,
> + const unsigned char *hash,
> + mbedtls_md_type_t mgf1_hash_id,
> + int expected_salt_len,
> + const unsigned char *sig );
> +
> +/**
> + * \brief Copy the components of an RSA context
> + *
> + * \param dst Destination context
> + * \param src Source context
> + *
> + * \return 0 on success,
> + * MBEDTLS_ERR_MPI_ALLOC_FAILED on memory allocation failure
> + */
> +int mbedtls_rsa_copy( mbedtls_rsa_context *dst, const mbedtls_rsa_context *src );
> +
> +/**
> + * \brief Free the components of an RSA key
> + *
> + * \param ctx RSA Context to free
> + */
> +void mbedtls_rsa_free( mbedtls_rsa_context *ctx );
> +
> +/**
> + * \brief Checkup routine
> + *
> + * \return 0 if successful, or 1 if the test failed
> + */
> +int mbedtls_rsa_self_test( int verbose );
> +
> +#ifdef __cplusplus
> +}
> +#endif
> +
> +#endif /* MBEDTLS_RSA_C */
> +
> +#endif /* rsa.h */
> diff --git a/backport/compat/verification/mbedtls/sha1.h b/backport/compat/verification/mbedtls/sha1.h
> new file mode 100644
> index 000000000000..b8752eddfdb5
> --- /dev/null
> +++ b/backport/compat/verification/mbedtls/sha1.h
> @@ -0,0 +1,135 @@
> +/**
> + * \file sha1.h
> + *
> + * \brief SHA-1 cryptographic hash function
> + *
> + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
> + * SPDX-License-Identifier: GPL-2.0
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * This file is part of mbed TLS (https://tls.mbed.org)
> + */
> +#ifndef MBEDTLS_SHA1_H
> +#define MBEDTLS_SHA1_H
> +
> +#if !defined(MBEDTLS_CONFIG_FILE)
> +#include "config.h"
> +#else
> +#include MBEDTLS_CONFIG_FILE
> +#endif
> +
> +#if !defined(MBEDTLS_SHA1_ALT)
> +// Regular implementation
> +//
> +
> +#ifdef __cplusplus
> +extern "C" {
> +#endif
> +
> +/**
> + * \brief SHA-1 context structure
> + */
> +typedef struct
> +{
> + uint32_t total[2]; /*!< number of bytes processed */
> + uint32_t state[5]; /*!< intermediate digest state */
> + unsigned char buffer[64]; /*!< data block being processed */
> +}
> +mbedtls_sha1_context;
> +
> +/**
> + * \brief Initialize SHA-1 context
> + *
> + * \param ctx SHA-1 context to be initialized
> + */
> +void mbedtls_sha1_init( mbedtls_sha1_context *ctx );
> +
> +/**
> + * \brief Clear SHA-1 context
> + *
> + * \param ctx SHA-1 context to be cleared
> + */
> +void mbedtls_sha1_free( mbedtls_sha1_context *ctx );
> +
> +/**
> + * \brief Clone (the state of) a SHA-1 context
> + *
> + * \param dst The destination context
> + * \param src The context to be cloned
> + */
> +void mbedtls_sha1_clone( mbedtls_sha1_context *dst,
> + const mbedtls_sha1_context *src );
> +
> +/**
> + * \brief SHA-1 context setup
> + *
> + * \param ctx context to be initialized
> + */
> +void mbedtls_sha1_starts( mbedtls_sha1_context *ctx );
> +
> +/**
> + * \brief SHA-1 process buffer
> + *
> + * \param ctx SHA-1 context
> + * \param input buffer holding the data
> + * \param ilen length of the input data
> + */
> +void mbedtls_sha1_update( mbedtls_sha1_context *ctx, const unsigned char *input, size_t ilen );
> +
> +/**
> + * \brief SHA-1 final digest
> + *
> + * \param ctx SHA-1 context
> + * \param output SHA-1 checksum result
> + */
> +void mbedtls_sha1_finish( mbedtls_sha1_context *ctx, unsigned char output[20] );
> +
> +/* Internal use */
> +void mbedtls_sha1_process( mbedtls_sha1_context *ctx, const unsigned char data[64] );
> +
> +#ifdef __cplusplus
> +}
> +#endif
> +
> +#else /* MBEDTLS_SHA1_ALT */
> +#include "sha1_alt.h"
> +#endif /* MBEDTLS_SHA1_ALT */
> +
> +#ifdef __cplusplus
> +extern "C" {
> +#endif
> +
> +/**
> + * \brief Output = SHA-1( input buffer )
> + *
> + * \param input buffer holding the data
> + * \param ilen length of the input data
> + * \param output SHA-1 checksum result
> + */
> +void mbedtls_sha1( const unsigned char *input, size_t ilen, unsigned char output[20] );
> +
> +/**
> + * \brief Checkup routine
> + *
> + * \return 0 if successful, or 1 if the test failed
> + */
> +int mbedtls_sha1_self_test( int verbose );
> +
> +#ifdef __cplusplus
> +}
> +#endif
> +
> +#endif /* mbedtls_sha1.h */
> diff --git a/backport/compat/verification/mbedtls/sha256.h b/backport/compat/verification/mbedtls/sha256.h
> new file mode 100644
> index 000000000000..68223f0bf5bd
> --- /dev/null
> +++ b/backport/compat/verification/mbedtls/sha256.h
> @@ -0,0 +1,140 @@
> +/**
> + * \file sha256.h
> + *
> + * \brief SHA-224 and SHA-256 cryptographic hash function
> + *
> + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
> + * SPDX-License-Identifier: GPL-2.0
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * This file is part of mbed TLS (https://tls.mbed.org)
> + */
> +#ifndef MBEDTLS_SHA256_H
> +#define MBEDTLS_SHA256_H
> +
> +#if !defined(MBEDTLS_CONFIG_FILE)
> +#include "config.h"
> +#else
> +#include MBEDTLS_CONFIG_FILE
> +#endif
> +
> +#if !defined(MBEDTLS_SHA256_ALT)
> +// Regular implementation
> +//
> +
> +#ifdef __cplusplus
> +extern "C" {
> +#endif
> +
> +/**
> + * \brief SHA-256 context structure
> + */
> +typedef struct
> +{
> + uint32_t total[2]; /*!< number of bytes processed */
> + uint32_t state[8]; /*!< intermediate digest state */
> + unsigned char buffer[64]; /*!< data block being processed */
> + int is224; /*!< 0 => SHA-256, else SHA-224 */
> +}
> +mbedtls_sha256_context;
> +
> +/**
> + * \brief Initialize SHA-256 context
> + *
> + * \param ctx SHA-256 context to be initialized
> + */
> +void mbedtls_sha256_init( mbedtls_sha256_context *ctx );
> +
> +/**
> + * \brief Clear SHA-256 context
> + *
> + * \param ctx SHA-256 context to be cleared
> + */
> +void mbedtls_sha256_free( mbedtls_sha256_context *ctx );
> +
> +/**
> + * \brief Clone (the state of) a SHA-256 context
> + *
> + * \param dst The destination context
> + * \param src The context to be cloned
> + */
> +void mbedtls_sha256_clone( mbedtls_sha256_context *dst,
> + const mbedtls_sha256_context *src );
> +
> +/**
> + * \brief SHA-256 context setup
> + *
> + * \param ctx context to be initialized
> + * \param is224 0 = use SHA256, 1 = use SHA224
> + */
> +void mbedtls_sha256_starts( mbedtls_sha256_context *ctx, int is224 );
> +
> +/**
> + * \brief SHA-256 process buffer
> + *
> + * \param ctx SHA-256 context
> + * \param input buffer holding the data
> + * \param ilen length of the input data
> + */
> +void mbedtls_sha256_update( mbedtls_sha256_context *ctx, const unsigned char *input,
> + size_t ilen );
> +
> +/**
> + * \brief SHA-256 final digest
> + *
> + * \param ctx SHA-256 context
> + * \param output SHA-224/256 checksum result
> + */
> +void mbedtls_sha256_finish( mbedtls_sha256_context *ctx, unsigned char output[32] );
> +
> +/* Internal use */
> +void mbedtls_sha256_process( mbedtls_sha256_context *ctx, const unsigned char data[64] );
> +
> +#ifdef __cplusplus
> +}
> +#endif
> +
> +#else /* MBEDTLS_SHA256_ALT */
> +#include "sha256_alt.h"
> +#endif /* MBEDTLS_SHA256_ALT */
> +
> +#ifdef __cplusplus
> +extern "C" {
> +#endif
> +
> +/**
> + * \brief Output = SHA-256( input buffer )
> + *
> + * \param input buffer holding the data
> + * \param ilen length of the input data
> + * \param output SHA-224/256 checksum result
> + * \param is224 0 = use SHA256, 1 = use SHA224
> + */
> +void mbedtls_sha256( const unsigned char *input, size_t ilen,
> + unsigned char output[32], int is224 );
> +
> +/**
> + * \brief Checkup routine
> + *
> + * \return 0 if successful, or 1 if the test failed
> + */
> +int mbedtls_sha256_self_test( int verbose );
> +
> +#ifdef __cplusplus
> +}
> +#endif
> +
> +#endif /* mbedtls_sha256.h */
> diff --git a/backport/compat/verification/md.c b/backport/compat/verification/md.c
> new file mode 100644
> index 000000000000..cff0753435ba
> --- /dev/null
> +++ b/backport/compat/verification/md.c
> @@ -0,0 +1,471 @@
> +/**
> + * \file mbedtls_md.c
> + *
> + * \brief Generic message digest wrapper for mbed TLS
> + *
> + * \author Adriaan de Jong <dejong@fox-it.com>
> + *
> + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
> + * SPDX-License-Identifier: GPL-2.0
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * This file is part of mbed TLS (https://tls.mbed.org)
> + */
> +
> +#if !defined(MBEDTLS_CONFIG_FILE)
> +#include "mbedtls/config.h"
> +#else
> +#include MBEDTLS_CONFIG_FILE
> +#endif
> +
> +#if defined(MBEDTLS_MD_C)
> +
> +#include "mbedtls/md.h"
> +#include "mbedtls/md_internal.h"
> +
> +#if defined(MBEDTLS_PLATFORM_C)
> +#include "mbedtls/platform.h"
> +#else
> +#include <stdlib.h>
> +#define mbedtls_calloc calloc
> +#define mbedtls_free free
> +#endif
> +
> +#if defined(MBEDTLS_FS_IO)
> +#include <stdio.h>
> +#endif
> +
> +/* Implementation that should never be optimized out by the compiler */
> +static void mbedtls_zeroize( void *v, size_t n ) {
> + volatile unsigned char *p = v; while( n-- ) *p++ = 0;
> +}
> +
> +/*
> + * Reminder: update profiles in x509_crt.c when adding a new hash!
> + */
> +static const int supported_digests[] = {
> +
> +#if defined(MBEDTLS_SHA512_C)
> + MBEDTLS_MD_SHA512,
> + MBEDTLS_MD_SHA384,
> +#endif
> +
> +#if defined(MBEDTLS_SHA256_C)
> + MBEDTLS_MD_SHA256,
> + MBEDTLS_MD_SHA224,
> +#endif
> +
> +#if defined(MBEDTLS_SHA1_C)
> + MBEDTLS_MD_SHA1,
> +#endif
> +
> +#if defined(MBEDTLS_RIPEMD160_C)
> + MBEDTLS_MD_RIPEMD160,
> +#endif
> +
> +#if defined(MBEDTLS_MD5_C)
> + MBEDTLS_MD_MD5,
> +#endif
> +
> +#if defined(MBEDTLS_MD4_C)
> + MBEDTLS_MD_MD4,
> +#endif
> +
> +#if defined(MBEDTLS_MD2_C)
> + MBEDTLS_MD_MD2,
> +#endif
> +
> + MBEDTLS_MD_NONE
> +};
> +
> +const int *mbedtls_md_list( void )
> +{
> + return( supported_digests );
> +}
> +
> +const mbedtls_md_info_t *mbedtls_md_info_from_string( const char *md_name )
> +{
> + if( NULL == md_name )
> + return( NULL );
> +
> + /* Get the appropriate digest information */
> +#if defined(MBEDTLS_MD2_C)
> + if( !strcmp( "MD2", md_name ) )
> + return mbedtls_md_info_from_type( MBEDTLS_MD_MD2 );
> +#endif
> +#if defined(MBEDTLS_MD4_C)
> + if( !strcmp( "MD4", md_name ) )
> + return mbedtls_md_info_from_type( MBEDTLS_MD_MD4 );
> +#endif
> +#if defined(MBEDTLS_MD5_C)
> + if( !strcmp( "MD5", md_name ) )
> + return mbedtls_md_info_from_type( MBEDTLS_MD_MD5 );
> +#endif
> +#if defined(MBEDTLS_RIPEMD160_C)
> + if( !strcmp( "RIPEMD160", md_name ) )
> + return mbedtls_md_info_from_type( MBEDTLS_MD_RIPEMD160 );
> +#endif
> +#if defined(MBEDTLS_SHA1_C)
> + if( !strcmp( "SHA1", md_name ) || !strcmp( "SHA", md_name ) )
> + return mbedtls_md_info_from_type( MBEDTLS_MD_SHA1 );
> +#endif
> +#if defined(MBEDTLS_SHA256_C)
> + if( !strcmp( "SHA224", md_name ) )
> + return mbedtls_md_info_from_type( MBEDTLS_MD_SHA224 );
> + if( !strcmp( "SHA256", md_name ) )
> + return mbedtls_md_info_from_type( MBEDTLS_MD_SHA256 );
> +#endif
> +#if defined(MBEDTLS_SHA512_C)
> + if( !strcmp( "SHA384", md_name ) )
> + return mbedtls_md_info_from_type( MBEDTLS_MD_SHA384 );
> + if( !strcmp( "SHA512", md_name ) )
> + return mbedtls_md_info_from_type( MBEDTLS_MD_SHA512 );
> +#endif
> + return( NULL );
> +}
> +
> +const mbedtls_md_info_t *mbedtls_md_info_from_type( mbedtls_md_type_t md_type )
> +{
> + switch( md_type )
> + {
> +#if defined(MBEDTLS_MD2_C)
> + case MBEDTLS_MD_MD2:
> + return( &mbedtls_md2_info );
> +#endif
> +#if defined(MBEDTLS_MD4_C)
> + case MBEDTLS_MD_MD4:
> + return( &mbedtls_md4_info );
> +#endif
> +#if defined(MBEDTLS_MD5_C)
> + case MBEDTLS_MD_MD5:
> + return( &mbedtls_md5_info );
> +#endif
> +#if defined(MBEDTLS_RIPEMD160_C)
> + case MBEDTLS_MD_RIPEMD160:
> + return( &mbedtls_ripemd160_info );
> +#endif
> +#if defined(MBEDTLS_SHA1_C)
> + case MBEDTLS_MD_SHA1:
> + return( &mbedtls_sha1_info );
> +#endif
> +#if defined(MBEDTLS_SHA256_C)
> + case MBEDTLS_MD_SHA224:
> + return( &mbedtls_sha224_info );
> + case MBEDTLS_MD_SHA256:
> + return( &mbedtls_sha256_info );
> +#endif
> +#if defined(MBEDTLS_SHA512_C)
> + case MBEDTLS_MD_SHA384:
> + return( &mbedtls_sha384_info );
> + case MBEDTLS_MD_SHA512:
> + return( &mbedtls_sha512_info );
> +#endif
> + default:
> + return( NULL );
> + }
> +}
> +
> +void mbedtls_md_init( mbedtls_md_context_t *ctx )
> +{
> + memset( ctx, 0, sizeof( mbedtls_md_context_t ) );
> +}
> +
> +void mbedtls_md_free( mbedtls_md_context_t *ctx )
> +{
> + if( ctx == NULL || ctx->md_info == NULL )
> + return;
> +
> + if( ctx->md_ctx != NULL )
> + ctx->md_info->ctx_free_func( ctx->md_ctx );
> +
> + if( ctx->hmac_ctx != NULL )
> + {
> + mbedtls_zeroize( ctx->hmac_ctx, 2 * ctx->md_info->block_size );
> + mbedtls_free( ctx->hmac_ctx );
> + }
> +
> + mbedtls_zeroize( ctx, sizeof( mbedtls_md_context_t ) );
> +}
> +
> +int mbedtls_md_clone( mbedtls_md_context_t *dst,
> + const mbedtls_md_context_t *src )
> +{
> + if( dst == NULL || dst->md_info == NULL ||
> + src == NULL || src->md_info == NULL ||
> + dst->md_info != src->md_info )
> + {
> + return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
> + }
> +
> + dst->md_info->clone_func( dst->md_ctx, src->md_ctx );
> +
> + return( 0 );
> +}
> +
> +#if ! defined(MBEDTLS_DEPRECATED_REMOVED)
> +int mbedtls_md_init_ctx( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info )
> +{
> + return mbedtls_md_setup( ctx, md_info, 1 );
> +}
> +#endif
> +
> +int mbedtls_md_setup( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info, int hmac )
> +{
> + if( md_info == NULL || ctx == NULL )
> + return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
> +
> + if( ( ctx->md_ctx = md_info->ctx_alloc_func() ) == NULL )
> + return( MBEDTLS_ERR_MD_ALLOC_FAILED );
> +
> + if( hmac != 0 )
> + {
> + ctx->hmac_ctx = mbedtls_calloc( 2, md_info->block_size );
> + if( ctx->hmac_ctx == NULL )
> + {
> + md_info->ctx_free_func( ctx->md_ctx );
> + return( MBEDTLS_ERR_MD_ALLOC_FAILED );
> + }
> + }
> +
> + ctx->md_info = md_info;
> +
> + return( 0 );
> +}
> +
> +int mbedtls_md_starts( mbedtls_md_context_t *ctx )
> +{
> + if( ctx == NULL || ctx->md_info == NULL )
> + return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
> +
> + ctx->md_info->starts_func( ctx->md_ctx );
> +
> + return( 0 );
> +}
> +
> +int mbedtls_md_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen )
> +{
> + if( ctx == NULL || ctx->md_info == NULL )
> + return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
> +
> + ctx->md_info->update_func( ctx->md_ctx, input, ilen );
> +
> + return( 0 );
> +}
> +
> +int mbedtls_md_finish( mbedtls_md_context_t *ctx, unsigned char *output )
> +{
> + if( ctx == NULL || ctx->md_info == NULL )
> + return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
> +
> + ctx->md_info->finish_func( ctx->md_ctx, output );
> +
> + return( 0 );
> +}
> +
> +int mbedtls_md( const mbedtls_md_info_t *md_info, const unsigned char *input, size_t ilen,
> + unsigned char *output )
> +{
> + if( md_info == NULL )
> + return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
> +
> + md_info->digest_func( input, ilen, output );
> +
> + return( 0 );
> +}
> +
> +#if defined(MBEDTLS_FS_IO)
> +int mbedtls_md_file( const mbedtls_md_info_t *md_info, const char *path, unsigned char *output )
> +{
> + int ret;
> + FILE *f;
> + size_t n;
> + mbedtls_md_context_t ctx;
> + unsigned char buf[1024];
> +
> + if( md_info == NULL )
> + return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
> +
> + if( ( f = fopen( path, "rb" ) ) == NULL )
> + return( MBEDTLS_ERR_MD_FILE_IO_ERROR );
> +
> + mbedtls_md_init( &ctx );
> +
> + if( ( ret = mbedtls_md_setup( &ctx, md_info, 0 ) ) != 0 )
> + goto cleanup;
> +
> + md_info->starts_func( ctx.md_ctx );
> +
> + while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
> + md_info->update_func( ctx.md_ctx, buf, n );
> +
> + if( ferror( f ) != 0 )
> + {
> + ret = MBEDTLS_ERR_MD_FILE_IO_ERROR;
> + goto cleanup;
> + }
> +
> + md_info->finish_func( ctx.md_ctx, output );
> +
> +cleanup:
> + fclose( f );
> + mbedtls_md_free( &ctx );
> +
> + return( ret );
> +}
> +#endif /* MBEDTLS_FS_IO */
> +
> +int mbedtls_md_hmac_starts( mbedtls_md_context_t *ctx, const unsigned char *key, size_t keylen )
> +{
> + unsigned char sum[MBEDTLS_MD_MAX_SIZE];
> + unsigned char *ipad, *opad;
> + size_t i;
> +
> + if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
> + return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
> +
> + if( keylen > (size_t) ctx->md_info->block_size )
> + {
> + ctx->md_info->starts_func( ctx->md_ctx );
> + ctx->md_info->update_func( ctx->md_ctx, key, keylen );
> + ctx->md_info->finish_func( ctx->md_ctx, sum );
> +
> + keylen = ctx->md_info->size;
> + key = sum;
> + }
> +
> + ipad = (unsigned char *) ctx->hmac_ctx;
> + opad = (unsigned char *) ctx->hmac_ctx + ctx->md_info->block_size;
> +
> + memset( ipad, 0x36, ctx->md_info->block_size );
> + memset( opad, 0x5C, ctx->md_info->block_size );
> +
> + for( i = 0; i < keylen; i++ )
> + {
> + ipad[i] = (unsigned char)( ipad[i] ^ key[i] );
> + opad[i] = (unsigned char)( opad[i] ^ key[i] );
> + }
> +
> + mbedtls_zeroize( sum, sizeof( sum ) );
> +
> + ctx->md_info->starts_func( ctx->md_ctx );
> + ctx->md_info->update_func( ctx->md_ctx, ipad, ctx->md_info->block_size );
> +
> + return( 0 );
> +}
> +
> +int mbedtls_md_hmac_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen )
> +{
> + if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
> + return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
> +
> + ctx->md_info->update_func( ctx->md_ctx, input, ilen );
> +
> + return( 0 );
> +}
> +
> +int mbedtls_md_hmac_finish( mbedtls_md_context_t *ctx, unsigned char *output )
> +{
> + unsigned char tmp[MBEDTLS_MD_MAX_SIZE];
> + unsigned char *opad;
> +
> + if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
> + return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
> +
> + opad = (unsigned char *) ctx->hmac_ctx + ctx->md_info->block_size;
> +
> + ctx->md_info->finish_func( ctx->md_ctx, tmp );
> + ctx->md_info->starts_func( ctx->md_ctx );
> + ctx->md_info->update_func( ctx->md_ctx, opad, ctx->md_info->block_size );
> + ctx->md_info->update_func( ctx->md_ctx, tmp, ctx->md_info->size );
> + ctx->md_info->finish_func( ctx->md_ctx, output );
> +
> + return( 0 );
> +}
> +
> +int mbedtls_md_hmac_reset( mbedtls_md_context_t *ctx )
> +{
> + unsigned char *ipad;
> +
> + if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
> + return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
> +
> + ipad = (unsigned char *) ctx->hmac_ctx;
> +
> + ctx->md_info->starts_func( ctx->md_ctx );
> + ctx->md_info->update_func( ctx->md_ctx, ipad, ctx->md_info->block_size );
> +
> + return( 0 );
> +}
> +
> +int mbedtls_md_hmac( const mbedtls_md_info_t *md_info, const unsigned char *key, size_t keylen,
> + const unsigned char *input, size_t ilen,
> + unsigned char *output )
> +{
> + mbedtls_md_context_t ctx;
> + int ret;
> +
> + if( md_info == NULL )
> + return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
> +
> + mbedtls_md_init( &ctx );
> +
> + if( ( ret = mbedtls_md_setup( &ctx, md_info, 1 ) ) != 0 )
> + return( ret );
> +
> + mbedtls_md_hmac_starts( &ctx, key, keylen );
> + mbedtls_md_hmac_update( &ctx, input, ilen );
> + mbedtls_md_hmac_finish( &ctx, output );
> +
> + mbedtls_md_free( &ctx );
> +
> + return( 0 );
> +}
> +
> +int mbedtls_md_process( mbedtls_md_context_t *ctx, const unsigned char *data )
> +{
> + if( ctx == NULL || ctx->md_info == NULL )
> + return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
> +
> + ctx->md_info->process_func( ctx->md_ctx, data );
> +
> + return( 0 );
> +}
> +
> +unsigned char mbedtls_md_get_size( const mbedtls_md_info_t *md_info )
> +{
> + if( md_info == NULL )
> + return( 0 );
> +
> + return md_info->size;
> +}
> +
> +mbedtls_md_type_t mbedtls_md_get_type( const mbedtls_md_info_t *md_info )
> +{
> + if( md_info == NULL )
> + return( MBEDTLS_MD_NONE );
> +
> + return md_info->type;
> +}
> +
> +const char *mbedtls_md_get_name( const mbedtls_md_info_t *md_info )
> +{
> + if( md_info == NULL )
> + return( NULL );
> +
> + return md_info->name;
> +}
> +
> +#endif /* MBEDTLS_MD_C */
> diff --git a/backport/compat/verification/md_wrap.c b/backport/compat/verification/md_wrap.c
> new file mode 100644
> index 000000000000..49c47d69d10a
> --- /dev/null
> +++ b/backport/compat/verification/md_wrap.c
> @@ -0,0 +1,577 @@
> +/**
> + * \file md_wrap.c
> + *
> + * \brief Generic message digest wrapper for mbed TLS
> + *
> + * \author Adriaan de Jong <dejong@fox-it.com>
> + *
> + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
> + * SPDX-License-Identifier: GPL-2.0
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * This file is part of mbed TLS (https://tls.mbed.org)
> + */
> +
> +#if !defined(MBEDTLS_CONFIG_FILE)
> +#include "mbedtls/config.h"
> +#else
> +#include MBEDTLS_CONFIG_FILE
> +#endif
> +
> +#if defined(MBEDTLS_MD_C)
> +
> +#include "mbedtls/md_internal.h"
> +
> +#if defined(MBEDTLS_MD2_C)
> +#include "mbedtls/md2.h"
> +#endif
> +
> +#if defined(MBEDTLS_MD4_C)
> +#include "mbedtls/md4.h"
> +#endif
> +
> +#if defined(MBEDTLS_MD5_C)
> +#include "mbedtls/md5.h"
> +#endif
> +
> +#if defined(MBEDTLS_RIPEMD160_C)
> +#include "mbedtls/ripemd160.h"
> +#endif
> +
> +#if defined(MBEDTLS_SHA1_C)
> +#include "mbedtls/sha1.h"
> +#endif
> +
> +#if defined(MBEDTLS_SHA256_C)
> +#include "mbedtls/sha256.h"
> +#endif
> +
> +#if defined(MBEDTLS_SHA512_C)
> +#include "mbedtls/sha512.h"
> +#endif
> +
> +#if defined(MBEDTLS_PLATFORM_C)
> +#include "mbedtls/platform.h"
> +#else
> +#include <stdlib.h>
> +#define mbedtls_calloc calloc
> +#define mbedtls_free free
> +#endif
> +
> +#if defined(MBEDTLS_MD2_C)
> +
> +static void md2_starts_wrap( void *ctx )
> +{
> + mbedtls_md2_starts( (mbedtls_md2_context *) ctx );
> +}
> +
> +static void md2_update_wrap( void *ctx, const unsigned char *input,
> + size_t ilen )
> +{
> + mbedtls_md2_update( (mbedtls_md2_context *) ctx, input, ilen );
> +}
> +
> +static void md2_finish_wrap( void *ctx, unsigned char *output )
> +{
> + mbedtls_md2_finish( (mbedtls_md2_context *) ctx, output );
> +}
> +
> +static void *md2_ctx_alloc( void )
> +{
> + void *ctx = mbedtls_calloc( 1, sizeof( mbedtls_md2_context ) );
> +
> + if( ctx != NULL )
> + mbedtls_md2_init( (mbedtls_md2_context *) ctx );
> +
> + return( ctx );
> +}
> +
> +static void md2_ctx_free( void *ctx )
> +{
> + mbedtls_md2_free( (mbedtls_md2_context *) ctx );
> + mbedtls_free( ctx );
> +}
> +
> +static void md2_clone_wrap( void *dst, const void *src )
> +{
> + mbedtls_md2_clone( (mbedtls_md2_context *) dst,
> + (const mbedtls_md2_context *) src );
> +}
> +
> +static void md2_process_wrap( void *ctx, const unsigned char *data )
> +{
> + ((void) data);
> +
> + mbedtls_md2_process( (mbedtls_md2_context *) ctx );
> +}
> +
> +const mbedtls_md_info_t mbedtls_md2_info = {
> + MBEDTLS_MD_MD2,
> + "MD2",
> + 16,
> + 16,
> + md2_starts_wrap,
> + md2_update_wrap,
> + md2_finish_wrap,
> + mbedtls_md2,
> + md2_ctx_alloc,
> + md2_ctx_free,
> + md2_clone_wrap,
> + md2_process_wrap,
> +};
> +
> +#endif /* MBEDTLS_MD2_C */
> +
> +#if defined(MBEDTLS_MD4_C)
> +
> +static void md4_starts_wrap( void *ctx )
> +{
> + mbedtls_md4_starts( (mbedtls_md4_context *) ctx );
> +}
> +
> +static void md4_update_wrap( void *ctx, const unsigned char *input,
> + size_t ilen )
> +{
> + mbedtls_md4_update( (mbedtls_md4_context *) ctx, input, ilen );
> +}
> +
> +static void md4_finish_wrap( void *ctx, unsigned char *output )
> +{
> + mbedtls_md4_finish( (mbedtls_md4_context *) ctx, output );
> +}
> +
> +static void *md4_ctx_alloc( void )
> +{
> + void *ctx = mbedtls_calloc( 1, sizeof( mbedtls_md4_context ) );
> +
> + if( ctx != NULL )
> + mbedtls_md4_init( (mbedtls_md4_context *) ctx );
> +
> + return( ctx );
> +}
> +
> +static void md4_ctx_free( void *ctx )
> +{
> + mbedtls_md4_free( (mbedtls_md4_context *) ctx );
> + mbedtls_free( ctx );
> +}
> +
> +static void md4_clone_wrap( void *dst, const void *src )
> +{
> + mbedtls_md4_clone( (mbedtls_md4_context *) dst,
> + (const mbedtls_md4_context *) src );
> +}
> +
> +static void md4_process_wrap( void *ctx, const unsigned char *data )
> +{
> + mbedtls_md4_process( (mbedtls_md4_context *) ctx, data );
> +}
> +
> +const mbedtls_md_info_t mbedtls_md4_info = {
> + MBEDTLS_MD_MD4,
> + "MD4",
> + 16,
> + 64,
> + md4_starts_wrap,
> + md4_update_wrap,
> + md4_finish_wrap,
> + mbedtls_md4,
> + md4_ctx_alloc,
> + md4_ctx_free,
> + md4_clone_wrap,
> + md4_process_wrap,
> +};
> +
> +#endif /* MBEDTLS_MD4_C */
> +
> +#if defined(MBEDTLS_MD5_C)
> +
> +static void md5_starts_wrap( void *ctx )
> +{
> + mbedtls_md5_starts( (mbedtls_md5_context *) ctx );
> +}
> +
> +static void md5_update_wrap( void *ctx, const unsigned char *input,
> + size_t ilen )
> +{
> + mbedtls_md5_update( (mbedtls_md5_context *) ctx, input, ilen );
> +}
> +
> +static void md5_finish_wrap( void *ctx, unsigned char *output )
> +{
> + mbedtls_md5_finish( (mbedtls_md5_context *) ctx, output );
> +}
> +
> +static void *md5_ctx_alloc( void )
> +{
> + void *ctx = mbedtls_calloc( 1, sizeof( mbedtls_md5_context ) );
> +
> + if( ctx != NULL )
> + mbedtls_md5_init( (mbedtls_md5_context *) ctx );
> +
> + return( ctx );
> +}
> +
> +static void md5_ctx_free( void *ctx )
> +{
> + mbedtls_md5_free( (mbedtls_md5_context *) ctx );
> + mbedtls_free( ctx );
> +}
> +
> +static void md5_clone_wrap( void *dst, const void *src )
> +{
> + mbedtls_md5_clone( (mbedtls_md5_context *) dst,
> + (const mbedtls_md5_context *) src );
> +}
> +
> +static void md5_process_wrap( void *ctx, const unsigned char *data )
> +{
> + mbedtls_md5_process( (mbedtls_md5_context *) ctx, data );
> +}
> +
> +const mbedtls_md_info_t mbedtls_md5_info = {
> + MBEDTLS_MD_MD5,
> + "MD5",
> + 16,
> + 64,
> + md5_starts_wrap,
> + md5_update_wrap,
> + md5_finish_wrap,
> + mbedtls_md5,
> + md5_ctx_alloc,
> + md5_ctx_free,
> + md5_clone_wrap,
> + md5_process_wrap,
> +};
> +
> +#endif /* MBEDTLS_MD5_C */
> +
> +#if defined(MBEDTLS_RIPEMD160_C)
> +
> +static void ripemd160_starts_wrap( void *ctx )
> +{
> + mbedtls_ripemd160_starts( (mbedtls_ripemd160_context *) ctx );
> +}
> +
> +static void ripemd160_update_wrap( void *ctx, const unsigned char *input,
> + size_t ilen )
> +{
> + mbedtls_ripemd160_update( (mbedtls_ripemd160_context *) ctx, input, ilen );
> +}
> +
> +static void ripemd160_finish_wrap( void *ctx, unsigned char *output )
> +{
> + mbedtls_ripemd160_finish( (mbedtls_ripemd160_context *) ctx, output );
> +}
> +
> +static void *ripemd160_ctx_alloc( void )
> +{
> + void *ctx = mbedtls_calloc( 1, sizeof( mbedtls_ripemd160_context ) );
> +
> + if( ctx != NULL )
> + mbedtls_ripemd160_init( (mbedtls_ripemd160_context *) ctx );
> +
> + return( ctx );
> +}
> +
> +static void ripemd160_ctx_free( void *ctx )
> +{
> + mbedtls_ripemd160_free( (mbedtls_ripemd160_context *) ctx );
> + mbedtls_free( ctx );
> +}
> +
> +static void ripemd160_clone_wrap( void *dst, const void *src )
> +{
> + mbedtls_ripemd160_clone( (mbedtls_ripemd160_context *) dst,
> + (const mbedtls_ripemd160_context *) src );
> +}
> +
> +static void ripemd160_process_wrap( void *ctx, const unsigned char *data )
> +{
> + mbedtls_ripemd160_process( (mbedtls_ripemd160_context *) ctx, data );
> +}
> +
> +const mbedtls_md_info_t mbedtls_ripemd160_info = {
> + MBEDTLS_MD_RIPEMD160,
> + "RIPEMD160",
> + 20,
> + 64,
> + ripemd160_starts_wrap,
> + ripemd160_update_wrap,
> + ripemd160_finish_wrap,
> + mbedtls_ripemd160,
> + ripemd160_ctx_alloc,
> + ripemd160_ctx_free,
> + ripemd160_clone_wrap,
> + ripemd160_process_wrap,
> +};
> +
> +#endif /* MBEDTLS_RIPEMD160_C */
> +
> +#if defined(MBEDTLS_SHA1_C)
> +
> +static void sha1_starts_wrap( void *ctx )
> +{
> + mbedtls_sha1_starts( (mbedtls_sha1_context *) ctx );
> +}
> +
> +static void sha1_update_wrap( void *ctx, const unsigned char *input,
> + size_t ilen )
> +{
> + mbedtls_sha1_update( (mbedtls_sha1_context *) ctx, input, ilen );
> +}
> +
> +static void sha1_finish_wrap( void *ctx, unsigned char *output )
> +{
> + mbedtls_sha1_finish( (mbedtls_sha1_context *) ctx, output );
> +}
> +
> +static void *sha1_ctx_alloc( void )
> +{
> + void *ctx = mbedtls_calloc( 1, sizeof( mbedtls_sha1_context ) );
> +
> + if( ctx != NULL )
> + mbedtls_sha1_init( (mbedtls_sha1_context *) ctx );
> +
> + return( ctx );
> +}
> +
> +static void sha1_clone_wrap( void *dst, const void *src )
> +{
> + mbedtls_sha1_clone( (mbedtls_sha1_context *) dst,
> + (const mbedtls_sha1_context *) src );
> +}
> +
> +static void sha1_ctx_free( void *ctx )
> +{
> + mbedtls_sha1_free( (mbedtls_sha1_context *) ctx );
> + mbedtls_free( ctx );
> +}
> +
> +static void sha1_process_wrap( void *ctx, const unsigned char *data )
> +{
> + mbedtls_sha1_process( (mbedtls_sha1_context *) ctx, data );
> +}
> +
> +const mbedtls_md_info_t mbedtls_sha1_info = {
> + MBEDTLS_MD_SHA1,
> + "SHA1",
> + 20,
> + 64,
> + sha1_starts_wrap,
> + sha1_update_wrap,
> + sha1_finish_wrap,
> + mbedtls_sha1,
> + sha1_ctx_alloc,
> + sha1_ctx_free,
> + sha1_clone_wrap,
> + sha1_process_wrap,
> +};
> +
> +#endif /* MBEDTLS_SHA1_C */
> +
> +/*
> + * Wrappers for generic message digests
> + */
> +#if defined(MBEDTLS_SHA256_C)
> +
> +static void sha224_starts_wrap( void *ctx )
> +{
> + mbedtls_sha256_starts( (mbedtls_sha256_context *) ctx, 1 );
> +}
> +
> +static void sha224_update_wrap( void *ctx, const unsigned char *input,
> + size_t ilen )
> +{
> + mbedtls_sha256_update( (mbedtls_sha256_context *) ctx, input, ilen );
> +}
> +
> +static void sha224_finish_wrap( void *ctx, unsigned char *output )
> +{
> + mbedtls_sha256_finish( (mbedtls_sha256_context *) ctx, output );
> +}
> +
> +static void sha224_wrap( const unsigned char *input, size_t ilen,
> + unsigned char *output )
> +{
> + mbedtls_sha256( input, ilen, output, 1 );
> +}
> +
> +static void *sha224_ctx_alloc( void )
> +{
> + void *ctx = mbedtls_calloc( 1, sizeof( mbedtls_sha256_context ) );
> +
> + if( ctx != NULL )
> + mbedtls_sha256_init( (mbedtls_sha256_context *) ctx );
> +
> + return( ctx );
> +}
> +
> +static void sha224_ctx_free( void *ctx )
> +{
> + mbedtls_sha256_free( (mbedtls_sha256_context *) ctx );
> + mbedtls_free( ctx );
> +}
> +
> +static void sha224_clone_wrap( void *dst, const void *src )
> +{
> + mbedtls_sha256_clone( (mbedtls_sha256_context *) dst,
> + (const mbedtls_sha256_context *) src );
> +}
> +
> +static void sha224_process_wrap( void *ctx, const unsigned char *data )
> +{
> + mbedtls_sha256_process( (mbedtls_sha256_context *) ctx, data );
> +}
> +
> +const mbedtls_md_info_t mbedtls_sha224_info = {
> + MBEDTLS_MD_SHA224,
> + "SHA224",
> + 28,
> + 64,
> + sha224_starts_wrap,
> + sha224_update_wrap,
> + sha224_finish_wrap,
> + sha224_wrap,
> + sha224_ctx_alloc,
> + sha224_ctx_free,
> + sha224_clone_wrap,
> + sha224_process_wrap,
> +};
> +
> +static void sha256_starts_wrap( void *ctx )
> +{
> + mbedtls_sha256_starts( (mbedtls_sha256_context *) ctx, 0 );
> +}
> +
> +static void sha256_wrap( const unsigned char *input, size_t ilen,
> + unsigned char *output )
> +{
> + mbedtls_sha256( input, ilen, output, 0 );
> +}
> +
> +const mbedtls_md_info_t mbedtls_sha256_info = {
> + MBEDTLS_MD_SHA256,
> + "SHA256",
> + 32,
> + 64,
> + sha256_starts_wrap,
> + sha224_update_wrap,
> + sha224_finish_wrap,
> + sha256_wrap,
> + sha224_ctx_alloc,
> + sha224_ctx_free,
> + sha224_clone_wrap,
> + sha224_process_wrap,
> +};
> +
> +#endif /* MBEDTLS_SHA256_C */
> +
> +#if defined(MBEDTLS_SHA512_C)
> +
> +static void sha384_starts_wrap( void *ctx )
> +{
> + mbedtls_sha512_starts( (mbedtls_sha512_context *) ctx, 1 );
> +}
> +
> +static void sha384_update_wrap( void *ctx, const unsigned char *input,
> + size_t ilen )
> +{
> + mbedtls_sha512_update( (mbedtls_sha512_context *) ctx, input, ilen );
> +}
> +
> +static void sha384_finish_wrap( void *ctx, unsigned char *output )
> +{
> + mbedtls_sha512_finish( (mbedtls_sha512_context *) ctx, output );
> +}
> +
> +static void sha384_wrap( const unsigned char *input, size_t ilen,
> + unsigned char *output )
> +{
> + mbedtls_sha512( input, ilen, output, 1 );
> +}
> +
> +static void *sha384_ctx_alloc( void )
> +{
> + void *ctx = mbedtls_calloc( 1, sizeof( mbedtls_sha512_context ) );
> +
> + if( ctx != NULL )
> + mbedtls_sha512_init( (mbedtls_sha512_context *) ctx );
> +
> + return( ctx );
> +}
> +
> +static void sha384_ctx_free( void *ctx )
> +{
> + mbedtls_sha512_free( (mbedtls_sha512_context *) ctx );
> + mbedtls_free( ctx );
> +}
> +
> +static void sha384_clone_wrap( void *dst, const void *src )
> +{
> + mbedtls_sha512_clone( (mbedtls_sha512_context *) dst,
> + (const mbedtls_sha512_context *) src );
> +}
> +
> +static void sha384_process_wrap( void *ctx, const unsigned char *data )
> +{
> + mbedtls_sha512_process( (mbedtls_sha512_context *) ctx, data );
> +}
> +
> +const mbedtls_md_info_t mbedtls_sha384_info = {
> + MBEDTLS_MD_SHA384,
> + "SHA384",
> + 48,
> + 128,
> + sha384_starts_wrap,
> + sha384_update_wrap,
> + sha384_finish_wrap,
> + sha384_wrap,
> + sha384_ctx_alloc,
> + sha384_ctx_free,
> + sha384_clone_wrap,
> + sha384_process_wrap,
> +};
> +
> +static void sha512_starts_wrap( void *ctx )
> +{
> + mbedtls_sha512_starts( (mbedtls_sha512_context *) ctx, 0 );
> +}
> +
> +static void sha512_wrap( const unsigned char *input, size_t ilen,
> + unsigned char *output )
> +{
> + mbedtls_sha512( input, ilen, output, 0 );
> +}
> +
> +const mbedtls_md_info_t mbedtls_sha512_info = {
> + MBEDTLS_MD_SHA512,
> + "SHA512",
> + 64,
> + 128,
> + sha512_starts_wrap,
> + sha384_update_wrap,
> + sha384_finish_wrap,
> + sha512_wrap,
> + sha384_ctx_alloc,
> + sha384_ctx_free,
> + sha384_clone_wrap,
> + sha384_process_wrap,
> +};
> +
> +#endif /* MBEDTLS_SHA512_C */
> +
> +#endif /* MBEDTLS_MD_C */
> diff --git a/backport/compat/verification/oid.c b/backport/compat/verification/oid.c
> new file mode 100644
> index 000000000000..647536902a09
> --- /dev/null
> +++ b/backport/compat/verification/oid.c
> @@ -0,0 +1,709 @@
> +/**
> + * \file oid.c
> + *
> + * \brief Object Identifier (OID) database
> + *
> + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
> + * SPDX-License-Identifier: GPL-2.0
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * This file is part of mbed TLS (https://tls.mbed.org)
> + */
> +
> +#if !defined(MBEDTLS_CONFIG_FILE)
> +#include "mbedtls/config.h"
> +#else
> +#include MBEDTLS_CONFIG_FILE
> +#endif
> +
> +#if defined(MBEDTLS_OID_C)
> +
> +#include "mbedtls/oid.h"
> +#include "mbedtls/rsa.h"
> +
> +#if defined(MBEDTLS_PLATFORM_C)
> +#include "mbedtls/platform.h"
> +#else
> +#define mbedtls_snprintf snprintf
> +#endif
> +
> +#if defined(MBEDTLS_X509_USE_C) || defined(MBEDTLS_X509_CREATE_C)
> +#include "mbedtls/x509.h"
> +#endif
> +
> +/*
> + * Macro to automatically add the size of #define'd OIDs
> + */
> +#define ADD_LEN(s) s, MBEDTLS_OID_SIZE(s)
> +
> +/*
> + * Macro to generate an internal function for oid_XXX_from_asn1() (used by
> + * the other functions)
> + */
> +#define FN_OID_TYPED_FROM_ASN1( TYPE_T, NAME, LIST ) \
> +static const TYPE_T * oid_ ## NAME ## _from_asn1( const mbedtls_asn1_buf *oid ) \
> +{ \
> + const TYPE_T *p = LIST; \
> + const mbedtls_oid_descriptor_t *cur = (const mbedtls_oid_descriptor_t *) p; \
> + if( p == NULL || oid == NULL ) return( NULL ); \
> + while( cur->asn1 != NULL ) { \
> + if( cur->asn1_len == oid->len && \
> + memcmp( cur->asn1, oid->p, oid->len ) == 0 ) { \
> + return( p ); \
> + } \
> + p++; \
> + cur = (const mbedtls_oid_descriptor_t *) p; \
> + } \
> + return( NULL ); \
> +}
> +
> +/*
> + * Macro to generate a function for retrieving a single attribute from the
> + * descriptor of an mbedtls_oid_descriptor_t wrapper.
> + */
> +#define FN_OID_GET_DESCRIPTOR_ATTR1(FN_NAME, TYPE_T, TYPE_NAME, ATTR1_TYPE, ATTR1) \
> +int FN_NAME( const mbedtls_asn1_buf *oid, ATTR1_TYPE * ATTR1 ) \
> +{ \
> + const TYPE_T *data = oid_ ## TYPE_NAME ## _from_asn1( oid ); \
> + if( data == NULL ) return( MBEDTLS_ERR_OID_NOT_FOUND ); \
> + *ATTR1 = data->descriptor.ATTR1; \
> + return( 0 ); \
> +}
> +
> +/*
> + * Macro to generate a function for retrieving a single attribute from an
> + * mbedtls_oid_descriptor_t wrapper.
> + */
> +#define FN_OID_GET_ATTR1(FN_NAME, TYPE_T, TYPE_NAME, ATTR1_TYPE, ATTR1) \
> +int FN_NAME( const mbedtls_asn1_buf *oid, ATTR1_TYPE * ATTR1 ) \
> +{ \
> + const TYPE_T *data = oid_ ## TYPE_NAME ## _from_asn1( oid ); \
> + if( data == NULL ) return( MBEDTLS_ERR_OID_NOT_FOUND ); \
> + *ATTR1 = data->ATTR1; \
> + return( 0 ); \
> +}
> +
> +/*
> + * Macro to generate a function for retrieving two attributes from an
> + * mbedtls_oid_descriptor_t wrapper.
> + */
> +#define FN_OID_GET_ATTR2(FN_NAME, TYPE_T, TYPE_NAME, ATTR1_TYPE, ATTR1, \
> + ATTR2_TYPE, ATTR2) \
> +int FN_NAME( const mbedtls_asn1_buf *oid, ATTR1_TYPE * ATTR1, ATTR2_TYPE * ATTR2 ) \
> +{ \
> + const TYPE_T *data = oid_ ## TYPE_NAME ## _from_asn1( oid ); \
> + if( data == NULL ) return( MBEDTLS_ERR_OID_NOT_FOUND ); \
> + *ATTR1 = data->ATTR1; \
> + *ATTR2 = data->ATTR2; \
> + return( 0 ); \
> +}
> +
> +/*
> + * Macro to generate a function for retrieving the OID based on a single
> + * attribute from a mbedtls_oid_descriptor_t wrapper.
> + */
> +#define FN_OID_GET_OID_BY_ATTR1(FN_NAME, TYPE_T, LIST, ATTR1_TYPE, ATTR1) \
> +int FN_NAME( ATTR1_TYPE ATTR1, const char **oid, size_t *olen ) \
> +{ \
> + const TYPE_T *cur = LIST; \
> + while( cur->descriptor.asn1 != NULL ) { \
> + if( cur->ATTR1 == ATTR1 ) { \
> + *oid = cur->descriptor.asn1; \
> + *olen = cur->descriptor.asn1_len; \
> + return( 0 ); \
> + } \
> + cur++; \
> + } \
> + return( MBEDTLS_ERR_OID_NOT_FOUND ); \
> +}
> +
> +/*
> + * Macro to generate a function for retrieving the OID based on two
> + * attributes from a mbedtls_oid_descriptor_t wrapper.
> + */
> +#define FN_OID_GET_OID_BY_ATTR2(FN_NAME, TYPE_T, LIST, ATTR1_TYPE, ATTR1, \
> + ATTR2_TYPE, ATTR2) \
> +int FN_NAME( ATTR1_TYPE ATTR1, ATTR2_TYPE ATTR2, const char **oid , \
> + size_t *olen ) \
> +{ \
> + const TYPE_T *cur = LIST; \
> + while( cur->descriptor.asn1 != NULL ) { \
> + if( cur->ATTR1 == ATTR1 && cur->ATTR2 == ATTR2 ) { \
> + *oid = cur->descriptor.asn1; \
> + *olen = cur->descriptor.asn1_len; \
> + return( 0 ); \
> + } \
> + cur++; \
> + } \
> + return( MBEDTLS_ERR_OID_NOT_FOUND ); \
> +}
> +
> +#if defined(MBEDTLS_X509_USE_C) || defined(MBEDTLS_X509_CREATE_C)
> +/*
> + * For X520 attribute types
> + */
> +typedef struct {
> + mbedtls_oid_descriptor_t descriptor;
> + const char *short_name;
> +} oid_x520_attr_t;
> +
> +static const oid_x520_attr_t oid_x520_attr_type[] =
> +{
> + {
> + { ADD_LEN( MBEDTLS_OID_AT_CN ), "id-at-commonName", "Common Name" },
> + "CN",
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_AT_COUNTRY ), "id-at-countryName", "Country" },
> + "C",
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_AT_LOCALITY ), "id-at-locality", "Locality" },
> + "L",
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_AT_STATE ), "id-at-state", "State" },
> + "ST",
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_AT_ORGANIZATION ),"id-at-organizationName", "Organization" },
> + "O",
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_AT_ORG_UNIT ), "id-at-organizationalUnitName", "Org Unit" },
> + "OU",
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_PKCS9_EMAIL ), "emailAddress", "E-mail address" },
> + "emailAddress",
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_AT_SERIAL_NUMBER ),"id-at-serialNumber", "Serial number" },
> + "serialNumber",
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_AT_POSTAL_ADDRESS ),"id-at-postalAddress", "Postal address" },
> + "postalAddress",
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_AT_POSTAL_CODE ), "id-at-postalCode", "Postal code" },
> + "postalCode",
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_AT_SUR_NAME ), "id-at-surName", "Surname" },
> + "SN",
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_AT_GIVEN_NAME ), "id-at-givenName", "Given name" },
> + "GN",
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_AT_INITIALS ), "id-at-initials", "Initials" },
> + "initials",
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_AT_GENERATION_QUALIFIER ), "id-at-generationQualifier", "Generation qualifier" },
> + "generationQualifier",
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_AT_TITLE ), "id-at-title", "Title" },
> + "title",
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_AT_DN_QUALIFIER ),"id-at-dnQualifier", "Distinguished Name qualifier" },
> + "dnQualifier",
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_AT_PSEUDONYM ), "id-at-pseudonym", "Pseudonym" },
> + "pseudonym",
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_DOMAIN_COMPONENT ), "id-domainComponent", "Domain component" },
> + "DC",
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_AT_UNIQUE_IDENTIFIER ), "id-at-uniqueIdentifier", "Unique Identifier" },
> + "uniqueIdentifier",
> + },
> + {
> + { NULL, 0, NULL, NULL },
> + NULL,
> + }
> +};
> +
> +FN_OID_TYPED_FROM_ASN1(oid_x520_attr_t, x520_attr, oid_x520_attr_type)
> +FN_OID_GET_ATTR1(mbedtls_oid_get_attr_short_name, oid_x520_attr_t, x520_attr, const char *, short_name)
> +
> +/*
> + * For X509 extensions
> + */
> +typedef struct {
> + mbedtls_oid_descriptor_t descriptor;
> + int ext_type;
> +} oid_x509_ext_t;
> +
> +static const oid_x509_ext_t oid_x509_ext[] =
> +{
> + {
> + { ADD_LEN( MBEDTLS_OID_BASIC_CONSTRAINTS ), "id-ce-basicConstraints", "Basic Constraints" },
> + MBEDTLS_X509_EXT_BASIC_CONSTRAINTS,
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_KEY_USAGE ), "id-ce-keyUsage", "Key Usage" },
> + MBEDTLS_X509_EXT_KEY_USAGE,
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_EXTENDED_KEY_USAGE ), "id-ce-extKeyUsage", "Extended Key Usage" },
> + MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE,
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_SUBJECT_ALT_NAME ), "id-ce-subjectAltName", "Subject Alt Name" },
> + MBEDTLS_X509_EXT_SUBJECT_ALT_NAME,
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_NS_CERT_TYPE ), "id-netscape-certtype", "Netscape Certificate Type" },
> + MBEDTLS_X509_EXT_NS_CERT_TYPE,
> + },
> + {
> + { NULL, 0, NULL, NULL },
> + 0,
> + },
> +};
> +
> +FN_OID_TYPED_FROM_ASN1(oid_x509_ext_t, x509_ext, oid_x509_ext)
> +FN_OID_GET_ATTR1(mbedtls_oid_get_x509_ext_type, oid_x509_ext_t, x509_ext, int, ext_type)
> +
> +static const mbedtls_oid_descriptor_t oid_ext_key_usage[] =
> +{
> + { ADD_LEN( MBEDTLS_OID_SERVER_AUTH ), "id-kp-serverAuth", "TLS Web Server Authentication" },
> + { ADD_LEN( MBEDTLS_OID_CLIENT_AUTH ), "id-kp-clientAuth", "TLS Web Client Authentication" },
> + { ADD_LEN( MBEDTLS_OID_CODE_SIGNING ), "id-kp-codeSigning", "Code Signing" },
> + { ADD_LEN( MBEDTLS_OID_EMAIL_PROTECTION ), "id-kp-emailProtection", "E-mail Protection" },
> + { ADD_LEN( MBEDTLS_OID_TIME_STAMPING ), "id-kp-timeStamping", "Time Stamping" },
> + { ADD_LEN( MBEDTLS_OID_OCSP_SIGNING ), "id-kp-OCSPSigning", "OCSP Signing" },
> + { NULL, 0, NULL, NULL },
> +};
> +
> +FN_OID_TYPED_FROM_ASN1(mbedtls_oid_descriptor_t, ext_key_usage, oid_ext_key_usage)
> +FN_OID_GET_ATTR1(mbedtls_oid_get_extended_key_usage, mbedtls_oid_descriptor_t, ext_key_usage, const char *, description)
> +#endif /* MBEDTLS_X509_USE_C || MBEDTLS_X509_CREATE_C */
> +
> +#if defined(MBEDTLS_MD_C)
> +/*
> + * For SignatureAlgorithmIdentifier
> + */
> +typedef struct {
> + mbedtls_oid_descriptor_t descriptor;
> + mbedtls_md_type_t md_alg;
> + mbedtls_pk_type_t pk_alg;
> +} oid_sig_alg_t;
> +
> +static const oid_sig_alg_t oid_sig_alg[] =
> +{
> +#if defined(MBEDTLS_RSA_C)
> +#if defined(MBEDTLS_MD2_C)
> + {
> + { ADD_LEN( MBEDTLS_OID_PKCS1_MD2 ), "md2WithRSAEncryption", "RSA with MD2" },
> + MBEDTLS_MD_MD2, MBEDTLS_PK_RSA,
> + },
> +#endif /* MBEDTLS_MD2_C */
> +#if defined(MBEDTLS_MD4_C)
> + {
> + { ADD_LEN( MBEDTLS_OID_PKCS1_MD4 ), "md4WithRSAEncryption", "RSA with MD4" },
> + MBEDTLS_MD_MD4, MBEDTLS_PK_RSA,
> + },
> +#endif /* MBEDTLS_MD4_C */
> +#if defined(MBEDTLS_MD5_C)
> + {
> + { ADD_LEN( MBEDTLS_OID_PKCS1_MD5 ), "md5WithRSAEncryption", "RSA with MD5" },
> + MBEDTLS_MD_MD5, MBEDTLS_PK_RSA,
> + },
> +#endif /* MBEDTLS_MD5_C */
> +#if defined(MBEDTLS_SHA1_C)
> + {
> + { ADD_LEN( MBEDTLS_OID_PKCS1_SHA1 ), "sha-1WithRSAEncryption", "RSA with SHA1" },
> + MBEDTLS_MD_SHA1, MBEDTLS_PK_RSA,
> + },
> +#endif /* MBEDTLS_SHA1_C */
> +#if defined(MBEDTLS_SHA256_C)
> + {
> + { ADD_LEN( MBEDTLS_OID_PKCS1_SHA224 ), "sha224WithRSAEncryption", "RSA with SHA-224" },
> + MBEDTLS_MD_SHA224, MBEDTLS_PK_RSA,
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_PKCS1_SHA256 ), "sha256WithRSAEncryption", "RSA with SHA-256" },
> + MBEDTLS_MD_SHA256, MBEDTLS_PK_RSA,
> + },
> +#endif /* MBEDTLS_SHA256_C */
> +#if defined(MBEDTLS_SHA512_C)
> + {
> + { ADD_LEN( MBEDTLS_OID_PKCS1_SHA384 ), "sha384WithRSAEncryption", "RSA with SHA-384" },
> + MBEDTLS_MD_SHA384, MBEDTLS_PK_RSA,
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_PKCS1_SHA512 ), "sha512WithRSAEncryption", "RSA with SHA-512" },
> + MBEDTLS_MD_SHA512, MBEDTLS_PK_RSA,
> + },
> +#endif /* MBEDTLS_SHA512_C */
> +#if defined(MBEDTLS_SHA1_C)
> + {
> + { ADD_LEN( MBEDTLS_OID_RSA_SHA_OBS ), "sha-1WithRSAEncryption", "RSA with SHA1" },
> + MBEDTLS_MD_SHA1, MBEDTLS_PK_RSA,
> + },
> +#endif /* MBEDTLS_SHA1_C */
> +#endif /* MBEDTLS_RSA_C */
> +#if defined(MBEDTLS_ECDSA_C)
> +#if defined(MBEDTLS_SHA1_C)
> + {
> + { ADD_LEN( MBEDTLS_OID_ECDSA_SHA1 ), "ecdsa-with-SHA1", "ECDSA with SHA1" },
> + MBEDTLS_MD_SHA1, MBEDTLS_PK_ECDSA,
> + },
> +#endif /* MBEDTLS_SHA1_C */
> +#if defined(MBEDTLS_SHA256_C)
> + {
> + { ADD_LEN( MBEDTLS_OID_ECDSA_SHA224 ), "ecdsa-with-SHA224", "ECDSA with SHA224" },
> + MBEDTLS_MD_SHA224, MBEDTLS_PK_ECDSA,
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_ECDSA_SHA256 ), "ecdsa-with-SHA256", "ECDSA with SHA256" },
> + MBEDTLS_MD_SHA256, MBEDTLS_PK_ECDSA,
> + },
> +#endif /* MBEDTLS_SHA256_C */
> +#if defined(MBEDTLS_SHA512_C)
> + {
> + { ADD_LEN( MBEDTLS_OID_ECDSA_SHA384 ), "ecdsa-with-SHA384", "ECDSA with SHA384" },
> + MBEDTLS_MD_SHA384, MBEDTLS_PK_ECDSA,
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_ECDSA_SHA512 ), "ecdsa-with-SHA512", "ECDSA with SHA512" },
> + MBEDTLS_MD_SHA512, MBEDTLS_PK_ECDSA,
> + },
> +#endif /* MBEDTLS_SHA512_C */
> +#endif /* MBEDTLS_ECDSA_C */
> +#if defined(MBEDTLS_RSA_C)
> + {
> + { ADD_LEN( MBEDTLS_OID_RSASSA_PSS ), "RSASSA-PSS", "RSASSA-PSS" },
> + MBEDTLS_MD_NONE, MBEDTLS_PK_RSASSA_PSS,
> + },
> +#endif /* MBEDTLS_RSA_C */
> + {
> + { NULL, 0, NULL, NULL },
> + MBEDTLS_MD_NONE, MBEDTLS_PK_NONE,
> + },
> +};
> +
> +FN_OID_TYPED_FROM_ASN1(oid_sig_alg_t, sig_alg, oid_sig_alg)
> +FN_OID_GET_DESCRIPTOR_ATTR1(mbedtls_oid_get_sig_alg_desc, oid_sig_alg_t, sig_alg, const char *, description)
> +FN_OID_GET_ATTR2(mbedtls_oid_get_sig_alg, oid_sig_alg_t, sig_alg, mbedtls_md_type_t, md_alg, mbedtls_pk_type_t, pk_alg)
> +FN_OID_GET_OID_BY_ATTR2(mbedtls_oid_get_oid_by_sig_alg, oid_sig_alg_t, oid_sig_alg, mbedtls_pk_type_t, pk_alg, mbedtls_md_type_t, md_alg)
> +#endif /* MBEDTLS_MD_C */
> +
> +/*
> + * For PublicKeyInfo (PKCS1, RFC 5480)
> + */
> +typedef struct {
> + mbedtls_oid_descriptor_t descriptor;
> + mbedtls_pk_type_t pk_alg;
> +} oid_pk_alg_t;
> +
> +static const oid_pk_alg_t oid_pk_alg[] =
> +{
> + {
> + { ADD_LEN( MBEDTLS_OID_PKCS1_RSA ), "rsaEncryption", "RSA" },
> + MBEDTLS_PK_RSA,
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_EC_ALG_UNRESTRICTED ), "id-ecPublicKey", "Generic EC key" },
> + MBEDTLS_PK_ECKEY,
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_EC_ALG_ECDH ), "id-ecDH", "EC key for ECDH" },
> + MBEDTLS_PK_ECKEY_DH,
> + },
> + {
> + { NULL, 0, NULL, NULL },
> + MBEDTLS_PK_NONE,
> + },
> +};
> +
> +FN_OID_TYPED_FROM_ASN1(oid_pk_alg_t, pk_alg, oid_pk_alg)
> +FN_OID_GET_ATTR1(mbedtls_oid_get_pk_alg, oid_pk_alg_t, pk_alg, mbedtls_pk_type_t, pk_alg)
> +FN_OID_GET_OID_BY_ATTR1(mbedtls_oid_get_oid_by_pk_alg, oid_pk_alg_t, oid_pk_alg, mbedtls_pk_type_t, pk_alg)
> +
> +#if defined(MBEDTLS_ECP_C)
> +/*
> + * For namedCurve (RFC 5480)
> + */
> +typedef struct {
> + mbedtls_oid_descriptor_t descriptor;
> + mbedtls_ecp_group_id grp_id;
> +} oid_ecp_grp_t;
> +
> +static const oid_ecp_grp_t oid_ecp_grp[] =
> +{
> +#if defined(MBEDTLS_ECP_DP_SECP192R1_ENABLED)
> + {
> + { ADD_LEN( MBEDTLS_OID_EC_GRP_SECP192R1 ), "secp192r1", "secp192r1" },
> + MBEDTLS_ECP_DP_SECP192R1,
> + },
> +#endif /* MBEDTLS_ECP_DP_SECP192R1_ENABLED */
> +#if defined(MBEDTLS_ECP_DP_SECP224R1_ENABLED)
> + {
> + { ADD_LEN( MBEDTLS_OID_EC_GRP_SECP224R1 ), "secp224r1", "secp224r1" },
> + MBEDTLS_ECP_DP_SECP224R1,
> + },
> +#endif /* MBEDTLS_ECP_DP_SECP224R1_ENABLED */
> +#if defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED)
> + {
> + { ADD_LEN( MBEDTLS_OID_EC_GRP_SECP256R1 ), "secp256r1", "secp256r1" },
> + MBEDTLS_ECP_DP_SECP256R1,
> + },
> +#endif /* MBEDTLS_ECP_DP_SECP256R1_ENABLED */
> +#if defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED)
> + {
> + { ADD_LEN( MBEDTLS_OID_EC_GRP_SECP384R1 ), "secp384r1", "secp384r1" },
> + MBEDTLS_ECP_DP_SECP384R1,
> + },
> +#endif /* MBEDTLS_ECP_DP_SECP384R1_ENABLED */
> +#if defined(MBEDTLS_ECP_DP_SECP521R1_ENABLED)
> + {
> + { ADD_LEN( MBEDTLS_OID_EC_GRP_SECP521R1 ), "secp521r1", "secp521r1" },
> + MBEDTLS_ECP_DP_SECP521R1,
> + },
> +#endif /* MBEDTLS_ECP_DP_SECP521R1_ENABLED */
> +#if defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED)
> + {
> + { ADD_LEN( MBEDTLS_OID_EC_GRP_SECP192K1 ), "secp192k1", "secp192k1" },
> + MBEDTLS_ECP_DP_SECP192K1,
> + },
> +#endif /* MBEDTLS_ECP_DP_SECP192K1_ENABLED */
> +#if defined(MBEDTLS_ECP_DP_SECP224K1_ENABLED)
> + {
> + { ADD_LEN( MBEDTLS_OID_EC_GRP_SECP224K1 ), "secp224k1", "secp224k1" },
> + MBEDTLS_ECP_DP_SECP224K1,
> + },
> +#endif /* MBEDTLS_ECP_DP_SECP224K1_ENABLED */
> +#if defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED)
> + {
> + { ADD_LEN( MBEDTLS_OID_EC_GRP_SECP256K1 ), "secp256k1", "secp256k1" },
> + MBEDTLS_ECP_DP_SECP256K1,
> + },
> +#endif /* MBEDTLS_ECP_DP_SECP256K1_ENABLED */
> +#if defined(MBEDTLS_ECP_DP_BP256R1_ENABLED)
> + {
> + { ADD_LEN( MBEDTLS_OID_EC_GRP_BP256R1 ), "brainpoolP256r1","brainpool256r1" },
> + MBEDTLS_ECP_DP_BP256R1,
> + },
> +#endif /* MBEDTLS_ECP_DP_BP256R1_ENABLED */
> +#if defined(MBEDTLS_ECP_DP_BP384R1_ENABLED)
> + {
> + { ADD_LEN( MBEDTLS_OID_EC_GRP_BP384R1 ), "brainpoolP384r1","brainpool384r1" },
> + MBEDTLS_ECP_DP_BP384R1,
> + },
> +#endif /* MBEDTLS_ECP_DP_BP384R1_ENABLED */
> +#if defined(MBEDTLS_ECP_DP_BP512R1_ENABLED)
> + {
> + { ADD_LEN( MBEDTLS_OID_EC_GRP_BP512R1 ), "brainpoolP512r1","brainpool512r1" },
> + MBEDTLS_ECP_DP_BP512R1,
> + },
> +#endif /* MBEDTLS_ECP_DP_BP512R1_ENABLED */
> + {
> + { NULL, 0, NULL, NULL },
> + MBEDTLS_ECP_DP_NONE,
> + },
> +};
> +
> +FN_OID_TYPED_FROM_ASN1(oid_ecp_grp_t, grp_id, oid_ecp_grp)
> +FN_OID_GET_ATTR1(mbedtls_oid_get_ec_grp, oid_ecp_grp_t, grp_id, mbedtls_ecp_group_id, grp_id)
> +FN_OID_GET_OID_BY_ATTR1(mbedtls_oid_get_oid_by_ec_grp, oid_ecp_grp_t, oid_ecp_grp, mbedtls_ecp_group_id, grp_id)
> +#endif /* MBEDTLS_ECP_C */
> +
> +#if defined(MBEDTLS_CIPHER_C)
> +/*
> + * For PKCS#5 PBES2 encryption algorithm
> + */
> +typedef struct {
> + mbedtls_oid_descriptor_t descriptor;
> + mbedtls_cipher_type_t cipher_alg;
> +} oid_cipher_alg_t;
> +
> +static const oid_cipher_alg_t oid_cipher_alg[] =
> +{
> + {
> + { ADD_LEN( MBEDTLS_OID_DES_CBC ), "desCBC", "DES-CBC" },
> + MBEDTLS_CIPHER_DES_CBC,
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_DES_EDE3_CBC ), "des-ede3-cbc", "DES-EDE3-CBC" },
> + MBEDTLS_CIPHER_DES_EDE3_CBC,
> + },
> + {
> + { NULL, 0, NULL, NULL },
> + MBEDTLS_CIPHER_NONE,
> + },
> +};
> +
> +FN_OID_TYPED_FROM_ASN1(oid_cipher_alg_t, cipher_alg, oid_cipher_alg)
> +FN_OID_GET_ATTR1(mbedtls_oid_get_cipher_alg, oid_cipher_alg_t, cipher_alg, mbedtls_cipher_type_t, cipher_alg)
> +#endif /* MBEDTLS_CIPHER_C */
> +
> +#if defined(MBEDTLS_MD_C)
> +/*
> + * For digestAlgorithm
> + */
> +typedef struct {
> + mbedtls_oid_descriptor_t descriptor;
> + mbedtls_md_type_t md_alg;
> +} oid_md_alg_t;
> +
> +static const oid_md_alg_t oid_md_alg[] =
> +{
> +#if defined(MBEDTLS_MD2_C)
> + {
> + { ADD_LEN( MBEDTLS_OID_DIGEST_ALG_MD2 ), "id-md2", "MD2" },
> + MBEDTLS_MD_MD2,
> + },
> +#endif /* MBEDTLS_MD2_C */
> +#if defined(MBEDTLS_MD4_C)
> + {
> + { ADD_LEN( MBEDTLS_OID_DIGEST_ALG_MD4 ), "id-md4", "MD4" },
> + MBEDTLS_MD_MD4,
> + },
> +#endif /* MBEDTLS_MD4_C */
> +#if defined(MBEDTLS_MD5_C)
> + {
> + { ADD_LEN( MBEDTLS_OID_DIGEST_ALG_MD5 ), "id-md5", "MD5" },
> + MBEDTLS_MD_MD5,
> + },
> +#endif /* MBEDTLS_MD5_C */
> +#if defined(MBEDTLS_SHA1_C)
> + {
> + { ADD_LEN( MBEDTLS_OID_DIGEST_ALG_SHA1 ), "id-sha1", "SHA-1" },
> + MBEDTLS_MD_SHA1,
> + },
> +#endif /* MBEDTLS_SHA1_C */
> +#if defined(MBEDTLS_SHA256_C)
> + {
> + { ADD_LEN( MBEDTLS_OID_DIGEST_ALG_SHA224 ), "id-sha224", "SHA-224" },
> + MBEDTLS_MD_SHA224,
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_DIGEST_ALG_SHA256 ), "id-sha256", "SHA-256" },
> + MBEDTLS_MD_SHA256,
> + },
> +#endif /* MBEDTLS_SHA256_C */
> +#if defined(MBEDTLS_SHA512_C)
> + {
> + { ADD_LEN( MBEDTLS_OID_DIGEST_ALG_SHA384 ), "id-sha384", "SHA-384" },
> + MBEDTLS_MD_SHA384,
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_DIGEST_ALG_SHA512 ), "id-sha512", "SHA-512" },
> + MBEDTLS_MD_SHA512,
> + },
> +#endif /* MBEDTLS_SHA512_C */
> + {
> + { NULL, 0, NULL, NULL },
> + MBEDTLS_MD_NONE,
> + },
> +};
> +
> +FN_OID_TYPED_FROM_ASN1(oid_md_alg_t, md_alg, oid_md_alg)
> +FN_OID_GET_ATTR1(mbedtls_oid_get_md_alg, oid_md_alg_t, md_alg, mbedtls_md_type_t, md_alg)
> +FN_OID_GET_OID_BY_ATTR1(mbedtls_oid_get_oid_by_md, oid_md_alg_t, oid_md_alg, mbedtls_md_type_t, md_alg)
> +#endif /* MBEDTLS_MD_C */
> +
> +#if defined(MBEDTLS_PKCS12_C)
> +/*
> + * For PKCS#12 PBEs
> + */
> +typedef struct {
> + mbedtls_oid_descriptor_t descriptor;
> + mbedtls_md_type_t md_alg;
> + mbedtls_cipher_type_t cipher_alg;
> +} oid_pkcs12_pbe_alg_t;
> +
> +static const oid_pkcs12_pbe_alg_t oid_pkcs12_pbe_alg[] =
> +{
> + {
> + { ADD_LEN( MBEDTLS_OID_PKCS12_PBE_SHA1_DES3_EDE_CBC ), "pbeWithSHAAnd3-KeyTripleDES-CBC", "PBE with SHA1 and 3-Key 3DES" },
> + MBEDTLS_MD_SHA1, MBEDTLS_CIPHER_DES_EDE3_CBC,
> + },
> + {
> + { ADD_LEN( MBEDTLS_OID_PKCS12_PBE_SHA1_DES2_EDE_CBC ), "pbeWithSHAAnd2-KeyTripleDES-CBC", "PBE with SHA1 and 2-Key 3DES" },
> + MBEDTLS_MD_SHA1, MBEDTLS_CIPHER_DES_EDE_CBC,
> + },
> + {
> + { NULL, 0, NULL, NULL },
> + MBEDTLS_MD_NONE, MBEDTLS_CIPHER_NONE,
> + },
> +};
> +
> +FN_OID_TYPED_FROM_ASN1(oid_pkcs12_pbe_alg_t, pkcs12_pbe_alg, oid_pkcs12_pbe_alg)
> +FN_OID_GET_ATTR2(mbedtls_oid_get_pkcs12_pbe_alg, oid_pkcs12_pbe_alg_t, pkcs12_pbe_alg, mbedtls_md_type_t, md_alg, mbedtls_cipher_type_t, cipher_alg)
> +#endif /* MBEDTLS_PKCS12_C */
> +
> +#define OID_SAFE_SNPRINTF \
> + do { \
> + if( ret < 0 || (size_t) ret >= n ) \
> + return( MBEDTLS_ERR_OID_BUF_TOO_SMALL ); \
> + \
> + n -= (size_t) ret; \
> + p += (size_t) ret; \
> + } while( 0 )
> +
> +/* Return the x.y.z.... style numeric string for the given OID */
> +int mbedtls_oid_get_numeric_string( char *buf, size_t size,
> + const mbedtls_asn1_buf *oid )
> +{
> + int ret;
> + size_t i, n;
> + unsigned int value;
> + char *p;
> +
> + p = buf;
> + n = size;
> +
> + /* First byte contains first two dots */
> + if( oid->len > 0 )
> + {
> + ret = mbedtls_snprintf( p, n, "%d.%d", oid->p[0] / 40, oid->p[0] % 40 );
> + OID_SAFE_SNPRINTF;
> + }
> +
> + value = 0;
> + for( i = 1; i < oid->len; i++ )
> + {
> + /* Prevent overflow in value. */
> + if( ( ( value << 7 ) >> 7 ) != value )
> + return( MBEDTLS_ERR_OID_BUF_TOO_SMALL );
> +
> + value <<= 7;
> + value += oid->p[i] & 0x7F;
> +
> + if( !( oid->p[i] & 0x80 ) )
> + {
> + /* Last byte */
> + ret = mbedtls_snprintf( p, n, ".%d", value );
> + OID_SAFE_SNPRINTF;
> + value = 0;
> + }
> + }
> +
> + return( (int) ( size - n ) );
> +}
> +
> +#endif /* MBEDTLS_OID_C */
> diff --git a/backport/compat/verification/pkcs7-asn1.c b/backport/compat/verification/pkcs7-asn1.c
> new file mode 100644
> index 000000000000..9073fd94fa92
> --- /dev/null
> +++ b/backport/compat/verification/pkcs7-asn1.c
> @@ -0,0 +1,355 @@
> +/*
> + * Automatically generated by asn1_compiler. Do not edit
> + *
> + * ASN.1 parser for pkcs7
> + */
> +#include <linux/asn1_ber_bytecode.h>
> +#include "pkcs7-asn1.h"
> +
> +enum pkcs7_actions {
> + ACT_pkcs7_check_content_type = 0,
> + ACT_pkcs7_extract_cert = 1,
> + ACT_pkcs7_note_OID = 2,
> + ACT_pkcs7_note_certificate_list = 3,
> + ACT_pkcs7_note_content = 4,
> + ACT_pkcs7_note_data = 5,
> + ACT_pkcs7_note_signed_info = 6,
> + ACT_pkcs7_note_signeddata_version = 7,
> + ACT_pkcs7_note_signerinfo_version = 8,
> + ACT_pkcs7_sig_note_authenticated_attr = 9,
> + ACT_pkcs7_sig_note_digest_algo = 10,
> + ACT_pkcs7_sig_note_issuer = 11,
> + ACT_pkcs7_sig_note_pkey_algo = 12,
> + ACT_pkcs7_sig_note_serial = 13,
> + ACT_pkcs7_sig_note_set_of_authattrs = 14,
> + ACT_pkcs7_sig_note_signature = 15,
> + ACT_pkcs7_sig_note_skid = 16,
> + NR__pkcs7_actions = 17
> +};
> +
> +static const asn1_action_t pkcs7_action_table[NR__pkcs7_actions] = {
> + [ 0] = pkcs7_check_content_type,
> + [ 1] = pkcs7_extract_cert,
> + [ 2] = pkcs7_note_OID,
> + [ 3] = pkcs7_note_certificate_list,
> + [ 4] = pkcs7_note_content,
> + [ 5] = pkcs7_note_data,
> + [ 6] = pkcs7_note_signed_info,
> + [ 7] = pkcs7_note_signeddata_version,
> + [ 8] = pkcs7_note_signerinfo_version,
> + [ 9] = pkcs7_sig_note_authenticated_attr,
> + [ 10] = pkcs7_sig_note_digest_algo,
> + [ 11] = pkcs7_sig_note_issuer,
> + [ 12] = pkcs7_sig_note_pkey_algo,
> + [ 13] = pkcs7_sig_note_serial,
> + [ 14] = pkcs7_sig_note_set_of_authattrs,
> + [ 15] = pkcs7_sig_note_signature,
> + [ 16] = pkcs7_sig_note_skid,
> +};
> +
> +static const unsigned char pkcs7_machine[] = {
> + // PKCS7ContentInfo
> + [ 0] = ASN1_OP_MATCH,
> + [ 1] = _tag(UNIV, CONS, SEQ),
> + // ContentType
> + [ 2] = ASN1_OP_MATCH_ACT,
> + [ 3] = _tag(UNIV, PRIM, OID),
> + [ 4] = _action(ACT_pkcs7_note_OID),
> + [ 5] = ASN1_OP_ACT,
> + [ 6] = _action(ACT_pkcs7_check_content_type),
> + [ 7] = ASN1_OP_MATCH_JUMP_OR_SKIP, // content
> + [ 8] = _tagn(CONT, CONS, 0),
> + [ 9] = _jump_target(12),
> + [ 10] = ASN1_OP_END_SEQ,
> + [ 11] = ASN1_OP_COMPLETE,
> +
> + // SignedData
> + [ 12] = ASN1_OP_MATCH,
> + [ 13] = _tag(UNIV, CONS, SEQ),
> + [ 14] = ASN1_OP_MATCH_ACT, // version
> + [ 15] = _tag(UNIV, PRIM, INT),
> + [ 16] = _action(ACT_pkcs7_note_signeddata_version),
> + // DigestAlgorithmIdentifiers
> + [ 17] = ASN1_OP_MATCH_JUMP_OR_SKIP, // daSet
> + [ 18] = _tag(UNIV, CONS, SET),
> + [ 19] = _jump_target(61),
> + [ 20] = ASN1_OP_COND_MATCH_JUMP_OR_SKIP, // daSequence
> + [ 21] = _tag(UNIV, CONS, SEQ),
> + [ 22] = _jump_target(67),
> + [ 23] = ASN1_OP_COND_FAIL,
> + // ContentInfo
> + [ 24] = ASN1_OP_MATCH,
> + [ 25] = _tag(UNIV, CONS, SEQ),
> + // ContentType
> + [ 26] = ASN1_OP_MATCH_ACT,
> + [ 27] = _tag(UNIV, PRIM, OID),
> + [ 28] = _action(ACT_pkcs7_note_OID),
> + [ 29] = ASN1_OP_ACT,
> + [ 30] = _action(ACT_pkcs7_note_OID),
> + [ 31] = ASN1_OP_MATCH_JUMP_OR_SKIP, // content
> + [ 32] = _tagn(CONT, CONS, 0),
> + [ 33] = _jump_target(73),
> + [ 34] = ASN1_OP_END_SEQ,
> + [ 35] = ASN1_OP_ACT,
> + [ 36] = _action(ACT_pkcs7_note_content),
> + // ExtendedCertificatesAndCertificates
> + [ 37] = ASN1_OP_MATCH_JUMP_OR_SKIP, // certSet
> + [ 38] = _tagn(CONT, CONS, 0),
> + [ 39] = _jump_target(77), // --> ExtendedCertificatesAndCertificates
> + // Certificates
> + [ 40] = ASN1_OP_COND_MATCH_JUMP_OR_SKIP, // certSequence
> + [ 41] = _tagn(CONT, CONS, 2),
> + [ 42] = _jump_target(85), // --> Certificates
> + [ 43] = ASN1_OP_ACT,
> + [ 44] = _action(ACT_pkcs7_note_certificate_list),
> + // CertificateRevocationLists
> + [ 45] = ASN1_OP_MATCH_JUMP_OR_SKIP, // crlSet
> + [ 46] = _tagn(CONT, CONS, 1),
> + [ 47] = _jump_target(90), // --> CertificateRevocationLists
> + // CRLSequence
> + [ 48] = ASN1_OP_COND_MATCH_JUMP_OR_SKIP, // crlSequence
> + [ 49] = _tagn(CONT, CONS, 3),
> + [ 50] = _jump_target(96), // --> CRLSequence
> + // SignerInfos
> + [ 51] = ASN1_OP_MATCH_JUMP_OR_SKIP, // siSet
> + [ 52] = _tag(UNIV, CONS, SET),
> + [ 53] = _jump_target(102),
> + [ 54] = ASN1_OP_COND_MATCH_JUMP_OR_SKIP, // siSequence
> + [ 55] = _tag(UNIV, CONS, SEQ),
> + [ 56] = _jump_target(108),
> + [ 57] = ASN1_OP_COND_FAIL,
> + [ 58] = ASN1_OP_END_SEQ,
> + [ 59] = ASN1_OP_END_SEQ,
> + [ 60] = ASN1_OP_RETURN,
> +
> + // DigestAlgorithmIdentifier
> + [ 61] = ASN1_OP_MATCH_JUMP,
> + [ 62] = _tag(UNIV, CONS, SEQ),
> + [ 63] = _jump_target(114), // --> DigestAlgorithmIdentifier
> + [ 64] = ASN1_OP_END_SET_OF,
> + [ 65] = _jump_target(61),
> + [ 66] = ASN1_OP_RETURN,
> +
> + // DigestAlgorithmIdentifier
> + [ 67] = ASN1_OP_MATCH_JUMP,
> + [ 68] = _tag(UNIV, CONS, SEQ),
> + [ 69] = _jump_target(114), // --> DigestAlgorithmIdentifier
> + [ 70] = ASN1_OP_END_SEQ_OF,
> + [ 71] = _jump_target(67),
> + [ 72] = ASN1_OP_RETURN,
> +
> + // Data
> + [ 73] = ASN1_OP_MATCH_ANY_ACT,
> + [ 74] = _action(ACT_pkcs7_note_data),
> + [ 75] = ASN1_OP_END_SEQ,
> + [ 76] = ASN1_OP_RETURN,
> +
> + // ExtendedCertificateOrCertificate
> + // Certificate
> + [ 77] = ASN1_OP_MATCH_ANY_ACT_OR_SKIP,
> + [ 78] = _action(ACT_pkcs7_extract_cert),
> + // ExtendedCertificate
> + // Certificate
> + [ 79] = ASN1_OP_COND_MATCH_ANY_ACT_OR_SKIP,
> + [ 80] = _action(ACT_pkcs7_extract_cert),
> + [ 81] = ASN1_OP_COND_FAIL,
> + [ 82] = ASN1_OP_END_SET_OF,
> + [ 83] = _jump_target(77),
> + [ 84] = ASN1_OP_RETURN,
> +
> + // Certificate
> + [ 85] = ASN1_OP_MATCH_ANY_ACT,
> + [ 86] = _action(ACT_pkcs7_extract_cert),
> + [ 87] = ASN1_OP_END_SEQ_OF,
> + [ 88] = _jump_target(85),
> + [ 89] = ASN1_OP_RETURN,
> +
> + // CertificateList
> + [ 90] = ASN1_OP_MATCH_JUMP,
> + [ 91] = _tag(UNIV, CONS, SEQ),
> + [ 92] = _jump_target(120), // --> CertificateList
> + [ 93] = ASN1_OP_END_SET_OF,
> + [ 94] = _jump_target(90),
> + [ 95] = ASN1_OP_RETURN,
> +
> + // CertificateList
> + [ 96] = ASN1_OP_MATCH_JUMP,
> + [ 97] = _tag(UNIV, CONS, SEQ),
> + [ 98] = _jump_target(120), // --> CertificateList
> + [ 99] = ASN1_OP_END_SEQ_OF,
> + [ 100] = _jump_target(96),
> + [ 101] = ASN1_OP_RETURN,
> +
> + // SignerInfo
> + [ 102] = ASN1_OP_MATCH_JUMP,
> + [ 103] = _tag(UNIV, CONS, SEQ),
> + [ 104] = _jump_target(125), // --> SignerInfo
> + [ 105] = ASN1_OP_END_SET_OF,
> + [ 106] = _jump_target(102),
> + [ 107] = ASN1_OP_RETURN,
> +
> + // SignerInfo
> + [ 108] = ASN1_OP_MATCH_JUMP,
> + [ 109] = _tag(UNIV, CONS, SEQ),
> + [ 110] = _jump_target(125), // --> SignerInfo
> + [ 111] = ASN1_OP_END_SEQ_OF,
> + [ 112] = _jump_target(108),
> + [ 113] = ASN1_OP_RETURN,
> +
> + [ 114] = ASN1_OP_MATCH_ACT, // algorithm
> + [ 115] = _tag(UNIV, PRIM, OID),
> + [ 116] = _action(ACT_pkcs7_note_OID),
> + [ 117] = ASN1_OP_MATCH_ANY_OR_SKIP, // parameters
> + [ 118] = ASN1_OP_END_SEQ,
> + [ 119] = ASN1_OP_RETURN,
> +
> + // Certificate
> + [ 120] = ASN1_OP_MATCH_ANY_ACT,
> + [ 121] = _action(ACT_pkcs7_extract_cert),
> + [ 122] = ASN1_OP_END_SEQ_OF,
> + [ 123] = _jump_target(120),
> + [ 124] = ASN1_OP_RETURN,
> +
> + [ 125] = ASN1_OP_MATCH_ACT, // version
> + [ 126] = _tag(UNIV, PRIM, INT),
> + [ 127] = _action(ACT_pkcs7_note_signerinfo_version),
> + // SignerIdentifier
> + // IssuerAndSerialNumber
> + [ 128] = ASN1_OP_MATCH_JUMP_OR_SKIP, // issuerAndSerialNumber
> + [ 129] = _tag(UNIV, CONS, SEQ),
> + [ 130] = _jump_target(169), // --> IssuerAndSerialNumber
> + // SubjectKeyIdentifier
> + [ 131] = ASN1_OP_COND_MATCH_ACT_OR_SKIP, // subjectKeyIdentifier
> + [ 132] = _tagn(CONT, PRIM, 0),
> + [ 133] = _action(ACT_pkcs7_sig_note_skid),
> + [ 134] = ASN1_OP_COND_FAIL,
> + // DigestAlgorithmIdentifier
> + [ 135] = ASN1_OP_MATCH_JUMP,
> + [ 136] = _tag(UNIV, CONS, SEQ),
> + [ 137] = _jump_target(114), // --> DigestAlgorithmIdentifier
> + [ 138] = ASN1_OP_ACT,
> + [ 139] = _action(ACT_pkcs7_sig_note_digest_algo),
> + // SetOfAuthenticatedAttribute
> + [ 140] = ASN1_OP_MATCH_JUMP_OR_SKIP, // aaSet
> + [ 141] = _tagn(CONT, CONS, 0),
> + [ 142] = _jump_target(192), // --> SetOfAuthenticatedAttribute
> + [ 143] = ASN1_OP_MAYBE_ACT,
> + [ 144] = _action(ACT_pkcs7_sig_note_set_of_authattrs),
> + [ 145] = ASN1_OP_COND_MATCH_JUMP_OR_SKIP, // aaSequence
> + [ 146] = _tagn(CONT, CONS, 2),
> + [ 147] = _jump_target(198),
> + // DigestEncryptionAlgorithmIdentifier
> + [ 148] = ASN1_OP_MATCH,
> + [ 149] = _tag(UNIV, CONS, SEQ),
> + [ 150] = ASN1_OP_MATCH_ACT, // algorithm
> + [ 151] = _tag(UNIV, PRIM, OID),
> + [ 152] = _action(ACT_pkcs7_note_OID),
> + [ 153] = ASN1_OP_MATCH_ANY_OR_SKIP, // parameters
> + [ 154] = ASN1_OP_END_SEQ,
> + [ 155] = ASN1_OP_ACT,
> + [ 156] = _action(ACT_pkcs7_sig_note_pkey_algo),
> + // EncryptedDigest
> + [ 157] = ASN1_OP_MATCH_ACT,
> + [ 158] = _tag(UNIV, PRIM, OTS),
> + [ 159] = _action(ACT_pkcs7_sig_note_signature),
> + [ 160] = ASN1_OP_MATCH_JUMP_OR_SKIP, // uaSet
> + [ 161] = _tagn(CONT, CONS, 1),
> + [ 162] = _jump_target(207),
> + [ 163] = ASN1_OP_COND_MATCH_JUMP_OR_SKIP, // uaSequence
> + [ 164] = _tagn(CONT, CONS, 3),
> + [ 165] = _jump_target(213),
> + [ 166] = ASN1_OP_END_SEQ_ACT,
> + [ 167] = _action(ACT_pkcs7_note_signed_info),
> + [ 168] = ASN1_OP_RETURN,
> +
> + // Name
> + [ 169] = ASN1_OP_MATCH,
> + [ 170] = _tag(UNIV, CONS, SEQ),
> + // RelativeDistinguishedName
> + [ 171] = ASN1_OP_MATCH,
> + [ 172] = _tag(UNIV, CONS, SET),
> + // AttributeValueAssertion
> + [ 173] = ASN1_OP_MATCH,
> + [ 174] = _tag(UNIV, CONS, SEQ),
> + [ 175] = ASN1_OP_MATCH_ACT, // attributeType
> + [ 176] = _tag(UNIV, PRIM, OID),
> + [ 177] = _action(ACT_pkcs7_note_OID),
> + [ 178] = ASN1_OP_MATCH_ANY, // attributeValue
> + [ 179] = ASN1_OP_END_SEQ,
> + [ 180] = ASN1_OP_END_SET_OF,
> + [ 181] = _jump_target(173),
> + [ 182] = ASN1_OP_END_SEQ_OF,
> + [ 183] = _jump_target(171),
> + [ 184] = ASN1_OP_ACT,
> + [ 185] = _action(ACT_pkcs7_sig_note_issuer),
> + // CertificateSerialNumber
> + [ 186] = ASN1_OP_MATCH,
> + [ 187] = _tag(UNIV, PRIM, INT),
> + [ 188] = ASN1_OP_ACT,
> + [ 189] = _action(ACT_pkcs7_sig_note_serial),
> + [ 190] = ASN1_OP_END_SEQ,
> + [ 191] = ASN1_OP_RETURN,
> +
> + // AuthenticatedAttribute
> + [ 192] = ASN1_OP_MATCH_JUMP,
> + [ 193] = _tag(UNIV, CONS, SEQ),
> + [ 194] = _jump_target(219), // --> AuthenticatedAttribute
> + [ 195] = ASN1_OP_END_SET_OF,
> + [ 196] = _jump_target(192),
> + [ 197] = ASN1_OP_RETURN,
> +
> + [ 198] = ASN1_OP_MATCH, // aaSequence
> + [ 199] = _tag(UNIV, CONS, SEQ),
> + // AuthenticatedAttribute
> + [ 200] = ASN1_OP_MATCH_JUMP,
> + [ 201] = _tag(UNIV, CONS, SEQ),
> + [ 202] = _jump_target(219), // --> AuthenticatedAttribute
> + [ 203] = ASN1_OP_END_SEQ_OF,
> + [ 204] = _jump_target(200),
> + [ 205] = ASN1_OP_END_SEQ,
> + [ 206] = ASN1_OP_RETURN,
> +
> + // UnauthenticatedAttribute
> + [ 207] = ASN1_OP_MATCH_JUMP,
> + [ 208] = _tag(UNIV, CONS, SEQ),
> + [ 209] = _jump_target(230), // --> UnauthenticatedAttribute
> + [ 210] = ASN1_OP_END_SET_OF,
> + [ 211] = _jump_target(207),
> + [ 212] = ASN1_OP_RETURN,
> +
> + // UnauthenticatedAttribute
> + [ 213] = ASN1_OP_MATCH_JUMP,
> + [ 214] = _tag(UNIV, CONS, SEQ),
> + [ 215] = _jump_target(230), // --> UnauthenticatedAttribute
> + [ 216] = ASN1_OP_END_SEQ_OF,
> + [ 217] = _jump_target(213),
> + [ 218] = ASN1_OP_RETURN,
> +
> + [ 219] = ASN1_OP_MATCH_ACT, // type
> + [ 220] = _tag(UNIV, PRIM, OID),
> + [ 221] = _action(ACT_pkcs7_note_OID),
> + [ 222] = ASN1_OP_MATCH, // values
> + [ 223] = _tag(UNIV, CONS, SET),
> + [ 224] = ASN1_OP_MATCH_ANY_ACT,
> + [ 225] = _action(ACT_pkcs7_sig_note_authenticated_attr),
> + [ 226] = ASN1_OP_END_SET_OF,
> + [ 227] = _jump_target(224),
> + [ 228] = ASN1_OP_END_SEQ,
> + [ 229] = ASN1_OP_RETURN,
> +
> + [ 230] = ASN1_OP_MATCH, // type
> + [ 231] = _tag(UNIV, PRIM, OID),
> + [ 232] = ASN1_OP_MATCH, // values
> + [ 233] = _tag(UNIV, CONS, SET),
> + [ 234] = ASN1_OP_MATCH_ANY,
> + [ 235] = ASN1_OP_END_SET_OF,
> + [ 236] = _jump_target(234),
> + [ 237] = ASN1_OP_END_SEQ,
> + [ 238] = ASN1_OP_RETURN,
> +};
> +
> +const struct asn1_decoder pkcs7_decoder = {
> + .machine = pkcs7_machine,
> + .machlen = sizeof(pkcs7_machine),
> + .actions = pkcs7_action_table,
> +};
> diff --git a/backport/compat/verification/pkcs7-asn1.h b/backport/compat/verification/pkcs7-asn1.h
> new file mode 100644
> index 000000000000..b34e160f7263
> --- /dev/null
> +++ b/backport/compat/verification/pkcs7-asn1.h
> @@ -0,0 +1,27 @@
> +/*
> + * Automatically generated by asn1_compiler. Do not edit
> + *
> + * ASN.1 parser for pkcs7
> + */
> +#include <linux/asn1_decoder.h>
> +
> +extern const struct asn1_decoder pkcs7_decoder;
> +
> +extern int pkcs7_check_content_type(void *, size_t, unsigned char, const void *, size_t);
> +extern int pkcs7_extract_cert(void *, size_t, unsigned char, const void *, size_t);
> +extern int pkcs7_note_OID(void *, size_t, unsigned char, const void *, size_t);
> +extern int pkcs7_note_certificate_list(void *, size_t, unsigned char, const void *, size_t);
> +extern int pkcs7_note_content(void *, size_t, unsigned char, const void *, size_t);
> +extern int pkcs7_note_data(void *, size_t, unsigned char, const void *, size_t);
> +extern int pkcs7_note_signed_info(void *, size_t, unsigned char, const void *, size_t);
> +extern int pkcs7_note_signeddata_version(void *, size_t, unsigned char, const void *, size_t);
> +extern int pkcs7_note_signerinfo_version(void *, size_t, unsigned char, const void *, size_t);
> +extern int pkcs7_sig_note_authenticated_attr(void *, size_t, unsigned char, const void *, size_t);
> +extern int pkcs7_sig_note_digest_algo(void *, size_t, unsigned char, const void *, size_t);
> +extern int pkcs7_sig_note_issuer(void *, size_t, unsigned char, const void *, size_t);
> +extern int pkcs7_sig_note_pkey_algo(void *, size_t, unsigned char, const void *, size_t);
> +extern int pkcs7_sig_note_serial(void *, size_t, unsigned char, const void *, size_t);
> +extern int pkcs7_sig_note_set_of_authattrs(void *, size_t, unsigned char, const void *, size_t);
> +extern int pkcs7_sig_note_signature(void *, size_t, unsigned char, const void *, size_t);
> +extern int pkcs7_sig_note_skid(void *, size_t, unsigned char, const void *, size_t);
> +
> diff --git a/backport/compat/verification/public_key.c b/backport/compat/verification/public_key.c
> new file mode 100644
> index 000000000000..be1756db7886
> --- /dev/null
> +++ b/backport/compat/verification/public_key.c
> @@ -0,0 +1,124 @@
> +/*
> + * Adapted from the kernel for simplicity in backports.
> + *
> + * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
> + * Written by David Howells (dhowells@redhat.com)
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public Licence
> + * as published by the Free Software Foundation; either version
> + * 2 of the Licence, or (at your option) any later version.
> + */
> +
> +#define pr_fmt(fmt) "PKEY: "fmt
> +#include <linux/export.h>
> +#include <linux/kernel.h>
> +#include <linux/slab.h>
> +#include <linux/seq_file.h>
> +#include <linux/scatterlist.h>
> +#include <linux/asn1_decoder.h>
> +#include <crypto/public_key.h>
> +#include "rsapubkey-asn1.h"
> +#include "mbedtls/rsa.h"
> +#include "mbedtls/md.h"
> +
> +void public_key_free(struct public_key *key)
> +{
> + if (key) {
> + kfree(key->key);
> + kfree(key);
> + }
> +}
> +
> +int rsa_get_n(void *context, size_t hdrlen, unsigned char tag,
> + const void *value, size_t vlen)
> +{
> + mbedtls_rsa_context *rsa = context;
> +
> + /* invalid key provided */
> + if (!value || !vlen)
> + return -EINVAL;
> +
> + return mbedtls_mpi_read_binary(&rsa->N, value, vlen) ? -EINVAL : 0;
> +}
> +
> +int rsa_get_e(void *context, size_t hdrlen, unsigned char tag,
> + const void *value, size_t vlen)
> +{
> + mbedtls_rsa_context *rsa = context;
> +
> + /* invalid key provided */
> + if (!value || !vlen)
> + return -EINVAL;
> +
> + return mbedtls_mpi_read_binary(&rsa->E, value, vlen) ? -EINVAL : 0;
> +}
> +
> +int public_key_verify_signature(const struct public_key *pkey,
> + const struct public_key_signature *sig)
> +{
> + mbedtls_rsa_context rsa;
> + mbedtls_md_type_t md_alg;
> + const u8 *sigdata = sig->s;
> + int s_size = sig->s_size;
> + int ret;
> +
> + if (WARN_ON(!pkey))
> + return -EINVAL;
> +
> + if (strcmp(sig->pkey_algo, "rsa"))
> + return -ENOTSUPP;
> +
> + if (strcmp(sig->hash_algo, "sha1") == 0)
> + md_alg = MBEDTLS_MD_SHA1;
> + else if (strcmp(sig->hash_algo, "sha256") == 0)
> + md_alg = MBEDTLS_MD_SHA256;
> + else
> + return -ENOTSUPP;
> +
> + mbedtls_rsa_init(&rsa, MBEDTLS_RSA_PKCS_V15, 0);
> +
> + ret = asn1_ber_decoder(&rsapubkey_decoder, &rsa,
> + pkey->key, pkey->keylen);
> + if (ret)
> + goto free;
> +
> + rsa.len = (mbedtls_mpi_bitlen(&rsa.N) + 7) >> 3;
> +
> + /* FIXME - what is this?? */
> + if (rsa.len == sig->s_size - 1) {
> + sigdata = sig->s + 1;
> + s_size -= 1;
> + }
> +
> + if (rsa.len != s_size) {
> + ret = -EINVAL;
> + goto free;
> + }
> +
> + ret = mbedtls_rsa_pkcs1_verify(&rsa, NULL, NULL, MBEDTLS_RSA_PUBLIC,
> + md_alg, 0, sig->digest, sigdata);
> +
> + if (ret)
> + ret = -EKEYREJECTED;
> + else
> + ret = 0;
> +
> + free:
> + mbedtls_rsa_free(&rsa);
> +
> + return ret;
> +}
> +
> +void public_key_signature_free(struct public_key_signature *sig)
> +{
> + int i;
> +
> + if (sig) {
> + for (i = 0; i < ARRAY_SIZE(sig->auth_ids); i++)
> + kfree(sig->auth_ids[i]);
> + kfree(sig->s);
> + kfree(sig->digest);
> + kfree(sig);
> + }
> +}
> diff --git a/backport/compat/verification/rsa.c b/backport/compat/verification/rsa.c
> new file mode 100644
> index 000000000000..605bd8855e76
> --- /dev/null
> +++ b/backport/compat/verification/rsa.c
> @@ -0,0 +1,1872 @@
> +/*
> + * The RSA public-key cryptosystem
> + *
> + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
> + * SPDX-License-Identifier: GPL-2.0
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * This file is part of mbed TLS (https://tls.mbed.org)
> + */
> +/*
> + * The following sources were referenced in the design of this implementation
> + * of the RSA algorithm:
> + *
> + * [1] A method for obtaining digital signatures and public-key cryptosystems
> + * R Rivest, A Shamir, and L Adleman
> + * http://people.csail.mit.edu/rivest/pubs.html#RSA78
> + *
> + * [2] Handbook of Applied Cryptography - 1997, Chapter 8
> + * Menezes, van Oorschot and Vanstone
> + *
> + * [3] Malware Guard Extension: Using SGX to Conceal Cache Attacks
> + * Michael Schwarz, Samuel Weiser, Daniel Gruss, Clémentine Maurice and
> + * Stefan Mangard
> + * https://arxiv.org/abs/1702.08719v2
> + *
> + */
> +
> +#if !defined(MBEDTLS_CONFIG_FILE)
> +#include "mbedtls/config.h"
> +#else
> +#include MBEDTLS_CONFIG_FILE
> +#endif
> +
> +#if defined(MBEDTLS_RSA_C)
> +
> +#include "mbedtls/rsa.h"
> +#include "mbedtls/oid.h"
> +
> +#if defined(MBEDTLS_PKCS1_V21)
> +#include "mbedtls/md.h"
> +#endif
> +
> +#if defined(MBEDTLS_PKCS1_V15) && !defined(__OpenBSD__)
> +#include <stdlib.h>
> +#endif
> +
> +#if defined(MBEDTLS_PLATFORM_C)
> +#include "mbedtls/platform.h"
> +#else
> +#include <stdio.h>
> +#define mbedtls_printf printf
> +#define mbedtls_calloc calloc
> +#define mbedtls_free free
> +#endif
> +
> +/* Implementation that should never be optimized out by the compiler */
> +static void mbedtls_zeroize( void *v, size_t n ) {
> + volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
> +}
> +
> +/*
> + * Initialize an RSA context
> + */
> +void mbedtls_rsa_init( mbedtls_rsa_context *ctx,
> + int padding,
> + int hash_id )
> +{
> + memset( ctx, 0, sizeof( mbedtls_rsa_context ) );
> +
> + mbedtls_rsa_set_padding( ctx, padding, hash_id );
> +
> +#if defined(MBEDTLS_THREADING_C)
> + mbedtls_mutex_init( &ctx->mutex );
> +#endif
> +}
> +
> +/*
> + * Set padding for an existing RSA context
> + */
> +void mbedtls_rsa_set_padding( mbedtls_rsa_context *ctx, int padding, int hash_id )
> +{
> + ctx->padding = padding;
> + ctx->hash_id = hash_id;
> +}
> +
> +#if defined(MBEDTLS_GENPRIME)
> +
> +/*
> + * Generate an RSA keypair
> + */
> +int mbedtls_rsa_gen_key( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + unsigned int nbits, int exponent )
> +{
> + int ret;
> + mbedtls_mpi P1, Q1, H, G;
> +
> + if( f_rng == NULL || nbits < 128 || exponent < 3 )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + if( nbits % 2 )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + mbedtls_mpi_init( &P1 ); mbedtls_mpi_init( &Q1 );
> + mbedtls_mpi_init( &H ); mbedtls_mpi_init( &G );
> +
> + /*
> + * find primes P and Q with Q < P so that:
> + * GCD( E, (P-1)*(Q-1) ) == 1
> + */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &ctx->E, exponent ) );
> +
> + do
> + {
> + MBEDTLS_MPI_CHK( mbedtls_mpi_gen_prime( &ctx->P, nbits >> 1, 0,
> + f_rng, p_rng ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_gen_prime( &ctx->Q, nbits >> 1, 0,
> + f_rng, p_rng ) );
> +
> + if( mbedtls_mpi_cmp_mpi( &ctx->P, &ctx->Q ) == 0 )
> + continue;
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &ctx->N, &ctx->P, &ctx->Q ) );
> + if( mbedtls_mpi_bitlen( &ctx->N ) != nbits )
> + continue;
> +
> + if( mbedtls_mpi_cmp_mpi( &ctx->P, &ctx->Q ) < 0 )
> + mbedtls_mpi_swap( &ctx->P, &ctx->Q );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &P1, &ctx->P, 1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &Q1, &ctx->Q, 1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &H, &P1, &Q1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_gcd( &G, &ctx->E, &H ) );
> + }
> + while( mbedtls_mpi_cmp_int( &G, 1 ) != 0 );
> +
> + /*
> + * D = E^-1 mod ((P-1)*(Q-1))
> + * DP = D mod (P - 1)
> + * DQ = D mod (Q - 1)
> + * QP = Q^-1 mod P
> + */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_inv_mod( &ctx->D , &ctx->E, &H ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &ctx->DP, &ctx->D, &P1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &ctx->DQ, &ctx->D, &Q1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_inv_mod( &ctx->QP, &ctx->Q, &ctx->P ) );
> +
> + ctx->len = ( mbedtls_mpi_bitlen( &ctx->N ) + 7 ) >> 3;
> +
> +cleanup:
> +
> + mbedtls_mpi_free( &P1 ); mbedtls_mpi_free( &Q1 ); mbedtls_mpi_free( &H ); mbedtls_mpi_free( &G );
> +
> + if( ret != 0 )
> + {
> + mbedtls_rsa_free( ctx );
> + return( MBEDTLS_ERR_RSA_KEY_GEN_FAILED + ret );
> + }
> +
> + return( 0 );
> +}
> +
> +#endif /* MBEDTLS_GENPRIME */
> +
> +/*
> + * Check a public RSA key
> + */
> +int mbedtls_rsa_check_pubkey( const mbedtls_rsa_context *ctx )
> +{
> + if( !ctx->N.p || !ctx->E.p )
> + return( MBEDTLS_ERR_RSA_KEY_CHECK_FAILED );
> +
> + if( ( ctx->N.p[0] & 1 ) == 0 ||
> + ( ctx->E.p[0] & 1 ) == 0 )
> + return( MBEDTLS_ERR_RSA_KEY_CHECK_FAILED );
> +
> + if( mbedtls_mpi_bitlen( &ctx->N ) < 128 ||
> + mbedtls_mpi_bitlen( &ctx->N ) > MBEDTLS_MPI_MAX_BITS )
> + return( MBEDTLS_ERR_RSA_KEY_CHECK_FAILED );
> +
> + if( mbedtls_mpi_bitlen( &ctx->E ) < 2 ||
> + mbedtls_mpi_cmp_mpi( &ctx->E, &ctx->N ) >= 0 )
> + return( MBEDTLS_ERR_RSA_KEY_CHECK_FAILED );
> +
> + return( 0 );
> +}
> +
> +/*
> + * Check a private RSA key
> + */
> +int mbedtls_rsa_check_privkey( const mbedtls_rsa_context *ctx )
> +{
> + int ret;
> + mbedtls_mpi PQ, DE, P1, Q1, H, I, G, G2, L1, L2, DP, DQ, QP;
> +
> + if( ( ret = mbedtls_rsa_check_pubkey( ctx ) ) != 0 )
> + return( ret );
> +
> + if( !ctx->P.p || !ctx->Q.p || !ctx->D.p )
> + return( MBEDTLS_ERR_RSA_KEY_CHECK_FAILED );
> +
> + mbedtls_mpi_init( &PQ ); mbedtls_mpi_init( &DE ); mbedtls_mpi_init( &P1 ); mbedtls_mpi_init( &Q1 );
> + mbedtls_mpi_init( &H ); mbedtls_mpi_init( &I ); mbedtls_mpi_init( &G ); mbedtls_mpi_init( &G2 );
> + mbedtls_mpi_init( &L1 ); mbedtls_mpi_init( &L2 ); mbedtls_mpi_init( &DP ); mbedtls_mpi_init( &DQ );
> + mbedtls_mpi_init( &QP );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &PQ, &ctx->P, &ctx->Q ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &DE, &ctx->D, &ctx->E ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &P1, &ctx->P, 1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &Q1, &ctx->Q, 1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &H, &P1, &Q1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_gcd( &G, &ctx->E, &H ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_gcd( &G2, &P1, &Q1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_div_mpi( &L1, &L2, &H, &G2 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &I, &DE, &L1 ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &DP, &ctx->D, &P1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &DQ, &ctx->D, &Q1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_inv_mod( &QP, &ctx->Q, &ctx->P ) );
> + /*
> + * Check for a valid PKCS1v2 private key
> + */
> + if( mbedtls_mpi_cmp_mpi( &PQ, &ctx->N ) != 0 ||
> + mbedtls_mpi_cmp_mpi( &DP, &ctx->DP ) != 0 ||
> + mbedtls_mpi_cmp_mpi( &DQ, &ctx->DQ ) != 0 ||
> + mbedtls_mpi_cmp_mpi( &QP, &ctx->QP ) != 0 ||
> + mbedtls_mpi_cmp_int( &L2, 0 ) != 0 ||
> + mbedtls_mpi_cmp_int( &I, 1 ) != 0 ||
> + mbedtls_mpi_cmp_int( &G, 1 ) != 0 )
> + {
> + ret = MBEDTLS_ERR_RSA_KEY_CHECK_FAILED;
> + }
> +
> +cleanup:
> + mbedtls_mpi_free( &PQ ); mbedtls_mpi_free( &DE ); mbedtls_mpi_free( &P1 ); mbedtls_mpi_free( &Q1 );
> + mbedtls_mpi_free( &H ); mbedtls_mpi_free( &I ); mbedtls_mpi_free( &G ); mbedtls_mpi_free( &G2 );
> + mbedtls_mpi_free( &L1 ); mbedtls_mpi_free( &L2 ); mbedtls_mpi_free( &DP ); mbedtls_mpi_free( &DQ );
> + mbedtls_mpi_free( &QP );
> +
> + if( ret == MBEDTLS_ERR_RSA_KEY_CHECK_FAILED )
> + return( ret );
> +
> + if( ret != 0 )
> + return( MBEDTLS_ERR_RSA_KEY_CHECK_FAILED + ret );
> +
> + return( 0 );
> +}
> +
> +/*
> + * Check if contexts holding a public and private key match
> + */
> +int mbedtls_rsa_check_pub_priv( const mbedtls_rsa_context *pub, const mbedtls_rsa_context *prv )
> +{
> + if( mbedtls_rsa_check_pubkey( pub ) != 0 ||
> + mbedtls_rsa_check_privkey( prv ) != 0 )
> + {
> + return( MBEDTLS_ERR_RSA_KEY_CHECK_FAILED );
> + }
> +
> + if( mbedtls_mpi_cmp_mpi( &pub->N, &prv->N ) != 0 ||
> + mbedtls_mpi_cmp_mpi( &pub->E, &prv->E ) != 0 )
> + {
> + return( MBEDTLS_ERR_RSA_KEY_CHECK_FAILED );
> + }
> +
> + return( 0 );
> +}
> +
> +/*
> + * Do an RSA public key operation
> + */
> +int mbedtls_rsa_public( mbedtls_rsa_context *ctx,
> + const unsigned char *input,
> + unsigned char *output )
> +{
> + int ret;
> + size_t olen;
> + mbedtls_mpi T;
> +
> + mbedtls_mpi_init( &T );
> +
> +#if defined(MBEDTLS_THREADING_C)
> + if( ( ret = mbedtls_mutex_lock( &ctx->mutex ) ) != 0 )
> + return( ret );
> +#endif
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &T, input, ctx->len ) );
> +
> + if( mbedtls_mpi_cmp_mpi( &T, &ctx->N ) >= 0 )
> + {
> + ret = MBEDTLS_ERR_MPI_BAD_INPUT_DATA;
> + goto cleanup;
> + }
> +
> + olen = ctx->len;
> + MBEDTLS_MPI_CHK( mbedtls_mpi_exp_mod( &T, &T, &ctx->E, &ctx->N, &ctx->RN ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &T, output, olen ) );
> +
> +cleanup:
> +#if defined(MBEDTLS_THREADING_C)
> + if( mbedtls_mutex_unlock( &ctx->mutex ) != 0 )
> + return( MBEDTLS_ERR_THREADING_MUTEX_ERROR );
> +#endif
> +
> + mbedtls_mpi_free( &T );
> +
> + if( ret != 0 )
> + return( MBEDTLS_ERR_RSA_PUBLIC_FAILED + ret );
> +
> + return( 0 );
> +}
> +
> +/*
> + * Generate or update blinding values, see section 10 of:
> + * KOCHER, Paul C. Timing attacks on implementations of Diffie-Hellman, RSA,
> + * DSS, and other systems. In : Advances in Cryptology-CRYPTO'96. Springer
> + * Berlin Heidelberg, 1996. p. 104-113.
> + */
> +static int rsa_prepare_blinding( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
> +{
> + int ret, count = 0;
> +
> + if( ctx->Vf.p != NULL )
> + {
> + /* We already have blinding values, just update them by squaring */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &ctx->Vi, &ctx->Vi, &ctx->Vi ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &ctx->Vi, &ctx->Vi, &ctx->N ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &ctx->Vf, &ctx->Vf, &ctx->Vf ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &ctx->Vf, &ctx->Vf, &ctx->N ) );
> +
> + goto cleanup;
> + }
> +
> + /* Unblinding value: Vf = random number, invertible mod N */
> + do {
> + if( count++ > 10 )
> + return( MBEDTLS_ERR_RSA_RNG_FAILED );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( &ctx->Vf, ctx->len - 1, f_rng, p_rng ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_gcd( &ctx->Vi, &ctx->Vf, &ctx->N ) );
> + } while( mbedtls_mpi_cmp_int( &ctx->Vi, 1 ) != 0 );
> +
> + /* Blinding value: Vi = Vf^(-e) mod N */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_inv_mod( &ctx->Vi, &ctx->Vf, &ctx->N ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_exp_mod( &ctx->Vi, &ctx->Vi, &ctx->E, &ctx->N, &ctx->RN ) );
> +
> +
> +cleanup:
> + return( ret );
> +}
> +
> +/*
> + * Exponent blinding supposed to prevent side-channel attacks using multiple
> + * traces of measurements to recover the RSA key. The more collisions are there,
> + * the more bits of the key can be recovered. See [3].
> + *
> + * Collecting n collisions with m bit long blinding value requires 2^(m-m/n)
> + * observations on avarage.
> + *
> + * For example with 28 byte blinding to achieve 2 collisions the adversary has
> + * to make 2^112 observations on avarage.
> + *
> + * (With the currently (as of 2017 April) known best algorithms breaking 2048
> + * bit RSA requires approximately as much time as trying out 2^112 random keys.
> + * Thus in this sense with 28 byte blinding the security is not reduced by
> + * side-channel attacks like the one in [3])
> + *
> + * This countermeasure does not help if the key recovery is possible with a
> + * single trace.
> + */
> +#define RSA_EXPONENT_BLINDING 28
> +
> +/*
> + * Do an RSA private key operation
> + */
> +int mbedtls_rsa_private( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + const unsigned char *input,
> + unsigned char *output )
> +{
> + int ret;
> + size_t olen;
> + mbedtls_mpi T, T1, T2;
> + mbedtls_mpi P1, Q1, R;
> +#if defined(MBEDTLS_RSA_NO_CRT)
> + mbedtls_mpi D_blind;
> + mbedtls_mpi *D = &ctx->D;
> +#else
> + mbedtls_mpi DP_blind, DQ_blind;
> + mbedtls_mpi *DP = &ctx->DP;
> + mbedtls_mpi *DQ = &ctx->DQ;
> +#endif
> +
> + /* Make sure we have private key info, prevent possible misuse */
> + if( ctx->P.p == NULL || ctx->Q.p == NULL || ctx->D.p == NULL )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + mbedtls_mpi_init( &T ); mbedtls_mpi_init( &T1 ); mbedtls_mpi_init( &T2 );
> + mbedtls_mpi_init( &P1 ); mbedtls_mpi_init( &Q1 ); mbedtls_mpi_init( &R );
> +
> +
> + if( f_rng != NULL )
> + {
> +#if defined(MBEDTLS_RSA_NO_CRT)
> + mbedtls_mpi_init( &D_blind );
> +#else
> + mbedtls_mpi_init( &DP_blind );
> + mbedtls_mpi_init( &DQ_blind );
> +#endif
> + }
> +
> +
> +#if defined(MBEDTLS_THREADING_C)
> + if( ( ret = mbedtls_mutex_lock( &ctx->mutex ) ) != 0 )
> + return( ret );
> +#endif
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &T, input, ctx->len ) );
> + if( mbedtls_mpi_cmp_mpi( &T, &ctx->N ) >= 0 )
> + {
> + ret = MBEDTLS_ERR_MPI_BAD_INPUT_DATA;
> + goto cleanup;
> + }
> +
> + if( f_rng != NULL )
> + {
> + /*
> + * Blinding
> + * T = T * Vi mod N
> + */
> + MBEDTLS_MPI_CHK( rsa_prepare_blinding( ctx, f_rng, p_rng ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &T, &T, &ctx->Vi ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &T, &T, &ctx->N ) );
> +
> + /*
> + * Exponent blinding
> + */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &P1, &ctx->P, 1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &Q1, &ctx->Q, 1 ) );
> +
> +#if defined(MBEDTLS_RSA_NO_CRT)
> + /*
> + * D_blind = ( P - 1 ) * ( Q - 1 ) * R + D
> + */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( &R, RSA_EXPONENT_BLINDING,
> + f_rng, p_rng ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &D_blind, &P1, &Q1 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &D_blind, &D_blind, &R ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &D_blind, &D_blind, &ctx->D ) );
> +
> + D = &D_blind;
> +#else
> + /*
> + * DP_blind = ( P - 1 ) * R + DP
> + */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( &R, RSA_EXPONENT_BLINDING,
> + f_rng, p_rng ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &DP_blind, &P1, &R ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &DP_blind, &DP_blind,
> + &ctx->DP ) );
> +
> + DP = &DP_blind;
> +
> + /*
> + * DQ_blind = ( Q - 1 ) * R + DQ
> + */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( &R, RSA_EXPONENT_BLINDING,
> + f_rng, p_rng ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &DQ_blind, &Q1, &R ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &DQ_blind, &DQ_blind,
> + &ctx->DQ ) );
> +
> + DQ = &DQ_blind;
> +#endif /* MBEDTLS_RSA_NO_CRT */
> + }
> +
> +#if defined(MBEDTLS_RSA_NO_CRT)
> + MBEDTLS_MPI_CHK( mbedtls_mpi_exp_mod( &T, &T, D, &ctx->N, &ctx->RN ) );
> +#else
> + /*
> + * Faster decryption using the CRT
> + *
> + * T1 = input ^ dP mod P
> + * T2 = input ^ dQ mod Q
> + */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_exp_mod( &T1, &T, DP, &ctx->P, &ctx->RP ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_exp_mod( &T2, &T, DQ, &ctx->Q, &ctx->RQ ) );
> +
> + /*
> + * T = (T1 - T2) * (Q^-1 mod P) mod P
> + */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &T, &T1, &T2 ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &T1, &T, &ctx->QP ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &T, &T1, &ctx->P ) );
> +
> + /*
> + * T = T2 + T * Q
> + */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &T1, &T, &ctx->Q ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &T, &T2, &T1 ) );
> +#endif /* MBEDTLS_RSA_NO_CRT */
> +
> + if( f_rng != NULL )
> + {
> + /*
> + * Unblind
> + * T = T * Vf mod N
> + */
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &T, &T, &ctx->Vf ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &T, &T, &ctx->N ) );
> + }
> +
> + olen = ctx->len;
> + MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &T, output, olen ) );
> +
> +cleanup:
> +#if defined(MBEDTLS_THREADING_C)
> + if( mbedtls_mutex_unlock( &ctx->mutex ) != 0 )
> + return( MBEDTLS_ERR_THREADING_MUTEX_ERROR );
> +#endif
> +
> + mbedtls_mpi_free( &T ); mbedtls_mpi_free( &T1 ); mbedtls_mpi_free( &T2 );
> + mbedtls_mpi_free( &P1 ); mbedtls_mpi_free( &Q1 ); mbedtls_mpi_free( &R );
> +
> + if( f_rng != NULL )
> + {
> +#if defined(MBEDTLS_RSA_NO_CRT)
> + mbedtls_mpi_free( &D_blind );
> +#else
> + mbedtls_mpi_free( &DP_blind );
> + mbedtls_mpi_free( &DQ_blind );
> +#endif
> + }
> +
> + if( ret != 0 )
> + return( MBEDTLS_ERR_RSA_PRIVATE_FAILED + ret );
> +
> + return( 0 );
> +}
> +
> +#if defined(MBEDTLS_PKCS1_V21)
> +/**
> + * Generate and apply the MGF1 operation (from PKCS#1 v2.1) to a buffer.
> + *
> + * \param dst buffer to mask
> + * \param dlen length of destination buffer
> + * \param src source of the mask generation
> + * \param slen length of the source buffer
> + * \param md_ctx message digest context to use
> + */
> +static void mgf_mask( unsigned char *dst, size_t dlen, unsigned char *src,
> + size_t slen, mbedtls_md_context_t *md_ctx )
> +{
> + unsigned char mask[MBEDTLS_MD_MAX_SIZE];
> + unsigned char counter[4];
> + unsigned char *p;
> + unsigned int hlen;
> + size_t i, use_len;
> +
> + memset( mask, 0, MBEDTLS_MD_MAX_SIZE );
> + memset( counter, 0, 4 );
> +
> + hlen = mbedtls_md_get_size( md_ctx->md_info );
> +
> + /* Generate and apply dbMask */
> + p = dst;
> +
> + while( dlen > 0 )
> + {
> + use_len = hlen;
> + if( dlen < hlen )
> + use_len = dlen;
> +
> + mbedtls_md_starts( md_ctx );
> + mbedtls_md_update( md_ctx, src, slen );
> + mbedtls_md_update( md_ctx, counter, 4 );
> + mbedtls_md_finish( md_ctx, mask );
> +
> + for( i = 0; i < use_len; ++i )
> + *p++ ^= mask[i];
> +
> + counter[3]++;
> +
> + dlen -= use_len;
> + }
> +
> + mbedtls_zeroize( mask, sizeof( mask ) );
> +}
> +#endif /* MBEDTLS_PKCS1_V21 */
> +
> +#if defined(MBEDTLS_PKCS1_V21)
> +/*
> + * Implementation of the PKCS#1 v2.1 RSAES-OAEP-ENCRYPT function
> + */
> +int mbedtls_rsa_rsaes_oaep_encrypt( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode,
> + const unsigned char *label, size_t label_len,
> + size_t ilen,
> + const unsigned char *input,
> + unsigned char *output )
> +{
> + size_t olen;
> + int ret;
> + unsigned char *p = output;
> + unsigned int hlen;
> + const mbedtls_md_info_t *md_info;
> + mbedtls_md_context_t md_ctx;
> +
> + if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V21 )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + if( f_rng == NULL )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + md_info = mbedtls_md_info_from_type( (mbedtls_md_type_t) ctx->hash_id );
> + if( md_info == NULL )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + olen = ctx->len;
> + hlen = mbedtls_md_get_size( md_info );
> +
> + /* first comparison checks for overflow */
> + if( ilen + 2 * hlen + 2 < ilen || olen < ilen + 2 * hlen + 2 )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + memset( output, 0, olen );
> +
> + *p++ = 0;
> +
> + /* Generate a random octet string seed */
> + if( ( ret = f_rng( p_rng, p, hlen ) ) != 0 )
> + return( MBEDTLS_ERR_RSA_RNG_FAILED + ret );
> +
> + p += hlen;
> +
> + /* Construct DB */
> + mbedtls_md( md_info, label, label_len, p );
> + p += hlen;
> + p += olen - 2 * hlen - 2 - ilen;
> + *p++ = 1;
> + memcpy( p, input, ilen );
> +
> + mbedtls_md_init( &md_ctx );
> + if( ( ret = mbedtls_md_setup( &md_ctx, md_info, 0 ) ) != 0 )
> + {
> + mbedtls_md_free( &md_ctx );
> + return( ret );
> + }
> +
> + /* maskedDB: Apply dbMask to DB */
> + mgf_mask( output + hlen + 1, olen - hlen - 1, output + 1, hlen,
> + &md_ctx );
> +
> + /* maskedSeed: Apply seedMask to seed */
> + mgf_mask( output + 1, hlen, output + hlen + 1, olen - hlen - 1,
> + &md_ctx );
> +
> + mbedtls_md_free( &md_ctx );
> +
> + return( ( mode == MBEDTLS_RSA_PUBLIC )
> + ? mbedtls_rsa_public( ctx, output, output )
> + : mbedtls_rsa_private( ctx, f_rng, p_rng, output, output ) );
> +}
> +#endif /* MBEDTLS_PKCS1_V21 */
> +
> +#if defined(MBEDTLS_PKCS1_V15)
> +/*
> + * Implementation of the PKCS#1 v2.1 RSAES-PKCS1-V1_5-ENCRYPT function
> + */
> +int mbedtls_rsa_rsaes_pkcs1_v15_encrypt( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode, size_t ilen,
> + const unsigned char *input,
> + unsigned char *output )
> +{
> + size_t nb_pad, olen;
> + int ret;
> + unsigned char *p = output;
> +
> + if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V15 )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + // We don't check p_rng because it won't be dereferenced here
> + if( f_rng == NULL || input == NULL || output == NULL )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + olen = ctx->len;
> +
> + /* first comparison checks for overflow */
> + if( ilen + 11 < ilen || olen < ilen + 11 )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + nb_pad = olen - 3 - ilen;
> +
> + *p++ = 0;
> + if( mode == MBEDTLS_RSA_PUBLIC )
> + {
> + *p++ = MBEDTLS_RSA_CRYPT;
> +
> + while( nb_pad-- > 0 )
> + {
> + int rng_dl = 100;
> +
> + do {
> + ret = f_rng( p_rng, p, 1 );
> + } while( *p == 0 && --rng_dl && ret == 0 );
> +
> + /* Check if RNG failed to generate data */
> + if( rng_dl == 0 || ret != 0 )
> + return( MBEDTLS_ERR_RSA_RNG_FAILED + ret );
> +
> + p++;
> + }
> + }
> + else
> + {
> + *p++ = MBEDTLS_RSA_SIGN;
> +
> + while( nb_pad-- > 0 )
> + *p++ = 0xFF;
> + }
> +
> + *p++ = 0;
> + memcpy( p, input, ilen );
> +
> + return( ( mode == MBEDTLS_RSA_PUBLIC )
> + ? mbedtls_rsa_public( ctx, output, output )
> + : mbedtls_rsa_private( ctx, f_rng, p_rng, output, output ) );
> +}
> +#endif /* MBEDTLS_PKCS1_V15 */
> +
> +/*
> + * Add the message padding, then do an RSA operation
> + */
> +int mbedtls_rsa_pkcs1_encrypt( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode, size_t ilen,
> + const unsigned char *input,
> + unsigned char *output )
> +{
> + switch( ctx->padding )
> + {
> +#if defined(MBEDTLS_PKCS1_V15)
> + case MBEDTLS_RSA_PKCS_V15:
> + return mbedtls_rsa_rsaes_pkcs1_v15_encrypt( ctx, f_rng, p_rng, mode, ilen,
> + input, output );
> +#endif
> +
> +#if defined(MBEDTLS_PKCS1_V21)
> + case MBEDTLS_RSA_PKCS_V21:
> + return mbedtls_rsa_rsaes_oaep_encrypt( ctx, f_rng, p_rng, mode, NULL, 0,
> + ilen, input, output );
> +#endif
> +
> + default:
> + return( MBEDTLS_ERR_RSA_INVALID_PADDING );
> + }
> +}
> +
> +#if defined(MBEDTLS_PKCS1_V21)
> +/*
> + * Implementation of the PKCS#1 v2.1 RSAES-OAEP-DECRYPT function
> + */
> +int mbedtls_rsa_rsaes_oaep_decrypt( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode,
> + const unsigned char *label, size_t label_len,
> + size_t *olen,
> + const unsigned char *input,
> + unsigned char *output,
> + size_t output_max_len )
> +{
> + int ret;
> + size_t ilen, i, pad_len;
> + unsigned char *p, bad, pad_done;
> + unsigned char buf[MBEDTLS_MPI_MAX_SIZE];
> + unsigned char lhash[MBEDTLS_MD_MAX_SIZE];
> + unsigned int hlen;
> + const mbedtls_md_info_t *md_info;
> + mbedtls_md_context_t md_ctx;
> +
> + /*
> + * Parameters sanity checks
> + */
> + if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V21 )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + ilen = ctx->len;
> +
> + if( ilen < 16 || ilen > sizeof( buf ) )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + md_info = mbedtls_md_info_from_type( (mbedtls_md_type_t) ctx->hash_id );
> + if( md_info == NULL )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + hlen = mbedtls_md_get_size( md_info );
> +
> + // checking for integer underflow
> + if( 2 * hlen + 2 > ilen )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + /*
> + * RSA operation
> + */
> + ret = ( mode == MBEDTLS_RSA_PUBLIC )
> + ? mbedtls_rsa_public( ctx, input, buf )
> + : mbedtls_rsa_private( ctx, f_rng, p_rng, input, buf );
> +
> + if( ret != 0 )
> + goto cleanup;
> +
> + /*
> + * Unmask data and generate lHash
> + */
> + mbedtls_md_init( &md_ctx );
> + if( ( ret = mbedtls_md_setup( &md_ctx, md_info, 0 ) ) != 0 )
> + {
> + mbedtls_md_free( &md_ctx );
> + goto cleanup;
> + }
> +
> +
> + /* Generate lHash */
> + mbedtls_md( md_info, label, label_len, lhash );
> +
> + /* seed: Apply seedMask to maskedSeed */
> + mgf_mask( buf + 1, hlen, buf + hlen + 1, ilen - hlen - 1,
> + &md_ctx );
> +
> + /* DB: Apply dbMask to maskedDB */
> + mgf_mask( buf + hlen + 1, ilen - hlen - 1, buf + 1, hlen,
> + &md_ctx );
> +
> + mbedtls_md_free( &md_ctx );
> +
> + /*
> + * Check contents, in "constant-time"
> + */
> + p = buf;
> + bad = 0;
> +
> + bad |= *p++; /* First byte must be 0 */
> +
> + p += hlen; /* Skip seed */
> +
> + /* Check lHash */
> + for( i = 0; i < hlen; i++ )
> + bad |= lhash[i] ^ *p++;
> +
> + /* Get zero-padding len, but always read till end of buffer
> + * (minus one, for the 01 byte) */
> + pad_len = 0;
> + pad_done = 0;
> + for( i = 0; i < ilen - 2 * hlen - 2; i++ )
> + {
> + pad_done |= p[i];
> + pad_len += ((pad_done | (unsigned char)-pad_done) >> 7) ^ 1;
> + }
> +
> + p += pad_len;
> + bad |= *p++ ^ 0x01;
> +
> + /*
> + * The only information "leaked" is whether the padding was correct or not
> + * (eg, no data is copied if it was not correct). This meets the
> + * recommendations in PKCS#1 v2.2: an opponent cannot distinguish between
> + * the different error conditions.
> + */
> + if( bad != 0 )
> + {
> + ret = MBEDTLS_ERR_RSA_INVALID_PADDING;
> + goto cleanup;
> + }
> +
> + if( ilen - ( p - buf ) > output_max_len )
> + {
> + ret = MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE;
> + goto cleanup;
> + }
> +
> + *olen = ilen - (p - buf);
> + memcpy( output, p, *olen );
> + ret = 0;
> +
> +cleanup:
> + mbedtls_zeroize( buf, sizeof( buf ) );
> + mbedtls_zeroize( lhash, sizeof( lhash ) );
> +
> + return( ret );
> +}
> +#endif /* MBEDTLS_PKCS1_V21 */
> +
> +#if defined(MBEDTLS_PKCS1_V15)
> +/*
> + * Implementation of the PKCS#1 v2.1 RSAES-PKCS1-V1_5-DECRYPT function
> + */
> +int mbedtls_rsa_rsaes_pkcs1_v15_decrypt( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode, size_t *olen,
> + const unsigned char *input,
> + unsigned char *output,
> + size_t output_max_len)
> +{
> + int ret;
> + size_t ilen, pad_count = 0, i;
> + unsigned char *p, bad, pad_done = 0;
> + unsigned char buf[MBEDTLS_MPI_MAX_SIZE];
> +
> + if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V15 )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + ilen = ctx->len;
> +
> + if( ilen < 16 || ilen > sizeof( buf ) )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + ret = ( mode == MBEDTLS_RSA_PUBLIC )
> + ? mbedtls_rsa_public( ctx, input, buf )
> + : mbedtls_rsa_private( ctx, f_rng, p_rng, input, buf );
> +
> + if( ret != 0 )
> + goto cleanup;
> +
> + p = buf;
> + bad = 0;
> +
> + /*
> + * Check and get padding len in "constant-time"
> + */
> + bad |= *p++; /* First byte must be 0 */
> +
> + /* This test does not depend on secret data */
> + if( mode == MBEDTLS_RSA_PRIVATE )
> + {
> + bad |= *p++ ^ MBEDTLS_RSA_CRYPT;
> +
> + /* Get padding len, but always read till end of buffer
> + * (minus one, for the 00 byte) */
> + for( i = 0; i < ilen - 3; i++ )
> + {
> + pad_done |= ((p[i] | (unsigned char)-p[i]) >> 7) ^ 1;
> + pad_count += ((pad_done | (unsigned char)-pad_done) >> 7) ^ 1;
> + }
> +
> + p += pad_count;
> + bad |= *p++; /* Must be zero */
> + }
> + else
> + {
> + bad |= *p++ ^ MBEDTLS_RSA_SIGN;
> +
> + /* Get padding len, but always read till end of buffer
> + * (minus one, for the 00 byte) */
> + for( i = 0; i < ilen - 3; i++ )
> + {
> + pad_done |= ( p[i] != 0xFF );
> + pad_count += ( pad_done == 0 );
> + }
> +
> + p += pad_count;
> + bad |= *p++; /* Must be zero */
> + }
> +
> + bad |= ( pad_count < 8 );
> +
> + if( bad )
> + {
> + ret = MBEDTLS_ERR_RSA_INVALID_PADDING;
> + goto cleanup;
> + }
> +
> + if( ilen - ( p - buf ) > output_max_len )
> + {
> + ret = MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE;
> + goto cleanup;
> + }
> +
> + *olen = ilen - (p - buf);
> + memcpy( output, p, *olen );
> + ret = 0;
> +
> +cleanup:
> + mbedtls_zeroize( buf, sizeof( buf ) );
> +
> + return( ret );
> +}
> +#endif /* MBEDTLS_PKCS1_V15 */
> +
> +/*
> + * Do an RSA operation, then remove the message padding
> + */
> +int mbedtls_rsa_pkcs1_decrypt( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode, size_t *olen,
> + const unsigned char *input,
> + unsigned char *output,
> + size_t output_max_len)
> +{
> + switch( ctx->padding )
> + {
> +#if defined(MBEDTLS_PKCS1_V15)
> + case MBEDTLS_RSA_PKCS_V15:
> + return mbedtls_rsa_rsaes_pkcs1_v15_decrypt( ctx, f_rng, p_rng, mode, olen,
> + input, output, output_max_len );
> +#endif
> +
> +#if defined(MBEDTLS_PKCS1_V21)
> + case MBEDTLS_RSA_PKCS_V21:
> + return mbedtls_rsa_rsaes_oaep_decrypt( ctx, f_rng, p_rng, mode, NULL, 0,
> + olen, input, output,
> + output_max_len );
> +#endif
> +
> + default:
> + return( MBEDTLS_ERR_RSA_INVALID_PADDING );
> + }
> +}
> +
> +#if defined(MBEDTLS_PKCS1_V21)
> +/*
> + * Implementation of the PKCS#1 v2.1 RSASSA-PSS-SIGN function
> + */
> +int mbedtls_rsa_rsassa_pss_sign( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode,
> + mbedtls_md_type_t md_alg,
> + unsigned int hashlen,
> + const unsigned char *hash,
> + unsigned char *sig )
> +{
> + size_t olen;
> + unsigned char *p = sig;
> + unsigned char salt[MBEDTLS_MD_MAX_SIZE];
> + unsigned int slen, hlen, offset = 0;
> + int ret;
> + size_t msb;
> + const mbedtls_md_info_t *md_info;
> + mbedtls_md_context_t md_ctx;
> +
> + if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V21 )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + if( f_rng == NULL )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + olen = ctx->len;
> +
> + if( md_alg != MBEDTLS_MD_NONE )
> + {
> + /* Gather length of hash to sign */
> + md_info = mbedtls_md_info_from_type( md_alg );
> + if( md_info == NULL )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + hashlen = mbedtls_md_get_size( md_info );
> + }
> +
> + md_info = mbedtls_md_info_from_type( (mbedtls_md_type_t) ctx->hash_id );
> + if( md_info == NULL )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + hlen = mbedtls_md_get_size( md_info );
> + slen = hlen;
> +
> + if( olen < hlen + slen + 2 )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + memset( sig, 0, olen );
> +
> + /* Generate salt of length slen */
> + if( ( ret = f_rng( p_rng, salt, slen ) ) != 0 )
> + return( MBEDTLS_ERR_RSA_RNG_FAILED + ret );
> +
> + /* Note: EMSA-PSS encoding is over the length of N - 1 bits */
> + msb = mbedtls_mpi_bitlen( &ctx->N ) - 1;
> + p += olen - hlen * 2 - 2;
> + *p++ = 0x01;
> + memcpy( p, salt, slen );
> + p += slen;
> +
> + mbedtls_md_init( &md_ctx );
> + if( ( ret = mbedtls_md_setup( &md_ctx, md_info, 0 ) ) != 0 )
> + {
> + mbedtls_md_free( &md_ctx );
> + /* No need to zeroize salt: we didn't use it. */
> + return( ret );
> + }
> +
> + /* Generate H = Hash( M' ) */
> + mbedtls_md_starts( &md_ctx );
> + mbedtls_md_update( &md_ctx, p, 8 );
> + mbedtls_md_update( &md_ctx, hash, hashlen );
> + mbedtls_md_update( &md_ctx, salt, slen );
> + mbedtls_md_finish( &md_ctx, p );
> + mbedtls_zeroize( salt, sizeof( salt ) );
> +
> + /* Compensate for boundary condition when applying mask */
> + if( msb % 8 == 0 )
> + offset = 1;
> +
> + /* maskedDB: Apply dbMask to DB */
> + mgf_mask( sig + offset, olen - hlen - 1 - offset, p, hlen, &md_ctx );
> +
> + mbedtls_md_free( &md_ctx );
> +
> + msb = mbedtls_mpi_bitlen( &ctx->N ) - 1;
> + sig[0] &= 0xFF >> ( olen * 8 - msb );
> +
> + p += hlen;
> + *p++ = 0xBC;
> +
> + return( ( mode == MBEDTLS_RSA_PUBLIC )
> + ? mbedtls_rsa_public( ctx, sig, sig )
> + : mbedtls_rsa_private( ctx, f_rng, p_rng, sig, sig ) );
> +}
> +#endif /* MBEDTLS_PKCS1_V21 */
> +
> +#if defined(MBEDTLS_PKCS1_V15)
> +/*
> + * Implementation of the PKCS#1 v2.1 RSASSA-PKCS1-V1_5-SIGN function
> + */
> +/*
> + * Do an RSA operation to sign the message digest
> + */
> +int mbedtls_rsa_rsassa_pkcs1_v15_sign( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode,
> + mbedtls_md_type_t md_alg,
> + unsigned int hashlen,
> + const unsigned char *hash,
> + unsigned char *sig )
> +{
> + size_t nb_pad, olen, oid_size = 0;
> + unsigned char *p = sig;
> + const char *oid = NULL;
> + unsigned char *sig_try = NULL, *verif = NULL;
> + size_t i;
> + unsigned char diff;
> + volatile unsigned char diff_no_optimize;
> + int ret;
> +
> + if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V15 )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + olen = ctx->len;
> + nb_pad = olen - 3;
> +
> + if( md_alg != MBEDTLS_MD_NONE )
> + {
> + const mbedtls_md_info_t *md_info = mbedtls_md_info_from_type( md_alg );
> + if( md_info == NULL )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + if( mbedtls_oid_get_oid_by_md( md_alg, &oid, &oid_size ) != 0 )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + nb_pad -= 10 + oid_size;
> +
> + hashlen = mbedtls_md_get_size( md_info );
> + }
> +
> + nb_pad -= hashlen;
> +
> + if( ( nb_pad < 8 ) || ( nb_pad > olen ) )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + *p++ = 0;
> + *p++ = MBEDTLS_RSA_SIGN;
> + memset( p, 0xFF, nb_pad );
> + p += nb_pad;
> + *p++ = 0;
> +
> + if( md_alg == MBEDTLS_MD_NONE )
> + {
> + memcpy( p, hash, hashlen );
> + }
> + else
> + {
> + /*
> + * DigestInfo ::= SEQUENCE {
> + * digestAlgorithm DigestAlgorithmIdentifier,
> + * digest Digest }
> + *
> + * DigestAlgorithmIdentifier ::= AlgorithmIdentifier
> + *
> + * Digest ::= OCTET STRING
> + */
> + *p++ = MBEDTLS_ASN1_SEQUENCE | MBEDTLS_ASN1_CONSTRUCTED;
> + *p++ = (unsigned char) ( 0x08 + oid_size + hashlen );
> + *p++ = MBEDTLS_ASN1_SEQUENCE | MBEDTLS_ASN1_CONSTRUCTED;
> + *p++ = (unsigned char) ( 0x04 + oid_size );
> + *p++ = MBEDTLS_ASN1_OID;
> + *p++ = oid_size & 0xFF;
> + memcpy( p, oid, oid_size );
> + p += oid_size;
> + *p++ = MBEDTLS_ASN1_NULL;
> + *p++ = 0x00;
> + *p++ = MBEDTLS_ASN1_OCTET_STRING;
> + *p++ = hashlen;
> + memcpy( p, hash, hashlen );
> + }
> +
> + if( mode == MBEDTLS_RSA_PUBLIC )
> + return( mbedtls_rsa_public( ctx, sig, sig ) );
> +
> + /*
> + * In order to prevent Lenstra's attack, make the signature in a
> + * temporary buffer and check it before returning it.
> + */
> + sig_try = mbedtls_calloc( 1, ctx->len );
> + if( sig_try == NULL )
> + return( MBEDTLS_ERR_MPI_ALLOC_FAILED );
> +
> + verif = mbedtls_calloc( 1, ctx->len );
> + if( verif == NULL )
> + {
> + mbedtls_free( sig_try );
> + return( MBEDTLS_ERR_MPI_ALLOC_FAILED );
> + }
> +
> + MBEDTLS_MPI_CHK( mbedtls_rsa_private( ctx, f_rng, p_rng, sig, sig_try ) );
> + MBEDTLS_MPI_CHK( mbedtls_rsa_public( ctx, sig_try, verif ) );
> +
> + /* Compare in constant time just in case */
> + for( diff = 0, i = 0; i < ctx->len; i++ )
> + diff |= verif[i] ^ sig[i];
> + diff_no_optimize = diff;
> +
> + if( diff_no_optimize != 0 )
> + {
> + ret = MBEDTLS_ERR_RSA_PRIVATE_FAILED;
> + goto cleanup;
> + }
> +
> + memcpy( sig, sig_try, ctx->len );
> +
> +cleanup:
> + mbedtls_free( sig_try );
> + mbedtls_free( verif );
> +
> + return( ret );
> +}
> +#endif /* MBEDTLS_PKCS1_V15 */
> +
> +/*
> + * Do an RSA operation to sign the message digest
> + */
> +int mbedtls_rsa_pkcs1_sign( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode,
> + mbedtls_md_type_t md_alg,
> + unsigned int hashlen,
> + const unsigned char *hash,
> + unsigned char *sig )
> +{
> + switch( ctx->padding )
> + {
> +#if defined(MBEDTLS_PKCS1_V15)
> + case MBEDTLS_RSA_PKCS_V15:
> + return mbedtls_rsa_rsassa_pkcs1_v15_sign( ctx, f_rng, p_rng, mode, md_alg,
> + hashlen, hash, sig );
> +#endif
> +
> +#if defined(MBEDTLS_PKCS1_V21)
> + case MBEDTLS_RSA_PKCS_V21:
> + return mbedtls_rsa_rsassa_pss_sign( ctx, f_rng, p_rng, mode, md_alg,
> + hashlen, hash, sig );
> +#endif
> +
> + default:
> + return( MBEDTLS_ERR_RSA_INVALID_PADDING );
> + }
> +}
> +
> +#if defined(MBEDTLS_PKCS1_V21)
> +/*
> + * Implementation of the PKCS#1 v2.1 RSASSA-PSS-VERIFY function
> + */
> +int mbedtls_rsa_rsassa_pss_verify_ext( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode,
> + mbedtls_md_type_t md_alg,
> + unsigned int hashlen,
> + const unsigned char *hash,
> + mbedtls_md_type_t mgf1_hash_id,
> + int expected_salt_len,
> + const unsigned char *sig )
> +{
> + int ret;
> + size_t siglen;
> + unsigned char *p;
> + unsigned char result[MBEDTLS_MD_MAX_SIZE];
> + unsigned char zeros[8];
> + unsigned int hlen;
> + size_t slen, msb;
> + const mbedtls_md_info_t *md_info;
> + mbedtls_md_context_t md_ctx;
> + unsigned char buf[MBEDTLS_MPI_MAX_SIZE];
> +
> + if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V21 )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + siglen = ctx->len;
> +
> + if( siglen < 16 || siglen > sizeof( buf ) )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + ret = ( mode == MBEDTLS_RSA_PUBLIC )
> + ? mbedtls_rsa_public( ctx, sig, buf )
> + : mbedtls_rsa_private( ctx, f_rng, p_rng, sig, buf );
> +
> + if( ret != 0 )
> + return( ret );
> +
> + p = buf;
> +
> + if( buf[siglen - 1] != 0xBC )
> + return( MBEDTLS_ERR_RSA_INVALID_PADDING );
> +
> + if( md_alg != MBEDTLS_MD_NONE )
> + {
> + /* Gather length of hash to sign */
> + md_info = mbedtls_md_info_from_type( md_alg );
> + if( md_info == NULL )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + hashlen = mbedtls_md_get_size( md_info );
> + }
> +
> + md_info = mbedtls_md_info_from_type( mgf1_hash_id );
> + if( md_info == NULL )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + hlen = mbedtls_md_get_size( md_info );
> + slen = siglen - hlen - 1; /* Currently length of salt + padding */
> +
> + memset( zeros, 0, 8 );
> +
> + /*
> + * Note: EMSA-PSS verification is over the length of N - 1 bits
> + */
> + msb = mbedtls_mpi_bitlen( &ctx->N ) - 1;
> +
> + /* Compensate for boundary condition when applying mask */
> + if( msb % 8 == 0 )
> + {
> + p++;
> + siglen -= 1;
> + }
> + if( buf[0] >> ( 8 - siglen * 8 + msb ) )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + mbedtls_md_init( &md_ctx );
> + if( ( ret = mbedtls_md_setup( &md_ctx, md_info, 0 ) ) != 0 )
> + {
> + mbedtls_md_free( &md_ctx );
> + return( ret );
> + }
> +
> + mgf_mask( p, siglen - hlen - 1, p + siglen - hlen - 1, hlen, &md_ctx );
> +
> + buf[0] &= 0xFF >> ( siglen * 8 - msb );
> +
> + while( p < buf + siglen && *p == 0 )
> + p++;
> +
> + if( p == buf + siglen ||
> + *p++ != 0x01 )
> + {
> + mbedtls_md_free( &md_ctx );
> + return( MBEDTLS_ERR_RSA_INVALID_PADDING );
> + }
> +
> + /* Actual salt len */
> + slen -= p - buf;
> +
> + if( expected_salt_len != MBEDTLS_RSA_SALT_LEN_ANY &&
> + slen != (size_t) expected_salt_len )
> + {
> + mbedtls_md_free( &md_ctx );
> + return( MBEDTLS_ERR_RSA_INVALID_PADDING );
> + }
> +
> + /*
> + * Generate H = Hash( M' )
> + */
> + mbedtls_md_starts( &md_ctx );
> + mbedtls_md_update( &md_ctx, zeros, 8 );
> + mbedtls_md_update( &md_ctx, hash, hashlen );
> + mbedtls_md_update( &md_ctx, p, slen );
> + mbedtls_md_finish( &md_ctx, result );
> +
> + mbedtls_md_free( &md_ctx );
> +
> + if( memcmp( p + slen, result, hlen ) == 0 )
> + return( 0 );
> + else
> + return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
> +}
> +
> +/*
> + * Simplified PKCS#1 v2.1 RSASSA-PSS-VERIFY function
> + */
> +int mbedtls_rsa_rsassa_pss_verify( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode,
> + mbedtls_md_type_t md_alg,
> + unsigned int hashlen,
> + const unsigned char *hash,
> + const unsigned char *sig )
> +{
> + mbedtls_md_type_t mgf1_hash_id = ( ctx->hash_id != MBEDTLS_MD_NONE )
> + ? (mbedtls_md_type_t) ctx->hash_id
> + : md_alg;
> +
> + return( mbedtls_rsa_rsassa_pss_verify_ext( ctx, f_rng, p_rng, mode,
> + md_alg, hashlen, hash,
> + mgf1_hash_id, MBEDTLS_RSA_SALT_LEN_ANY,
> + sig ) );
> +
> +}
> +#endif /* MBEDTLS_PKCS1_V21 */
> +
> +#if defined(MBEDTLS_PKCS1_V15)
> +/*
> + * Implementation of the PKCS#1 v2.1 RSASSA-PKCS1-v1_5-VERIFY function
> + */
> +int mbedtls_rsa_rsassa_pkcs1_v15_verify( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode,
> + mbedtls_md_type_t md_alg,
> + unsigned int hashlen,
> + const unsigned char *hash,
> + const unsigned char *sig )
> +{
> + int ret;
> + size_t len, siglen, asn1_len;
> + unsigned char *p, *p0, *end;
> + mbedtls_md_type_t msg_md_alg;
> + const mbedtls_md_info_t *md_info;
> + mbedtls_asn1_buf oid;
> + unsigned char buf[MBEDTLS_MPI_MAX_SIZE];
> +
> + if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V15 )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + siglen = ctx->len;
> +
> + if( siglen < 16 || siglen > sizeof( buf ) )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> +
> + ret = ( mode == MBEDTLS_RSA_PUBLIC )
> + ? mbedtls_rsa_public( ctx, sig, buf )
> + : mbedtls_rsa_private( ctx, f_rng, p_rng, sig, buf );
> +
> + if( ret != 0 )
> + return( ret );
> +
> + p = buf;
> +
> + if( *p++ != 0 || *p++ != MBEDTLS_RSA_SIGN )
> + return( MBEDTLS_ERR_RSA_INVALID_PADDING );
> +
> + while( *p != 0 )
> + {
> + if( p >= buf + siglen - 1 || *p != 0xFF )
> + return( MBEDTLS_ERR_RSA_INVALID_PADDING );
> + p++;
> + }
> + p++; /* skip 00 byte */
> +
> + /* We've read: 00 01 PS 00 where PS must be at least 8 bytes */
> + if( p - buf < 11 )
> + return( MBEDTLS_ERR_RSA_INVALID_PADDING );
> +
> + len = siglen - ( p - buf );
> +
> + if( len == hashlen && md_alg == MBEDTLS_MD_NONE )
> + {
> + if( memcmp( p, hash, hashlen ) == 0 )
> + return( 0 );
> + else
> + return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
> + }
> +
> + md_info = mbedtls_md_info_from_type( md_alg );
> + if( md_info == NULL )
> + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
> + hashlen = mbedtls_md_get_size( md_info );
> +
> + end = p + len;
> +
> + /*
> + * Parse the ASN.1 structure inside the PKCS#1 v1.5 structure.
> + * Insist on 2-byte length tags, to protect against variants of
> + * Bleichenbacher's forgery attack against lax PKCS#1v1.5 verification.
> + */
> + p0 = p;
> + if( ( ret = mbedtls_asn1_get_tag( &p, end, &asn1_len,
> + MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
> + return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
> + if( p != p0 + 2 || asn1_len + 2 != len )
> + return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
> +
> + p0 = p;
> + if( ( ret = mbedtls_asn1_get_tag( &p, end, &asn1_len,
> + MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
> + return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
> + if( p != p0 + 2 || asn1_len + 6 + hashlen != len )
> + return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
> +
> + p0 = p;
> + if( ( ret = mbedtls_asn1_get_tag( &p, end, &oid.len, MBEDTLS_ASN1_OID ) ) != 0 )
> + return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
> + if( p != p0 + 2 )
> + return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
> +
> + oid.p = p;
> + p += oid.len;
> +
> + if( mbedtls_oid_get_md_alg( &oid, &msg_md_alg ) != 0 )
> + return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
> +
> + if( md_alg != msg_md_alg )
> + return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
> +
> + /*
> + * assume the algorithm parameters must be NULL
> + */
> + p0 = p;
> + if( ( ret = mbedtls_asn1_get_tag( &p, end, &asn1_len, MBEDTLS_ASN1_NULL ) ) != 0 )
> + return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
> + if( p != p0 + 2 )
> + return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
> +
> + p0 = p;
> + if( ( ret = mbedtls_asn1_get_tag( &p, end, &asn1_len, MBEDTLS_ASN1_OCTET_STRING ) ) != 0 )
> + return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
> + if( p != p0 + 2 || asn1_len != hashlen )
> + return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
> +
> + if( memcmp( p, hash, hashlen ) != 0 )
> + return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
> +
> + p += hashlen;
> +
> + if( p != end )
> + return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
> +
> + return( 0 );
> +}
> +#endif /* MBEDTLS_PKCS1_V15 */
> +
> +/*
> + * Do an RSA operation and check the message digest
> + */
> +int mbedtls_rsa_pkcs1_verify( mbedtls_rsa_context *ctx,
> + int (*f_rng)(void *, unsigned char *, size_t),
> + void *p_rng,
> + int mode,
> + mbedtls_md_type_t md_alg,
> + unsigned int hashlen,
> + const unsigned char *hash,
> + const unsigned char *sig )
> +{
> + switch( ctx->padding )
> + {
> +#if defined(MBEDTLS_PKCS1_V15)
> + case MBEDTLS_RSA_PKCS_V15:
> + return mbedtls_rsa_rsassa_pkcs1_v15_verify( ctx, f_rng, p_rng, mode, md_alg,
> + hashlen, hash, sig );
> +#endif
> +
> +#if defined(MBEDTLS_PKCS1_V21)
> + case MBEDTLS_RSA_PKCS_V21:
> + return mbedtls_rsa_rsassa_pss_verify( ctx, f_rng, p_rng, mode, md_alg,
> + hashlen, hash, sig );
> +#endif
> +
> + default:
> + return( MBEDTLS_ERR_RSA_INVALID_PADDING );
> + }
> +}
> +
> +/*
> + * Copy the components of an RSA key
> + */
> +int mbedtls_rsa_copy( mbedtls_rsa_context *dst, const mbedtls_rsa_context *src )
> +{
> + int ret;
> +
> + dst->ver = src->ver;
> + dst->len = src->len;
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &dst->N, &src->N ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &dst->E, &src->E ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &dst->D, &src->D ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &dst->P, &src->P ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &dst->Q, &src->Q ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &dst->DP, &src->DP ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &dst->DQ, &src->DQ ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &dst->QP, &src->QP ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &dst->RN, &src->RN ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &dst->RP, &src->RP ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &dst->RQ, &src->RQ ) );
> +
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &dst->Vi, &src->Vi ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &dst->Vf, &src->Vf ) );
> +
> + dst->padding = src->padding;
> + dst->hash_id = src->hash_id;
> +
> +cleanup:
> + if( ret != 0 )
> + mbedtls_rsa_free( dst );
> +
> + return( ret );
> +}
> +
> +/*
> + * Free the components of an RSA key
> + */
> +void mbedtls_rsa_free( mbedtls_rsa_context *ctx )
> +{
> + mbedtls_mpi_free( &ctx->Vi ); mbedtls_mpi_free( &ctx->Vf );
> + mbedtls_mpi_free( &ctx->RQ ); mbedtls_mpi_free( &ctx->RP ); mbedtls_mpi_free( &ctx->RN );
> + mbedtls_mpi_free( &ctx->QP ); mbedtls_mpi_free( &ctx->DQ ); mbedtls_mpi_free( &ctx->DP );
> + mbedtls_mpi_free( &ctx->Q ); mbedtls_mpi_free( &ctx->P ); mbedtls_mpi_free( &ctx->D );
> + mbedtls_mpi_free( &ctx->E ); mbedtls_mpi_free( &ctx->N );
> +
> +#if defined(MBEDTLS_THREADING_C)
> + mbedtls_mutex_free( &ctx->mutex );
> +#endif
> +}
> +
> +#if defined(MBEDTLS_SELF_TEST)
> +
> +#include "mbedtls/sha1.h"
> +
> +/*
> + * Example RSA-1024 keypair, for test purposes
> + */
> +#define KEY_LEN 128
> +
> +#define RSA_N "9292758453063D803DD603D5E777D788" \
> + "8ED1D5BF35786190FA2F23EBC0848AEA" \
> + "DDA92CA6C3D80B32C4D109BE0F36D6AE" \
> + "7130B9CED7ACDF54CFC7555AC14EEBAB" \
> + "93A89813FBF3C4F8066D2D800F7C38A8" \
> + "1AE31942917403FF4946B0A83D3D3E05" \
> + "EE57C6F5F5606FB5D4BC6CD34EE0801A" \
> + "5E94BB77B07507233A0BC7BAC8F90F79"
> +
> +#define RSA_E "10001"
> +
> +#define RSA_D "24BF6185468786FDD303083D25E64EFC" \
> + "66CA472BC44D253102F8B4A9D3BFA750" \
> + "91386C0077937FE33FA3252D28855837" \
> + "AE1B484A8A9A45F7EE8C0C634F99E8CD" \
> + "DF79C5CE07EE72C7F123142198164234" \
> + "CABB724CF78B8173B9F880FC86322407" \
> + "AF1FEDFDDE2BEB674CA15F3E81A1521E" \
> + "071513A1E85B5DFA031F21ECAE91A34D"
> +
> +#define RSA_P "C36D0EB7FCD285223CFB5AABA5BDA3D8" \
> + "2C01CAD19EA484A87EA4377637E75500" \
> + "FCB2005C5C7DD6EC4AC023CDA285D796" \
> + "C3D9E75E1EFC42488BB4F1D13AC30A57"
> +
> +#define RSA_Q "C000DF51A7C77AE8D7C7370C1FF55B69" \
> + "E211C2B9E5DB1ED0BF61D0D9899620F4" \
> + "910E4168387E3C30AA1E00C339A79508" \
> + "8452DD96A9A5EA5D9DCA68DA636032AF"
> +
> +#define RSA_DP "C1ACF567564274FB07A0BBAD5D26E298" \
> + "3C94D22288ACD763FD8E5600ED4A702D" \
> + "F84198A5F06C2E72236AE490C93F07F8" \
> + "3CC559CD27BC2D1CA488811730BB5725"
> +
> +#define RSA_DQ "4959CBF6F8FEF750AEE6977C155579C7" \
> + "D8AAEA56749EA28623272E4F7D0592AF" \
> + "7C1F1313CAC9471B5C523BFE592F517B" \
> + "407A1BD76C164B93DA2D32A383E58357"
> +
> +#define RSA_QP "9AE7FBC99546432DF71896FC239EADAE" \
> + "F38D18D2B2F0E2DD275AA977E2BF4411" \
> + "F5A3B2A5D33605AEBBCCBA7FEB9F2D2F" \
> + "A74206CEC169D74BF5A8C50D6F48EA08"
> +
> +#define PT_LEN 24
> +#define RSA_PT "\xAA\xBB\xCC\x03\x02\x01\x00\xFF\xFF\xFF\xFF\xFF" \
> + "\x11\x22\x33\x0A\x0B\x0C\xCC\xDD\xDD\xDD\xDD\xDD"
> +
> +#if defined(MBEDTLS_PKCS1_V15)
> +static int myrand( void *rng_state, unsigned char *output, size_t len )
> +{
> +#if !defined(__OpenBSD__)
> + size_t i;
> +
> + if( rng_state != NULL )
> + rng_state = NULL;
> +
> + for( i = 0; i < len; ++i )
> + output[i] = rand();
> +#else
> + if( rng_state != NULL )
> + rng_state = NULL;
> +
> + arc4random_buf( output, len );
> +#endif /* !OpenBSD */
> +
> + return( 0 );
> +}
> +#endif /* MBEDTLS_PKCS1_V15 */
> +
> +/*
> + * Checkup routine
> + */
> +int mbedtls_rsa_self_test( int verbose )
> +{
> + int ret = 0;
> +#if defined(MBEDTLS_PKCS1_V15)
> + size_t len;
> + mbedtls_rsa_context rsa;
> + unsigned char rsa_plaintext[PT_LEN];
> + unsigned char rsa_decrypted[PT_LEN];
> + unsigned char rsa_ciphertext[KEY_LEN];
> +#if defined(MBEDTLS_SHA1_C)
> + unsigned char sha1sum[20];
> +#endif
> +
> + mbedtls_rsa_init( &rsa, MBEDTLS_RSA_PKCS_V15, 0 );
> +
> + rsa.len = KEY_LEN;
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &rsa.N , 16, RSA_N ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &rsa.E , 16, RSA_E ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &rsa.D , 16, RSA_D ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &rsa.P , 16, RSA_P ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &rsa.Q , 16, RSA_Q ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &rsa.DP, 16, RSA_DP ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &rsa.DQ, 16, RSA_DQ ) );
> + MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &rsa.QP, 16, RSA_QP ) );
> +
> + if( verbose != 0 )
> + mbedtls_printf( " RSA key validation: " );
> +
> + if( mbedtls_rsa_check_pubkey( &rsa ) != 0 ||
> + mbedtls_rsa_check_privkey( &rsa ) != 0 )
> + {
> + if( verbose != 0 )
> + mbedtls_printf( "failed\n" );
> +
> + return( 1 );
> + }
> +
> + if( verbose != 0 )
> + mbedtls_printf( "passed\n PKCS#1 encryption : " );
> +
> + memcpy( rsa_plaintext, RSA_PT, PT_LEN );
> +
> + if( mbedtls_rsa_pkcs1_encrypt( &rsa, myrand, NULL, MBEDTLS_RSA_PUBLIC, PT_LEN,
> + rsa_plaintext, rsa_ciphertext ) != 0 )
> + {
> + if( verbose != 0 )
> + mbedtls_printf( "failed\n" );
> +
> + return( 1 );
> + }
> +
> + if( verbose != 0 )
> + mbedtls_printf( "passed\n PKCS#1 decryption : " );
> +
> + if( mbedtls_rsa_pkcs1_decrypt( &rsa, myrand, NULL, MBEDTLS_RSA_PRIVATE, &len,
> + rsa_ciphertext, rsa_decrypted,
> + sizeof(rsa_decrypted) ) != 0 )
> + {
> + if( verbose != 0 )
> + mbedtls_printf( "failed\n" );
> +
> + return( 1 );
> + }
> +
> + if( memcmp( rsa_decrypted, rsa_plaintext, len ) != 0 )
> + {
> + if( verbose != 0 )
> + mbedtls_printf( "failed\n" );
> +
> + return( 1 );
> + }
> +
> + if( verbose != 0 )
> + mbedtls_printf( "passed\n" );
> +
> +#if defined(MBEDTLS_SHA1_C)
> + if( verbose != 0 )
> + mbedtls_printf( " PKCS#1 data sign : " );
> +
> + mbedtls_sha1( rsa_plaintext, PT_LEN, sha1sum );
> +
> + if( mbedtls_rsa_pkcs1_sign( &rsa, myrand, NULL, MBEDTLS_RSA_PRIVATE, MBEDTLS_MD_SHA1, 0,
> + sha1sum, rsa_ciphertext ) != 0 )
> + {
> + if( verbose != 0 )
> + mbedtls_printf( "failed\n" );
> +
> + return( 1 );
> + }
> +
> + if( verbose != 0 )
> + mbedtls_printf( "passed\n PKCS#1 sig. verify: " );
> +
> + if( mbedtls_rsa_pkcs1_verify( &rsa, NULL, NULL, MBEDTLS_RSA_PUBLIC, MBEDTLS_MD_SHA1, 0,
> + sha1sum, rsa_ciphertext ) != 0 )
> + {
> + if( verbose != 0 )
> + mbedtls_printf( "failed\n" );
> +
> + return( 1 );
> + }
> +
> + if( verbose != 0 )
> + mbedtls_printf( "passed\n" );
> +#endif /* MBEDTLS_SHA1_C */
> +
> + if( verbose != 0 )
> + mbedtls_printf( "\n" );
> +
> +cleanup:
> + mbedtls_rsa_free( &rsa );
> +#else /* MBEDTLS_PKCS1_V15 */
> + ((void) verbose);
> +#endif /* MBEDTLS_PKCS1_V15 */
> + return( ret );
> +}
> +
> +#endif /* MBEDTLS_SELF_TEST */
> +
> +#endif /* MBEDTLS_RSA_C */
> diff --git a/backport/compat/verification/rsapubkey-asn1.c b/backport/compat/verification/rsapubkey-asn1.c
> new file mode 100644
> index 000000000000..84ab7f4e47ec
> --- /dev/null
> +++ b/backport/compat/verification/rsapubkey-asn1.c
> @@ -0,0 +1,38 @@
> +/*
> + * Automatically generated by asn1_compiler. Do not edit
> + *
> + * ASN.1 parser for rsapubkey
> + */
> +#include <linux/asn1_ber_bytecode.h>
> +#include "rsapubkey-asn1.h"
> +
> +enum rsapubkey_actions {
> + ACT_rsa_get_e = 0,
> + ACT_rsa_get_n = 1,
> + NR__rsapubkey_actions = 2
> +};
> +
> +static const asn1_action_t rsapubkey_action_table[NR__rsapubkey_actions] = {
> + [ 0] = rsa_get_e,
> + [ 1] = rsa_get_n,
> +};
> +
> +static const unsigned char rsapubkey_machine[] = {
> + // RsaPubKey
> + [ 0] = ASN1_OP_MATCH,
> + [ 1] = _tag(UNIV, CONS, SEQ),
> + [ 2] = ASN1_OP_MATCH_ACT, // n
> + [ 3] = _tag(UNIV, PRIM, INT),
> + [ 4] = _action(ACT_rsa_get_n),
> + [ 5] = ASN1_OP_MATCH_ACT, // e
> + [ 6] = _tag(UNIV, PRIM, INT),
> + [ 7] = _action(ACT_rsa_get_e),
> + [ 8] = ASN1_OP_END_SEQ,
> + [ 9] = ASN1_OP_COMPLETE,
> +};
> +
> +const struct asn1_decoder rsapubkey_decoder = {
> + .machine = rsapubkey_machine,
> + .machlen = sizeof(rsapubkey_machine),
> + .actions = rsapubkey_action_table,
> +};
> diff --git a/backport/compat/verification/rsapubkey-asn1.h b/backport/compat/verification/rsapubkey-asn1.h
> new file mode 100644
> index 000000000000..81a82d40aa27
> --- /dev/null
> +++ b/backport/compat/verification/rsapubkey-asn1.h
> @@ -0,0 +1,15 @@
> +/*
> + * Automatically generated by asn1_compiler. Do not edit
> + *
> + * ASN.1 parser for rsapubkey
> + */
> +#include <linux/asn1_decoder.h>
> +
> +extern const struct asn1_decoder rsapubkey_decoder;
> +
> +#define rsa_get_e LINUX_BACKPORT(rsa_get_e)
> +#define rsa_get_n LINUX_BACKPORT(rsa_get_n)
> +
> +extern int rsa_get_e(void *, size_t, unsigned char, const void *, size_t);
> +extern int rsa_get_n(void *, size_t, unsigned char, const void *, size_t);
> +
> diff --git a/backport/compat/verification/sha256.c b/backport/compat/verification/sha256.c
> new file mode 100644
> index 000000000000..52fedf6a621a
> --- /dev/null
> +++ b/backport/compat/verification/sha256.c
> @@ -0,0 +1,458 @@
> +/*
> + * FIPS-180-2 compliant SHA-256 implementation
> + *
> + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
> + * SPDX-License-Identifier: GPL-2.0
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * This file is part of mbed TLS (https://tls.mbed.org)
> + */
> +/*
> + * The SHA-256 Secure Hash Standard was published by NIST in 2002.
> + *
> + * http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf
> + */
> +
> +#if !defined(MBEDTLS_CONFIG_FILE)
> +#include "mbedtls/config.h"
> +#else
> +#include MBEDTLS_CONFIG_FILE
> +#endif
> +
> +#if defined(MBEDTLS_SHA256_C)
> +
> +#include "mbedtls/sha256.h"
> +
> +#if defined(MBEDTLS_SELF_TEST)
> +#if defined(MBEDTLS_PLATFORM_C)
> +#include "mbedtls/platform.h"
> +#else
> +#include <stdio.h>
> +#include <stdlib.h>
> +#define mbedtls_printf printf
> +#define mbedtls_calloc calloc
> +#define mbedtls_free free
> +#endif /* MBEDTLS_PLATFORM_C */
> +#endif /* MBEDTLS_SELF_TEST */
> +
> +#if !defined(MBEDTLS_SHA256_ALT)
> +
> +/* Implementation that should never be optimized out by the compiler */
> +static void mbedtls_zeroize( void *v, size_t n ) {
> + volatile unsigned char *p = v; while( n-- ) *p++ = 0;
> +}
> +
> +/*
> + * 32-bit integer manipulation macros (big endian)
> + */
> +#ifndef GET_UINT32_BE
> +#define GET_UINT32_BE(n,b,i) \
> +do { \
> + (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
> + | ( (uint32_t) (b)[(i) + 1] << 16 ) \
> + | ( (uint32_t) (b)[(i) + 2] << 8 ) \
> + | ( (uint32_t) (b)[(i) + 3] ); \
> +} while( 0 )
> +#endif
> +
> +#ifndef PUT_UINT32_BE
> +#define PUT_UINT32_BE(n,b,i) \
> +do { \
> + (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
> + (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
> + (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
> + (b)[(i) + 3] = (unsigned char) ( (n) ); \
> +} while( 0 )
> +#endif
> +
> +void mbedtls_sha256_init( mbedtls_sha256_context *ctx )
> +{
> + memset( ctx, 0, sizeof( mbedtls_sha256_context ) );
> +}
> +
> +void mbedtls_sha256_free( mbedtls_sha256_context *ctx )
> +{
> + if( ctx == NULL )
> + return;
> +
> + mbedtls_zeroize( ctx, sizeof( mbedtls_sha256_context ) );
> +}
> +
> +void mbedtls_sha256_clone( mbedtls_sha256_context *dst,
> + const mbedtls_sha256_context *src )
> +{
> + *dst = *src;
> +}
> +
> +/*
> + * SHA-256 context setup
> + */
> +void mbedtls_sha256_starts( mbedtls_sha256_context *ctx, int is224 )
> +{
> + ctx->total[0] = 0;
> + ctx->total[1] = 0;
> +
> + if( is224 == 0 )
> + {
> + /* SHA-256 */
> + ctx->state[0] = 0x6A09E667;
> + ctx->state[1] = 0xBB67AE85;
> + ctx->state[2] = 0x3C6EF372;
> + ctx->state[3] = 0xA54FF53A;
> + ctx->state[4] = 0x510E527F;
> + ctx->state[5] = 0x9B05688C;
> + ctx->state[6] = 0x1F83D9AB;
> + ctx->state[7] = 0x5BE0CD19;
> + }
> + else
> + {
> + /* SHA-224 */
> + ctx->state[0] = 0xC1059ED8;
> + ctx->state[1] = 0x367CD507;
> + ctx->state[2] = 0x3070DD17;
> + ctx->state[3] = 0xF70E5939;
> + ctx->state[4] = 0xFFC00B31;
> + ctx->state[5] = 0x68581511;
> + ctx->state[6] = 0x64F98FA7;
> + ctx->state[7] = 0xBEFA4FA4;
> + }
> +
> + ctx->is224 = is224;
> +}
> +
> +#if !defined(MBEDTLS_SHA256_PROCESS_ALT)
> +static const uint32_t K[] =
> +{
> + 0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
> + 0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
> + 0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
> + 0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
> + 0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
> + 0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
> + 0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
> + 0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
> + 0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
> + 0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
> + 0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
> + 0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
> + 0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
> + 0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
> + 0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
> + 0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2,
> +};
> +
> +#define SHR(x,n) ((x & 0xFFFFFFFF) >> n)
> +#define ROTR(x,n) (SHR(x,n) | (x << (32 - n)))
> +
> +#define S0(x) (ROTR(x, 7) ^ ROTR(x,18) ^ SHR(x, 3))
> +#define S1(x) (ROTR(x,17) ^ ROTR(x,19) ^ SHR(x,10))
> +
> +#define S2(x) (ROTR(x, 2) ^ ROTR(x,13) ^ ROTR(x,22))
> +#define S3(x) (ROTR(x, 6) ^ ROTR(x,11) ^ ROTR(x,25))
> +
> +#define F0(x,y,z) ((x & y) | (z & (x | y)))
> +#define F1(x,y,z) (z ^ (x & (y ^ z)))
> +
> +#define R(t) \
> +( \
> + W[t] = S1(W[t - 2]) + W[t - 7] + \
> + S0(W[t - 15]) + W[t - 16] \
> +)
> +
> +#define P(a,b,c,d,e,f,g,h,x,K) \
> +{ \
> + temp1 = h + S3(e) + F1(e,f,g) + K + x; \
> + temp2 = S2(a) + F0(a,b,c); \
> + d += temp1; h = temp1 + temp2; \
> +}
> +
> +void mbedtls_sha256_process( mbedtls_sha256_context *ctx, const unsigned char data[64] )
> +{
> + uint32_t temp1, temp2, W[64];
> + uint32_t A[8];
> + unsigned int i;
> +
> + for( i = 0; i < 8; i++ )
> + A[i] = ctx->state[i];
> +
> +#if defined(MBEDTLS_SHA256_SMALLER)
> + for( i = 0; i < 64; i++ )
> + {
> + if( i < 16 )
> + GET_UINT32_BE( W[i], data, 4 * i );
> + else
> + R( i );
> +
> + P( A[0], A[1], A[2], A[3], A[4], A[5], A[6], A[7], W[i], K[i] );
> +
> + temp1 = A[7]; A[7] = A[6]; A[6] = A[5]; A[5] = A[4]; A[4] = A[3];
> + A[3] = A[2]; A[2] = A[1]; A[1] = A[0]; A[0] = temp1;
> + }
> +#else /* MBEDTLS_SHA256_SMALLER */
> + for( i = 0; i < 16; i++ )
> + GET_UINT32_BE( W[i], data, 4 * i );
> +
> + for( i = 0; i < 16; i += 8 )
> + {
> + P( A[0], A[1], A[2], A[3], A[4], A[5], A[6], A[7], W[i+0], K[i+0] );
> + P( A[7], A[0], A[1], A[2], A[3], A[4], A[5], A[6], W[i+1], K[i+1] );
> + P( A[6], A[7], A[0], A[1], A[2], A[3], A[4], A[5], W[i+2], K[i+2] );
> + P( A[5], A[6], A[7], A[0], A[1], A[2], A[3], A[4], W[i+3], K[i+3] );
> + P( A[4], A[5], A[6], A[7], A[0], A[1], A[2], A[3], W[i+4], K[i+4] );
> + P( A[3], A[4], A[5], A[6], A[7], A[0], A[1], A[2], W[i+5], K[i+5] );
> + P( A[2], A[3], A[4], A[5], A[6], A[7], A[0], A[1], W[i+6], K[i+6] );
> + P( A[1], A[2], A[3], A[4], A[5], A[6], A[7], A[0], W[i+7], K[i+7] );
> + }
> +
> + for( i = 16; i < 64; i += 8 )
> + {
> + P( A[0], A[1], A[2], A[3], A[4], A[5], A[6], A[7], R(i+0), K[i+0] );
> + P( A[7], A[0], A[1], A[2], A[3], A[4], A[5], A[6], R(i+1), K[i+1] );
> + P( A[6], A[7], A[0], A[1], A[2], A[3], A[4], A[5], R(i+2), K[i+2] );
> + P( A[5], A[6], A[7], A[0], A[1], A[2], A[3], A[4], R(i+3), K[i+3] );
> + P( A[4], A[5], A[6], A[7], A[0], A[1], A[2], A[3], R(i+4), K[i+4] );
> + P( A[3], A[4], A[5], A[6], A[7], A[0], A[1], A[2], R(i+5), K[i+5] );
> + P( A[2], A[3], A[4], A[5], A[6], A[7], A[0], A[1], R(i+6), K[i+6] );
> + P( A[1], A[2], A[3], A[4], A[5], A[6], A[7], A[0], R(i+7), K[i+7] );
> + }
> +#endif /* MBEDTLS_SHA256_SMALLER */
> +
> + for( i = 0; i < 8; i++ )
> + ctx->state[i] += A[i];
> +}
> +#endif /* !MBEDTLS_SHA256_PROCESS_ALT */
> +
> +/*
> + * SHA-256 process buffer
> + */
> +void mbedtls_sha256_update( mbedtls_sha256_context *ctx, const unsigned char *input,
> + size_t ilen )
> +{
> + size_t fill;
> + uint32_t left;
> +
> + if( ilen == 0 )
> + return;
> +
> + left = ctx->total[0] & 0x3F;
> + fill = 64 - left;
> +
> + ctx->total[0] += (uint32_t) ilen;
> + ctx->total[0] &= 0xFFFFFFFF;
> +
> + if( ctx->total[0] < (uint32_t) ilen )
> + ctx->total[1]++;
> +
> + if( left && ilen >= fill )
> + {
> + memcpy( (void *) (ctx->buffer + left), input, fill );
> + mbedtls_sha256_process( ctx, ctx->buffer );
> + input += fill;
> + ilen -= fill;
> + left = 0;
> + }
> +
> + while( ilen >= 64 )
> + {
> + mbedtls_sha256_process( ctx, input );
> + input += 64;
> + ilen -= 64;
> + }
> +
> + if( ilen > 0 )
> + memcpy( (void *) (ctx->buffer + left), input, ilen );
> +}
> +
> +static const unsigned char sha256_padding[64] =
> +{
> + 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
> + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
> + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
> + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
> +};
> +
> +/*
> + * SHA-256 final digest
> + */
> +void mbedtls_sha256_finish( mbedtls_sha256_context *ctx, unsigned char output[32] )
> +{
> + uint32_t last, padn;
> + uint32_t high, low;
> + unsigned char msglen[8];
> +
> + high = ( ctx->total[0] >> 29 )
> + | ( ctx->total[1] << 3 );
> + low = ( ctx->total[0] << 3 );
> +
> + PUT_UINT32_BE( high, msglen, 0 );
> + PUT_UINT32_BE( low, msglen, 4 );
> +
> + last = ctx->total[0] & 0x3F;
> + padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last );
> +
> + mbedtls_sha256_update( ctx, sha256_padding, padn );
> + mbedtls_sha256_update( ctx, msglen, 8 );
> +
> + PUT_UINT32_BE( ctx->state[0], output, 0 );
> + PUT_UINT32_BE( ctx->state[1], output, 4 );
> + PUT_UINT32_BE( ctx->state[2], output, 8 );
> + PUT_UINT32_BE( ctx->state[3], output, 12 );
> + PUT_UINT32_BE( ctx->state[4], output, 16 );
> + PUT_UINT32_BE( ctx->state[5], output, 20 );
> + PUT_UINT32_BE( ctx->state[6], output, 24 );
> +
> + if( ctx->is224 == 0 )
> + PUT_UINT32_BE( ctx->state[7], output, 28 );
> +}
> +
> +#endif /* !MBEDTLS_SHA256_ALT */
> +
> +/*
> + * output = SHA-256( input buffer )
> + */
> +void mbedtls_sha256( const unsigned char *input, size_t ilen,
> + unsigned char output[32], int is224 )
> +{
> + mbedtls_sha256_context ctx;
> +
> + mbedtls_sha256_init( &ctx );
> + mbedtls_sha256_starts( &ctx, is224 );
> + mbedtls_sha256_update( &ctx, input, ilen );
> + mbedtls_sha256_finish( &ctx, output );
> + mbedtls_sha256_free( &ctx );
> +}
> +
> +#if defined(MBEDTLS_SELF_TEST)
> +/*
> + * FIPS-180-2 test vectors
> + */
> +static const unsigned char sha256_test_buf[3][57] =
> +{
> + { "abc" },
> + { "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" },
> + { "" }
> +};
> +
> +static const int sha256_test_buflen[3] =
> +{
> + 3, 56, 1000
> +};
> +
> +static const unsigned char sha256_test_sum[6][32] =
> +{
> + /*
> + * SHA-224 test vectors
> + */
> + { 0x23, 0x09, 0x7D, 0x22, 0x34, 0x05, 0xD8, 0x22,
> + 0x86, 0x42, 0xA4, 0x77, 0xBD, 0xA2, 0x55, 0xB3,
> + 0x2A, 0xAD, 0xBC, 0xE4, 0xBD, 0xA0, 0xB3, 0xF7,
> + 0xE3, 0x6C, 0x9D, 0xA7 },
> + { 0x75, 0x38, 0x8B, 0x16, 0x51, 0x27, 0x76, 0xCC,
> + 0x5D, 0xBA, 0x5D, 0xA1, 0xFD, 0x89, 0x01, 0x50,
> + 0xB0, 0xC6, 0x45, 0x5C, 0xB4, 0xF5, 0x8B, 0x19,
> + 0x52, 0x52, 0x25, 0x25 },
> + { 0x20, 0x79, 0x46, 0x55, 0x98, 0x0C, 0x91, 0xD8,
> + 0xBB, 0xB4, 0xC1, 0xEA, 0x97, 0x61, 0x8A, 0x4B,
> + 0xF0, 0x3F, 0x42, 0x58, 0x19, 0x48, 0xB2, 0xEE,
> + 0x4E, 0xE7, 0xAD, 0x67 },
> +
> + /*
> + * SHA-256 test vectors
> + */
> + { 0xBA, 0x78, 0x16, 0xBF, 0x8F, 0x01, 0xCF, 0xEA,
> + 0x41, 0x41, 0x40, 0xDE, 0x5D, 0xAE, 0x22, 0x23,
> + 0xB0, 0x03, 0x61, 0xA3, 0x96, 0x17, 0x7A, 0x9C,
> + 0xB4, 0x10, 0xFF, 0x61, 0xF2, 0x00, 0x15, 0xAD },
> + { 0x24, 0x8D, 0x6A, 0x61, 0xD2, 0x06, 0x38, 0xB8,
> + 0xE5, 0xC0, 0x26, 0x93, 0x0C, 0x3E, 0x60, 0x39,
> + 0xA3, 0x3C, 0xE4, 0x59, 0x64, 0xFF, 0x21, 0x67,
> + 0xF6, 0xEC, 0xED, 0xD4, 0x19, 0xDB, 0x06, 0xC1 },
> + { 0xCD, 0xC7, 0x6E, 0x5C, 0x99, 0x14, 0xFB, 0x92,
> + 0x81, 0xA1, 0xC7, 0xE2, 0x84, 0xD7, 0x3E, 0x67,
> + 0xF1, 0x80, 0x9A, 0x48, 0xA4, 0x97, 0x20, 0x0E,
> + 0x04, 0x6D, 0x39, 0xCC, 0xC7, 0x11, 0x2C, 0xD0 }
> +};
> +
> +/*
> + * Checkup routine
> + */
> +int mbedtls_sha256_self_test( int verbose )
> +{
> + int i, j, k, buflen, ret = 0;
> + unsigned char *buf;
> + unsigned char sha256sum[32];
> + mbedtls_sha256_context ctx;
> +
> + buf = mbedtls_calloc( 1024, sizeof(unsigned char) );
> + if( NULL == buf )
> + {
> + if( verbose != 0 )
> + mbedtls_printf( "Buffer allocation failed\n" );
> +
> + return( 1 );
> + }
> +
> + mbedtls_sha256_init( &ctx );
> +
> + for( i = 0; i < 6; i++ )
> + {
> + j = i % 3;
> + k = i < 3;
> +
> + if( verbose != 0 )
> + mbedtls_printf( " SHA-%d test #%d: ", 256 - k * 32, j + 1 );
> +
> + mbedtls_sha256_starts( &ctx, k );
> +
> + if( j == 2 )
> + {
> + memset( buf, 'a', buflen = 1000 );
> +
> + for( j = 0; j < 1000; j++ )
> + mbedtls_sha256_update( &ctx, buf, buflen );
> + }
> + else
> + mbedtls_sha256_update( &ctx, sha256_test_buf[j],
> + sha256_test_buflen[j] );
> +
> + mbedtls_sha256_finish( &ctx, sha256sum );
> +
> + if( memcmp( sha256sum, sha256_test_sum[i], 32 - k * 4 ) != 0 )
> + {
> + if( verbose != 0 )
> + mbedtls_printf( "failed\n" );
> +
> + ret = 1;
> + goto exit;
> + }
> +
> + if( verbose != 0 )
> + mbedtls_printf( "passed\n" );
> + }
> +
> + if( verbose != 0 )
> + mbedtls_printf( "\n" );
> +
> +exit:
> + mbedtls_sha256_free( &ctx );
> + mbedtls_free( buf );
> +
> + return( ret );
> +}
> +
> +#endif /* MBEDTLS_SELF_TEST */
> +
> +#endif /* MBEDTLS_SHA256_C */
> diff --git a/backport/compat/verification/verify.c b/backport/compat/verification/verify.c
> new file mode 100644
> index 000000000000..6f686a636118
> --- /dev/null
> +++ b/backport/compat/verification/verify.c
> @@ -0,0 +1,65 @@
> +#include <linux/kernel.h>
> +#include <linux/bug.h>
> +#include <linux/verification.h>
> +#include <linux/export.h>
> +#include <linux/err.h>
> +#include <crypto/pkcs7.h>
> +
> +int verify_pkcs7_signature(const void *data, size_t len,
> + const void *raw_pkcs7, size_t pkcs7_len,
> + struct key *trusted_keys,
> + enum key_being_used_for usage,
> + int (*view_content)(void *ctx,
> + const void *data, size_t len,
> + size_t asn1hdrlen),
> + void *ctx)
> +{
> + struct pkcs7_message *pkcs7;
> + int ret;
> +
> + pkcs7 = pkcs7_parse_message(raw_pkcs7, pkcs7_len);
> + if (IS_ERR(pkcs7))
> + return PTR_ERR(pkcs7);
> +
> + /* The data should be detached - so we need to supply it. */
> + if (data && pkcs7_supply_detached_data(pkcs7, data, len) < 0) {
> + pr_err("PKCS#7 signature with non-detached data\n");
> + ret = -EBADMSG;
> + goto error;
> + }
> +
> + ret = pkcs7_verify(pkcs7, usage);
> + if (ret < 0)
> + goto error;
> +
> + if (WARN_ON(!trusted_keys)) {
> + ret = -EINVAL;
> + goto error;
> + }
> +
> + ret = pkcs7_validate_trust(pkcs7, trusted_keys);
> + if (ret < 0) {
> + if (ret == -ENOKEY)
> + pr_err("PKCS#7 signature not signed with a trusted key\n");
> + goto error;
> + }
> +
> + if (view_content) {
> + size_t asn1hdrlen;
> +
> + ret = pkcs7_get_content_data(pkcs7, &data, &len, &asn1hdrlen);
> + if (ret < 0) {
> + if (ret == -ENODATA)
> + pr_devel("PKCS#7 message does not contain data\n");
> + goto error;
> + }
> +
> + ret = view_content(ctx, data, len, asn1hdrlen);
> + }
> +
> +error:
> + pkcs7_free_message(pkcs7);
> + pr_devel("<==%s() = %d\n", __func__, ret);
> + return ret;
> +}
> +EXPORT_SYMBOL_GPL(verify_pkcs7_signature);
> diff --git a/backport/compat/verification/x509-asn1.c b/backport/compat/verification/x509-asn1.c
> new file mode 100644
> index 000000000000..89aaa6620a47
> --- /dev/null
> +++ b/backport/compat/verification/x509-asn1.c
> @@ -0,0 +1,182 @@
> +/*
> + * Automatically generated by asn1_compiler. Do not edit
> + *
> + * ASN.1 parser for x509
> + */
> +#include <linux/asn1_ber_bytecode.h>
> +#include "x509-asn1.h"
> +
> +enum x509_actions {
> + ACT_x509_extract_key_data = 0,
> + ACT_x509_extract_name_segment = 1,
> + ACT_x509_note_OID = 2,
> + ACT_x509_note_issuer = 3,
> + ACT_x509_note_not_after = 4,
> + ACT_x509_note_not_before = 5,
> + ACT_x509_note_pkey_algo = 6,
> + ACT_x509_note_serial = 7,
> + ACT_x509_note_signature = 8,
> + ACT_x509_note_subject = 9,
> + ACT_x509_note_tbs_certificate = 10,
> + ACT_x509_process_extension = 11,
> + NR__x509_actions = 12
> +};
> +
> +static const asn1_action_t x509_action_table[NR__x509_actions] = {
> + [ 0] = x509_extract_key_data,
> + [ 1] = x509_extract_name_segment,
> + [ 2] = x509_note_OID,
> + [ 3] = x509_note_issuer,
> + [ 4] = x509_note_not_after,
> + [ 5] = x509_note_not_before,
> + [ 6] = x509_note_pkey_algo,
> + [ 7] = x509_note_serial,
> + [ 8] = x509_note_signature,
> + [ 9] = x509_note_subject,
> + [ 10] = x509_note_tbs_certificate,
> + [ 11] = x509_process_extension,
> +};
> +
> +static const unsigned char x509_machine[] = {
> + // Certificate
> + [ 0] = ASN1_OP_MATCH,
> + [ 1] = _tag(UNIV, CONS, SEQ),
> + // TBSCertificate
> + [ 2] = ASN1_OP_MATCH,
> + [ 3] = _tag(UNIV, CONS, SEQ),
> + [ 4] = ASN1_OP_MATCH_JUMP_OR_SKIP, // version
> + [ 5] = _tagn(CONT, CONS, 0),
> + [ 6] = _jump_target(70),
> + // CertificateSerialNumber
> + [ 7] = ASN1_OP_MATCH,
> + [ 8] = _tag(UNIV, PRIM, INT),
> + [ 9] = ASN1_OP_ACT,
> + [ 10] = _action(ACT_x509_note_serial),
> + // AlgorithmIdentifier
> + [ 11] = ASN1_OP_MATCH_JUMP,
> + [ 12] = _tag(UNIV, CONS, SEQ),
> + [ 13] = _jump_target(74), // --> AlgorithmIdentifier
> + [ 14] = ASN1_OP_ACT,
> + [ 15] = _action(ACT_x509_note_pkey_algo),
> + // Name
> + [ 16] = ASN1_OP_MATCH_JUMP,
> + [ 17] = _tag(UNIV, CONS, SEQ),
> + [ 18] = _jump_target(80), // --> Name
> + [ 19] = ASN1_OP_ACT,
> + [ 20] = _action(ACT_x509_note_issuer),
> + // Validity
> + [ 21] = ASN1_OP_MATCH,
> + [ 22] = _tag(UNIV, CONS, SEQ),
> + // Time
> + [ 23] = ASN1_OP_MATCH_OR_SKIP, // utcTime
> + [ 24] = _tag(UNIV, PRIM, UNITIM),
> + [ 25] = ASN1_OP_COND_MATCH_OR_SKIP, // generalTime
> + [ 26] = _tag(UNIV, PRIM, GENTIM),
> + [ 27] = ASN1_OP_COND_FAIL,
> + [ 28] = ASN1_OP_ACT,
> + [ 29] = _action(ACT_x509_note_not_before),
> + // Time
> + [ 30] = ASN1_OP_MATCH_OR_SKIP, // utcTime
> + [ 31] = _tag(UNIV, PRIM, UNITIM),
> + [ 32] = ASN1_OP_COND_MATCH_OR_SKIP, // generalTime
> + [ 33] = _tag(UNIV, PRIM, GENTIM),
> + [ 34] = ASN1_OP_COND_FAIL,
> + [ 35] = ASN1_OP_ACT,
> + [ 36] = _action(ACT_x509_note_not_after),
> + [ 37] = ASN1_OP_END_SEQ,
> + // Name
> + [ 38] = ASN1_OP_MATCH_JUMP,
> + [ 39] = _tag(UNIV, CONS, SEQ),
> + [ 40] = _jump_target(80), // --> Name
> + [ 41] = ASN1_OP_ACT,
> + [ 42] = _action(ACT_x509_note_subject),
> + // SubjectPublicKeyInfo
> + [ 43] = ASN1_OP_MATCH,
> + [ 44] = _tag(UNIV, CONS, SEQ),
> + // AlgorithmIdentifier
> + [ 45] = ASN1_OP_MATCH_JUMP,
> + [ 46] = _tag(UNIV, CONS, SEQ),
> + [ 47] = _jump_target(74), // --> AlgorithmIdentifier
> + [ 48] = ASN1_OP_MATCH_ACT, // subjectPublicKey
> + [ 49] = _tag(UNIV, PRIM, BTS),
> + [ 50] = _action(ACT_x509_extract_key_data),
> + [ 51] = ASN1_OP_END_SEQ,
> + // UniqueIdentifier
> + [ 52] = ASN1_OP_MATCH_OR_SKIP, // issuerUniqueID
> + [ 53] = _tagn(CONT, PRIM, 1),
> + // UniqueIdentifier
> + [ 54] = ASN1_OP_MATCH_OR_SKIP, // subjectUniqueID
> + [ 55] = _tagn(CONT, PRIM, 2),
> + [ 56] = ASN1_OP_MATCH_JUMP_OR_SKIP, // extensions
> + [ 57] = _tagn(CONT, CONS, 3),
> + [ 58] = _jump_target(95),
> + [ 59] = ASN1_OP_END_SEQ,
> + [ 60] = ASN1_OP_ACT,
> + [ 61] = _action(ACT_x509_note_tbs_certificate),
> + // AlgorithmIdentifier
> + [ 62] = ASN1_OP_MATCH_JUMP,
> + [ 63] = _tag(UNIV, CONS, SEQ),
> + [ 64] = _jump_target(74), // --> AlgorithmIdentifier
> + [ 65] = ASN1_OP_MATCH_ACT, // signature
> + [ 66] = _tag(UNIV, PRIM, BTS),
> + [ 67] = _action(ACT_x509_note_signature),
> + [ 68] = ASN1_OP_END_SEQ,
> + [ 69] = ASN1_OP_COMPLETE,
> +
> + // Version
> + [ 70] = ASN1_OP_MATCH,
> + [ 71] = _tag(UNIV, PRIM, INT),
> + [ 72] = ASN1_OP_END_SEQ,
> + [ 73] = ASN1_OP_RETURN,
> +
> + [ 74] = ASN1_OP_MATCH_ACT, // algorithm
> + [ 75] = _tag(UNIV, PRIM, OID),
> + [ 76] = _action(ACT_x509_note_OID),
> + [ 77] = ASN1_OP_MATCH_ANY_OR_SKIP, // parameters
> + [ 78] = ASN1_OP_END_SEQ,
> + [ 79] = ASN1_OP_RETURN,
> +
> + // RelativeDistinguishedName
> + [ 80] = ASN1_OP_MATCH,
> + [ 81] = _tag(UNIV, CONS, SET),
> + // AttributeValueAssertion
> + [ 82] = ASN1_OP_MATCH,
> + [ 83] = _tag(UNIV, CONS, SEQ),
> + [ 84] = ASN1_OP_MATCH_ACT, // attributeType
> + [ 85] = _tag(UNIV, PRIM, OID),
> + [ 86] = _action(ACT_x509_note_OID),
> + [ 87] = ASN1_OP_MATCH_ANY_ACT, // attributeValue
> + [ 88] = _action(ACT_x509_extract_name_segment),
> + [ 89] = ASN1_OP_END_SEQ,
> + [ 90] = ASN1_OP_END_SET_OF,
> + [ 91] = _jump_target(82),
> + [ 92] = ASN1_OP_END_SEQ_OF,
> + [ 93] = _jump_target(80),
> + [ 94] = ASN1_OP_RETURN,
> +
> + // Extensions
> + [ 95] = ASN1_OP_MATCH,
> + [ 96] = _tag(UNIV, CONS, SEQ),
> + // Extension
> + [ 97] = ASN1_OP_MATCH,
> + [ 98] = _tag(UNIV, CONS, SEQ),
> + [ 99] = ASN1_OP_MATCH_ACT, // extnid
> + [ 100] = _tag(UNIV, PRIM, OID),
> + [ 101] = _action(ACT_x509_note_OID),
> + [ 102] = ASN1_OP_MATCH_OR_SKIP, // critical
> + [ 103] = _tag(UNIV, PRIM, BOOL),
> + [ 104] = ASN1_OP_MATCH_ACT, // extnValue
> + [ 105] = _tag(UNIV, PRIM, OTS),
> + [ 106] = _action(ACT_x509_process_extension),
> + [ 107] = ASN1_OP_END_SEQ,
> + [ 108] = ASN1_OP_END_SEQ_OF,
> + [ 109] = _jump_target(97),
> + [ 110] = ASN1_OP_END_SEQ,
> + [ 111] = ASN1_OP_RETURN,
> +};
> +
> +const struct asn1_decoder x509_decoder = {
> + .machine = x509_machine,
> + .machlen = sizeof(x509_machine),
> + .actions = x509_action_table,
> +};
> diff --git a/backport/compat/verification/x509-asn1.h b/backport/compat/verification/x509-asn1.h
> new file mode 100644
> index 000000000000..4f32a25d6660
> --- /dev/null
> +++ b/backport/compat/verification/x509-asn1.h
> @@ -0,0 +1,22 @@
> +/*
> + * Automatically generated by asn1_compiler. Do not edit
> + *
> + * ASN.1 parser for x509
> + */
> +#include <linux/asn1_decoder.h>
> +
> +extern const struct asn1_decoder x509_decoder;
> +
> +extern int x509_extract_key_data(void *, size_t, unsigned char, const void *, size_t);
> +extern int x509_extract_name_segment(void *, size_t, unsigned char, const void *, size_t);
> +extern int x509_note_OID(void *, size_t, unsigned char, const void *, size_t);
> +extern int x509_note_issuer(void *, size_t, unsigned char, const void *, size_t);
> +extern int x509_note_not_after(void *, size_t, unsigned char, const void *, size_t);
> +extern int x509_note_not_before(void *, size_t, unsigned char, const void *, size_t);
> +extern int x509_note_pkey_algo(void *, size_t, unsigned char, const void *, size_t);
> +extern int x509_note_serial(void *, size_t, unsigned char, const void *, size_t);
> +extern int x509_note_signature(void *, size_t, unsigned char, const void *, size_t);
> +extern int x509_note_subject(void *, size_t, unsigned char, const void *, size_t);
> +extern int x509_note_tbs_certificate(void *, size_t, unsigned char, const void *, size_t);
> +extern int x509_process_extension(void *, size_t, unsigned char, const void *, size_t);
> +
> diff --git a/backport/compat/verification/x509_akid-asn1.c b/backport/compat/verification/x509_akid-asn1.c
> new file mode 100644
> index 000000000000..dd3c6c2e76f1
> --- /dev/null
> +++ b/backport/compat/verification/x509_akid-asn1.c
> @@ -0,0 +1,144 @@
> +/*
> + * Automatically generated by asn1_compiler. Do not edit
> + *
> + * ASN.1 parser for x509_akid
> + */
> +#include <linux/asn1_ber_bytecode.h>
> +#include "x509_akid-asn1.h"
> +
> +enum x509_akid_actions {
> + ACT_x509_akid_note_kid = 0,
> + ACT_x509_akid_note_name = 1,
> + ACT_x509_akid_note_serial = 2,
> + ACT_x509_extract_name_segment = 3,
> + ACT_x509_note_OID = 4,
> + NR__x509_akid_actions = 5
> +};
> +
> +static const asn1_action_t x509_akid_action_table[NR__x509_akid_actions] = {
> + [ 0] = x509_akid_note_kid,
> + [ 1] = x509_akid_note_name,
> + [ 2] = x509_akid_note_serial,
> + [ 3] = x509_extract_name_segment,
> + [ 4] = x509_note_OID,
> +};
> +
> +static const unsigned char x509_akid_machine[] = {
> + // AuthorityKeyIdentifier
> + [ 0] = ASN1_OP_MATCH,
> + [ 1] = _tag(UNIV, CONS, SEQ),
> + // KeyIdentifier
> + [ 2] = ASN1_OP_MATCH_ACT_OR_SKIP, // keyIdentifier
> + [ 3] = _tagn(CONT, PRIM, 0),
> + [ 4] = _action(ACT_x509_akid_note_kid),
> + // GeneralNames
> + [ 5] = ASN1_OP_MATCH_JUMP_OR_SKIP, // authorityCertIssuer
> + [ 6] = _tagn(CONT, CONS, 1),
> + [ 7] = _jump_target(13), // --> GeneralNames
> + // CertificateSerialNumber
> + [ 8] = ASN1_OP_MATCH_ACT_OR_SKIP, // authorityCertSerialNumber
> + [ 9] = _tagn(CONT, PRIM, 2),
> + [ 10] = _action(ACT_x509_akid_note_serial),
> + [ 11] = ASN1_OP_END_SEQ,
> + [ 12] = ASN1_OP_COMPLETE,
> +
> + // GeneralName
> + [ 13] = ASN1_OP_MATCH_JUMP_OR_SKIP, // otherName
> + [ 14] = _tagn(CONT, CONS, 0),
> + [ 15] = _jump_target(44),
> + [ 16] = ASN1_OP_COND_MATCH_JUMP_OR_SKIP, // rfc822Name
> + [ 17] = _tagn(CONT, CONS, 1),
> + [ 18] = _jump_target(47),
> + [ 19] = ASN1_OP_COND_MATCH_JUMP_OR_SKIP, // dNSName
> + [ 20] = _tagn(CONT, CONS, 2),
> + [ 21] = _jump_target(51),
> + [ 22] = ASN1_OP_COND_MATCH_JUMP_OR_SKIP, // x400Address
> + [ 23] = _tagn(CONT, CONS, 3),
> + [ 24] = _jump_target(55),
> + [ 25] = ASN1_OP_COND_MATCH_JUMP_OR_SKIP, // directoryName
> + [ 26] = _tagn(CONT, CONS, 4),
> + [ 27] = _jump_target(58),
> + [ 28] = ASN1_OP_COND_MATCH_JUMP_OR_SKIP, // ediPartyName
> + [ 29] = _tagn(CONT, CONS, 5),
> + [ 30] = _jump_target(78),
> + [ 31] = ASN1_OP_COND_MATCH_JUMP_OR_SKIP, // uniformResourceIdentifier
> + [ 32] = _tagn(CONT, CONS, 6),
> + [ 33] = _jump_target(81),
> + [ 34] = ASN1_OP_COND_MATCH_JUMP_OR_SKIP, // iPAddress
> + [ 35] = _tagn(CONT, CONS, 7),
> + [ 36] = _jump_target(85),
> + [ 37] = ASN1_OP_COND_MATCH_JUMP_OR_SKIP, // registeredID
> + [ 38] = _tagn(CONT, CONS, 8),
> + [ 39] = _jump_target(89),
> + [ 40] = ASN1_OP_COND_FAIL,
> + [ 41] = ASN1_OP_END_SEQ_OF,
> + [ 42] = _jump_target(13),
> + [ 43] = ASN1_OP_RETURN,
> +
> + [ 44] = ASN1_OP_MATCH_ANY, // otherName
> + [ 45] = ASN1_OP_END_SEQ,
> + [ 46] = ASN1_OP_RETURN,
> +
> + [ 47] = ASN1_OP_MATCH, // rfc822Name
> + [ 48] = _tag(UNIV, PRIM, IA5STR),
> + [ 49] = ASN1_OP_END_SEQ,
> + [ 50] = ASN1_OP_RETURN,
> +
> + [ 51] = ASN1_OP_MATCH, // dNSName
> + [ 52] = _tag(UNIV, PRIM, IA5STR),
> + [ 53] = ASN1_OP_END_SEQ,
> + [ 54] = ASN1_OP_RETURN,
> +
> + [ 55] = ASN1_OP_MATCH_ANY, // x400Address
> + [ 56] = ASN1_OP_END_SEQ,
> + [ 57] = ASN1_OP_RETURN,
> +
> + // Name
> + [ 58] = ASN1_OP_MATCH,
> + [ 59] = _tag(UNIV, CONS, SEQ),
> + // RelativeDistinguishedName
> + [ 60] = ASN1_OP_MATCH,
> + [ 61] = _tag(UNIV, CONS, SET),
> + // AttributeValueAssertion
> + [ 62] = ASN1_OP_MATCH,
> + [ 63] = _tag(UNIV, CONS, SEQ),
> + [ 64] = ASN1_OP_MATCH_ACT, // attributeType
> + [ 65] = _tag(UNIV, PRIM, OID),
> + [ 66] = _action(ACT_x509_note_OID),
> + [ 67] = ASN1_OP_MATCH_ANY_ACT, // attributeValue
> + [ 68] = _action(ACT_x509_extract_name_segment),
> + [ 69] = ASN1_OP_END_SEQ,
> + [ 70] = ASN1_OP_END_SET_OF,
> + [ 71] = _jump_target(62),
> + [ 72] = ASN1_OP_END_SEQ_OF,
> + [ 73] = _jump_target(60),
> + [ 74] = ASN1_OP_ACT,
> + [ 75] = _action(ACT_x509_akid_note_name),
> + [ 76] = ASN1_OP_END_SEQ,
> + [ 77] = ASN1_OP_RETURN,
> +
> + [ 78] = ASN1_OP_MATCH_ANY, // ediPartyName
> + [ 79] = ASN1_OP_END_SEQ,
> + [ 80] = ASN1_OP_RETURN,
> +
> + [ 81] = ASN1_OP_MATCH, // uniformResourceIdentifier
> + [ 82] = _tag(UNIV, PRIM, IA5STR),
> + [ 83] = ASN1_OP_END_SEQ,
> + [ 84] = ASN1_OP_RETURN,
> +
> + [ 85] = ASN1_OP_MATCH, // iPAddress
> + [ 86] = _tag(UNIV, PRIM, OTS),
> + [ 87] = ASN1_OP_END_SEQ,
> + [ 88] = ASN1_OP_RETURN,
> +
> + [ 89] = ASN1_OP_MATCH, // registeredID
> + [ 90] = _tag(UNIV, PRIM, OID),
> + [ 91] = ASN1_OP_END_SEQ,
> + [ 92] = ASN1_OP_RETURN,
> +};
> +
> +const struct asn1_decoder x509_akid_decoder = {
> + .machine = x509_akid_machine,
> + .machlen = sizeof(x509_akid_machine),
> + .actions = x509_akid_action_table,
> +};
> diff --git a/backport/compat/verification/x509_akid-asn1.h b/backport/compat/verification/x509_akid-asn1.h
> new file mode 100644
> index 000000000000..92914da56a9b
> --- /dev/null
> +++ b/backport/compat/verification/x509_akid-asn1.h
> @@ -0,0 +1,15 @@
> +/*
> + * Automatically generated by asn1_compiler. Do not edit
> + *
> + * ASN.1 parser for x509_akid
> + */
> +#include <linux/asn1_decoder.h>
> +
> +extern const struct asn1_decoder x509_akid_decoder;
> +
> +extern int x509_akid_note_kid(void *, size_t, unsigned char, const void *, size_t);
> +extern int x509_akid_note_name(void *, size_t, unsigned char, const void *, size_t);
> +extern int x509_akid_note_serial(void *, size_t, unsigned char, const void *, size_t);
> +extern int x509_extract_name_segment(void *, size_t, unsigned char, const void *, size_t);
> +extern int x509_note_OID(void *, size_t, unsigned char, const void *, size_t);
> +
> diff --git a/copy-list b/copy-list
> index 0bd232f44b56..d36caea39f6d 100644
> --- a/copy-list
> +++ b/copy-list
> @@ -61,6 +61,19 @@ include/net/codel_qdisc.h
> include/net/fq.h
> include/net/fq_impl.h
>
> +# signature verification code
> +include/linux/asn1.h
> +include/linux/asn1_ber_bytecode.h
> +include/linux/oid_registry.h
> +lib/build_OID_registry -> compat/build_OID_registry
> +crypto/asymmetric_keys/pkcs7_parser.c -> compat/verification/pkcs7_parser.c
> +crypto/asymmetric_keys/pkcs7_parser.h -> compat/verification/pkcs7_parser.h
> +crypto/asymmetric_keys/pkcs7_trust.c -> compat/verification/pkcs7_trust.c
> +crypto/asymmetric_keys/pkcs7_verify.c -> compat/verification/pkcs7_verify.c
> +crypto/asymmetric_keys/x509_cert_parser.c -> compat/verification/x509_cert_parser.c
> +crypto/asymmetric_keys/x509_parser.h -> compat/verification/x509_parser.h
> +crypto/asymmetric_keys/x509_public_key.c -> compat/verification/x509_public_key.c
> +
> net/Makefile
> net/Kconfig
> net/wireless/
> diff --git a/patches/verify.patch b/patches/verify.patch
> new file mode 100644
> index 000000000000..dbb5600ec74e
> --- /dev/null
> +++ b/patches/verify.patch
> @@ -0,0 +1,86 @@
> +--- a/compat/verification/pkcs7_trust.c
> ++++ b/compat/verification/pkcs7_trust.c
> +@@ -115,7 +115,7 @@ static int pkcs7_validate_trust_one(struct pkcs7_message *pkcs7,
> + return -ENOKEY;
> +
> + matched:
> +- ret = verify_signature(key, sig);
> ++ ret = public_key_verify_signature(key->public_key, sig);
> + key_put(key);
> + if (ret < 0) {
> + if (ret == -ENOMEM)
> +--- a/compat/verification/x509_public_key.c
> ++++ b/compat/verification/x509_public_key.c
> +@@ -13,11 +13,8 @@
> + #include <linux/module.h>
> + #include <linux/kernel.h>
> + #include <linux/slab.h>
> +-#include <keys/asymmetric-subtype.h>
> +-#include <keys/asymmetric-parser.h>
> + #include <keys/system_keyring.h>
> + #include <crypto/hash.h>
> +-#include "asymmetric_keys.h"
> + #include "x509_parser.h"
> +
> + /*
> +@@ -159,6 +156,7 @@ not_self_signed:
> + return 0;
> + }
> +
> ++#if 0
> + /*
> + * Attempt to parse a data blob for a key as an X509 certificate.
> + */
> +@@ -276,3 +274,4 @@ module_exit(x509_key_exit);
> +
> + MODULE_DESCRIPTION("X.509 certificate parser");
> + MODULE_LICENSE("GPL");
> ++#endif
> +--- a/include/crypto/pkcs7.h
> ++++ b/include/crypto/pkcs7.h
> +@@ -2,5 +2,10 @@
> + #ifndef CPTCFG_BPAUTO_PKCS7
> + #include_next <crypto/pkcs7.h>
> + #else
> ++#define pkcs7_verify LINUX_BACKPORT(pkcs7_verify)
> ++#define pkcs7_get_content_data LINUX_BACKPORT(pkcs7_get_content_data)
> ++#define pkcs7_parse_message LINUX_BACKPORT(pkcs7_parse_message)
> ++#define pkcs7_free_message LINUX_BACKPORT(pkcs7_free_message)
> ++#define pkcs7_validate_trust LINUX_BACKPORT(pkcs7_validate_trust)
> + #include <crypto/backport-pkcs7.h>
> + #endif /* CPTCFG_BPAUTO_PKCS7 */
> +--- a/compat/verification/x509_parser.h
> ++++ b/compat/verification/x509_parser.h
> +@@ -13,6 +13,10 @@
> + #include <crypto/public_key.h>
> + #include <keys/asymmetric-type.h>
> +
> ++#define x509_decode_time LINUX_BACKPORT(x509_decode_time)
> ++#define x509_cert_parse LINUX_BACKPORT(x509_cert_parse)
> ++#define x509_free_certificate LINUX_BACKPORT(x509_free_certificate)
> ++
> + struct x509_certificate {
> + struct x509_certificate *next;
> + struct x509_certificate *signer; /* Certificate that signed this one */
> +--- a/net/wireless/Makefile
> ++++ b/net/wireless/Makefile
> +@@ -22,7 +22,7 @@ ifneq ($(CPTCFG_CFG80211_EXTRA_REGDB_KEYDIR),)
> + cfg80211-y += extra-certs.o
> + endif
> +
> +-$(obj)/shipped-certs.c: $(wildcard $(srctree)/$(src)/certs/*.x509)
> ++$(obj)/shipped-certs.c: $(wildcard $(src)/certs/*.x509)
> + @echo " GEN $@"
> + @echo '#include "reg.h"' > $@
> + @echo 'const u8 shipped_regdb_certs[] = {' >> $@
> +--- a/compat/verification/pkcs7_verify.c
> ++++ b/compat/verification/pkcs7_verify.c
> +@@ -150,7 +150,7 @@
> + pr_devel("Sig %u: Found cert serial match X.509[%u]\n",
> + sinfo->index, certix);
> +
> +- if (x509->pub->pkey_algo != sinfo->sig->pkey_algo) {
> ++ if (strcmp(x509->pub->pkey_algo, sinfo->sig->pkey_algo)) {
> + pr_warn("Sig %u: X.509 algo and PKCS#7 sig algo don't match\n",
> + sinfo->index);
> + continue;
>
--
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