From: Chuck Lever <cel@kernel.org>
To: linux-nfs@vger.kernel.org
Cc: dhowells@redhat.com, simo@redhat.com, linux-kselftest@vger.kernel.org
Subject: [PATCH v2 30/41] SUNRPC: Move remaining internal definitions to gss_krb5_internal.h
Date: Sun, 15 Jan 2023 12:23:27 -0500 [thread overview]
Message-ID: <167380340784.10651.13072870050177651658.stgit@bazille.1015granger.net> (raw)
In-Reply-To: <167380196429.10651.4103075913257868035.stgit@bazille.1015granger.net>
From: Chuck Lever <chuck.lever@oracle.com>
The goal is to leave only protocol-defined items in gss_krb5.h so
that it can be easily replaced by a generic header. Implementation
specific items are moved to the new internal header.
Tested-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
include/linux/sunrpc/gss_krb5.h | 117 -------------------------------
net/sunrpc/auth_gss/auth_gss.c | 17 +++++
net/sunrpc/auth_gss/gss_krb5_crypto.c | 1
net/sunrpc/auth_gss/gss_krb5_internal.h | 94 +++++++++++++++++++++++++
4 files changed, 111 insertions(+), 118 deletions(-)
diff --git a/include/linux/sunrpc/gss_krb5.h b/include/linux/sunrpc/gss_krb5.h
index cbb6c8192890..78a80bf3fdcb 100644
--- a/include/linux/sunrpc/gss_krb5.h
+++ b/include/linux/sunrpc/gss_krb5.h
@@ -42,12 +42,6 @@
#include <linux/sunrpc/gss_err.h>
#include <linux/sunrpc/gss_asn1.h>
-/*
- * The RFCs often specify payload lengths in bits. This helper
- * converts a specified bit-length to the number of octets/bytes.
- */
-#define BITS2OCTETS(x) ((x) / 8)
-
/* Length of constant used in key derivation */
#define GSS_KRB5_K5CLENGTH (5)
@@ -60,74 +54,6 @@
/* Maximum blocksize for the supported crypto algorithms */
#define GSS_KRB5_MAX_BLOCKSIZE (16)
-struct krb5_ctx;
-
-struct gss_krb5_enctype {
- const u32 etype; /* encryption (key) type */
- const u32 ctype; /* checksum type */
- const char *name; /* "friendly" name */
- const char *encrypt_name; /* crypto encrypt name */
- const char *aux_cipher; /* aux encrypt cipher name */
- const char *cksum_name; /* crypto checksum name */
- const u16 signalg; /* signing algorithm */
- const u16 sealalg; /* sealing algorithm */
- const u32 cksumlength; /* checksum length */
- const u32 keyed_cksum; /* is it a keyed cksum? */
- const u32 keybytes; /* raw key len, in bytes */
- const u32 keylength; /* protocol key length, in octets */
- const u32 Kc_length; /* checksum subkey length, in octets */
- const u32 Ke_length; /* encryption subkey length, in octets */
- const u32 Ki_length; /* integrity subkey length, in octets */
-
- int (*import_ctx)(struct krb5_ctx *ctx, gfp_t gfp_mask);
- int (*derive_key)(const struct gss_krb5_enctype *gk5e,
- const struct xdr_netobj *in,
- struct xdr_netobj *out,
- const struct xdr_netobj *label,
- gfp_t gfp_mask);
- u32 (*encrypt)(struct krb5_ctx *kctx, u32 offset,
- struct xdr_buf *buf, struct page **pages);
- u32 (*decrypt)(struct krb5_ctx *kctx, u32 offset, u32 len,
- struct xdr_buf *buf, u32 *headskip, u32 *tailskip);
- u32 (*get_mic)(struct krb5_ctx *kctx, struct xdr_buf *text,
- struct xdr_netobj *token);
- u32 (*verify_mic)(struct krb5_ctx *kctx, struct xdr_buf *message_buffer,
- struct xdr_netobj *read_token);
- u32 (*wrap)(struct krb5_ctx *kctx, int offset,
- struct xdr_buf *buf, struct page **pages);
- u32 (*unwrap)(struct krb5_ctx *kctx, int offset, int len,
- struct xdr_buf *buf, unsigned int *slack,
- unsigned int *align);
-};
-
-/* krb5_ctx flags definitions */
-#define KRB5_CTX_FLAG_INITIATOR 0x00000001
-#define KRB5_CTX_FLAG_CFX 0x00000002
-#define KRB5_CTX_FLAG_ACCEPTOR_SUBKEY 0x00000004
-
-struct krb5_ctx {
- int initiate; /* 1 = initiating, 0 = accepting */
- u32 enctype;
- u32 flags;
- const struct gss_krb5_enctype *gk5e; /* enctype-specific info */
- struct crypto_sync_skcipher *enc;
- struct crypto_sync_skcipher *seq;
- struct crypto_sync_skcipher *acceptor_enc;
- struct crypto_sync_skcipher *initiator_enc;
- struct crypto_sync_skcipher *acceptor_enc_aux;
- struct crypto_sync_skcipher *initiator_enc_aux;
- struct crypto_ahash *acceptor_sign;
- struct crypto_ahash *initiator_sign;
- struct crypto_ahash *initiator_integ;
- struct crypto_ahash *acceptor_integ;
- u8 Ksess[GSS_KRB5_MAX_KEYLEN]; /* session key */
- u8 cksum[GSS_KRB5_MAX_KEYLEN];
- atomic_t seq_send;
- atomic64_t seq_send64;
- time64_t endtime;
- struct xdr_netobj mech_used;
-};
-
/* The length of the Kerberos GSS token header */
#define GSS_KRB5_TOK_HDR_LEN (16)
@@ -245,47 +171,4 @@ enum seal_alg {
#define KG_USAGE_INITIATOR_SEAL (24)
#define KG_USAGE_INITIATOR_SIGN (25)
-/*
- * This compile-time check verifies that we will not exceed the
- * slack space allotted by the client and server auth_gss code
- * before they call gss_wrap().
- */
-#define GSS_KRB5_MAX_SLACK_NEEDED \
- (GSS_KRB5_TOK_HDR_LEN /* gss token header */ \
- + GSS_KRB5_MAX_CKSUM_LEN /* gss token checksum */ \
- + GSS_KRB5_MAX_BLOCKSIZE /* confounder */ \
- + GSS_KRB5_MAX_BLOCKSIZE /* possible padding */ \
- + GSS_KRB5_TOK_HDR_LEN /* encrypted hdr in v2 token */\
- + GSS_KRB5_MAX_CKSUM_LEN /* encryption hmac */ \
- + 4 + 4 /* RPC verifier */ \
- + GSS_KRB5_TOK_HDR_LEN \
- + GSS_KRB5_MAX_CKSUM_LEN)
-
-u32
-make_checksum(struct krb5_ctx *kctx, char *header, int hdrlen,
- struct xdr_buf *body, int body_offset, u8 *cksumkey,
- unsigned int usage, struct xdr_netobj *cksumout);
-
-int
-gss_encrypt_xdr_buf(struct crypto_sync_skcipher *tfm, struct xdr_buf *outbuf,
- int offset, struct page **pages);
-
-int
-gss_decrypt_xdr_buf(struct crypto_sync_skcipher *tfm, struct xdr_buf *inbuf,
- int offset);
-
-s32
-krb5_make_seq_num(struct krb5_ctx *kctx,
- struct crypto_sync_skcipher *key,
- int direction,
- u32 seqnum, unsigned char *cksum, unsigned char *buf);
-
-s32
-krb5_get_seq_num(struct krb5_ctx *kctx,
- unsigned char *cksum,
- unsigned char *buf, int *direction, u32 *seqnum);
-
-int
-xdr_extend_head(struct xdr_buf *buf, unsigned int base, unsigned int shiftlen);
-
#endif /* _LINUX_SUNRPC_GSS_KRB5_H */
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index 2d7b1e03110a..1af71fbb0d80 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -49,6 +49,22 @@ static unsigned int gss_key_expire_timeo = GSS_KEY_EXPIRE_TIMEO;
# define RPCDBG_FACILITY RPCDBG_AUTH
#endif
+/*
+ * This compile-time check verifies that we will not exceed the
+ * slack space allotted by the client and server auth_gss code
+ * before they call gss_wrap().
+ */
+#define GSS_KRB5_MAX_SLACK_NEEDED \
+ (GSS_KRB5_TOK_HDR_LEN /* gss token header */ \
+ + GSS_KRB5_MAX_CKSUM_LEN /* gss token checksum */ \
+ + GSS_KRB5_MAX_BLOCKSIZE /* confounder */ \
+ + GSS_KRB5_MAX_BLOCKSIZE /* possible padding */ \
+ + GSS_KRB5_TOK_HDR_LEN /* encrypted hdr in v2 token */ \
+ + GSS_KRB5_MAX_CKSUM_LEN /* encryption hmac */ \
+ + XDR_UNIT * 2 /* RPC verifier */ \
+ + GSS_KRB5_TOK_HDR_LEN \
+ + GSS_KRB5_MAX_CKSUM_LEN)
+
#define GSS_CRED_SLACK (RPC_MAX_AUTH_SIZE * 2)
/* length of a krb5 verifier (48), plus data added before arguments when
* using integrity (two 4-byte integers): */
@@ -1042,6 +1058,7 @@ gss_create_new(const struct rpc_auth_create_args *args, struct rpc_clnt *clnt)
goto err_put_mech;
auth = &gss_auth->rpc_auth;
auth->au_cslack = GSS_CRED_SLACK >> 2;
+ BUILD_BUG_ON(GSS_KRB5_MAX_SLACK_NEEDED > RPC_MAX_AUTH_SIZE);
auth->au_rslack = GSS_KRB5_MAX_SLACK_NEEDED >> 2;
auth->au_verfsize = GSS_VERF_SLACK >> 2;
auth->au_ralign = GSS_VERF_SLACK >> 2;
diff --git a/net/sunrpc/auth_gss/gss_krb5_crypto.c b/net/sunrpc/auth_gss/gss_krb5_crypto.c
index 4f29216d414a..5c811b554fd1 100644
--- a/net/sunrpc/auth_gss/gss_krb5_crypto.c
+++ b/net/sunrpc/auth_gss/gss_krb5_crypto.c
@@ -572,7 +572,6 @@ xdr_extend_head(struct xdr_buf *buf, unsigned int base, unsigned int shiftlen)
if (shiftlen == 0)
return 0;
- BUILD_BUG_ON(GSS_KRB5_MAX_SLACK_NEEDED > RPC_MAX_AUTH_SIZE);
BUG_ON(shiftlen > RPC_MAX_AUTH_SIZE);
p = buf->head[0].iov_base + base;
diff --git a/net/sunrpc/auth_gss/gss_krb5_internal.h b/net/sunrpc/auth_gss/gss_krb5_internal.h
index c955e7b76c4d..850748f6733a 100644
--- a/net/sunrpc/auth_gss/gss_krb5_internal.h
+++ b/net/sunrpc/auth_gss/gss_krb5_internal.h
@@ -8,6 +8,79 @@
#ifndef _NET_SUNRPC_AUTH_GSS_KRB5_INTERNAL_H
#define _NET_SUNRPC_AUTH_GSS_KRB5_INTERNAL_H
+/*
+ * The RFCs often specify payload lengths in bits. This helper
+ * converts a specified bit-length to the number of octets/bytes.
+ */
+#define BITS2OCTETS(x) ((x) / 8)
+
+struct krb5_ctx;
+
+struct gss_krb5_enctype {
+ const u32 etype; /* encryption (key) type */
+ const u32 ctype; /* checksum type */
+ const char *name; /* "friendly" name */
+ const char *encrypt_name; /* crypto encrypt name */
+ const char *aux_cipher; /* aux encrypt cipher name */
+ const char *cksum_name; /* crypto checksum name */
+ const u16 signalg; /* signing algorithm */
+ const u16 sealalg; /* sealing algorithm */
+ const u32 cksumlength; /* checksum length */
+ const u32 keyed_cksum; /* is it a keyed cksum? */
+ const u32 keybytes; /* raw key len, in bytes */
+ const u32 keylength; /* protocol key length, in octets */
+ const u32 Kc_length; /* checksum subkey length, in octets */
+ const u32 Ke_length; /* encryption subkey length, in octets */
+ const u32 Ki_length; /* integrity subkey length, in octets */
+
+ int (*import_ctx)(struct krb5_ctx *ctx, gfp_t gfp_mask);
+ int (*derive_key)(const struct gss_krb5_enctype *gk5e,
+ const struct xdr_netobj *in,
+ struct xdr_netobj *out,
+ const struct xdr_netobj *label,
+ gfp_t gfp_mask);
+ u32 (*encrypt)(struct krb5_ctx *kctx, u32 offset,
+ struct xdr_buf *buf, struct page **pages);
+ u32 (*decrypt)(struct krb5_ctx *kctx, u32 offset, u32 len,
+ struct xdr_buf *buf, u32 *headskip, u32 *tailskip);
+ u32 (*get_mic)(struct krb5_ctx *kctx, struct xdr_buf *text,
+ struct xdr_netobj *token);
+ u32 (*verify_mic)(struct krb5_ctx *kctx, struct xdr_buf *message_buffer,
+ struct xdr_netobj *read_token);
+ u32 (*wrap)(struct krb5_ctx *kctx, int offset,
+ struct xdr_buf *buf, struct page **pages);
+ u32 (*unwrap)(struct krb5_ctx *kctx, int offset, int len,
+ struct xdr_buf *buf, unsigned int *slack,
+ unsigned int *align);
+};
+
+/* krb5_ctx flags definitions */
+#define KRB5_CTX_FLAG_INITIATOR 0x00000001
+#define KRB5_CTX_FLAG_ACCEPTOR_SUBKEY 0x00000004
+
+struct krb5_ctx {
+ int initiate; /* 1 = initiating, 0 = accepting */
+ u32 enctype;
+ u32 flags;
+ const struct gss_krb5_enctype *gk5e; /* enctype-specific info */
+ struct crypto_sync_skcipher *enc;
+ struct crypto_sync_skcipher *seq;
+ struct crypto_sync_skcipher *acceptor_enc;
+ struct crypto_sync_skcipher *initiator_enc;
+ struct crypto_sync_skcipher *acceptor_enc_aux;
+ struct crypto_sync_skcipher *initiator_enc_aux;
+ struct crypto_ahash *acceptor_sign;
+ struct crypto_ahash *initiator_sign;
+ struct crypto_ahash *initiator_integ;
+ struct crypto_ahash *acceptor_integ;
+ u8 Ksess[GSS_KRB5_MAX_KEYLEN]; /* session key */
+ u8 cksum[GSS_KRB5_MAX_KEYLEN];
+ atomic_t seq_send;
+ atomic64_t seq_send64;
+ time64_t endtime;
+ struct xdr_netobj mech_used;
+};
+
/*
* GSS Kerberos 5 mechanism Per-Message calls.
*/
@@ -96,8 +169,19 @@ static inline int krb5_derive_key(struct krb5_ctx *kctx,
return gk5e->derive_key(gk5e, inkey, outkey, &label, gfp_mask);
}
+s32 krb5_make_seq_num(struct krb5_ctx *kctx, struct crypto_sync_skcipher *key,
+ int direction, u32 seqnum, unsigned char *cksum,
+ unsigned char *buf);
+
+s32 krb5_get_seq_num(struct krb5_ctx *kctx, unsigned char *cksum,
+ unsigned char *buf, int *direction, u32 *seqnum);
+
void krb5_make_confounder(u8 *p, int conflen);
+u32 make_checksum(struct krb5_ctx *kctx, char *header, int hdrlen,
+ struct xdr_buf *body, int body_offset, u8 *cksumkey,
+ unsigned int usage, struct xdr_netobj *cksumout);
+
u32 gss_krb5_checksum(struct crypto_ahash *tfm, char *header, int hdrlen,
const struct xdr_buf *body, int body_offset,
struct xdr_netobj *cksumout);
@@ -108,6 +192,16 @@ u32 krb5_encrypt(struct crypto_sync_skcipher *key, void *iv, void *in,
u32 krb5_decrypt(struct crypto_sync_skcipher *key, void *iv, void *in,
void *out, int length);
+int xdr_extend_head(struct xdr_buf *buf, unsigned int base,
+ unsigned int shiftlen);
+
+int gss_encrypt_xdr_buf(struct crypto_sync_skcipher *tfm,
+ struct xdr_buf *outbuf, int offset,
+ struct page **pages);
+
+int gss_decrypt_xdr_buf(struct crypto_sync_skcipher *tfm,
+ struct xdr_buf *inbuf, int offset);
+
u32 gss_krb5_aes_encrypt(struct krb5_ctx *kctx, u32 offset,
struct xdr_buf *buf, struct page **pages);
next prev parent reply other threads:[~2023-01-15 17:23 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-15 17:20 [PATCH v2 00/41] RPCSEC GSS krb5 enhancements Chuck Lever
2023-01-15 17:20 ` [PATCH v2 01/41] SUNRPC: Add header ifdefs to linux/sunrpc/gss_krb5.h Chuck Lever
2023-01-15 17:20 ` [PATCH v2 02/41] SUNRPC: Remove .blocksize field from struct gss_krb5_enctype Chuck Lever
2023-01-15 17:20 ` [PATCH v2 03/41] SUNRPC: Remove .conflen " Chuck Lever
2023-01-15 17:20 ` [PATCH v2 04/41] SUNRPC: Improve Kerberos confounder generation Chuck Lever
2023-01-15 17:20 ` [PATCH v2 05/41] SUNRPC: Obscure Kerberos session key Chuck Lever
2023-01-15 17:20 ` [PATCH v2 06/41] SUNRPC: Refactor set-up for aux_cipher Chuck Lever
2023-01-15 17:21 ` [PATCH v2 07/41] SUNRPC: Obscure Kerberos encryption keys Chuck Lever
2023-01-15 17:21 ` [PATCH v2 08/41] SUNRPC: Obscure Kerberos signing keys Chuck Lever
2023-01-15 17:21 ` [PATCH v2 09/41] SUNRPC: Obscure Kerberos integrity keys Chuck Lever
2023-01-15 17:21 ` [PATCH v2 10/41] SUNRPC: Refactor the GSS-API Per Message calls in the Kerberos mechanism Chuck Lever
2023-01-15 17:21 ` [PATCH v2 11/41] SUNRPC: Remove another switch on ctx->enctype Chuck Lever
2023-01-15 17:21 ` [PATCH v2 12/41] SUNRPC: Add /proc/net/rpc/gss_krb5_enctypes file Chuck Lever
2023-01-15 17:21 ` [PATCH v2 13/41] NFSD: Replace /proc/fs/nfsd/supported_krb5_enctypes with a symlink Chuck Lever
2023-01-15 17:21 ` [PATCH v2 14/41] SUNRPC: Replace KRB5_SUPPORTED_ENCTYPES macro Chuck Lever
2023-01-15 17:21 ` [PATCH v2 15/41] SUNRPC: Enable rpcsec_gss_krb5.ko to be built without CRYPTO_DES Chuck Lever
2023-03-06 8:16 ` Geert Uytterhoeven
2023-03-06 16:17 ` Chuck Lever III
2023-03-06 18:01 ` Geert Uytterhoeven
2023-01-15 17:21 ` [PATCH v2 16/41] SUNRPC: Remove ->encrypt and ->decrypt methods from struct gss_krb5_enctype Chuck Lever
2023-01-15 17:22 ` [PATCH v2 17/41] SUNRPC: Rename .encrypt_v2 and .decrypt_v2 methods Chuck Lever
2023-01-15 17:22 ` [PATCH v2 18/41] SUNRPC: Hoist KDF into struct gss_krb5_enctype Chuck Lever
2023-01-15 17:22 ` [PATCH v2 19/41] SUNRPC: Clean up cipher set up for v1 encryption types Chuck Lever
2023-01-15 17:22 ` [PATCH v2 20/41] SUNRPC: Parametrize the key length passed to context_v2_alloc_cipher() Chuck Lever
2023-01-15 17:22 ` [PATCH v2 21/41] SUNRPC: Add new subkey length fields Chuck Lever
2023-01-15 17:22 ` [PATCH v2 22/41] SUNRPC: Refactor CBC with CTS into helpers Chuck Lever
2023-01-15 17:22 ` [PATCH v2 23/41] SUNRPC: Add gk5e definitions for RFC 8009 encryption types Chuck Lever
2023-03-22 15:49 ` Anna Schumaker
2023-03-22 16:30 ` Chuck Lever III
2023-03-22 17:06 ` Anna Schumaker
2023-03-22 17:18 ` Anna Schumaker
2023-01-15 17:22 ` [PATCH v2 24/41] SUNRPC: Add KDF-HMAC-SHA2 Chuck Lever
2023-01-15 17:22 ` [PATCH v2 25/41] SUNRPC: Add RFC 8009 encryption and decryption functions Chuck Lever
2023-01-15 17:23 ` [PATCH v2 26/41] SUNRPC: Advertise support for RFC 8009 encryption types Chuck Lever
2023-01-15 17:23 ` [PATCH v2 27/41] SUNRPC: Support the Camellia enctypes Chuck Lever
2023-01-15 17:23 ` [PATCH v2 28/41] SUNRPC: Add KDF_FEEDBACK_CMAC Chuck Lever
2023-01-15 17:23 ` [PATCH v2 29/41] SUNRPC: Advertise support for the Camellia encryption types Chuck Lever
2023-01-15 17:23 ` Chuck Lever [this message]
2023-01-15 17:23 ` [PATCH v2 31/41] SUNRPC: Add KUnit tests for rpcsec_krb5.ko Chuck Lever
2023-01-15 17:23 ` [PATCH v2 32/41] SUNRPC: Export get_gss_krb5_enctype() Chuck Lever
2023-01-15 17:23 ` [PATCH v2 33/41] SUNRPC: Add KUnit tests RFC 3961 Key Derivation Chuck Lever
2023-01-15 17:23 ` [PATCH v2 34/41] SUNRPC: Add Kunit tests for RFC 3962-defined encryption/decryption Chuck Lever
2023-01-15 17:23 ` [PATCH v2 35/41] SUNRPC: Add KDF KUnit tests for the RFC 6803 encryption types Chuck Lever
2023-01-15 17:24 ` [PATCH v2 36/41] SUNRPC: Add checksum " Chuck Lever
2023-01-15 17:24 ` [PATCH v2 37/41] SUNRPC: Add encryption " Chuck Lever
2023-01-15 17:24 ` [PATCH v2 38/41] SUNRPC: Add KDF-HMAC-SHA2 Kunit tests Chuck Lever
2023-01-15 17:24 ` [PATCH v2 39/41] SUNRPC: Add RFC 8009 checksum KUnit tests Chuck Lever
2023-01-15 17:24 ` [PATCH v2 40/41] SUNRPC: Add RFC 8009 encryption " Chuck Lever
2023-01-15 17:24 ` [PATCH v2 41/41] SUNRPC: Add encryption self-tests Chuck Lever
2023-01-18 16:02 ` [PATCH v2 00/41] RPCSEC GSS krb5 enhancements Simo Sorce
2023-01-18 17:16 ` Chuck Lever III
2023-02-23 13:05 ` Geert Uytterhoeven
2023-02-23 14:00 ` Chuck Lever III
2023-02-23 15:16 ` Geert Uytterhoeven
2023-02-23 16:18 ` Chuck Lever III
2023-02-23 16:52 ` Geert Uytterhoeven
2023-02-23 19:32 ` Chuck Lever III
2023-02-27 9:51 ` Geert Uytterhoeven
2023-02-27 15:06 ` Chuck Lever III
2023-02-27 15:37 ` Geert Uytterhoeven
2023-02-23 17:57 ` Andreas Schwab
2023-02-23 18:19 ` Michael Schmitz
2023-02-23 21:46 ` Andreas Schwab
2023-02-23 22:17 ` Michael Schmitz
2023-02-23 18:28 ` Eero Tamminen
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