From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48223) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d1pMA-0003fD-Ec for qemu-devel@nongnu.org; Sat, 22 Apr 2017 03:21:24 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d1pM7-0003pI-6r for qemu-devel@nongnu.org; Sat, 22 Apr 2017 03:21:22 -0400 Received: from szxga02-in.huawei.com ([45.249.212.188]:3458 helo=dggrg02-dlp.huawei.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_ARCFOUR_SHA1:16) (Exim 4.71) (envelope-from ) id 1d1pM6-0003ng-CW for qemu-devel@nongnu.org; Sat, 22 Apr 2017 03:21:19 -0400 From: "Longpeng(Mike)" Date: Sat, 22 Apr 2017 15:20:23 +0800 Message-ID: <1492845627-4384-15-git-send-email-longpeng2@huawei.com> In-Reply-To: <1492845627-4384-1-git-send-email-longpeng2@huawei.com> References: <1492845627-4384-1-git-send-email-longpeng2@huawei.com> MIME-Version: 1.0 Content-Type: text/plain Subject: [Qemu-devel] [PATCH v3 14/18] crypto: hash: add afalg-backend hash support List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: berrange@redhat.com Cc: arei.gonglei@huawei.com, longpeng.mike@gmail.com, qemu-devel@nongnu.org, weidong.huang@huawei.com, "Longpeng(Mike)" Adds afalg-backend hash support: introduces some private APIs firstly, and then intergrates them into qcrypto_hash_afalg_driver. Signed-off-by: Longpeng(Mike) --- crypto/Makefile.objs | 1 + crypto/afalgpriv.h | 1 + crypto/hash-afalg.c | 147 +++++++++++++++++++++++++++++++++++++++++++++++++++ crypto/hash.c | 11 ++++ crypto/hashpriv.h | 4 ++ 5 files changed, 164 insertions(+) create mode 100644 crypto/hash-afalg.c diff --git a/crypto/Makefile.objs b/crypto/Makefile.objs index d2e8fa8..2b99e08 100644 --- a/crypto/Makefile.objs +++ b/crypto/Makefile.objs @@ -12,6 +12,7 @@ crypto-obj-y += desrfb.o crypto-obj-y += cipher.o crypto-obj-$(CONFIG_AF_ALG) += afalg.o crypto-obj-$(CONFIG_AF_ALG) += cipher-afalg.o +crypto-obj-$(CONFIG_AF_ALG) += hash-afalg.o crypto-obj-y += tlscreds.o crypto-obj-y += tlscredsanon.o crypto-obj-y += tlscredsx509.o diff --git a/crypto/afalgpriv.h b/crypto/afalgpriv.h index e384b15..a0950db 100644 --- a/crypto/afalgpriv.h +++ b/crypto/afalgpriv.h @@ -26,6 +26,7 @@ #endif #define AFALG_TYPE_CIPHER "skcipher" +#define AFALG_TYPE_HASH "hash" #define ALG_OPTYPE_LEN 4 #define ALG_MSGIV_LEN(len) (sizeof(struct af_alg_iv) + (len)) diff --git a/crypto/hash-afalg.c b/crypto/hash-afalg.c new file mode 100644 index 0000000..f577c83 --- /dev/null +++ b/crypto/hash-afalg.c @@ -0,0 +1,147 @@ +/* + * QEMU Crypto af_alg-backend hash support + * + * Copyright (c) 2017 HUAWEI TECHNOLOGIES CO., LTD. + * + * Authors: + * Longpeng(Mike) + * + * This work is licensed under the terms of the GNU GPL, version 2 or + * (at your option) any later version. See the COPYING file in the + * top-level directory. + */ +#include "qemu/osdep.h" +#include "qemu/iov.h" +#include "qemu/sockets.h" +#include "qemu-common.h" +#include "qapi/error.h" +#include "crypto/hash.h" +#include "hashpriv.h" + +static char * +qcrypto_afalg_hash_format_name(QCryptoHashAlgorithm alg, + Error **errp) +{ + char *name; + const char *alg_name; + int ret; + + switch (alg) { + case QCRYPTO_HASH_ALG_MD5: + alg_name = "md5"; + break; + case QCRYPTO_HASH_ALG_SHA1: + alg_name = "sha1"; + break; + case QCRYPTO_HASH_ALG_SHA224: + alg_name = "sha224"; + break; + case QCRYPTO_HASH_ALG_SHA256: + alg_name = "sha256"; + break; + case QCRYPTO_HASH_ALG_SHA384: + alg_name = "sha384"; + break; + case QCRYPTO_HASH_ALG_SHA512: + alg_name = "sha512"; + break; + case QCRYPTO_HASH_ALG_RIPEMD160: + alg_name = "rmd160"; + break; + + default: + error_setg(errp, "Unsupported hash algorithm %d", alg); + return NULL; + } + + name = g_new0(char, SALG_NAME_LEN_MAX); + ret = snprintf(name, SALG_NAME_LEN_MAX, "%s", alg_name); + if (ret < 0 || ret >= SALG_NAME_LEN_MAX) { + error_setg(errp, "Build hash name(name='%s') failed", + alg_name); + g_free(name); + return NULL; + } + + return name; +} + +static QCryptoAFAlg * +qcrypto_afalg_hash_ctx_new(QCryptoHashAlgorithm alg, Error **errp) +{ + QCryptoAFAlg *afalg; + char *name; + + name = qcrypto_afalg_hash_format_name(alg, errp); + if (!name) { + return NULL; + } + + afalg = qcrypto_afalg_comm_alloc(AFALG_TYPE_HASH, name, errp); + if (!afalg) { + g_free(name); + return NULL; + } + afalg->name = name; + + /* prepare msg header */ + afalg->msg = g_new0(struct msghdr, 1); + + return afalg; +} + +static int +qcrypto_afalg_hash_bytesv(QCryptoHashAlgorithm alg, + const struct iovec *iov, + size_t niov, uint8_t **result, + size_t *resultlen, + Error **errp) +{ + QCryptoAFAlg *afalg; + struct iovec outv; + int ret = 0; + const int except_len = qcrypto_hash_digest_len(alg); + + if (*resultlen == 0) { + *resultlen = except_len; + *result = g_new0(uint8_t, *resultlen); + } else if (*resultlen != except_len) { + error_setg(errp, + "Result buffer size %zu is not match hash %d", + *resultlen, except_len); + return -1; + } + + afalg = qcrypto_afalg_hash_ctx_new(alg, errp); + if (afalg == NULL) { + return -1; + } + + /* send data to kernel's crypto core */ + ret = iov_send_recv(afalg->opfd, iov, niov, + 0, iov_size(iov, niov), true); + if (ret < 0) { + error_setg_errno(errp, errno, "Send data to afalg-core failed"); + goto out; + } + + /* hash && get result */ + outv.iov_base = *result; + outv.iov_len = *resultlen; + afalg->msg->msg_iov = &outv; + afalg->msg->msg_iovlen = 1; + ret = recvmsg(afalg->opfd, afalg->msg, 0); + if (ret != -1) { + ret = 0; + } else { + error_setg_errno(errp, errno, "Recv result from afalg-core failed"); + } + +out: + qcrypto_afalg_comm_free(afalg); + return ret; +} + +QCryptoHashDriver qcrypto_hash_afalg_driver = { + .hash_bytesv = qcrypto_afalg_hash_bytesv, +}; diff --git a/crypto/hash.c b/crypto/hash.c index c43fd87..ba30c9b 100644 --- a/crypto/hash.c +++ b/crypto/hash.c @@ -46,6 +46,17 @@ int qcrypto_hash_bytesv(QCryptoHashAlgorithm alg, size_t *resultlen, Error **errp) { +#ifdef CONFIG_AF_ALG + int ret; + + ret = qcrypto_hash_afalg_driver.hash_bytesv(alg, iov, niov, + result, resultlen, + errp); + if (ret == 0) { + return ret; + } +#endif + return qcrypto_hash_lib_driver.hash_bytesv(alg, iov, niov, result, resultlen, errp); diff --git a/crypto/hashpriv.h b/crypto/hashpriv.h index 5e505e0..d23662f 100644 --- a/crypto/hashpriv.h +++ b/crypto/hashpriv.h @@ -15,6 +15,8 @@ #ifndef QCRYPTO_HASHPRIV_H #define QCRYPTO_HASHPRIV_H +#include "afalgpriv.h" + typedef struct QCryptoHashDriver QCryptoHashDriver; struct QCryptoHashDriver { @@ -28,4 +30,6 @@ struct QCryptoHashDriver { extern QCryptoHashDriver qcrypto_hash_lib_driver; +extern QCryptoHashDriver qcrypto_hash_afalg_driver; + #endif -- 1.8.3.1