diff options
| -rw-r--r-- | crypto/Makefile.objs | 1 | ||||
| -rw-r--r-- | crypto/afalgpriv.h | 1 | ||||
| -rw-r--r-- | crypto/hash-afalg.c | 136 | ||||
| -rw-r--r-- | crypto/hash.c | 17 | ||||
| -rw-r--r-- | crypto/hashpriv.h | 8 |
5 files changed, 163 insertions, 0 deletions
diff --git a/crypto/Makefile.objs b/crypto/Makefile.objs index d2e8fa866b..2b99e08062 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 d0941d4ef6..f6550b5c51 100644 --- a/crypto/afalgpriv.h +++ b/crypto/afalgpriv.h @@ -24,6 +24,7 @@ #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 0000000000..70ab414cdf --- /dev/null +++ b/crypto/hash-afalg.c @@ -0,0 +1,136 @@ +/* + * QEMU Crypto af_alg-backend hash support + * + * Copyright (c) 2017 HUAWEI TECHNOLOGIES CO., LTD. + * + * Authors: + * Longpeng(Mike) <longpeng2@huawei.com> + * + * 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; + + 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_strdup_printf("%s", alg_name); + + 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; + } + + g_free(name); + + 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 expect_len = qcrypto_hash_digest_len(alg); + + if (*resultlen == 0) { + *resultlen = expect_len; + *result = g_new0(uint8_t, *resultlen); + } else if (*resultlen != expect_len) { + error_setg(errp, + "Result buffer size %zu is not match hash %d", + *resultlen, expect_len); + return -1; + } + + afalg = qcrypto_afalg_hash_ctx_new(alg, errp); + if (!afalg) { + 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; + ret = iov_send_recv(afalg->opfd, &outv, 1, + 0, iov_size(&outv, 1), false); + if (ret < 0) { + error_setg_errno(errp, errno, "Recv result from afalg-core failed"); + } else { + ret = 0; + } + +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 c43fd874fa..ac59c63d5f 100644 --- a/crypto/hash.c +++ b/crypto/hash.c @@ -46,6 +46,23 @@ 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; + } + + /* + * TODO: + * Maybe we should treat some afalg errors as fatal + */ + error_free(*errp); +#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 5e505e0492..cee26ccb47 100644 --- a/crypto/hashpriv.h +++ b/crypto/hashpriv.h @@ -28,4 +28,12 @@ struct QCryptoHashDriver { extern QCryptoHashDriver qcrypto_hash_lib_driver; +#ifdef CONFIG_AF_ALG + +#include "afalgpriv.h" + +extern QCryptoHashDriver qcrypto_hash_afalg_driver; + +#endif + #endif |