2 * QEMU Crypto hmac algorithms (based on nettle)
4 * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
7 * Longpeng(Mike) <longpeng2@huawei.com>
9 * This work is licensed under the terms of the GNU GPL, version 2 or
10 * (at your option) any later version. See the COPYING file in the
11 * top-level directory.
15 #include "qemu/osdep.h"
16 #include "qapi/error.h"
17 #include "crypto/hmac.h"
18 #include <nettle/hmac.h>
20 typedef void (*qcrypto_nettle_hmac_setkey
)(void *ctx
,
21 size_t key_length
, const uint8_t *key
);
23 typedef void (*qcrypto_nettle_hmac_update
)(void *ctx
,
24 size_t length
, const uint8_t *data
);
26 typedef void (*qcrypto_nettle_hmac_digest
)(void *ctx
,
27 size_t length
, uint8_t *digest
);
29 typedef struct QCryptoHmacNettle QCryptoHmacNettle
;
30 struct QCryptoHmacNettle
{
31 union qcrypto_nettle_hmac_ctx
{
32 struct hmac_md5_ctx md5_ctx
;
33 struct hmac_sha1_ctx sha1_ctx
;
34 struct hmac_sha256_ctx sha256_ctx
; /* equals hmac_sha224_ctx */
35 struct hmac_sha512_ctx sha512_ctx
; /* equals hmac_sha384_ctx */
36 struct hmac_ripemd160_ctx ripemd160_ctx
;
40 struct qcrypto_nettle_hmac_alg
{
41 qcrypto_nettle_hmac_setkey setkey
;
42 qcrypto_nettle_hmac_update update
;
43 qcrypto_nettle_hmac_digest digest
;
45 } qcrypto_hmac_alg_map
[QCRYPTO_HASH_ALG__MAX
] = {
46 [QCRYPTO_HASH_ALG_MD5
] = {
47 .setkey
= (qcrypto_nettle_hmac_setkey
)hmac_md5_set_key
,
48 .update
= (qcrypto_nettle_hmac_update
)hmac_md5_update
,
49 .digest
= (qcrypto_nettle_hmac_digest
)hmac_md5_digest
,
50 .len
= MD5_DIGEST_SIZE
,
52 [QCRYPTO_HASH_ALG_SHA1
] = {
53 .setkey
= (qcrypto_nettle_hmac_setkey
)hmac_sha1_set_key
,
54 .update
= (qcrypto_nettle_hmac_update
)hmac_sha1_update
,
55 .digest
= (qcrypto_nettle_hmac_digest
)hmac_sha1_digest
,
56 .len
= SHA1_DIGEST_SIZE
,
58 [QCRYPTO_HASH_ALG_SHA224
] = {
59 .setkey
= (qcrypto_nettle_hmac_setkey
)hmac_sha224_set_key
,
60 .update
= (qcrypto_nettle_hmac_update
)hmac_sha224_update
,
61 .digest
= (qcrypto_nettle_hmac_digest
)hmac_sha224_digest
,
62 .len
= SHA224_DIGEST_SIZE
,
64 [QCRYPTO_HASH_ALG_SHA256
] = {
65 .setkey
= (qcrypto_nettle_hmac_setkey
)hmac_sha256_set_key
,
66 .update
= (qcrypto_nettle_hmac_update
)hmac_sha256_update
,
67 .digest
= (qcrypto_nettle_hmac_digest
)hmac_sha256_digest
,
68 .len
= SHA256_DIGEST_SIZE
,
70 [QCRYPTO_HASH_ALG_SHA384
] = {
71 .setkey
= (qcrypto_nettle_hmac_setkey
)hmac_sha384_set_key
,
72 .update
= (qcrypto_nettle_hmac_update
)hmac_sha384_update
,
73 .digest
= (qcrypto_nettle_hmac_digest
)hmac_sha384_digest
,
74 .len
= SHA384_DIGEST_SIZE
,
76 [QCRYPTO_HASH_ALG_SHA512
] = {
77 .setkey
= (qcrypto_nettle_hmac_setkey
)hmac_sha512_set_key
,
78 .update
= (qcrypto_nettle_hmac_update
)hmac_sha512_update
,
79 .digest
= (qcrypto_nettle_hmac_digest
)hmac_sha512_digest
,
80 .len
= SHA512_DIGEST_SIZE
,
82 [QCRYPTO_HASH_ALG_RIPEMD160
] = {
83 .setkey
= (qcrypto_nettle_hmac_setkey
)hmac_ripemd160_set_key
,
84 .update
= (qcrypto_nettle_hmac_update
)hmac_ripemd160_update
,
85 .digest
= (qcrypto_nettle_hmac_digest
)hmac_ripemd160_digest
,
86 .len
= RIPEMD160_DIGEST_SIZE
,
90 bool qcrypto_hmac_supports(QCryptoHashAlgorithm alg
)
92 if (alg
< G_N_ELEMENTS(qcrypto_hmac_alg_map
) &&
93 qcrypto_hmac_alg_map
[alg
].setkey
!= NULL
) {
100 QCryptoHmac
*qcrypto_hmac_new(QCryptoHashAlgorithm alg
,
101 const uint8_t *key
, size_t nkey
,
105 QCryptoHmacNettle
*ctx
;
107 if (!qcrypto_hmac_supports(alg
)) {
108 error_setg(errp
, "Unsupported hmac algorithm %s",
109 QCryptoHashAlgorithm_lookup
[alg
]);
113 hmac
= g_new0(QCryptoHmac
, 1);
116 ctx
= g_new0(QCryptoHmacNettle
, 1);
118 qcrypto_hmac_alg_map
[alg
].setkey(&ctx
->u
, nkey
, key
);
125 void qcrypto_hmac_free(QCryptoHmac
*hmac
)
127 QCryptoHmacNettle
*ctx
;
139 int qcrypto_hmac_bytesv(QCryptoHmac
*hmac
,
140 const struct iovec
*iov
,
146 QCryptoHmacNettle
*ctx
;
149 ctx
= (QCryptoHmacNettle
*)hmac
->opaque
;
151 for (i
= 0; i
< niov
; ++i
) {
152 size_t len
= iov
[i
].iov_len
;
153 uint8_t *base
= iov
[i
].iov_base
;
155 size_t shortlen
= MIN(len
, UINT_MAX
);
156 qcrypto_hmac_alg_map
[hmac
->alg
].update(&ctx
->u
, len
, base
);
162 if (*resultlen
== 0) {
163 *resultlen
= qcrypto_hmac_alg_map
[hmac
->alg
].len
;
164 *result
= g_new0(uint8_t, *resultlen
);
165 } else if (*resultlen
!= qcrypto_hmac_alg_map
[hmac
->alg
].len
) {
167 "Result buffer size %zu is smaller than hash %zu",
168 *resultlen
, qcrypto_hmac_alg_map
[hmac
->alg
].len
);
172 qcrypto_hmac_alg_map
[hmac
->alg
].digest(&ctx
->u
, *resultlen
, *result
);