3 * HMAC message authentication code (RFC-2104).
6 /* nettle, low-level cryptographics library
8 * Copyright (C) 2001, 2002 Niels Möller
10 * The nettle library is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU Lesser General Public License as published by
12 * the Free Software Foundation; either version 2.1 of the License, or (at your
13 * option) any later version.
15 * The nettle library is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
17 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
18 * License for more details.
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with the nettle library; see the file COPYING.LIB. If not, write to
22 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
26 #ifndef NETTLE_HMAC_H_INCLUDED
27 #define NETTLE_HMAC_H_INCLUDED
29 #include "nettle-meta.h"
38 /* Namespace mangling */
39 #define hmac_set_key nettle_hmac_set_key
40 #define hmac_update nettle_hmac_update
41 #define hmac_digest nettle_hmac_digest
42 #define hmac_md5_set_key nettle_hmac_md5_set_key
43 #define hmac_md5_update nettle_hmac_md5_update
44 #define hmac_md5_digest nettle_hmac_md5_digest
45 #define hmac_sha1_set_key nettle_hmac_sha1_set_key
46 #define hmac_sha1_update nettle_hmac_sha1_update
47 #define hmac_sha1_digest nettle_hmac_sha1_digest
48 #define hmac_sha224_set_key nettle_hmac_sha224_set_key
49 #define hmac_sha224_digest nettle_hmac_sha224_digest
50 #define hmac_sha256_set_key nettle_hmac_sha256_set_key
51 #define hmac_sha256_update nettle_hmac_sha256_update
52 #define hmac_sha256_digest nettle_hmac_sha256_digest
53 #define hmac_sha384_set_key nettle_hmac_sha384_set_key
54 #define hmac_sha384_digest nettle_hmac_sha384_digest
55 #define hmac_sha512_set_key nettle_hmac_sha512_set_key
56 #define hmac_sha512_update nettle_hmac_sha512_update
57 #define hmac_sha512_digest nettle_hmac_sha512_digest
60 hmac_set_key(void *outer, void *inner, void *state,
61 const struct nettle_hash *hash,
62 unsigned length, const uint8_t *key);
64 /* This function is not strictly needed, it's s just the same as the
65 * hash update function. */
67 hmac_update(void *state,
68 const struct nettle_hash *hash,
69 unsigned length, const uint8_t *data);
72 hmac_digest(const void *outer, const void *inner, void *state,
73 const struct nettle_hash *hash,
74 unsigned length, uint8_t *digest);
77 #define HMAC_CTX(type) \
78 { type outer; type inner; type state; }
80 #define HMAC_SET_KEY(ctx, hash, length, key) \
81 hmac_set_key( &(ctx)->outer, &(ctx)->inner, &(ctx)->state, \
82 (hash), (length), (key) )
84 #define HMAC_DIGEST(ctx, hash, length, digest) \
85 hmac_digest( &(ctx)->outer, &(ctx)->inner, &(ctx)->state, \
86 (hash), (length), (digest) )
88 /* HMAC using specific hash functions */
91 struct hmac_md5_ctx HMAC_CTX(struct md5_ctx);
94 hmac_md5_set_key(struct hmac_md5_ctx *ctx,
95 unsigned key_length, const uint8_t *key);
98 hmac_md5_update(struct hmac_md5_ctx *ctx,
99 unsigned length, const uint8_t *data);
102 hmac_md5_digest(struct hmac_md5_ctx *ctx,
103 unsigned length, uint8_t *digest);
107 struct hmac_sha1_ctx HMAC_CTX(struct sha1_ctx);
110 hmac_sha1_set_key(struct hmac_sha1_ctx *ctx,
111 unsigned key_length, const uint8_t *key);
114 hmac_sha1_update(struct hmac_sha1_ctx *ctx,
115 unsigned length, const uint8_t *data);
118 hmac_sha1_digest(struct hmac_sha1_ctx *ctx,
119 unsigned length, uint8_t *digest);
122 struct hmac_sha256_ctx HMAC_CTX(struct sha256_ctx);
125 hmac_sha256_set_key(struct hmac_sha256_ctx *ctx,
126 unsigned key_length, const uint8_t *key);
129 hmac_sha256_update(struct hmac_sha256_ctx *ctx,
130 unsigned length, const uint8_t *data);
133 hmac_sha256_digest(struct hmac_sha256_ctx *ctx,
134 unsigned length, uint8_t *digest);
137 #define hmac_sha224_ctx hmac_sha256_ctx
140 hmac_sha224_set_key(struct hmac_sha224_ctx *ctx,
141 unsigned key_length, const uint8_t *key);
143 #define hmac_sha224_update nettle_hmac_sha256_update
146 hmac_sha224_digest(struct hmac_sha224_ctx *ctx,
147 unsigned length, uint8_t *digest);
150 struct hmac_sha512_ctx HMAC_CTX(struct sha512_ctx);
153 hmac_sha512_set_key(struct hmac_sha512_ctx *ctx,
154 unsigned key_length, const uint8_t *key);
157 hmac_sha512_update(struct hmac_sha512_ctx *ctx,
158 unsigned length, const uint8_t *data);
161 hmac_sha512_digest(struct hmac_sha512_ctx *ctx,
162 unsigned length, uint8_t *digest);
165 #define hmac_sha384_ctx hmac_sha512_ctx
168 hmac_sha384_set_key(struct hmac_sha512_ctx *ctx,
169 unsigned key_length, const uint8_t *key);
171 #define hmac_sha384_update nettle_hmac_sha512_update
174 hmac_sha384_digest(struct hmac_sha512_ctx *ctx,
175 unsigned length, uint8_t *digest);
181 #endif /* NETTLE_HMAC_H_INCLUDED */