1 /*
2 Copyright (C) 2005, 2004, 2010, Erik Eliasson, Johan Bilien, Werner Dittmann
3
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 This library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with this library; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17
18 * In addition, as a special exception, the copyright holders give
19 * permission to link the code of portions of this program with the
20 * OpenSSL library under certain conditions as described in each
21 * individual source file, and distribute linked combinations
22 * including the two.
23 * You must obey the GNU General Public License in all respects
24 * for all of the code used other than OpenSSL. If you modify
25 * file(s) with this exception, you may extend this exception to your
26 * version of the file(s), but you are not obligated to do so. If you
27 * do not wish to do so, delete this exception statement from your
28 * version. If you delete this exception statement from all source
29 * files in the program, then also delete it here.
30 */
31
32 /*
33 * Authors: Erik Eliasson <eliasson@it.kth.se>
34 * Johan Bilien <jobi@via.ecp.fr>
35 * Werner Dittmann
36 */
37
38 #include <stdint.h>
39 #include <openssl/hmac.h>
41
43 const uint8_t* data, uint32_t data_length,
44 uint8_t* mac, int32_t* mac_length )
45 {
46 HMAC(EVP_sha1(), key, key_length,
47 data, data_length, mac,
48 reinterpret_cast<uint32_t*>(mac_length) );
49 }
50
52 const uint8_t* data_chunks[],
53 uint32_t data_chunck_length[],
54 uint8_t* mac, int32_t* mac_length ) {
55 HMAC_CTX ctx;
56 HMAC_CTX_init(&ctx);
57 HMAC_Init_ex(&ctx, key, key_length, EVP_sha1(), NULL);
58 while (*data_chunks) {
59 HMAC_Update(&ctx, *data_chunks, *data_chunck_length);
60 data_chunks ++;
61 data_chunck_length ++;
62 }
63 HMAC_Final(&ctx, mac, reinterpret_cast<uint32_t*>(mac_length));
64 HMAC_CTX_cleanup(&ctx);
65 }
66
68 {
69 HMAC_CTX* ctx = (HMAC_CTX*)malloc(sizeof(HMAC_CTX));
70
71 HMAC_CTX_init(ctx);
72 HMAC_Init_ex(ctx, key, key_length, EVP_sha1(), NULL);
73 return ctx;
74 }
75
76 void hmacSha1Ctx(
void* ctx,
const uint8_t* data, uint32_t data_length,
77 uint8_t* mac, int32_t* mac_length)
78 {
79 HMAC_CTX* pctx = (HMAC_CTX*)ctx;
80
81 HMAC_Init_ex(pctx, NULL, 0, NULL, NULL );
82 HMAC_Update(pctx, data, data_length );
83 HMAC_Final(pctx, mac, reinterpret_cast<uint32_t*>(mac_length) );
84 }
85
86 void hmacSha1Ctx(
void* ctx,
const uint8_t* data[], uint32_t data_length[],
87 uint8_t* mac, int32_t* mac_length )
88 {
89 HMAC_CTX* pctx = (HMAC_CTX*)ctx;
90
91 HMAC_Init_ex(pctx, NULL, 0, NULL, NULL );
92 while (*data) {
93 HMAC_Update(pctx, *data, *data_length);
94 data++;
95 data_length++;
96 }
97 HMAC_Final(pctx, mac, reinterpret_cast<uint32_t*>(mac_length) );
98 }
99
101 {
102 if (ctx) {
103 HMAC_CTX_cleanup((HMAC_CTX*)ctx);
104 free(ctx);
105 }
106 }
Functions to compute SHA1 HAMAC.
void freeSha1HmacContext(void *ctx)
Free SHA1 HMAC context.
void * createSha1HmacContext(uint8_t *key, int32_t key_length)
Create and initialize a SHA1 HMAC context.
void hmacSha1Ctx(void *ctx, const uint8_t *data, uint32_t data_length, uint8_t *mac, int32_t *mac_length)
Compute SHA1 HMAC.
void hmac_sha1(uint8_t *key, int32_t key_length, const uint8_t *data, uint32_t data_length, uint8_t *mac, int32_t *mac_length)
Compute SHA1 HMAC.