1
/* $Id: hmac_md5.h 3553 2011-05-05 06:14:19Z nanang $ */
3
* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
4
* Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
6
* This program is free software; you can redistribute it and/or modify
7
* it under the terms of the GNU General Public License as published by
8
* the Free Software Foundation; either version 2 of the License, or
9
* (at your option) any later version.
11
* This program is distributed in the hope that it will be useful,
12
* but WITHOUT ANY WARRANTY; without even the implied warranty of
13
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14
* GNU General Public License for more details.
16
* You should have received a copy of the GNU General Public License
17
* along with this program; if not, write to the Free Software
18
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20
#ifndef __PJLIB_UTIL_HMAC_MD5_H__
21
#define __PJLIB_UTIL_HMAC_MD5_H__
25
* @brief HMAC MD5 Message Authentication
29
* @defgroup PJLIB_UTIL_ENCRYPTION Encryption Algorithms
33
#include <pjlib-util/md5.h>
38
* @defgroup PJLIB_UTIL_HMAC_MD5 HMAC MD5 Message Authentication
39
* @ingroup PJLIB_UTIL_ENCRYPTION
42
* This module contains the implementation of HMAC: Keyed-Hashing
43
* for Message Authentication, as described in RFC 2104
47
* The HMAC-MD5 context used in the incremental HMAC calculation.
49
typedef struct pj_hmac_md5_context
51
pj_md5_context context; /**< MD5 context */
52
pj_uint8_t k_opad[64]; /**< opad xor-ed with key */
53
} pj_hmac_md5_context;
57
* Calculate HMAC MD5 digest for the specified input and key.
59
* @param input Pointer to the input stream.
60
* @param input_len Length of input stream in bytes.
61
* @param key Pointer to the authentication key.
62
* @param key_len Length of the authentication key.
63
* @param digest Buffer to be filled with HMAC MD5 digest.
65
PJ_DECL(void) pj_hmac_md5(const pj_uint8_t *input, unsigned input_len,
66
const pj_uint8_t *key, unsigned key_len,
67
pj_uint8_t digest[16]);
71
* Initiate HMAC-MD5 context for incremental hashing.
73
* @param hctx HMAC-MD5 context.
74
* @param key Pointer to the authentication key.
75
* @param key_len Length of the authentication key.
77
PJ_DECL(void) pj_hmac_md5_init(pj_hmac_md5_context *hctx,
78
const pj_uint8_t *key, unsigned key_len);
81
* Append string to the message.
83
* @param hctx HMAC-MD5 context.
84
* @param input Pointer to the input stream.
85
* @param input_len Length of input stream in bytes.
87
PJ_DECL(void) pj_hmac_md5_update(pj_hmac_md5_context *hctx,
88
const pj_uint8_t *input,
92
* Finish the message and return the digest.
94
* @param hctx HMAC-MD5 context.
95
* @param digest Buffer to be filled with HMAC MD5 digest.
97
PJ_DECL(void) pj_hmac_md5_final(pj_hmac_md5_context *hctx,
98
pj_uint8_t digest[16]);
107
#endif /* __PJLIB_UTIL_HMAC_MD5_H__ */