| Alexandre Lision | 8af73cb | 2013-12-10 14:11:20 -0500 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| 5 | * |
| 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. |
| 10 | * |
| 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. |
| 15 | * |
| 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 |
| 19 | */ |
| 20 | #ifndef __PJLIB_UTIL_HMAC_SHA1_H__ |
| 21 | #define __PJLIB_UTIL_HMAC_SHA1_H__ |
| 22 | |
| 23 | /** |
| 24 | * @file hmac_sha1.h |
| 25 | * @brief HMAC SHA1 Message Authentication |
| 26 | */ |
| 27 | |
| 28 | #include <pj/types.h> |
| 29 | #include <pjlib-util/sha1.h> |
| 30 | |
| 31 | PJ_BEGIN_DECL |
| 32 | |
| 33 | /** |
| 34 | * @defgroup PJLIB_UTIL_HMAC_SHA1 HMAC SHA1 Message Authentication |
| 35 | * @ingroup PJLIB_UTIL_ENCRYPTION |
| 36 | * @{ |
| 37 | * |
| 38 | * This module contains the implementation of HMAC: Keyed-Hashing |
| 39 | * for Message Authentication, as described in RFC 2104. |
| 40 | */ |
| 41 | |
| 42 | /** |
| 43 | * The HMAC-SHA1 context used in the incremental HMAC calculation. |
| 44 | */ |
| 45 | typedef struct pj_hmac_sha1_context |
| 46 | { |
| 47 | pj_sha1_context context; /**< SHA1 context */ |
| 48 | pj_uint8_t k_opad[64]; /**< opad xor-ed with key */ |
| 49 | } pj_hmac_sha1_context; |
| 50 | |
| 51 | |
| 52 | /** |
| 53 | * Calculate HMAC-SHA1 digest for the specified input and key with this |
| 54 | * single function call. |
| 55 | * |
| 56 | * @param input Pointer to the input stream. |
| 57 | * @param input_len Length of input stream in bytes. |
| 58 | * @param key Pointer to the authentication key. |
| 59 | * @param key_len Length of the authentication key. |
| 60 | * @param digest Buffer to be filled with HMAC SHA1 digest. |
| 61 | */ |
| 62 | PJ_DECL(void) pj_hmac_sha1(const pj_uint8_t *input, unsigned input_len, |
| 63 | const pj_uint8_t *key, unsigned key_len, |
| 64 | pj_uint8_t digest[20]); |
| 65 | |
| 66 | |
| 67 | /** |
| 68 | * Initiate HMAC-SHA1 context for incremental hashing. |
| 69 | * |
| 70 | * @param hctx HMAC-SHA1 context. |
| 71 | * @param key Pointer to the authentication key. |
| 72 | * @param key_len Length of the authentication key. |
| 73 | */ |
| 74 | PJ_DECL(void) pj_hmac_sha1_init(pj_hmac_sha1_context *hctx, |
| 75 | const pj_uint8_t *key, unsigned key_len); |
| 76 | |
| 77 | /** |
| 78 | * Append string to the message. |
| 79 | * |
| 80 | * @param hctx HMAC-SHA1 context. |
| 81 | * @param input Pointer to the input stream. |
| 82 | * @param input_len Length of input stream in bytes. |
| 83 | */ |
| 84 | PJ_DECL(void) pj_hmac_sha1_update(pj_hmac_sha1_context *hctx, |
| 85 | const pj_uint8_t *input, |
| 86 | unsigned input_len); |
| 87 | |
| 88 | /** |
| 89 | * Finish the message and return the digest. |
| 90 | * |
| 91 | * @param hctx HMAC-SHA1 context. |
| 92 | * @param digest Buffer to be filled with HMAC SHA1 digest. |
| 93 | */ |
| 94 | PJ_DECL(void) pj_hmac_sha1_final(pj_hmac_sha1_context *hctx, |
| 95 | pj_uint8_t digest[20]); |
| 96 | |
| 97 | |
| 98 | /** |
| 99 | * @} |
| 100 | */ |
| 101 | |
| 102 | PJ_END_DECL |
| 103 | |
| 104 | |
| 105 | #endif /* __PJLIB_UTIL_HMAC_SHA1_H__ */ |
| 106 | |
| 107 | |