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Diffstat (limited to 'pjlib-util/include/pjlib-util/hmac_sha1.h')
| -rw-r--r-- | pjlib-util/include/pjlib-util/hmac_sha1.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/pjlib-util/include/pjlib-util/hmac_sha1.h b/pjlib-util/include/pjlib-util/hmac_sha1.h new file mode 100644 index 0000000..539e465 --- /dev/null +++ b/pjlib-util/include/pjlib-util/hmac_sha1.h @@ -0,0 +1,107 @@ +/* $Id: hmac_sha1.h 3553 2011-05-05 06:14:19Z nanang $ */ +/* + * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) + * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#ifndef __PJLIB_UTIL_HMAC_SHA1_H__ +#define __PJLIB_UTIL_HMAC_SHA1_H__ + +/** + * @file hmac_sha1.h + * @brief HMAC SHA1 Message Authentication + */ + +#include <pj/types.h> +#include <pjlib-util/sha1.h> + +PJ_BEGIN_DECL + +/** + * @defgroup PJLIB_UTIL_HMAC_SHA1 HMAC SHA1 Message Authentication + * @ingroup PJLIB_UTIL_ENCRYPTION + * @{ + * + * This module contains the implementation of HMAC: Keyed-Hashing + * for Message Authentication, as described in RFC 2104. + */ + +/** + * The HMAC-SHA1 context used in the incremental HMAC calculation. + */ +typedef struct pj_hmac_sha1_context +{ + pj_sha1_context context; /**< SHA1 context */ + pj_uint8_t k_opad[64]; /**< opad xor-ed with key */ +} pj_hmac_sha1_context; + + +/** + * Calculate HMAC-SHA1 digest for the specified input and key with this + * single function call. + * + * @param input Pointer to the input stream. + * @param input_len Length of input stream in bytes. + * @param key Pointer to the authentication key. + * @param key_len Length of the authentication key. + * @param digest Buffer to be filled with HMAC SHA1 digest. + */ +PJ_DECL(void) pj_hmac_sha1(const pj_uint8_t *input, unsigned input_len, + const pj_uint8_t *key, unsigned key_len, + pj_uint8_t digest[20]); + + +/** + * Initiate HMAC-SHA1 context for incremental hashing. + * + * @param hctx HMAC-SHA1 context. + * @param key Pointer to the authentication key. + * @param key_len Length of the authentication key. + */ +PJ_DECL(void) pj_hmac_sha1_init(pj_hmac_sha1_context *hctx, + const pj_uint8_t *key, unsigned key_len); + +/** + * Append string to the message. + * + * @param hctx HMAC-SHA1 context. + * @param input Pointer to the input stream. + * @param input_len Length of input stream in bytes. + */ +PJ_DECL(void) pj_hmac_sha1_update(pj_hmac_sha1_context *hctx, + const pj_uint8_t *input, + unsigned input_len); + +/** + * Finish the message and return the digest. + * + * @param hctx HMAC-SHA1 context. + * @param digest Buffer to be filled with HMAC SHA1 digest. + */ +PJ_DECL(void) pj_hmac_sha1_final(pj_hmac_sha1_context *hctx, + pj_uint8_t digest[20]); + + +/** + * @} + */ + +PJ_END_DECL + + +#endif /* __PJLIB_UTIL_HMAC_SHA1_H__ */ + + |