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