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/*
* libEtPan! -- a mail stuff library
*
* Copyright (C) 2001, 2005 - DINH Viet Hoa
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the libEtPan! project nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* hmac-md5.h -- HMAC_MD5 functions
*/
/*
* $Id$
*/
#ifndef HMAC_MD5_H
#define HMAC_MD5_H 1
#ifdef __cplusplus
extern "C" {
#endif
#define HMAC_MD5_SIZE 16
/* intermediate MD5 context */
typedef struct HMAC_MD5_CTX_s {
MD5_CTX ictx, octx;
} HMAC_MD5_CTX;
/* intermediate HMAC state
* values stored in network byte order (Big Endian)
*/
typedef struct HMAC_MD5_STATE_s {
UINT4 istate[4];
UINT4 ostate[4];
} HMAC_MD5_STATE;
/* One step hmac computation
*
* digest may be same as text or key
*/
void hmac_md5(const unsigned char *text, int text_len,
const unsigned char *key, int key_len,
unsigned char digest[HMAC_MD5_SIZE]);
/* create context from key
*/
void hmac_md5_init(HMAC_MD5_CTX *hmac,
const unsigned char *key, int key_len);
/* precalculate intermediate state from key
*/
void hmac_md5_precalc(HMAC_MD5_STATE *hmac,
const unsigned char *key, int key_len);
/* initialize context from intermediate state
*/
void hmac_md5_import(HMAC_MD5_CTX *hmac, HMAC_MD5_STATE *state);
#define hmac_md5_update(hmac, text, text_len) MD5Update(&(hmac)->ictx, (text), (text_len))
/* finish hmac from intermediate result. Intermediate result is zeroed.
*/
void hmac_md5_final(unsigned char digest[HMAC_MD5_SIZE],
HMAC_MD5_CTX *hmac);
#ifdef __cplusplus
}
#endif
#endif /* HMAC_MD5_H */
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