wsutil/md5.h

   1 /* $Id$ */
   2 /*
   3  * Copyright (C) 2003-2005 Benny Prijono <benny@prijono.org>
   4  * Copyright (C) 2012      C Elston, Katalix Systems Ltd <celston@katalix.com>
   5  *
   6  * MD5 code from pjlib-util http://www.pjsip.org
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  *
  22  *  2012-08-21 - C Elston - Split md5_hmac function to allow incremental usage.
  23  *
  24  */
  25 #ifndef __MD5_H__ /**@todo Should this be _CRYPT_MD5_H__ ?*/
  26 #define __MD5_H__
  27
  28 #include "ws_symbol_export.h"
  29
  30 /**
  31  * @file md5.h
  32  * @brief MD5 Functions
  33  */
  34
  35 /* Don't define this group for Wireshark
  36  * @defgroup PJLIB_UTIL_MD5 MD5 Functions
  37  * @ingroup PJLIB_UTIL
  38  * @{
  39  */
  40
  41 #define md5_byte_t guint8
  42
  43 /** MD5 context. */
  44 typedef struct md5_state_s
  45 {
  46         guint32 buf[4];
  47         guint32 bits[2];
  48         guint32 in[16];
  49 } md5_state_t;
  50
  51 /** Initialize the algorithm.
  52  *  @param pms          MD5 context.
  53  */
  54 WS_DLL_PUBLIC
  55 void md5_init(md5_state_t *pms);
  56
  57 /** Append a string to the message.
  58  *  @param pms          MD5 context.
  59  *  @param data         Data.
  60  *  @param nbytes       Length of data.
  61  */
  62 WS_DLL_PUBLIC
  63 void md5_append( md5_state_t *pms,
  64                              const guint8 *data, size_t nbytes);
  65
  66 /** Finish the message and return the digest.
  67  *  @param pms          MD5 context.
  68  *  @param digest       16 byte digest.
  69  */
  70 WS_DLL_PUBLIC
  71 void md5_finish(md5_state_t *pms, guint8 digest[16]);
  72
  73 typedef struct md5_hmac_state_s
  74 {
  75     md5_state_t ctx;
  76     guint8 k_opad[65];
  77 } md5_hmac_state_t;
  78
  79 WS_DLL_PUBLIC
  80 void md5_hmac_init(md5_hmac_state_t *hctx,
  81                    const guint8* key, size_t key_len);
  82
  83 WS_DLL_PUBLIC
  84 void md5_hmac_append(md5_hmac_state_t *hctx,
  85                      const guint8* text, size_t text_len);
  86
  87 WS_DLL_PUBLIC
  88 void md5_hmac_finish(md5_hmac_state_t *hctx, guint8 digest[16]);
  89
  90 WS_DLL_PUBLIC
  91 void md5_hmac(const guint8* text, size_t text_len, const guint8* key,
  92               size_t key_len, guint8 digest[16]);
  93
  94 /*
  95  * @}
  96  */
  97
  98 #endif  /* _CRYPT_MD5_H__ */