lib/md5.h

   1 /*
   2  * Copyright (C) 2004 6WIND
   3  *                          <Vincent.Jardin@6WIND.com>
   4  * All rights reserved.
   5  *
   6  * This MD5 code is Big endian and Little Endian compatible.
   7  */
   8
   9 /*
  10  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
  11  * All rights reserved.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  * 1. Redistributions of source code must retain the above copyright
  17  *    notice, this list of conditions and the following disclaimer.
  18  * 2. Redistributions in binary form must reproduce the above copyright
  19  *    notice, this list of conditions and the following disclaimer in the
  20  *    documentation and/or other materials provided with the distribution.
  21  * 3. Neither the name of the project nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  */
  37
  38 #ifndef _LIBZEBRA_MD5_H_
  39 #define _LIBZEBRA_MD5_H_
  40
  41 #ifdef __cplusplus
  42 extern "C" {
  43 #endif
  44
  45 #define MD5_BUFLEN      64
  46
  47 typedef struct {
  48         union {
  49                 uint32_t md5_state32[4];
  50                 uint8_t md5_state8[16];
  51         } md5_st;
  52
  53 #define md5_sta         md5_st.md5_state32[0]
  54 #define md5_stb         md5_st.md5_state32[1]
  55 #define md5_stc         md5_st.md5_state32[2]
  56 #define md5_std         md5_st.md5_state32[3]
  57 #define md5_st8         md5_st.md5_state8
  58
  59         union {
  60                 uint64_t md5_count64;
  61                 uint8_t md5_count8[8];
  62         } md5_count;
  63 #define md5_n   md5_count.md5_count64
  64 #define md5_n8  md5_count.md5_count8
  65
  66         uint md5_i;
  67         uint8_t md5_buf[MD5_BUFLEN];
  68 } md5_ctxt;
  69
  70 extern void md5_init(md5_ctxt *);
  71 extern void md5_loop(md5_ctxt *, const void *, unsigned int);
  72 extern void md5_pad(md5_ctxt *);
  73 extern void md5_result(uint8_t *, md5_ctxt *);
  74
  75 /* compatibility */
  76 #define MD5_CTX         md5_ctxt
  77 #define MD5Init(x)      md5_init((x))
  78 #define MD5Update(x, y, z)      md5_loop((x), (y), (z))
  79 #define MD5Final(x, y)                                                         \
  80         do {                                                                   \
  81                 md5_pad((y));                                                  \
  82                 md5_result((x), (y));                                          \
  83         } while (0)
  84
  85 /* From RFC 2104 */
  86 void hmac_md5(unsigned char *text, int text_len, unsigned char *key,
  87               int key_len, uint8_t *digest);
  88
  89 #ifdef __cplusplus
  90 }
  91 #endif
  92
  93 #endif /* ! _LIBZEBRA_MD5_H_*/