lib/md5.h

   1 // SPDX-License-Identifier: BSD-3-Clause
   2 /*
   3  * Copyright (C) 2004 6WIND
   4  *                          <Vincent.Jardin@6WIND.com>
   5  * All rights reserved.
   6  *
   7  * This MD5 code is Big endian and Little Endian compatible.
   8  */
   9
  10 /*
  11  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
  12  * All rights reserved.
  13  */
  14
  15 #ifndef _LIBZEBRA_MD5_H_
  16 #define _LIBZEBRA_MD5_H_
  17
  18 #ifdef __cplusplus
  19 extern "C" {
  20 #endif
  21
  22 #define MD5_BUFLEN      64
  23
  24 typedef struct {
  25         union {
  26                 uint32_t md5_state32[4];
  27                 uint8_t md5_state8[16];
  28         } md5_st;
  29
  30 #define md5_sta         md5_st.md5_state32[0]
  31 #define md5_stb         md5_st.md5_state32[1]
  32 #define md5_stc         md5_st.md5_state32[2]
  33 #define md5_std         md5_st.md5_state32[3]
  34 #define md5_st8         md5_st.md5_state8
  35
  36         union {
  37                 uint64_t md5_count64;
  38                 uint8_t md5_count8[8];
  39         } md5_count;
  40 #define md5_n   md5_count.md5_count64
  41 #define md5_n8  md5_count.md5_count8
  42
  43         uint md5_i;
  44         uint8_t md5_buf[MD5_BUFLEN];
  45 } md5_ctxt;
  46
  47 extern void md5_init(md5_ctxt *);
  48 extern void md5_loop(md5_ctxt *, const void *, unsigned int);
  49 extern void md5_pad(md5_ctxt *);
  50 extern void md5_result(uint8_t *, md5_ctxt *);
  51
  52 /* compatibility */
  53 #define MD5_CTX         md5_ctxt
  54 #define MD5Init(x)      md5_init((x))
  55 #define MD5Update(x, y, z)      md5_loop((x), (y), (z))
  56 #define MD5Final(x, y)                                                         \
  57         do {                                                                   \
  58                 md5_pad((y));                                                  \
  59                 md5_result((x), (y));                                          \
  60         } while (0)
  61
  62 /* From RFC 2104 */
  63 void hmac_md5(unsigned char *text, int text_len, unsigned char *key,
  64               int key_len, uint8_t *digest);
  65
  66 #ifdef __cplusplus
  67 }
  68 #endif
  69
  70 #endif /* ! _LIBZEBRA_MD5_H_*/