FreeRTOS/Common/ethernet/lwIP_130/src/netif/ppp/md5.h

   1 /*
   2  ***********************************************************************
   3  ** md5.h -- header file for implementation of MD5                    **
   4  ** RSA Data Security, Inc. MD5 Message-Digest Algorithm              **
   5  ** Created: 2/17/90 RLR                                              **
   6  ** Revised: 12/27/90 SRD,AJ,BSK,JT Reference C version               **
   7  ** Revised (for MD5): RLR 4/27/91                                    **
   8  **   -- G modified to have y&~z instead of y&z                       **
   9  **   -- FF, GG, HH modified to add in last register done             **
  10  **   -- Access pattern: round 2 works mod 5, round 3 works mod 3     **
  11  **   -- distinct additive constant for each step                     **
  12  **   -- round 4 added, working mod 7                                 **
  13  ***********************************************************************
  14  */
  15
  16 /*
  17  ***********************************************************************
  18  ** Copyright (C) 1990, RSA Data Security, Inc. All rights reserved.  **
  19  **                                                                   **
  20  ** License to copy and use this software is granted provided that    **
  21  ** it is identified as the "RSA Data Security, Inc. MD5 Message-     **
  22  ** Digest Algorithm" in all material mentioning or referencing this  **
  23  ** software or this function.                                        **
  24  **                                                                   **
  25  ** License is also granted to make and use derivative works          **
  26  ** provided that such works are identified as "derived from the RSA  **
  27  ** Data Security, Inc. MD5 Message-Digest Algorithm" in all          **
  28  ** material mentioning or referencing the derived work.              **
  29  **                                                                   **
  30  ** RSA Data Security, Inc. makes no representations concerning       **
  31  ** either the merchantability of this software or the suitability    **
  32  ** of this software for any particular purpose.  It is provided "as  **
  33  ** is" without express or implied warranty of any kind.              **
  34  **                                                                   **
  35  ** These notices must be retained in any copies of any part of this  **
  36  ** documentation and/or software.                                    **
  37  ***********************************************************************
  38  */
  39
  40 #ifndef MD5_H
  41 #define MD5_H
  42
  43 /* Data structure for MD5 (Message-Digest) computation */
  44 typedef struct {
  45   u32_t i[2];               /* number of _bits_ handled mod 2^64 */
  46   u32_t buf[4];             /* scratch buffer */
  47   unsigned char in[64];     /* input buffer */
  48   unsigned char digest[16]; /* actual digest after MD5Final call */
  49 } MD5_CTX;
  50
  51 void MD5Init  ( MD5_CTX *mdContext);
  52 void MD5Update( MD5_CTX *mdContext, unsigned char *inBuf, unsigned int inLen);
  53 void MD5Final ( unsigned char hash[], MD5_CTX *mdContext);
  54
  55 #endif /* MD5_H */