md5.h

00001 /*
00002  ***********************************************************************
00003  ** md5.h -- header file for implementation of MD5                    **
00004  ** RSA Data Security, Inc. MD5 Message-Digest Algorithm              **
00005  ** Created: 2/17/90 RLR                                              **
00006  ** Revised: 12/27/90 SRD,AJ,BSK,JT Reference C version               **
00007  ** Revised (for MD5): RLR 4/27/91                                    **
00008  **   -- G modified to have y&~z instead of y&z                       **
00009  **   -- FF, GG, HH modified to add in last register done             **
00010  **   -- Access pattern: round 2 works mod 5, round 3 works mod 3     **
00011  **   -- distinct additive constant for each step                     **
00012  **   -- round 4 added, working mod 7                                 **
00013  ***********************************************************************
00014  */
00015 
00016 /*
00017  ***********************************************************************
00018  ** Copyright (C) 1990, RSA Data Security, Inc. All rights reserved.  **
00019  **                                                                   **
00020  ** License to copy and use this software is granted provided that    **
00021  ** it is identified as the "RSA Data Security, Inc. MD5 Message-     **
00022  ** Digest Algorithm" in all material mentioning or referencing this  **
00023  ** software or this function.                                        **
00024  **                                                                   **
00025  ** License is also granted to make and use derivative works          **
00026  ** provided that such works are identified as "derived from the RSA  **
00027  ** Data Security, Inc. MD5 Message-Digest Algorithm" in all          **
00028  ** material mentioning or referencing the derived work.              **
00029  **                                                                   **
00030  ** RSA Data Security, Inc. makes no representations concerning       **
00031  ** either the merchantability of this software or the suitability    **
00032  ** of this software for any particular purpose.  It is provided "as  **
00033  ** is" without express or implied warranty of any kind.              **
00034  **                                                                   **
00035  ** These notices must be retained in any copies of any part of this  **
00036  ** documentation and/or software.                                    **
00037  ***********************************************************************
00038  */
00039 
00040 #ifndef MD5_H
00041 #define MD5_H
00042 
00043 /* Data structure for MD5 (Message-Digest) computation */
00044 typedef struct {
00045   u32_t i[2];               /* number of _bits_ handled mod 2^64 */
00046   u32_t buf[4];             /* scratch buffer */
00047   unsigned char in[64];     /* input buffer */
00048   unsigned char digest[16]; /* actual digest after MD5Final call */
00049 } MD5_CTX;
00050 
00051 void MD5Init  ( MD5_CTX *mdContext);
00052 void MD5Update( MD5_CTX *mdContext, unsigned char *inBuf, unsigned int inLen);
00053 void MD5Final ( unsigned char hash[], MD5_CTX *mdContext);
00054 
00055 #endif /* MD5_H */