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 */
56