1#ifndef MD5_H
2#define MD5_H
3
4/*
5 ***********************************************************************
6 ** md5.h -- header file for implementation of MD5                    **
7 ** RSA Data Security, Inc. MD5 Message-Digest Algorithm              **
8 ** Created: 2/17/90 RLR                                              **
9 ** Revised: 12/27/90 SRD,AJ,BSK,JT Reference C version               **
10 ** Revised (for MD5): RLR 4/27/91                                    **
11 **   -- G modified to have y&~z instead of y&z                       **
12 **   -- FF, GG, HH modified to add in last register done             **
13 **   -- Access pattern: round 2 works mod 5, round 3 works mod 3     **
14 **   -- distinct additive constant for each step                     **
15 **   -- round 4 added, working mod 7                                 **
16 ***********************************************************************
17 */
18
19/*
20 * Edited 7 May 93 by CP to change the interface to match that
21 * of the MD5 routines in RSAREF.  Due to this alteration, this
22 * code is "derived from the RSA Data Security, Inc. MD5 Message-
23 * Digest Algorithm".  (See below.)  Also added argument names
24 * to the prototypes.
25 */
26
27/*
28 ***********************************************************************
29 ** Copyright (C) 1990, RSA Data Security, Inc. All rights reserved.  **
30 **                                                                   **
31 ** License to copy and use this software is granted provided that    **
32 ** it is identified as the "RSA Data Security, Inc. MD5 Message-     **
33 ** Digest Algorithm" in all material mentioning or referencing this  **
34 ** software or this function.                                        **
35 **                                                                   **
36 ** License is also granted to make and use derivative works          **
37 ** provided that such works are identified as "derived from the RSA  **
38 ** Data Security, Inc. MD5 Message-Digest Algorithm" in all          **
39 ** material mentioning or referencing the derived work.              **
40 **                                                                   **
41 ** RSA Data Security, Inc. makes no representations concerning       **
42 ** either the merchantability of this software or the suitability    **
43 ** of this software for any particular purpose.  It is provided "as  **
44 ** is" without express or implied warranty of any kind.              **
45 **                                                                   **
46 ** These notices must be retained in any copies of any part of this  **
47 ** documentation and/or software.                                    **
48 ***********************************************************************
49 */
50
51/* typedef a 32-bit type */
52typedef unsigned int UINT4;
53
54/* Data structure for MD5 (Message-Digest) computation */
55typedef struct {
56  UINT4 buf[4];                                    /* scratch buffer */
57  UINT4 i[2];                   /* number of _bits_ handled mod 2^64 */
58  unsigned char in[64];                              /* input buffer */
59} MD5_CTX;
60
61void MD5Init   (MD5_CTX *mdContext);
62void MD5Update (MD5_CTX *mdContext, unsigned char *buf, unsigned int len);
63void MD5Final  (unsigned char digest[16], MD5_CTX *mdContext);
64void Transform (UINT4 *buf, UINT4 *in);
65
66#endif
67