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Annotation of pgp/src/md5.h, revision 1.1

1.1     ! root        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: /* typedef a 32-bit type */
        !            41: typedef unsigned long int UINT4;
        !            42: 
        !            43: /* Data structure for MD5 (Message-Digest) computation */
        !            44: typedef struct {
        !            45:   UINT4 i[2];                   /* number of _bits_ handled mod 2^64 */
        !            46:   UINT4 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 *);
        !            52: void MD5Update(MD5_CTX *,unsigned char *,unsigned int);
        !            53: void MD5Final(MD5_CTX *);
        !            54: 

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