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                          md4.h  -  description
    begin                : Tue Sep 3 2002
    copyright            : (C) 2002 by Tim-Philipp Müller
    email                : t.i.m@orange.net

 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *

#ifndef _ed2k_hash_md4_h_included_
#define _ed2k_hash_md4_h_included_

/* we could use the openssl md4 hashing routines instead of our own.
   Anyone care to add the configure skript check for openssl and the MD4 routines?
# include <openssl/md4.h>

/* MD4.H - header file for MD4C.C

/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
   rights reserved.

   License to copy and use this software is granted provided that it
   is identified as the "RSA Data Security, Inc. MD4 Message-Digest
   Algorithm" in all material mentioning or referencing this software
   or this function.

   License is also granted to make and use derivative works provided
   that such works are identified as "derived from the RSA Data
   Security, Inc. MD4 Message-Digest Algorithm" in all material
   mentioning or referencing the derived work.

   RSA Data Security, Inc. makes no representations concerning either
   the merchantability of this software or the suitability of this
   software for any particular purpose. It is provided "as is"
   without express or implied warranty of any kind.

   These notices must be retained in any copies of any part of this
   documentation and/or software.

/* PROTOTYPES should be set to one if and only if the compiler supports
     function argument prototyping.
   The following makes PROTOTYPES default to 0 if it has not already
     been defined with C compiler flags.
#define PROTOTYPES 0

/* POINTER defines a generic pointer type */
typedef unsigned char *POINTER;

/* UINT2 defines a two byte word */
typedef unsigned short int UINT2;

/* UINT4 defines a four byte word */
/* unsigned long int on 64bit is 8 bits */
typedef unsigned int UINT4;

/* PROTO_LIST is defined depending on how PROTOTYPES is defined above.
   If using PROTOTYPES, then PROTO_LIST returns the list, otherwise it
     returns an empty list.

#define PROTO_LIST(list) list
#define PROTO_LIST(list) ()

/* MD4 context. */

#define MD4_Init  MD4Init
#define MD4_Update      MD4Update
#define MD4_Final MD4Final

typedef struct
  UINT4 state[4];                                   /* state (ABCD) */
  UINT4 count[2];        /* number of bits, modulo 2^64 (lsb first) */
  unsigned char buffer[64];                         /* input buffer */
} MD4_CTX;

void MD4Init PROTO_LIST ((MD4_CTX *));
void MD4Update PROTO_LIST
  ((MD4_CTX *, unsigned char *, unsigned int));
void MD4Final PROTO_LIST ((unsigned char [16], MD4_CTX *));

/*unsigned char *MD4 (unsigned char *data, unsigned int len, unsigned char *md);*/

#endif      /* ifdef HAVE_OPENSSL */

#endif      /* ifndef _ed2k_hash_md4_h_included_ */

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