/* From RFC-1321/Appendices A.1/A.2 */
/* 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. MD5 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. MD5 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.
 */
#ifndef _MD5_H_
#define _MD5_H_

#include "config.h"
#include "uint4.h"

/* 
 * 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.
 */
/*
  #ifndef PROTOTYPES
  #define PROTOTYPES 0
  #endif
*/

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

/* 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.
 */
#if PROTOTYPES
#  define PROTO_LIST(list) list
#else
#  define PROTO_LIST(list) ()
#endif


/* MD5 context. */
typedef struct {
  UINT4 state[4];                                   /* state (ABCD) */
  UINT4 count[2];        /* number of bits, modulo 2^64 (lsb first) */
  unsigned char buffer[64];                         /* input buffer */
} MD5_CTX;

void MD5Init PROTO_LIST ((MD5_CTX *));
void MD5Update PROTO_LIST
  ((MD5_CTX *, unsigned char *, unsigned int));
void MD5Final PROTO_LIST ((unsigned char [16], MD5_CTX *));

#endif  /* _MD5_H_ */
