/*
 * 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.
 */

/*!
 * \file
 * \brief SIP-router core :: md5 hash support
 * \ingroup core
 * Module: \ref core
 */

#ifndef MD5_H
#define MD5_H

#include "md5global.h"

/**
 * \brief 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;

/**
 * \brief MD5 context initialization
 * 
 * MD5 context initialization. Begins an MD5 operation, writing a new context.
 * \param context initialized context
 */
void MD5Init PROTO_LIST ((MD5_CTX *));

/**
 * \brief MD5 block update operation
 * 
 * MD5 block update operation. Continues an MD5 message-digest
 * operation, processing another message block, and updating the
 * context.
 * \param context context
 * \param input input block
 * \param inputLen length of input block
 */
void MD5Update PROTO_LIST
  ((MD5_CTX *, unsigned char *, unsigned int));

  /**
 * \brief MD5 finalization
 * 
 * MD5 finalization. Ends an MD5 message-digest operation, writing the
 * the message digest and zeroizing the context.
 * \param digest message digest
 * \param context context
 */
void MD5Final PROTO_LIST ((unsigned char [16], MD5_CTX *));

#endif /* MD5_H */