//
// $Id: MD5.h 3659 2007-01-09 17:43:02Z bakerj $
//
//****************************************************************************************//
// Copyright (c) 2002-2007, The MITRE Corporation
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice, this list
// of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice, this
// list of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
// * Neither the name of The MITRE Corporation nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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//****************************************************************************************//
//
// MD5.cpp - source code for the C++/object oriented translation and
// modification of MD5.
//
// Translation and modification (c) 1995 by Mordechai T. Abzug
//
// This translation/ modification is provided "as is," without express or
// implied warranty of any kind.
//
// The translator/ modifier does not claim (1) that MD5 will do what you think
// it does; (2) that this translation/ modification is accurate; or (3) that
// this software is "merchantible." (Language for this disclaimer partially
// copied from the disclaimer below).
//
//****************************************************************************************//
//
// 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 <assert.h>
#include <fstream>
#include <iostream>
using namespace std;
/**
Provides md5 support to the application.
*/
class MD5 {
public:
// methods for controlled operation:
MD5 (); // simple initializer
void update (unsigned char *input, unsigned int input_length);
void update (FILE *file);
void finalize ();
// constructors for special circumstances. All these constructors finalize
// the MD5 context.
MD5 (FILE *file); // digest file, close, finalize
// methods to acquire finalized result
unsigned char *raw_digest (); // digest as a 16-byte binary array
char * hex_digest (); // digest as a 33-byte ascii-hex string
friend ostream& operator<< (ostream&, MD5 context);
private:
// first, some types:
typedef unsigned int uint4; // assumes integer is 4 words long
typedef unsigned short int uint2; // assumes short integer is 2 words long
typedef unsigned char uint1; // assumes char is 1 word long
// next, the private data:
uint4 state[4];
uint4 count[2]; // number of *bits*, mod 2^64
uint1 buffer[64]; // input buffer
uint1 digest[16];
uint1 finalized;
// last, the private methods, mostly static:
void init (); // called by all constructors
void transform (uint1 *buffer); // does the real update work. Note
// that length is implied to be 64.
static void encode (uint1 *dest, uint4 *src, uint4 length);
static void decode (uint4 *dest, uint1 *src, uint4 length);
static void memcpy (uint1 *dest, uint1 *src, uint4 length);
static void memset (uint1 *start, uint1 val, uint4 length);
static inline uint4 rotate_left (uint4 x, uint4 n);
static inline uint4 F (uint4 x, uint4 y, uint4 z);
static inline uint4 G (uint4 x, uint4 y, uint4 z);
static inline uint4 H (uint4 x, uint4 y, uint4 z);
static inline uint4 I (uint4 x, uint4 y, uint4 z);
static inline void FF (uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
uint4 s, uint4 ac);
static inline void GG (uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
uint4 s, uint4 ac);
static inline void HH (uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
uint4 s, uint4 ac);
static inline void II (uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
uint4 s, uint4 ac);
};
#endif