md5.cpp File Reference

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Detailed Description

MD5 source.

Author:

David Ameller <nail@menta.net>

Copyright

Copyright (C) 2002-2004 David Ameller

All trademarks are property of their respective owner.

License

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.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Note:

This code implements the MD5 message-digest algorithm. The algorithm is due to Ron Rivest. This code was written by Colin Plumb in 1993, no copyright is claimed.

This code is in the public domain; do with it what you wish. Equivalent code is available from RSA Data Security, Inc. This code has been tested against that, and is equivalent, except that you don't need to include two pages of legalese with every copy.

To compute the message digest of a chunk of bytes, declare an MD5Context structure, pass it to MD5Init, call MD5Update as needed on buffers full of bytes, and then call MD5Final, which will fill a supplied 16-byte array with the digest.

#include "stdafx.h"
#include "md5.h"
#include "strmanip.h"

Include dependency graph for md5.cpp:

Defines
#define	F1(x, y, z)   (z^(x&(y^z)))
	The four core functions.
#define	F2(x, y, z)   F1(z, x, y)
	The four core functions.
#define	F3(x, y, z)   (x^y^z)
	The four core functions.
#define	F4(x, y, z)   (y^(x|~z))
	The four core functions.
#define	MD5STEP(f, w, x, y, z, data, s)   (w+=f(x, y, z)+data, w=w<<s|w>>(32-s), w+=x)
	This is the central step in the MD5 algorithm.

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Define Documentation

#define F1 (  x, y, z   )     (z^(x&(y^z)))

The four core functions. Note: F1 is optimized somewhat. #define F1(x, y, z) (x & y | ~x & z)

#define F2 (  x, y, z   )     F1(z, x, y)

The four core functions.

#define F3 (  x, y, z   )     (x^y^z)

The four core functions.

#define F4 (  x, y, z   )     (y^(x|~z))

The four core functions.

#define MD5STEP (  f, w, x, y, z, data, s   )     (w+=f(x, y, z)+data, w=w<<s|w>>(32-s), w+=x)

This is the central step in the MD5 algorithm.

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