www.pudn.com > abot.rar > md5.cpp, change:2007-01-02,size:12405b


// Free for all implementation of the MD5 hash algorithm 
 
/* 
 ********************************************************************** 
 ** MD5.cpp                                                          ** 
 **                                                                  ** 
 ** - Style modified by Tony Ray, January 2001                       ** 
 **   Added support for randomizing initialization constants         ** 
 ** - Style modified by Dominik Reichl, April 2003                   ** 
 **   Optimized code                                                 ** 
 **                                                                  ** 
 ********************************************************************** 
 */ 
 
/* 
 ********************************************************************** 
 ** MD5.c                                                            ** 
 ** RSA Data Security, Inc. MD5 Message Digest Algorithm             ** 
 ** Created: 2/17/90 RLR                                             ** 
 ** Revised: 1/91 SRD,AJ,BSK,JT Reference C Version                  ** 
 ********************************************************************** 
 */ 
 
/* 
 ********************************************************************** 
 ** Copyright (C) 1990, RSA Data Security, Inc. 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.                                   ** 
 ********************************************************************** 
 */ 
 
#include <stdio.h> 
#include <stdlib.h> 
 
#include "MD5.h" 
 
/* Padding */ 
static unsigned char MD5_PADDING[64] = { 
	0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 
}; 
 
/* MD5_F, MD5_G and MD5_H are basic MD5 functions: selection, majority, parity */ 
#define MD5_F(x, y, z) (((x) & (y)) | ((~x) & (z))) 
#define MD5_G(x, y, z) (((x) & (z)) | ((y) & (~z))) 
#define MD5_H(x, y, z) ((x) ^ (y) ^ (z)) 
#define MD5_I(x, y, z) ((y) ^ ((x) | (~z))) 
 
/* ROTATE_LEFT rotates x left n bits */ 
#ifndef ROTATE_LEFT 
#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n)))) 
#endif 
 
/* MD5_FF, MD5_GG, MD5_HH, and MD5_II transformations for rounds 1, 2, 3, and 4 */ 
/* Rotation is separate from addition to prevent recomputation */ 
#define MD5_FF(a, b, c, d, x, s, ac) {(a) += MD5_F ((b), (c), (d)) + (x) + (UINT4)(ac); (a) = ROTATE_LEFT ((a), (s)); (a) += (b); } 
#define MD5_GG(a, b, c, d, x, s, ac) {(a) += MD5_G ((b), (c), (d)) + (x) + (UINT4)(ac); (a) = ROTATE_LEFT ((a), (s)); (a) += (b); } 
#define MD5_HH(a, b, c, d, x, s, ac) {(a) += MD5_H ((b), (c), (d)) + (x) + (UINT4)(ac); (a) = ROTATE_LEFT ((a), (s)); (a) += (b); } 
#define MD5_II(a, b, c, d, x, s, ac) {(a) += MD5_I ((b), (c), (d)) + (x) + (UINT4)(ac); (a) = ROTATE_LEFT ((a), (s)); (a) += (b); } 
 
/* Constants for transformation */ 
#define MD5_S11 7  /* Round 1 */ 
#define MD5_S12 12 
#define MD5_S13 17 
#define MD5_S14 22 
#define MD5_S21 5  /* Round 2 */ 
#define MD5_S22 9 
#define MD5_S23 14 
#define MD5_S24 20 
#define MD5_S31 4  /* Round 3 */ 
#define MD5_S32 11 
#define MD5_S33 16 
#define MD5_S34 23 
#define MD5_S41 6  /* Round 4 */ 
#define MD5_S42 10 
#define MD5_S43 15 
#define MD5_S44 21 
 
/* Basic MD5 step. MD5_Transform buf based on in */ 
static void MD5_Transform (UINT4 *buf, UINT4 *in) 
{ 
	UINT4 a = buf[0], b = buf[1], c = buf[2], d = buf[3]; 
 
	/* Round 1 */ 
	MD5_FF ( a, b, c, d, in[ 0], MD5_S11, (UINT4) 3614090360u); /* 1 */ 
	MD5_FF ( d, a, b, c, in[ 1], MD5_S12, (UINT4) 3905402710u); /* 2 */ 
	MD5_FF ( c, d, a, b, in[ 2], MD5_S13, (UINT4)  606105819u); /* 3 */ 
	MD5_FF ( b, c, d, a, in[ 3], MD5_S14, (UINT4) 3250441966u); /* 4 */ 
	MD5_FF ( a, b, c, d, in[ 4], MD5_S11, (UINT4) 4118548399u); /* 5 */ 
	MD5_FF ( d, a, b, c, in[ 5], MD5_S12, (UINT4) 1200080426u); /* 6 */ 
	MD5_FF ( c, d, a, b, in[ 6], MD5_S13, (UINT4) 2821735955u); /* 7 */ 
	MD5_FF ( b, c, d, a, in[ 7], MD5_S14, (UINT4) 4249261313u); /* 8 */ 
	MD5_FF ( a, b, c, d, in[ 8], MD5_S11, (UINT4) 1770035416u); /* 9 */ 
	MD5_FF ( d, a, b, c, in[ 9], MD5_S12, (UINT4) 2336552879u); /* 10 */ 
	MD5_FF ( c, d, a, b, in[10], MD5_S13, (UINT4) 4294925233u); /* 11 */ 
	MD5_FF ( b, c, d, a, in[11], MD5_S14, (UINT4) 2304563134u); /* 12 */ 
	MD5_FF ( a, b, c, d, in[12], MD5_S11, (UINT4) 1804603682u); /* 13 */ 
	MD5_FF ( d, a, b, c, in[13], MD5_S12, (UINT4) 4254626195u); /* 14 */ 
	MD5_FF ( c, d, a, b, in[14], MD5_S13, (UINT4) 2792965006u); /* 15 */ 
	MD5_FF ( b, c, d, a, in[15], MD5_S14, (UINT4) 1236535329u); /* 16 */ 
 
	/* Round 2 */ 
	MD5_GG ( a, b, c, d, in[ 1], MD5_S21, (UINT4) 4129170786u); /* 17 */ 
	MD5_GG ( d, a, b, c, in[ 6], MD5_S22, (UINT4) 3225465664u); /* 18 */ 
	MD5_GG ( c, d, a, b, in[11], MD5_S23, (UINT4)  643717713u); /* 19 */ 
	MD5_GG ( b, c, d, a, in[ 0], MD5_S24, (UINT4) 3921069994u); /* 20 */ 
	MD5_GG ( a, b, c, d, in[ 5], MD5_S21, (UINT4) 3593408605u); /* 21 */ 
	MD5_GG ( d, a, b, c, in[10], MD5_S22, (UINT4)   38016083u); /* 22 */ 
	MD5_GG ( c, d, a, b, in[15], MD5_S23, (UINT4) 3634488961u); /* 23 */ 
	MD5_GG ( b, c, d, a, in[ 4], MD5_S24, (UINT4) 3889429448u); /* 24 */ 
	MD5_GG ( a, b, c, d, in[ 9], MD5_S21, (UINT4)  568446438u); /* 25 */ 
	MD5_GG ( d, a, b, c, in[14], MD5_S22, (UINT4) 3275163606u); /* 26 */ 
	MD5_GG ( c, d, a, b, in[ 3], MD5_S23, (UINT4) 4107603335u); /* 27 */ 
	MD5_GG ( b, c, d, a, in[ 8], MD5_S24, (UINT4) 1163531501u); /* 28 */ 
	MD5_GG ( a, b, c, d, in[13], MD5_S21, (UINT4) 2850285829u); /* 29 */ 
	MD5_GG ( d, a, b, c, in[ 2], MD5_S22, (UINT4) 4243563512u); /* 30 */ 
	MD5_GG ( c, d, a, b, in[ 7], MD5_S23, (UINT4) 1735328473u); /* 31 */ 
	MD5_GG ( b, c, d, a, in[12], MD5_S24, (UINT4) 2368359562u); /* 32 */ 
 
	/* Round 3 */ 
	MD5_HH ( a, b, c, d, in[ 5], MD5_S31, (UINT4) 4294588738u); /* 33 */ 
	MD5_HH ( d, a, b, c, in[ 8], MD5_S32, (UINT4) 2272392833u); /* 34 */ 
	MD5_HH ( c, d, a, b, in[11], MD5_S33, (UINT4) 1839030562u); /* 35 */ 
	MD5_HH ( b, c, d, a, in[14], MD5_S34, (UINT4) 4259657740u); /* 36 */ 
	MD5_HH ( a, b, c, d, in[ 1], MD5_S31, (UINT4) 2763975236u); /* 37 */ 
	MD5_HH ( d, a, b, c, in[ 4], MD5_S32, (UINT4) 1272893353u); /* 38 */ 
	MD5_HH ( c, d, a, b, in[ 7], MD5_S33, (UINT4) 4139469664u); /* 39 */ 
	MD5_HH ( b, c, d, a, in[10], MD5_S34, (UINT4) 3200236656u); /* 40 */ 
	MD5_HH ( a, b, c, d, in[13], MD5_S31, (UINT4)  681279174u); /* 41 */ 
	MD5_HH ( d, a, b, c, in[ 0], MD5_S32, (UINT4) 3936430074u); /* 42 */ 
	MD5_HH ( c, d, a, b, in[ 3], MD5_S33, (UINT4) 3572445317u); /* 43 */ 
	MD5_HH ( b, c, d, a, in[ 6], MD5_S34, (UINT4)   76029189u); /* 44 */ 
	MD5_HH ( a, b, c, d, in[ 9], MD5_S31, (UINT4) 3654602809u); /* 45 */ 
	MD5_HH ( d, a, b, c, in[12], MD5_S32, (UINT4) 3873151461u); /* 46 */ 
	MD5_HH ( c, d, a, b, in[15], MD5_S33, (UINT4)  530742520u); /* 47 */ 
	MD5_HH ( b, c, d, a, in[ 2], MD5_S34, (UINT4) 3299628645u); /* 48 */ 
 
	/* Round 4 */ 
	MD5_II ( a, b, c, d, in[ 0], MD5_S41, (UINT4) 4096336452u); /* 49 */ 
	MD5_II ( d, a, b, c, in[ 7], MD5_S42, (UINT4) 1126891415u); /* 50 */ 
	MD5_II ( c, d, a, b, in[14], MD5_S43, (UINT4) 2878612391u); /* 51 */ 
	MD5_II ( b, c, d, a, in[ 5], MD5_S44, (UINT4) 4237533241u); /* 52 */ 
	MD5_II ( a, b, c, d, in[12], MD5_S41, (UINT4) 1700485571u); /* 53 */ 
	MD5_II ( d, a, b, c, in[ 3], MD5_S42, (UINT4) 2399980690u); /* 54 */ 
	MD5_II ( c, d, a, b, in[10], MD5_S43, (UINT4) 4293915773u); /* 55 */ 
	MD5_II ( b, c, d, a, in[ 1], MD5_S44, (UINT4) 2240044497u); /* 56 */ 
	MD5_II ( a, b, c, d, in[ 8], MD5_S41, (UINT4) 1873313359u); /* 57 */ 
	MD5_II ( d, a, b, c, in[15], MD5_S42, (UINT4) 4264355552u); /* 58 */ 
	MD5_II ( c, d, a, b, in[ 6], MD5_S43, (UINT4) 2734768916u); /* 59 */ 
	MD5_II ( b, c, d, a, in[13], MD5_S44, (UINT4) 1309151649u); /* 60 */ 
	MD5_II ( a, b, c, d, in[ 4], MD5_S41, (UINT4) 4149444226u); /* 61 */ 
	MD5_II ( d, a, b, c, in[11], MD5_S42, (UINT4) 3174756917u); /* 62 */ 
	MD5_II ( c, d, a, b, in[ 2], MD5_S43, (UINT4)  718787259u); /* 63 */ 
	MD5_II ( b, c, d, a, in[ 9], MD5_S44, (UINT4) 3951481745u); /* 64 */ 
 
	buf[0] += a; 
	buf[1] += b; 
	buf[2] += c; 
	buf[3] += d; 
} 
 
// Set pseudoRandomNumber to zero for RFC MD5 implementation 
void MD5Init (MD5_CTX *mdContext, unsigned long pseudoRandomNumber) 
{ 
	mdContext->i[0] = mdContext->i[1] = (UINT4)0; 
 
	/* Load magic initialization constants */ 
	mdContext->buf[0] = (UINT4)0x67452301 + (pseudoRandomNumber * 11); 
	mdContext->buf[1] = (UINT4)0xefcdab89 + (pseudoRandomNumber * 71); 
	mdContext->buf[2] = (UINT4)0x98badcfe + (pseudoRandomNumber * 37); 
	mdContext->buf[3] = (UINT4)0x10325476 + (pseudoRandomNumber * 97); 
} 
 
void MD5Update (MD5_CTX *mdContext, unsigned char *inBuf, unsigned int inLen) 
{ 
	UINT4 in[16]; 
	int mdi = 0; 
	unsigned int i = 0, ii = 0; 
 
	/* Compute number of bytes mod 64 */ 
	mdi = (int)((mdContext->i[0] >> 3) & 0x3F); 
 
	/* Update number of bits */ 
	if ((mdContext->i[0] + ((UINT4)inLen << 3)) < mdContext->i[0]) 
		mdContext->i[1]++; 
	mdContext->i[0] += ((UINT4)inLen << 3); 
	mdContext->i[1] += ((UINT4)inLen >> 29); 
 
	while (inLen--) 
	{ 
		/* Add new character to buffer, increment mdi */ 
		mdContext->in[mdi++] = *inBuf++; 
 
		/* Transform if necessary */ 
		if (mdi == 0x40) 
		{ 
			for (i = 0, ii = 0; i < 16; i++, ii += 4) 
				in[i] = (((UINT4)mdContext->in[ii+3]) << 24) | 
					(((UINT4)mdContext->in[ii+2]) << 16) | 
					(((UINT4)mdContext->in[ii+1]) << 8) | 
					((UINT4)mdContext->in[ii]); 
 
			MD5_Transform (mdContext->buf, in); 
			mdi = 0; 
		} 
	} 
} 
 
void MD5Final (MD5_CTX *mdContext) 
{ 
	UINT4 in[16]; 
	int mdi = 0; 
	unsigned int i = 0, ii = 0, padLen = 0; 
 
	/* Save number of bits */ 
	in[14] = mdContext->i[0]; 
	in[15] = mdContext->i[1]; 
 
	/* Compute number of bytes mod 64 */ 
	mdi = (int)((mdContext->i[0] >> 3) & 0x3F); 
 
	/* Pad out to 56 mod 64 */ 
	padLen = (mdi < 56) ? (56 - mdi) : (120 - mdi); 
	MD5Update (mdContext, MD5_PADDING, padLen); 
 
	/* Append length in bits and transform */ 
	for (i = 0, ii = 0; i < 14; i++, ii += 4) 
		in[i] = (((UINT4)mdContext->in[ii+3]) << 24) | 
			(((UINT4)mdContext->in[ii+2]) << 16) | 
			(((UINT4)mdContext->in[ii+1]) <<  8) | 
			((UINT4)mdContext->in[ii]); 
	MD5_Transform (mdContext->buf, in); 
 
	/* Store buffer in digest */ 
	for (i = 0, ii = 0; i < 4; i++, ii += 4) 
	{ 
		mdContext->digest[ii]   = (unsigned char)( mdContext->buf[i]        & 0xFF); 
		mdContext->digest[ii+1] = (unsigned char)((mdContext->buf[i] >>  8) & 0xFF); 
		mdContext->digest[ii+2] = (unsigned char)((mdContext->buf[i] >> 16) & 0xFF); 
		mdContext->digest[ii+3] = (unsigned char)((mdContext->buf[i] >> 24) & 0xFF); 
	} 
} 
 
void MD5Hash(char Input[128], int Size) { 
 
	unsigned int i; 
 
	MD5_CTX m_md5; 
	MD5Init(&m_md5, 0); 
	MD5Update(&m_md5, (unsigned char *)Input, Size); 
	MD5Final(&m_md5); 
 
	sprintf(Input, ""); 
 
	for(i = 0; i < 16; i++) 
	{ 
		sprintf(Input, "%s%02X", Input, m_md5.digest[i]); 
	} 
}