VisualC++ J'va y penser ... | Code :
- /*
- **********************************************************************
- ** md5.h -- Header file for implementation of MD5 **
- ** RSA Data Security, Inc. MD5 Message Digest Algorithm **
- ** Created: 2/17/90 RLR **
- ** Revised: 12/27/90 SRD,AJ,BSK,JT Reference C version **
- ** Revised (for MD5): RLR 4/27/91 **
- ** -- G modified to have y&~z instead of y&z **
- ** -- FF, GG, HH modified to add in last register done **
- ** -- Access pattern: round 2 works mod 5, round 3 works mod 3 **
- ** -- distinct additive constant for each step **
- ** -- round 4 added, working mod 7 **
- **********************************************************************
- */
- /*
- **********************************************************************
- ** 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. **
- **********************************************************************
- */
- #ifndef __MD5_H
- #define __MD5_H
- #ifdef __cplusplus
- extern "C"
- {
- #endif
- /* typedef a 32 bit type */
- typedef unsigned long int UINT4;
- /* Data structure for MD5 (Message Digest) computation */
- typedef struct
- {
- UINT4 i[2]; /* number of _bits_ handled mod 2^64 */
- UINT4 buf[4]; /* scratch buffer */
- unsigned char in[64]; /* input buffer */
- unsigned char digest[16]; /* actual digest after MD5Final call */
- }
- MD5_CTX;
- void MD5Init (MD5_CTX *);
- void MD5Update (MD5_CTX *, unsigned char *, unsigned int);
- void MD5Final (MD5_CTX *);
- /*
- **********************************************************************
- ** End of md5.h **
- ******************************* (cut) ********************************
- */
- #ifdef __cplusplus
- };
- #endif
- #endif
|
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 "stdafx.h"
- /* -- include the following line if the md5.h header file is separate -- */
- #include "md5.h"
- /* forward declaration */
- static void Transform (UINT4*, UINT4*);
- static unsigned char 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
- };
- /* F, G and H are basic MD5 functions: selection, majority, parity */
- #define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
- #define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
- #define H(x, y, z) ((x) ^ (y) ^ (z))
- #define I(x, y, z) ((y) ^ ((x) | (~z)))
- /* ROTATE_LEFT rotates x left n bits */
- #define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
- /* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4 */
- /* Rotation is separate from addition to prevent recomputation */
- #define FF(a, b, c, d, x, s, ac) \
- {(a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
- }
- #define GG(a, b, c, d, x, s, ac) \
- {(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
- }
- #define HH(a, b, c, d, x, s, ac) \
- {(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
- }
- #define II(a, b, c, d, x, s, ac) \
- {(a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
- }
- void MD5Init (MD5_CTX *mdContext)
- {
- mdContext->i[0] = mdContext->i[1] = (UINT4)0;
- /* Load magic initialization constants.
- */
- mdContext->buf[0] = (UINT4)0x67452301;
- mdContext->buf[1] = (UINT4)0xefcdab89;
- mdContext->buf[2] = (UINT4)0x98badcfe;
- mdContext->buf[3] = (UINT4)0x10325476;
- }
- void MD5Update (MD5_CTX *mdContext, unsigned char *inBuf, unsigned int inLen)
- {
- UINT4 in[16];
- int mdi;
- unsigned int i, ii;
- /* 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]);
- Transform (mdContext->buf, in);
- mdi = 0;
- }
- }
- }
- void MD5Final (MD5_CTX *mdContext)
- {
- UINT4 in[16];
- int mdi;
- unsigned int i, ii;
- unsigned int padLen;
- /* 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, 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]);
- 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);
- }
- }
- /* Basic MD5 step. Transform buf based on in.
- */
- static void Transform (UINT4 *buf, UINT4 *in)
- {
- UINT4 a = buf[0], b = buf[1], c = buf[2], d = buf[3];
- /* Round 1 */
- #define S11 7
- #define S12 12
- #define S13 17
- #define S14 22
- FF ( a, b, c, d, in[ 0], S11, 3614090360U); /* 1 */
- FF ( d, a, b, c, in[ 1], S12, 3905402710U); /* 2 */
- FF ( c, d, a, b, in[ 2], S13, 606105819U); /* 3 */
- FF ( b, c, d, a, in[ 3], S14, 3250441966U); /* 4 */
- FF ( a, b, c, d, in[ 4], S11, 4118548399U); /* 5 */
- FF ( d, a, b, c, in[ 5], S12, 1200080426U); /* 6 */
- FF ( c, d, a, b, in[ 6], S13, 2821735955U); /* 7 */
- FF ( b, c, d, a, in[ 7], S14, 4249261313U); /* 8 */
- FF ( a, b, c, d, in[ 8], S11, 1770035416U); /* 9 */
- FF ( d, a, b, c, in[ 9], S12, 2336552879U); /* 10 */
- FF ( c, d, a, b, in[10], S13, 4294925233U); /* 11 */
- FF ( b, c, d, a, in[11], S14, 2304563134U); /* 12 */
- FF ( a, b, c, d, in[12], S11, 1804603682U); /* 13 */
- FF ( d, a, b, c, in[13], S12, 4254626195U); /* 14 */
- FF ( c, d, a, b, in[14], S13, 2792965006U); /* 15 */
- FF ( b, c, d, a, in[15], S14, 1236535329U); /* 16 */
- /* Round 2 */
- #define S21 5
- #define S22 9
- #define S23 14
- #define S24 20
- GG ( a, b, c, d, in[ 1], S21, 4129170786U); /* 17 */
- GG ( d, a, b, c, in[ 6], S22, 3225465664U); /* 18 */
- GG ( c, d, a, b, in[11], S23, 643717713U); /* 19 */
- GG ( b, c, d, a, in[ 0], S24, 3921069994U); /* 20 */
- GG ( a, b, c, d, in[ 5], S21, 3593408605U); /* 21 */
- GG ( d, a, b, c, in[10], S22, 38016083U); /* 22 */
- GG ( c, d, a, b, in[15], S23, 3634488961U); /* 23 */
- GG ( b, c, d, a, in[ 4], S24, 3889429448U); /* 24 */
- GG ( a, b, c, d, in[ 9], S21, 568446438U); /* 25 */
- GG ( d, a, b, c, in[14], S22, 3275163606U); /* 26 */
- GG ( c, d, a, b, in[ 3], S23, 4107603335U); /* 27 */
- GG ( b, c, d, a, in[ 8], S24, 1163531501U); /* 28 */
- GG ( a, b, c, d, in[13], S21, 2850285829U); /* 29 */
- GG ( d, a, b, c, in[ 2], S22, 4243563512U); /* 30 */
- GG ( c, d, a, b, in[ 7], S23, 1735328473U); /* 31 */
- GG ( b, c, d, a, in[12], S24, 2368359562U); /* 32 */
- /* Round 3 */
- #define S31 4
- #define S32 11
- #define S33 16
- #define S34 23
- HH ( a, b, c, d, in[ 5], S31, 4294588738U); /* 33 */
- HH ( d, a, b, c, in[ 8], S32, 2272392833U); /* 34 */
- HH ( c, d, a, b, in[11], S33, 1839030562U); /* 35 */
- HH ( b, c, d, a, in[14], S34, 4259657740U); /* 36 */
- HH ( a, b, c, d, in[ 1], S31, 2763975236U); /* 37 */
- HH ( d, a, b, c, in[ 4], S32, 1272893353U); /* 38 */
- HH ( c, d, a, b, in[ 7], S33, 4139469664U); /* 39 */
- HH ( b, c, d, a, in[10], S34, 3200236656U); /* 40 */
- HH ( a, b, c, d, in[13], S31, 681279174U); /* 41 */
- HH ( d, a, b, c, in[ 0], S32, 3936430074U); /* 42 */
- HH ( c, d, a, b, in[ 3], S33, 3572445317U); /* 43 */
- HH ( b, c, d, a, in[ 6], S34, 76029189U); /* 44 */
- HH ( a, b, c, d, in[ 9], S31, 3654602809U); /* 45 */
- HH ( d, a, b, c, in[12], S32, 3873151461U); /* 46 */
- HH ( c, d, a, b, in[15], S33, 530742520U); /* 47 */
- HH ( b, c, d, a, in[ 2], S34, 3299628645U); /* 48 */
- /* Round 4 */
- #define S41 6
- #define S42 10
- #define S43 15
- #define S44 21
- II ( a, b, c, d, in[ 0], S41, 4096336452U); /* 49 */
- II ( d, a, b, c, in[ 7], S42, 1126891415U); /* 50 */
- II ( c, d, a, b, in[14], S43, 2878612391U); /* 51 */
- II ( b, c, d, a, in[ 5], S44, 4237533241U); /* 52 */
- II ( a, b, c, d, in[12], S41, 1700485571U); /* 53 */
- II ( d, a, b, c, in[ 3], S42, 2399980690U); /* 54 */
- II ( c, d, a, b, in[10], S43, 4293915773U); /* 55 */
- II ( b, c, d, a, in[ 1], S44, 2240044497U); /* 56 */
- II ( a, b, c, d, in[ 8], S41, 1873313359U); /* 57 */
- II ( d, a, b, c, in[15], S42, 4264355552U); /* 58 */
- II ( c, d, a, b, in[ 6], S43, 2734768916U); /* 59 */
- II ( b, c, d, a, in[13], S44, 1309151649U); /* 60 */
- II ( a, b, c, d, in[ 4], S41, 4149444226U); /* 61 */
- II ( d, a, b, c, in[11], S42, 3174756917U); /* 62 */
- II ( c, d, a, b, in[ 2], S43, 718787259U); /* 63 */
- II ( b, c, d, a, in[ 9], S44, 3951481745U); /* 64 */
- buf[0] += a;
- buf[1] += b;
- buf[2] += c;
- buf[3] += d;
- }
- /*
- **********************************************************************
- ** End of md5.c **
- ******************************* (cut) ********************************
- */
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Exemple d utilisation (md5 pour mdp sur protocole MSN)
Code :
- ...
- CString csHash;
- csHash.Format("%s%s" ,CString(hash), m_csUserPass);
- MD5_CTX mdContext;
- MD5Init(&mdContext);
- MD5Update(&mdContext, (unsigned char*)csHash.GetBuffer(0), csHash.GetLength());
- MD5Final(&mdContext);
- CString csFinal;
- for(int c=0; c < 16; c++) {
- CString csCar;
- csCar.Format("%02x", mdContext.digest[c]);
- csFinal += csCar;
- }
- csCommand.Format("USR %d MD5 S %s\r\n", m_uiMainID++, csFinal);
- ...
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