390 lines
13 KiB
C++
390 lines
13 KiB
C++
// Md5A.cpp: implementation of the CMd5 class.
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//
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//////////////////////////////////////////////////////////////////////
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//#include "stdafx.h"
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//#include "Afxwin.h"
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#include "md5_encrypt.h"
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#ifdef _STONDEBUG_
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#undef THIS_FILE
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static char THIS_FILE[]=__FILE__;
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#define new DEBUG_NEW
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#endif
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//////////////////////////////////////////////////////////////////////
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// Construction/Destruction
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//////////////////////////////////////////////////////////////////////
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void MD5Init (MD5_CTX_ENCRYPT *context) /* context */
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{
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context->count[0] = context->count[1] = 0;
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context->state[0] = 0x67452301; /* Load magic initialization constants.*/
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context->state[1] = 0xefcdab89;
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context->state[2] = 0x98badcfe;
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context->state[3] = 0x10325476;
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}
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/* -----------------------------------------------------------------------------------
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MD5 block update operation. Continues an MD5 message-digest
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operation, processing another message block, and updating the context.
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-------------------------------------------------------------------------------------*/
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/* context */ /* input block */ /* length of input block */
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void MD5Update (MD5_CTX_ENCRYPT *context, unsigned char *input,unsigned int inputLen )
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{
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unsigned int i, index, partLen;
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index = (unsigned int)((context->count[0] >> 3) & 0x3F); /* Compute number of bytes mod 64 */
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if ( (context->count[0] += ( (UINT4)inputLen << 3) ) < ( (UINT4)inputLen << 3 ) )
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context->count[1]++;
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context->count[1] += ((UINT4)inputLen >> 29);
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partLen = 64 - index;
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/* Transform as many times as possible.*/
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if (inputLen >= partLen)
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{
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MD5_memcpy( (POINTER)&context->buffer[index], (POINTER)input, partLen);
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MD5Transform (context->state, context->buffer);
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for (i = partLen; i + 63 < inputLen; i += 64)
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MD5Transform (context->state, &input[i]);
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index = 0;
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}
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else
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i = 0;
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/* Buffer remaining input */
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MD5_memcpy( (POINTER)&context->buffer[index], (POINTER)&input[i],inputLen-i );
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}
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/*
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MD5 finalization. Ends an MD5 message-digest operation, writing the
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the message digest and zeroizing the context.
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*/
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void MD5Final (unsigned char digest[16], MD5_CTX_ENCRYPT *context)
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/* message digest */ /* context */
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{
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unsigned char bits[8];
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unsigned int index, padLen;
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Encode (bits, context->count, 8); /* Save number of bits */
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/* Pad out to 56 mod 64.*/
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index = (unsigned int)((context->count[0] >> 3) & 0x3f);
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padLen = (index < 56) ? (56 - index) : (120 - index);
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MD5Update (context,(unsigned char*) PADDING, padLen);
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MD5Update (context, bits, 8); /* Append length (before padding) */
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Encode (digest, context->state, 16); /* Store state in digest */
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/* Zeroize sensitive information.*/
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MD5_memset ((POINTER)context, 0, sizeof (*context));
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}
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/* MD5 basic transformation. Transforms state based on block.
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*/
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void MD5Transform (UINT4 state[4],unsigned char block[64])
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{
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int i=0;
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UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
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Decode (x, block, 64);
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/* Round 1 */
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FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
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FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
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FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
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FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
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FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
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FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
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FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
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FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
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FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
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FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
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FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
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FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
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FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
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FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
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FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
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FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
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/* Round 2 */
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GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
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GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
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GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
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GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
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GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
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GG (d, a, b, c, x[10], S22, 0x2441453); /* 22 */
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GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
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GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
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GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
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GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
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GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
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GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
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GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
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GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
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GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
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GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
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/* Round 3 */
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HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
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HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
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HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
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HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
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HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
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HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
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HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
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HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
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HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
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HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
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HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
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HH (b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */
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HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
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HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
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HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
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HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
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/* Round 4 */
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II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
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II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
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II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
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II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
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II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
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II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
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II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
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II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
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II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
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II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
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II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
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II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
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II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
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II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
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II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
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II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */
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state[0] += a;
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state[1] += b;
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state[2] += c;
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state[3] += d;
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/* Zeroize sensitive information.*/
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MD5_memset ((POINTER)x, 0, sizeof (x));
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}
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/* Encodes input (UINT4) into output (unsigned char). Assumes len is
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a multiple of 4.
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*/
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void Encode (unsigned char *output,UINT4 *input,unsigned int len)
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{
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unsigned int i, j;
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for (i = 0, j = 0; j < len; i++, j += 4)
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{
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output[j] = (unsigned char)(input[i] & 0xff);
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output[j+1] = (unsigned char)((input[i] >> 8) & 0xff);
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output[j+2] = (unsigned char)((input[i] >> 16) & 0xff);
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output[j+3] = (unsigned char)((input[i] >> 24) & 0xff);
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}
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}
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/* Decodes input (unsigned char) into output (UINT4). Assumes len is
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a multiple of 4.
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*/
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void Decode (UINT4 *output,unsigned char *input,unsigned int len)
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{
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unsigned int i, j;
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for (i = 0, j = 0; j < len; i++, j += 4)
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output[i] = ((UINT4)input[j]) | (((UINT4)input[j+1]) << 8) | (((UINT4)input[j+2]) << 16) | (((UINT4)input[j+3]) << 24);
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}
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/* Note: Replace "for loop" with standard memcpy if possible. */
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void MD5_memcpy (POINTER output,POINTER input,unsigned int len)
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{
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unsigned int i;
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for (i = 0; i < len; i++)
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output[i] = input[i];
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}
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/* Note: Replace "for loop" with standard memset if possible. */
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void MD5_memset (POINTER output,int value,unsigned int len)
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{
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unsigned int i;
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for (i = 0; i < len; i++)
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((char *)output)[i] = (char)value;
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}
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/* Digests a string and prints the result. */
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char* MDString (char *string)
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{
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MD5_CTX_ENCRYPT context;
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unsigned char digest[16];
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char output1[34];
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static char output[35]={"\0"};
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unsigned int len = ( unsigned int )strlen (string);
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int i;
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MD5Init (&context);
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MD5Update (&context, (unsigned char*)string, len);
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MD5Final (digest, &context);
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for (i = 0; i < 16; i++)
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{
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sprintf_s(&(output1[2*i]),34-2*i,"%02x",(unsigned char)digest[i]);
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//sprintf_s(&(output1[2*i+1]),"%02x",(unsigned char)(digest[i]<<4));
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}
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for(i=0;i<32;i++)
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output[i]=output1[i];
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return output;
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}
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/* Digests a file and prints the result. */
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//char* MDFile (CString filename)
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//CString MDFile (CString filename)
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//{
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// static char output[33]={"\0"};
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// CFile file;
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// CString result;
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// MD5_CTX_ENCRYPT context;
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// int len;
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// unsigned char buffer[1024], digest[16];
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// int i;
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// char output1[33];
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// //UINT aaa;
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// if (file.Open(filename,CFile::modeRead)==0)
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// {
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// //printf ("%s can't be opened\n", filename);
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// AfxMessageBoxNew("open file error");
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// return "";
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// }
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// else
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// {
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// MD5Init (&context);
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// while (len = file.Read (buffer, 1024))//, 1024, file))
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// MD5Update (&context, buffer, len);
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// MD5Final (digest, &context);
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// file.Close();
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// for (i = 0; i < 16; i++)
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// {
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// sprintf_s(&(output1[2*i]),"%02x",(unsigned char)digest[i]);
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// // sprintf_s(&(output1[2*i+1]),"%02x",(unsigned char)(digest[i]<<4));
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// }
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// for(i=0;i<32;i++)
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// output[i]=output1[i];
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// result = output;
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// return result;
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// }
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//}
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char* hmac_md5(char* text,char* key)
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{
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char digest[16];
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char output1[34];
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static char output[35]={"\0"};
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MD5_CTX_ENCRYPT context;
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unsigned char k_ipad[65]; /* inner padding -
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* key XORd with ipad
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*/
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unsigned char k_opad[65]; /* outer padding -
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* key XORd with opad
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*/
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unsigned char tk[16];
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int i;
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int text_len = strlen (text);
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int key_len=strlen(key);
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/* if key is longer than 64 bytes reset it to key=MD5(key) */
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if (key_len > 64)
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{
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MD5_CTX_ENCRYPT tctx;
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MD5Init(&tctx);
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MD5Update(&tctx,(unsigned char*) key, key_len);
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MD5Final(tk, &tctx);
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key = (char*)tk;
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key_len = 16;
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}
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/*
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* the HMAC_MD5 transform looks like:
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*
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* MD5(K XOR opad, MD5(K XOR ipad, text))
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*
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* where K is an n byte key
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* ipad is the byte 0x36 repeated 64 times
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* opad is the byte 0x5c repeated 64 times
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* and text is the data being protected
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*/
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/* start out by storing key in pads */
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/*bzero( k_ipad, sizeof k_ipad);
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bzero( k_opad, sizeof k_opad);
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*/
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for(i=0;i<65;i++)
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k_ipad[i]=(unsigned char)0;
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for(i=0;i<65;i++)
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k_opad[i]=(unsigned char)0;
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/*bcopy( key, k_ipad, key_len);
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bcopy( key, k_opad, key_len);
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*/
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for(i=0;i<key_len;i++)
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{
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k_ipad[i]=(unsigned char)key[i];
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k_opad[i]=(unsigned char)key[i];
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}
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/* XOR key with ipad and opad values */
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for (i=0; i<64; i++)
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{
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k_ipad[i] ^= 0x36;
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k_opad[i] ^= 0x5c;
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}
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/*
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* perform inner MD5
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*/
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MD5Init(&context); /* init context for 1st
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* pass */
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MD5Update(&context, k_ipad, 64); /* start with inner pad */
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MD5Update(&context, (unsigned char*)text, text_len); /* then text of datagram
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*/
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MD5Final((unsigned char*)digest, &context); /* finish up 1st pass */
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/*
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* perform outer MD5
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*/
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MD5Init(&context); /* init context for 2nd
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* pass */
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MD5Update(&context, k_opad, 64); /* start with outer pad */
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MD5Update(&context,(unsigned char*) digest, 16); /* then results of 1st
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* hash */
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MD5Final((unsigned char*)digest, &context); /* finish up 2nd pass */
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for (i = 0; i < 16; i++)
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{
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sprintf_s(&(output1[2*i]),34-i*2,"%02x",(unsigned char)digest[i]);
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sprintf_s(&(output1[2*i+1]),34-2*i+1,"%02x",(unsigned char)(digest[i]<<4));
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}
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for(i=0;i<32;i++)
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output[i]=output1[i];
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return output;
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}
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//extern "C" __declspec(dllexport) char* MD5String(char * pointer)
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//{
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// CMd5 md5;
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// return md5.MDString(pointer);
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//}
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//
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//extern "C" __declspec(dllexport) CString MD5File(CString filename)
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//{
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// CMd5 md5;
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// return md5.MDFile(filename);
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//}
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//extern "C" __declspec(dllexport) char* MD5_hmac(char* text, char* key)
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//{
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// CMd5 md5;
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// return md5.hmac_md5(text,key);
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//}
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