md5.cpp

序列号生成工具,使用MD5加密算法,生成程序的序列号,帮助程序员保护自己的产权.

// MD5.cpp: implementation of the CMD5 class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "UserRegister.h"
#include "MD5.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CMD5::CMD5()
{

}

CMD5::~CMD5()
{

}


void CMD5::MD5Init (MD5_CTX *context)    /* context */
{
	context->count[0] = context->count[1] = 0;
	context->state[0] = 0x67452301;    /* Load magic initialization constants.*/
	context->state[1] = 0xefcdab89;
	context->state[2] = 0x98badcfe;
	context->state[3] = 0x10325476;
}

/* -----------------------------------------------------------------------------------
   MD5 block update operation. Continues an MD5 message-digest
   operation, processing another message block, and updating the  context.
-------------------------------------------------------------------------------------*/
                /* context */     /* input block */  /* length of input block */
void CMD5::MD5Update(MD5_CTX *context, unsigned char *input,unsigned int inputLen  )
{
	unsigned int i, index, partLen;
	index = (unsigned int)((context->count[0] >> 3) & 0x3F);   /* Compute number of bytes mod 64 */

	if ( (context->count[0] += ( (UINT4)inputLen << 3) ) < ( (UINT4)inputLen << 3 ) )
		context->count[1]++;

	context->count[1] += ((UINT4)inputLen >> 29);
	partLen = 64 - index;

	/* Transform as many times as possible.*/
	if (inputLen >= partLen) 
	{
		MD5_memcpy( (POINTER)&context->buffer[index], (POINTER)input, partLen);
		MD5Transform (context->state, context->buffer);

		for (i = partLen; i + 63 < inputLen; i += 64)
			MD5Transform (context->state, &input[i]);

		index = 0;
	}
	else
		i = 0;
	/* Buffer remaining input */
	MD5_memcpy( (POINTER)&context->buffer[index], (POINTER)&input[i],inputLen-i );
}

/* 
  MD5 finalization. Ends an MD5 message-digest operation, writing the
  the message digest and zeroizing the context.
*/
void CMD5::MD5Final (unsigned char digest[16], MD5_CTX *context)
                /* message digest */      /* context */
{
	unsigned char bits[8];
	unsigned int index, padLen;

	Encode (bits, context->count, 8); /* Save number of bits */

	/* Pad out to 56 mod 64.*/
	index = (unsigned int)((context->count[0] >> 3) & 0x3f);
	padLen = (index < 56) ? (56 - index) : (120 - index);
	MD5Update (context,(unsigned char*) PADDING, padLen);

	MD5Update (context, bits, 8);   /* Append length (before padding) */
	Encode (digest, context->state, 16); /* Store state in digest */

	/* Zeroize sensitive information.*/
	MD5_memset ((POINTER)context, 0, sizeof (*context));
}

/* MD5 basic transformation. Transforms state based on block.
 */
void CMD5::MD5Transform (UINT4 state[4],unsigned char block[64])
{
	//int i=0;
	UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];

	Decode (x, block, 64);
	/* Round 1 */
	FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
	FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
	FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
	FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
	FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
	FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
	FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
	FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
	FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
	FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
	FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
	FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
	FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
	FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
	FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
	FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
	/* Round 2 */
	GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
	GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
	GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
	GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
	GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
	GG (d, a, b, c, x[10], S22,  0x2441453); /* 22 */
	GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
	GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
	GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
	GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
	GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
	GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
	GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
	GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
	GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
	GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
	/* Round 3 */
	HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
	HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
	HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
	HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
	HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
	HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
	HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
	HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
	HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
	HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
	HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
	HH (b, c, d, a, x[ 6], S34,  0x4881d05); /* 44 */
	HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
	HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
	HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
	HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
	/* Round 4 */
	II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
	II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
	II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
	II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
	II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
	II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
	II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
	II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
	II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
	II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
	II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
	II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
	II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
	II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
	II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
	II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */

	state[0] += a;
	state[1] += b;
	state[2] += c;
	state[3] += d;

	/* Zeroize sensitive information.*/
	MD5_memset ((POINTER)x, 0, sizeof (x));
}

/* Encodes input (UINT4) into output (unsigned char). Assumes len is
  a multiple of 4.
 */
void CMD5::Encode (unsigned char *output,UINT4 *input,unsigned int len)
{
	unsigned int i, j;

	for (i = 0, j = 0; j < len; i++, j += 4) 
	{
		output[j] = (unsigned char)(input[i] & 0xff);
		output[j+1] = (unsigned char)((input[i] >> 8) & 0xff);
		output[j+2] = (unsigned char)((input[i] >> 16) & 0xff);
		output[j+3] = (unsigned char)((input[i] >> 24) & 0xff);
	}
}

/* Decodes input (unsigned char) into output (UINT4). Assumes len is
  a multiple of 4.
 */
void CMD5::Decode (UINT4 *output,unsigned char *input,unsigned int len)
{
	unsigned int i, j;

	for (i = 0, j = 0; j < len; i++, j += 4)
		output[i] = ((UINT4)input[j]) | (((UINT4)input[j+1]) << 8) | (((UINT4)input[j+2])
		<< 16) | (((UINT4)input[j+3]) << 24);
}

/* Note: Replace "for loop" with standard memcpy if possible. */
void CMD5::MD5_memcpy (POINTER output,POINTER input,unsigned int len)
{
	unsigned int i;

	for (i = 0; i < len; i++)
		output[i] = input[i];
}

/* Note: Replace "for loop" with standard memset if possible. */
void CMD5::MD5_memset (POINTER output,int value,unsigned int len)
{
	unsigned int i;

	for (i = 0; i < len; i++)
		((char *)output)[i] = (char)value;
}

/* Digests a string and prints the result. */
char* CMD5::MDString (char *string)
{
	MD5_CTX context;
	unsigned char digest[16];
	char output1[33];
	static  char output[33]={"\0"};
	unsigned int len = strlen (string);
	int i;
	MD5Init (&context);
	MD5Update (&context, (unsigned char*)string, len);
	MD5Final (digest, &context);

	for (i = 0; i < 16; i++)
	{
		sprintf(&(output1[2*i]),"%02X",(unsigned char)digest[i]);
		//sprintf(&(output1[2*i+1]),"%02x",(unsigned char)(digest[i]<<4));
	}
	for(i=0;i<32;i++)
		output[i]=output1[i];
	return output;
}

  
/* Digests a file and prints the result. */
//char* CMD5::MDFile (CString filename)
CString CMD5::MDFile (CString filename)
{ 
	static char output[33]={"\0"};
	CString result;
	MD5_CTX context;
	int len;
	unsigned char buffer[1024], digest[16];
	int i;
	char output1[33];
	CFile file1(filename,CFile::modeRead);
	if(file1.m_hFile<0)
		return "";
	else
	{
		MD5Init (&context);
		len = file1.Read(buffer,1024);

		while (len>0)//, 1024, file))
		{
   			MD5Update (&context, buffer, len);
			len= file1.Read(buffer, 1024);
		}
		MD5Final (digest, &context);
		file1.Close();
		for (i = 0; i < 16; i++)
		{
			sprintf(&(output1[2*i]),"%02X",(unsigned char)digest[i]);
			//	sprintf(&(output1[2*i+1]),"%02x",(unsigned char)(digest[i]<<4));
		}
		for(i=0;i<32;i++)
			output[i]=output1[i];
		result = output;
		return result;
	}
}

char* CMD5::hmac_md5(char* text,char*  key)
{
	char   digest[16];
	char   output1[32];
	static char output[33]={"\0"};
	MD5_CTX context;
	unsigned char k_ipad[65];    /* inner padding -
								  * key XORd with ipad
								  */
	unsigned char k_opad[65];    /* outer padding -
								  * key XORd with opad
								  */
	unsigned char tk[16];
	int i;
	int text_len = strlen (text);
	int key_len=strlen(key);
	/* if key is longer than 64 bytes reset it to key=MD5(key) */
	if (key_len > 64) 
	{
		MD5_CTX      tctx;

		MD5Init(&tctx);
		MD5Update(&tctx,(unsigned char*) key, key_len);
		MD5Final(tk, &tctx);

		key = (char*)tk;
		key_len = 16;
	}

	/*
	 * the HMAC_MD5 transform looks like:
	 *
	 * MD5(K XOR opad, MD5(K XOR ipad, text))
	 *
	 * where K is an n byte key
	 * ipad is the byte 0x36 repeated 64 times
	 * opad is the byte 0x5c repeated 64 times
	 * and text is the data being protected
	 */

	/* start out by storing key in pads */

	/*bzero( k_ipad, sizeof k_ipad);
	  bzero( k_opad, sizeof k_opad);
	*/

	for(i=0;i<65;i++)
		k_ipad[i]=(unsigned char)0;
	for(i=0;i<65;i++)
		k_opad[i]=(unsigned char)0;

	/*bcopy( key, k_ipad, key_len);
	  bcopy( key, k_opad, key_len);
	 */
	for(i=0;i<key_len;i++)
	{
		k_ipad[i]=(unsigned char)key[i];
		k_opad[i]=(unsigned char)key[i];
	}

	/* XOR key with ipad and opad values */
	for (i=0; i<64; i++) 
	{
		k_ipad[i] ^= 0x36;
		k_opad[i] ^= 0x5c;
	}
	/*
	 * perform inner MD5
	 */
	MD5Init(&context);                   /* init context for 1st
										  * pass */
	MD5Update(&context, k_ipad, 64);      /* start with inner pad */
	MD5Update(&context, (unsigned char*)text, text_len); /* then text of datagram */
	MD5Final((unsigned char*)digest, &context);          /* finish up 1st pass */
	/*
	 * perform outer MD5
	 */
	MD5Init(&context);                   /* init context for 2nd
										  * pass */
	MD5Update(&context, k_opad, 64);     /* start with outer pad */
	MD5Update(&context,(unsigned char*) digest, 16);     /* then results of 1st
										  * hash */
	MD5Final((unsigned char*)digest, &context);          /* finish up 2nd pass */
	for (i = 0; i < 16; i++)
	{
		sprintf(&(output1[2*i]),"%02X",(unsigned char)digest[i]);
		sprintf(&(output1[2*i+1]),"%02X",(unsigned char)(digest[i]<<4));
	}
	for(i=0;i<32;i++)
		output[i]=output1[i]; 
	return output;     
}