encrypt.cpp

网狐棋牌（家园版）最新版本7.1.1源代码,共享组件源码

#include "StdAfx.h"
#include "Encrypt.h"

//数据大小
#define ENCRYPT_KEY_LEN					5									//密钥长度

//////////////////////////////////////////////////////////////////////////

#define S11		7
#define S12		12
#define S13		17
#define S14		22
#define S21		5
#define S22		9
#define S23 	14
#define S24 	20
#define S31 	4
#define S32 	11
#define S33 	16
#define S34 	23
#define S41 	6
#define S42 	10
#define S43 	15
#define S44 	21

#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)))

#define ROTATE_LEFT(x,n) (((x)<<(n))|((x)>>(32-(n))))

#define FF(a,b,c,d,x,s,ac)													\
{																			\
	(a)+=F((b),(c),(d))+(x)+(unsigned long int)(ac);						\
	(a)=ROTATE_LEFT((a),(s));												\
	(a)+=(b);																\
}

#define GG(a,b,c,d,x,s,ac)													\
{																			\
	(a)+=G((b),(c),(d))+(x)+(unsigned long int)(ac);						\
	(a)=ROTATE_LEFT ((a),(s));												\
	(a)+=(b);																\
}

#define HH(a,b,c,d,x,s,ac)													\
{																			\
	(a)+=H((b),(c),(d))+(x)+(unsigned long int)(ac);						\
	(a)=ROTATE_LEFT((a),(s));												\
	(a)+=(b);																\
}

#define II(a,b,c,d,x,s,ac)													\
{																			\
	(a)+=I((b),(c),(d))+(x)+(unsigned long int)(ac);						\
	(a)=ROTATE_LEFT((a),(s));												\
	(a)+=(b);																\
}

//////////////////////////////////////////////////////////////////////////

//MD5 加密类
class CMD5
{
	//变量定义
private:
	unsigned long int				state[4];
	unsigned long int				count[2];
	unsigned char					buffer[64];
	unsigned char					PADDING[64];

	//函数定义
public:
	//构造函数
	CMD5() { MD5Init(); }

	//功能函数
public:
	//最终结果
	void MD5Final(unsigned char digest[16]);
	//设置数值
	void MD5Update(unsigned char * input, unsigned int inputLen);

	//内部函数
private:
	//初始化
	void MD5Init();
	//置位函数
	void MD5_memset(unsigned char * output, int value, unsigned int len);
	//拷贝函数
	void MD5_memcpy(unsigned char * output, unsigned char * input, unsigned int len);
	//转换函数
	void MD5Transform(unsigned long int state[4], unsigned char block[64]);
	//编码函数
	void Encode(unsigned char * output, unsigned long int * input, unsigned int len);
	//解码函数
	void Decode(unsigned long int *output, unsigned char * input, unsigned int len);
};

//////////////////////////////////////////////////////////////////////////

//初始化
void CMD5::MD5Init()
{
	count[0]=0;
	count[1]=0;
	state[0]=0x67452301;
	state[1]=0xefcdab89;
	state[2]=0x98badcfe;
	state[3]=0x10325476;
	MD5_memset(PADDING,0,sizeof(PADDING));
	*PADDING=0x80;
	return;
}

//更新函数
void CMD5::MD5Update (unsigned char * input, unsigned int inputLen)
{
	unsigned int i,index,partLen;
	index=(unsigned int)((this->count[0]>>3)&0x3F);
	if ((count[0]+=((unsigned long int)inputLen<<3))<((unsigned long int)inputLen<<3)) count[1]++;
	count[1]+=((unsigned long int)inputLen>>29);
	partLen=64-index;
	if (inputLen>=partLen) 
	{
		MD5_memcpy((unsigned char*)&buffer[index],(unsigned char *)input,partLen);
		MD5Transform(state,buffer);
		for (i=partLen;i+63<inputLen;i+=64) MD5Transform(state,&input[i]);
		index=0;
	}
	else i=0;
	MD5_memcpy((unsigned char*)&buffer[index],(unsigned char *)&input[i],inputLen-i);
	return;
}

//最终结果
void CMD5::MD5Final(unsigned char digest[16])
{
	unsigned char bits[8];
	unsigned int index,padLen;
	Encode(bits,count,8);
	index=(unsigned int)((count[0]>>3)&0x3f);
	padLen=(index<56)?(56-index):(120-index);
	MD5Update( PADDING,padLen);
	MD5Update(bits,8);
	Encode(digest,state,16);
	MD5_memset((unsigned char*)this,0,sizeof (*this));
	MD5Init();
	return;
}

//转换函数
void CMD5::MD5Transform(unsigned long int state[4], unsigned char block[64])
{
	unsigned long int a=state[0],b=state[1],c=state[2],d=state[3],x[16];
	Decode(x,block,64);

	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 */

	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 */

	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 */

	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;

	MD5_memset((unsigned char *)x,0,sizeof(x));

	return;
}

//编码函数
void CMD5::Encode(unsigned char * output, unsigned long int * 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);
	}
	return;
}

//解码函数
void CMD5::Decode(unsigned long int *output, unsigned char *input, unsigned int len)
{
	unsigned int i,j;
	for (i=0,j=0;j<len;i++,j+=4)
	{
		output[i]=((unsigned long int)input[j])|(((unsigned long int)input[j+1])<<8)|
			(((unsigned long int)input[j+2])<<16)|(((unsigned long int)input[j+3])<< 24);
	}
	return;
}

//拷贝函数
void CMD5::MD5_memcpy(unsigned char * output, unsigned char * input,unsigned int len)
{
	for (unsigned int i=0;i<len;i++) output[i]=input[i];
}

//置位函数
void CMD5::MD5_memset (unsigned char * output, int value, unsigned int len)
{
	for (unsigned int i=0;i<len;i++) ((char *)output)[i]=(char)value;
}

//////////////////////////////////////////////////////////////////////////

//生成密文
void CMD5Encrypt::EncryptData(LPCTSTR pszSrcData, TCHAR szMD5Result[16])
{
	//加密密文
	CMD5 MD5Encrypt;
	UCHAR szResult[16];
	MD5Encrypt.MD5Update((unsigned char *)pszSrcData,lstrlen(pszSrcData)*sizeof(TCHAR));
	MD5Encrypt.MD5Final(szResult);

	//输出结果
	szMD5Result[0]=0;
	for (int i=0;i<16;i++) sprintf(&szMD5Result[i*2],"%02x",szResult[i]);

	return;
}

//////////////////////////////////////////////////////////////////////////

//生成密文
WORD CXOREncrypt::EncryptData(LPCTSTR pszSrcData, LPTSTR pszEncrypData, WORD wSize)
{
	//效验参数
	ASSERT(wSize>0);
	ASSERT(pszSrcData!=NULL);
	ASSERT(pszEncrypData!=NULL);

	//初始化参数
	pszEncrypData[0]=0;

	//生成密钥
	unsigned char szRandKey[ENCRYPT_KEY_LEN];
	szRandKey[0]=lstrlen(pszSrcData);
	for (WORD i=1;i<CountArray(szRandKey);i++) szRandKey[i]=rand()%255;

	//生成密文
	BYTE bTempCode=0;
	WORD wTimes=(szRandKey[0]+ENCRYPT_KEY_LEN-1)/ENCRYPT_KEY_LEN*ENCRYPT_KEY_LEN;
	if ((wTimes*4+1)>wSize) return wTimes*4+1;
	for (WORD i=0;i<wTimes;i++)
	{
		if (i<szRandKey[0]) bTempCode=pszSrcData[i]^szRandKey[i%ENCRYPT_KEY_LEN];
		else bTempCode=szRandKey[i%ENCRYPT_KEY_LEN]^(rand()%255);
		_snprintf(pszEncrypData+i*4,5,TEXT("%02x%02x"),szRandKey[i%ENCRYPT_KEY_LEN],bTempCode);
	}

	return wTimes*4;
}

//解开密文
WORD CXOREncrypt::CrevasseData(LPCTSTR pszEncrypData, LPTSTR pszSrcData, WORD wSize)
{
	//效验参数
	ASSERT(wSize>0);
	ASSERT(pszSrcData!=NULL);
	ASSERT(pszEncrypData!=NULL);

	//初始化参数
	pszSrcData[0]=0;

	//效验长度
	WORD wEncrypPassLen=lstrlen(pszEncrypData);
	if (wEncrypPassLen<ENCRYPT_KEY_LEN*4) return 0;

	//效验长度
	TCHAR * pEnd=NULL;
	TCHAR szTempBuffer[3]={pszEncrypData[0],pszEncrypData[1],0};
	WORD wSoureLength=(WORD)strtol(szTempBuffer,&pEnd,16);
	if (wEncrypPassLen!=((wSoureLength+ENCRYPT_KEY_LEN-1)/ENCRYPT_KEY_LEN*ENCRYPT_KEY_LEN*4)) return 0;
	if (wSoureLength>(wSize-1)) return wSoureLength;

	//解开密码
	unsigned char szKeyBuffer[3];
	for (int i=0;i<wSoureLength;i++)
	{
		szKeyBuffer[0]=pszEncrypData[i*4];
		szKeyBuffer[1]=pszEncrypData[i*4+1];
		szKeyBuffer[2]=0;
		szTempBuffer[0]=pszEncrypData[i*4+2];
		szTempBuffer[1]=pszEncrypData[i*4+3];
		szTempBuffer[2]=0;
		UINT uKey=strtol((LPCTSTR)szKeyBuffer,&pEnd,16);
		UINT uEncrypt=strtol(szTempBuffer,&pEnd,16);
		pszSrcData[i]=(TCHAR)((BYTE)uKey^(BYTE)uEncrypt);
	}
	pszSrcData[wSoureLength]=0;

	return wSoureLength;
}

//////////////////////////////////////////////////////////////////////////