?? encrypt.cpp
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// ***************************************************************
// ComService version: 1.0
// -------------------------------------------------------------
// File Name: Encrypt.cpp
// Created: 2007/07/23
// Modified: 2007/07/23 15:12
// Author:
// Msn:
// Email:
// Description:提供了MD5加密方式及一組異或加/解函數(shù)，框架內(nèi)的所
// 加/密均基于以上兩種方法。
//
// Purpose:
// -------------------------------------------------------------
// license:
//
// The contents of this file are subject to the Mozilla Public
// License Version 1.1 (the "License"); you may not use this file
// except in compliance with the License. You may obtain a copy
// of the License at http://www.mozilla.org/MPL/ Software dis-
// tributed under the License is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or im-
// plied. See the License for the specific language governing
// rights and limitations under the License.
//
// The Initial Developer of the Original Code is William.Liang .
// Copyright (C) 2007 - All Rights Reserved.
// ***************************************************************
#include "StdAfx.h"
#include "Encrypt.h"
//數(shù)據(jù)大小
#define ENCRYPT_KEY_LEN 5 //密鑰長(zhǎng)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 加密類(lèi)
class CMD5
{
//變量定義
private:
unsigned long int state[4];
unsigned long int count[2];
unsigned char buffer[64];
unsigned char PADDING[64];
//函數(shù)定義
public:
//構(gòu)造函數(shù)
CMD5() { MD5Init(); }
//功能函數(shù)
public:
//最終結(jié)果
void MD5Final(unsigned char digest[16]);
//設(shè)置數(shù)值
void MD5Update(unsigned char * input, unsigned int inputLen);
//內(nèi)部函數(shù)
private:
//初始化
void MD5Init();
//置位函數(shù)
void MD5_memset(unsigned char * output, int value, unsigned int len);
//拷貝函數(shù)
void MD5_memcpy(unsigned char * output, unsigned char * input, unsigned int len);
//轉(zhuǎn)換函數(shù)
void MD5Transform(unsigned long int state[4], unsigned char block[64]);
//編碼函數(shù)
void Encode(unsigned char * output, unsigned long int * input, unsigned int len);
//解碼函數(shù)
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;
}
//更新函數(shù)
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;
}
//最終結(jié)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;
}
//轉(zhuǎn)換函數(shù)
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;
}
//編碼函數(shù)
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;
}
//解碼函數(shù)
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;
}
//拷貝函數(shù)
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];
}
//置位函數(shù)
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);
//輸出結(jié)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)
{
//效驗(yàn)參數(shù)
_ASSERT(wSize>0);
_ASSERT(pszSrcData!=NULL);
_ASSERT(pszEncrypData!=NULL);
//初始化參數(shù)
pszEncrypData[0]=0;
//生成密鑰
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;
}
//解開(kāi)密文
WORD CXOREncrypt::CrevasseData(LPCTSTR pszEncrypData, LPTSTR pszSrcData, WORD wSize)
{
//效驗(yàn)參數(shù)
_ASSERT(wSize>0);
_ASSERT(pszSrcData!=NULL);
_ASSERT(pszEncrypData!=NULL);
//初始化參數(shù)
pszSrcData[0]=0;
//效驗(yàn)長(zhǎng)度
WORD wEncrypPassLen=lstrlen(pszEncrypData);
if (wEncrypPassLen<ENCRYPT_KEY_LEN*4) return 0;
//效驗(yàn)長(zhǎng)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;
//解開(kāi)密碼
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;
}
//////////////////////////////////////////////////////////////////////////
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