VC++ 加密/解密

头文件申明（CEncrypt.h）：

#ifndef ENCRYPT_HEAD_FILE
#define ENCRYPT_HEAD_FILE#pragma once//宏定义
#define XOR_TIMES                   8                                   //加密倍数
#define MAX_SOURCE_LEN              64                                  //最大长度
#define MAX_ENCRYPT_LEN             (MAX_SOURCE_LEN*XOR_TIMES)          //最大长度
#define LEN_MD5                     33                                  //加密长度//加密组件
class CEncrypt
{//函数定义
public://构造函数CEncrypt();//析构函数virtual ~CEncrypt();//MD5加密函数
public://生成密文static bool MD5Encrypt(LPCTSTR pszSourceData, TCHAR szMD5Result[LEN_MD5]);//异或加密函数
public://生成密文static bool XorEncrypt(LPCTSTR pszSourceData, LPTSTR pszEncrypData, WORD wMaxCount);//解开密文static bool XorDecrypt(LPCTSTR pszEncrypData, LPTSTR pszSourceData, WORD wMaxCount);//密码本加密函数
public://生成密文static bool MapEncrypt(LPCTSTR pszSourceData, LPTSTR pszEncrypData, WORD wMaxCount);//解开密文static bool MapDecrypt(LPCTSTR pszEncrypData, LPTSTR pszSourceData, WORD wMaxCount);//des加密函数
public://des加密static bool DesEncrypt(LPCTSTR pszSourceData,LPTSTR pszEncrypData);//des解密static bool DesDecrypt(LPCTSTR pszEncrypData,LPTSTR pszSourceData);
};#endif

源码实现（CEncrypt.cpp）：

#include "StdAfx.h"
#include "CEncrypt.h"
#include "CDESEncrypt.h"
#include "CMD5Encrypt.h"//加密映射
const BYTE g_cbEncryptMap[256]=
{0x70,0x2F,0x40,0x5F,0x44,0x8E,0x6E,0x45,0x7E,0xAB,0x2C,0x1F,0xB4,0xAC,0x9D,0x91,0x0D,0x36,0x9B,0x0B,0xD4,0xC4,0x39,0x74,0xBF,0x23,0x16,0x14,0x06,0xEB,0x04,0x3E,0x12,0x5C,0x8B,0xBC,0x61,0x63,0xF6,0xA5,0xE1,0x65,0xD8,0xF5,0x5A,0x07,0xF0,0x13,0xF2,0x20,0x6B,0x4A,0x24,0x59,0x89,0x64,0xD7,0x42,0x6A,0x5E,0x3D,0x0A,0x77,0xE0,0x80,0x27,0xB8,0xC5,0x8C,0x0E,0xFA,0x8A,0xD5,0x29,0x56,0x57,0x6C,0x53,0x67,0x41,0xE8,0x00,0x1A,0xCE,0x86,0x83,0xB0,0x22,0x28,0x4D,0x3F,0x26,0x46,0x4F,0x6F,0x2B,0x72,0x3A,0xF1,0x8D,0x97,0x95,0x49,0x84,0xE5,0xE3,0x79,0x8F,0x51,0x10,0xA8,0x82,0xC6,0xDD,0xFF,0xFC,0xE4,0xCF,0xB3,0x09,0x5D,0xEA,0x9C,0x34,0xF9,0x17,0x9F,0xDA,0x87,0xF8,0x15,0x05,0x3C,0xD3,0xA4,0x85,0x2E,0xFB,0xEE,0x47,0x3B,0xEF,0x37,0x7F,0x93,0xAF,0x69,0x0C,0x71,0x31,0xDE,0x21,0x75,0xA0,0xAA,0xBA,0x7C,0x38,0x02,0xB7,0x81,0x01,0xFD,0xE7,0x1D,0xCC,0xCD,0xBD,0x1B,0x7A,0x2A,0xAD,0x66,0xBE,0x55,0x33,0x03,0xDB,0x88,0xB2,0x1E,0x4E,0xB9,0xE6,0xC2,0xF7,0xCB,0x7D,0xC9,0x62,0xC3,0xA6,0xDC,0xA7,0x50,0xB5,0x4B,0x94,0xC0,0x92,0x4C,0x11,0x5B,0x78,0xD9,0xB1,0xED,0x19,0xE9,0xA1,0x1C,0xB6,0x32,0x99,0xA3,0x76,0x9E,0x7B,0x6D,0x9A,0x30,0xD6,0xA9,0x25,0xC7,0xAE,0x96,0x35,0xD0,0xBB,0xD2,0xC8,0xA2,0x08,0xF3,0xD1,0x73,0xF4,0x48,0x2D,0x90,0xCA,0xE2,0x58,0xC1,0x18,0x52,0xFE,0xDF,0x68,0x98,0x54,0xEC,0x60,0x43,0x0F
};//解密映射
const BYTE g_cbDecryptMap[256]=
{0x51,0xA1,0x9E,0xB0,0x1E,0x83,0x1C,0x2D,0xE9,0x77,0x3D,0x13,0x93,0x10,0x45,0xFF,0x6D,0xC9,0x20,0x2F,0x1B,0x82,0x1A,0x7D,0xF5,0xCF,0x52,0xA8,0xD2,0xA4,0xB4,0x0B,0x31,0x97,0x57,0x19,0x34,0xDF,0x5B,0x41,0x58,0x49,0xAA,0x5F,0x0A,0xEF,0x88,0x01,0xDC,0x95,0xD4,0xAF,0x7B,0xE3,0x11,0x8E,0x9D,0x16,0x61,0x8C,0x84,0x3C,0x1F,0x5A,0x02,0x4F,0x39,0xFE,0x04,0x07,0x5C,0x8B,0xEE,0x66,0x33,0xC4,0xC8,0x59,0xB5,0x5D,0xC2,0x6C,0xF6,0x4D,0xFB,0xAE,0x4A,0x4B,0xF3,0x35,0x2C,0xCA,0x21,0x78,0x3B,0x03,0xFD,0x24,0xBD,0x25,0x37,0x29,0xAC,0x4E,0xF9,0x92,0x3A,0x32,0x4C,0xDA,0x06,0x5E,0x00,0x94,0x60,0xEC,0x17,0x98,0xD7,0x3E,0xCB,0x6A,0xA9,0xD9,0x9C,0xBB,0x08,0x8F,0x40,0xA0,0x6F,0x55,0x67,0x87,0x54,0x80,0xB2,0x36,0x47,0x22,0x44,0x63,0x05,0x6B,0xF0,0x0F,0xC7,0x90,0xC5,0x65,0xE2,0x64,0xFA,0xD5,0xDB,0x12,0x7A,0x0E,0xD8,0x7E,0x99,0xD1,0xE8,0xD6,0x86,0x27,0xBF,0xC1,0x6E,0xDE,0x9A,0x09,0x0D,0xAB,0xE1,0x91,0x56,0xCD,0xB3,0x76,0x0C,0xC3,0xD3,0x9F,0x42,0xB6,0x9B,0xE5,0x23,0xA7,0xAD,0x18,0xC6,0xF4,0xB8,0xBE,0x15,0x43,0x70,0xE0,0xE7,0xBC,0xF1,0xBA,0xA5,0xA6,0x53,0x75,0xE4,0xEB,0xE6,0x85,0x14,0x48,0xDD,0x38,0x2A,0xCC,0x7F,0xB1,0xC0,0x71,0x96,0xF8,0x3F,0x28,0xF2,0x69,0x74,0x68,0xB7,0xA3,0x50,0xD0,0x79,0x1D,0xFC,0xCE,0x8A,0x8D,0x2E,0x62,0x30,0xEA,0xED,0x2B,0x26,0xB9,0x81,0x7C,0x46,0x89,0x73,0xA2,0xF7,0x72
};//构造函数
CEncrypt::CEncrypt()
{
}//析构函数
CEncrypt::~CEncrypt()
{
}//生成密文
bool CEncrypt::MD5Encrypt(LPCTSTR pszSourceData, TCHAR szMD5Result[LEN_MD5])
{//变量定义CMD5Encrypt MD5Encrypt;UCHAR szResult[16];CT2CA strSrcData(pszSourceData);//加密密文MD5Encrypt.MD5Update((BYTE *)((LPCSTR)strSrcData),lstrlenA(strSrcData)*sizeof(CHAR));MD5Encrypt.MD5Final(szResult);//输出结果szMD5Result[0]=0;for (INT i=0;i<16;i++) _stprintf(&szMD5Result[i*2],TEXT("%02X"),szResult[i]);return true;
}//生成密文
bool CEncrypt::XorEncrypt(LPCTSTR pszSourceData, LPTSTR pszEncrypData, WORD wMaxCount)
{//变量定义CT2CW strSrcData(pszSourceData);WCHAR szEncrypData[MAX_ENCRYPT_LEN+1]=L"";//生成密钥WORD wRandKey[ENCRYPT_KEY_LEN];wRandKey[0]=lstrlenW(strSrcData);for (WORD i=1;i<CountArray(wRandKey);i++) wRandKey[i]=rand()%0xFFFF;//步骤准备WORD wTempCode=0;WORD wTimes=((wRandKey[0]+ENCRYPT_KEY_LEN-1)/ENCRYPT_KEY_LEN)*ENCRYPT_KEY_LEN;//参数效验ASSERT((wTimes*8+1)<=wMaxCount);if ((wTimes*8+1)>wMaxCount) return false;//生成密文for (WORD i=0;i<wTimes;i++){if (i<wRandKey[0]) wTempCode=strSrcData[i]^wRandKey[i%ENCRYPT_KEY_LEN];else wTempCode=wRandKey[i%ENCRYPT_KEY_LEN]^(WORD)(rand()%0xFFFF);swprintf(szEncrypData+i*8,L"%04X%04X",wRandKey[i%ENCRYPT_KEY_LEN],wTempCode);}//字符转换CW2CT strEncrypData(szEncrypData);lstrcpyn(pszEncrypData,strEncrypData,wMaxCount);return true;
}//解开密文
bool CEncrypt::XorDecrypt(LPCTSTR pszEncrypData, LPTSTR pszSourceData, WORD wMaxCount)
{//设置结果pszSourceData[0]=0;//变量定义CT2CW strEncrypData(pszEncrypData);WCHAR szSrcData[MAX_SOURCE_LEN]=L"";//效验长度WORD wEncrypPassLen=lstrlenW(strEncrypData);if (wEncrypPassLen<ENCRYPT_KEY_LEN*8) return false;//提取长度WCHAR szTempBuffer[5]=L"";szTempBuffer[CountArray(szTempBuffer)-1]=0;CopyMemory(szTempBuffer,(LPCWSTR)strEncrypData,sizeof(WCHAR)*4);//获取长度WCHAR * pEnd=NULL;WORD wSoureLength=(WORD)wcstol(szTempBuffer,&pEnd,16);//长度效验ASSERT(wEncrypPassLen==(((wSoureLength+ENCRYPT_KEY_LEN-1)/ENCRYPT_KEY_LEN)*ENCRYPT_KEY_LEN*8));if (wEncrypPassLen!=(((wSoureLength+ENCRYPT_KEY_LEN-1)/ENCRYPT_KEY_LEN)*ENCRYPT_KEY_LEN*8)) return false;//长度效验ASSERT((wSoureLength+1)<=wMaxCount);if ((wSoureLength+1)>wMaxCount) return false;//解开密码for (INT i=0;i<wSoureLength;i++){//获取密钥WCHAR szKeyBuffer[5];szKeyBuffer[CountArray(szKeyBuffer)-1]=0;szTempBuffer[CountArray(szTempBuffer)-1]=0;CopyMemory(szKeyBuffer,(LPCWSTR)(strEncrypData+i*8),sizeof(WCHAR)*4);CopyMemory(szTempBuffer,(LPCWSTR)strEncrypData+i*8+4,sizeof(WCHAR)*4);//提取密钥WCHAR wKey=(WCHAR)wcstol(szKeyBuffer,&pEnd,16);WCHAR wEncrypt=(WCHAR)wcstol(szTempBuffer,&pEnd,16);//生成原文szSrcData[i]=(WCHAR)((WCHAR)wKey^(WCHAR)wEncrypt);}//终止字符szSrcData[wSoureLength]=0;//字符转换CW2CT strSrcData(szSrcData);lstrcpyn(pszSourceData,strSrcData,wMaxCount);return true;
}//生成密文
bool CEncrypt::MapEncrypt(LPCTSTR pszSourceData, LPTSTR pszEncrypData, WORD wMaxCount)
{//效验参数ASSERT(wMaxCount>lstrlen(pszEncrypData));ASSERT((pszEncrypData!=NULL)&&(pszSourceData!=NULL));//变量定义INT nLength=lstrlen(pszSourceData);BYTE * pcbEncrypData=(BYTE *)pszEncrypData;BYTE * pcbSourceData=(BYTE *)pszSourceData;//解密数据for (UINT i=0;i<nLength*sizeof(TCHAR);i++){BYTE cbIndex=pcbSourceData[i];pcbEncrypData[i]=g_cbEncryptMap[cbIndex];}//设置结果pszEncrypData[nLength]=0;return true;
}//解开密文
bool CEncrypt::MapDecrypt(LPCTSTR pszEncrypData, LPTSTR pszSourceData, WORD wMaxCount)
{//效验参数ASSERT(wMaxCount>lstrlen(pszEncrypData));ASSERT((pszEncrypData!=NULL)&&(pszSourceData!=NULL));//变量定义INT nLength=lstrlen(pszEncrypData);BYTE * pcbEncrypData=(BYTE *)pszEncrypData;BYTE * pcbSourceData=(BYTE *)pszSourceData;//解密数据for (UINT i=0;i<nLength*sizeof(TCHAR);i++){BYTE cbIndex=pcbEncrypData[i];pcbSourceData[i]=g_cbDecryptMap[cbIndex];}//设置结果pszSourceData[nLength]=0;return true;
}//des加密
bool CEncrypt::DesEncrypt(LPCTSTR pszSourceData,LPTSTR pszEncrypData)
{return true;
}//des解密
bool CEncrypt::DesDecrypt(LPCTSTR pszEncrypData,LPTSTR pszSourceData)
{ASSERT((pszEncrypData!=NULL)&&(pszSourceData!=NULL));CDESEncrypt des;des.InitializeKey("22waWA!@");CT2CA strEncrypData(pszEncrypData);des.DecryptAnyLength((char*)strEncrypData);char * szR = des.GetPlaintextAnyLength();USES_CONVERSION;lstrcpyn(pszSourceData,A2T(szR),MAX_PATH);return true;
}

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