这个小程序是用来作为一个非常简单的对称加密算法，比移位加密稍微强那么一点点。
seed的话大家可以自己来设置，seed大概为60位，程序没有边界检查，很简陋，希望看官们别见笑。
// Code.h: interface for the CCode class. // ////////////////////////////////////////////////////////////////////// #if !defined(AFX_CODE_H__D5B90563_053E_4256_A61D_7D56F8FB20CF__INCLUDED_) #define AFX_CODE_H__D5B90563_053E_4256_A61D_7D56F8FB20CF__INCLUDED_ #if _MSC_VER > 1000 #pragma once #endif // _MSC_VER > 1000 class CCode { public: CString Decode(CString strCode); CString Encode(CString strCode); CCode(); virtual ~CCode(); private: CString EnDeCode(CString strCode); int iLength; char* szSeed2; }; #endif // !defined(AFX_CODE_H__D5B90563_053E_4256_A61D_7D56F8FB20CF__INCLUDED_)// Code.cpp: implementation of the CCode class. // ////////////////////////////////////////////////////////////////////// #include "stdafx.h" #include "DecodeEncode.h" #include "Code.h" #ifdef _DEBUG #undef THIS_FILE static char THIS_FILE[]=__FILE__; #define new DEBUG_NEW #endif ////////////////////////////////////////////////////////////////////// // Construction/Destruction ////////////////////////////////////////////////////////////////////// CCode::CCode() { iLength = 0; char strTemp[60] ={0x04,0x02,0x06,0x05,0x01,0x09,0x03,0x07,0x08,0x02, 0x04,0x02,0x06,0x05,0x01,0x09,0x03,0x07,0x08,0x02, 0x04,0x02,0x06,0x05,0x01,0x09,0x03,0x07,0x08,0x02, 0x04,0x02,0x06,0x05,0x01,0x09,0x03,0x07,0x08,0x02, 0x04,0x02,0x06,0x05,0x01,0x09,0x03,0x07,0x08,0x02, 0x04,0x02,0x06,0x05,0x01,0x09,0x03,0x07,0x08,0x02}; szSeed2 = new char[60]; memcpy(szSeed2,strTemp,60); } CCode::~CCode() { delete[] szSeed2; } CString CCode::Encode(CString strCode) { return EnDeCode(strCode); } CString CCode::Decode(CString strCode) { return EnDeCode(strCode); } CString CCode::EnDeCode( CString strCode ) { LPCTSTR szSource = (LPCTSTR) strCode; iLength = strCode.GetLength(); char *szSeed = new char[iLength]; memcpy(szSeed,szSeed2,iLength); char * szSr = new char[iLength]; char *szDes = new char[iLength + 1]; memcpy(szSr,szSource,iLength); for(int i = 0;i < iLength;i++) { szDes[i] = szSr[i] ^szSeed[i] ; } szDes[iLength] = ' '; CString strTemp(szDes); delete[] szSr; delete[] szDes; delete[] szSeed; return strTemp; }整个程序使用起来很简单，就是调用一下加密解密就行了。
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