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VC实现数据的加密和解密

由于生产实习的时间有限，加上自己这段时间致力于考研，因此，仅仅是实现了通过MD5/DES/RSA的简单的字符串的加密解密，希望有兴趣的兄弟姐妹能够完善它。

主要的程序如下：

1)、MD5

// MD5.h: interface for the CMD5 class.

////

#if !defined(AFX_MD5_H__EA6A200B_1336_43F3_B866_2A2E28D54560__INCLUDED_)

#define AFX_MD5_H__EA6A200B_1336_43F3_B866_2A2E28D54560__INCLUDED_

#if _MSC_VER > 1000

#pragma once#endif // _MSC_VER > 1000

//测试判别:摘自

/*MD5 ("") = d41d8cd98f00b204e9800998ecf8427eMD5 ("a") = 0cc175b9c0f1b6a831c399e269772661MD5 ("abc") = 900150983cd24fb0d6963f7d28e17f72MD5 ("message digest") = f96b697d7cb7938d525a2f31aaf161d0MD5 ("abcdefghijklmnopqrstuvwxyz") = c3fcd3d76192e4007dfb496cca67e13bMD5 ("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789") =d174ab98d277d9f5a5611c2c9f419d9fMD5 ("12345678901234567890123456789012345678901234567890123456789012345678901234567890") = 57edf4a22be3c955ac49da2e2107b67a*///补充MD5算法是不可逆的算法,也就是说不存在解密,惟有暴力解密才可以解密。 该算法主要是对摘要进行加密//主要是用于用户口令的加密,例如:UNIX里面用户口令保存都是也MD5加密后进行存储,当用户登录时,首先要对输//入的口令进行MD5进行加密,然后再和存储的MD5加密用户口令进行比较#include <string>using namespace std;

class CMD5

{ public: //CONSTRUCTOR CMD5(); //对基类的虚函数进行实现 void AddData(char const* pcData, int iDataLength); void FinalDigest(char* pcDigest); void Reset(); void DigestFile(string const& readFile, char* pcDigest); virtual ~CMD5();protected: //设置附上64位的消息长度 enum { BLOCKSIZE=64 }; BOOL m_bAddData;private:  //总共要经过4轮变换 enum { MD128LENGTH=4 }; //设定每次读取文件长度长度为1024位,数据长度为384(可以i自己设定) enum { DATA_LEN=384, BUFF_LEN=1024 }; //四个32-位的变量,数值必须为正整数,就是A,B,C,D unsigned int m_auiBuf[4]; unsigned int m_auiBits[2]; //获取M0-〉M64消息的64个子分组  unsigned char m_aucIn[64];

 //主循环要经过四轮变换，第一轮要经过16次操作，都是由下面的基本运算组成

 static unsigned int F(unsigned int x, unsigned int y, unsigned int z); static unsigned int G(unsigned int x, unsigned int y, unsigned int z); static unsigned int H(unsigned int x, unsigned int y, unsigned int z); static unsigned int I(unsigned int x, unsigned int y, unsigned int z);

 //对FF,GG,HH,II函数进行定义

 //具体的参数说明:第一个参数为:F1、F2、F3、F4方法的选择，第二个参数为:运算的结果,即初始化的参数 //第三、四、五个参数为初始化的参数,具体为a,b,c,d中的不同的三个,第六个参数为:消息的第J个子分组,第七个参数为循环左移S位 static void MD5STEP(unsigned int (*f)(unsigned int x, unsigned int y, unsigned int z),  unsigned int& w, unsigned int x, unsigned int y, unsigned int z, unsigned int data, unsigned int s); //MD5四轮变换算法，具体是对四轮中的每一轮进行16次运算 void MD5Transform();};//具体的函数可以参考 MD5 Message-Digest Algorithm(MD5摘要加密算法)//第一个非线性函数，即所谓的F函数:F(X,Y,Z) = (X&Y)|((~X)&Z)inline unsigned int CMD5::F(unsigned int x, unsigned int y, unsigned int z){  return (x & y | ~x & z);}//第二个非线性函数，即所谓的G函数:G(X,Y,Z) = (X&Z)|(Y&(~Z))inline unsigned int CMD5::G(unsigned int x, unsigned int y, unsigned int z){  return F(z, x, y);}//第三个非线性函数，即所谓的H函数:H(X,Y,Z) = X XOR Y XOR Zinline unsigned int CMD5::H(unsigned int x, unsigned int y, unsigned int z){  return x ^ y ^ z;} //第四个非线性函数，即所谓的I函数:I(X,Y,Z) = Y XOR (X | (~Z))inline unsigned int CMD5::I(unsigned int x, unsigned int y, unsigned int z){  return (y ^ (x | ~z));}//inline void CMD5::MD5STEP(unsigned int (*f)(unsigned int x, unsigned int y, unsigned int z), unsigned int& w, unsigned int x, unsigned int y, unsigned int z, unsigned int data, unsigned int s){  w += f(x, y, z) + data; w = w << s | w >> (32-s); w += x;}#endif // !defined(AFX_MD5_H__EA6A200B_1336_43F3_B866_2A2E28D54560__INCLUDED_)// MD5.cpp: implementation of the CMD5 class.////

#include "stdafx.h"

#include "EncryAndDecrypt.h"#include "MD5.h"#include "FileBuffer.h"#include <fstream>#include <strstream>

#ifdef _DEBUG

#undef THIS_FILEstatic char THIS_FILE[]=__FILE__;#define new DEBUG_NEW#endif

//

// Construction/Destruction////初始化变量值CMD5::CMD5():m_bAddData(false){  //对四个32位的变量进行初始化 m_auiBuf[0] = 0x67452301; m_auiBuf[1] = 0xefcdab89; m_auiBuf[2] = 0x98badcfe; m_auiBuf[3] = 0x10325476; m_auiBits[0] = 0; m_auiBits[1] = 0;}

CMD5::~CMD5()

{ }void CMD5::AddData(char const* pcData, int iDataLength){  if(iDataLength < 0)  AfxMessageBox("MD5文件加密失败!,数据的长度必须大于0"); unsigned int uiT; //更新位长度 uiT = m_auiBits[0]; //参考MD5Update函数 if((m_auiBits[0] = uiT + ((unsigned int)iDataLength << 3)) < uiT)  m_auiBits[1]++;  m_auiBits[1] += iDataLength >> 29; uiT = (uiT >> 3) & (BLOCKSIZE-1); //转化为字节 //处理奇数块 if(uiT != 0) {   unsigned char *puc = (unsigned char *)m_aucIn + uiT;  uiT = BLOCKSIZE - uiT;  if(iDataLength < uiT)  {    memcpy(puc, pcData, iDataLength);   return;  }  memcpy(puc, pcData, uiT);  MD5Transform();  pcData += uiT;  iDataLength -= uiT; } //处理长度为64字节数据块 while(iDataLength >= BLOCKSIZE) {   memcpy(m_aucIn, pcData, BLOCKSIZE);  MD5Transform();  pcData += BLOCKSIZE;  iDataLength -= BLOCKSIZE; } //处理余下的数据 memcpy(m_aucIn, pcData, iDataLength); //设置标志位 m_bAddData = true;}void CMD5::FinalDigest(char* pcDigest){  if(m_bAddData == false)  AfxMessageBox("MD5文件加密失败!,没有数据被添加"); unsigned int uiCount; unsigned char* puc; //参考MD5Update函数 //计算字节对64取余运算 uiCount = (m_auiBits[0] >> 3) & (BLOCKSIZE-1); //参考static unsigned char PADDING[64]~~即对对一个填充位设置为0x80 puc = m_aucIn + uiCount; *puc++ = 0x80; //同时要通过填充来达到64个字节 uiCount = BLOCKSIZE - uiCount - 1; //填充到64位长度 //假如填充的长度未达到64位长度 if(uiCount < 8) {   //首先要填充前面64个字节  memset(puc, 0, uiCount);  MD5Transform();  //然后要填充后面的56个字节  memset(m_aucIn, 0, BLOCKSIZE-8); } //已经达到64位 else {   //直接填充56个字节  memset(puc, 0, uiCount - 8); } //添加位长度同时进行MD5变换 ((unsigned int*)m_aucIn)[(BLOCKSIZE>>2)-2] = m_auiBits[0]; ((unsigned int*)m_aucIn)[(BLOCKSIZE>>2)-1] = m_auiBits[1]; MD5Transform(); memcpy(pcDigest, m_auiBuf, MD128LENGTH<<2); //重新设置大小 Reset();}void CMD5::Reset(){  //对四个32位的变量重新设置 m_auiBuf[0] = 0x67452301; m_auiBuf[1] = 0xefcdab89; m_auiBuf[2] = 0x98badcfe; m_auiBuf[3] = 0x10325476; m_auiBits[0] = 0; m_auiBits[1] = 0; //重设标志 m_bAddData = false;}

//MD5四轮变换算法,具体的64次运算过程如下

void CMD5::MD5Transform(){  unsigned int* puiIn = (unsigned int*)m_aucIn; register unsigned int a, b, c, d; a = m_auiBuf[0]; b = m_auiBuf[1]; c = m_auiBuf[2]; d = m_auiBuf[3]; //第一轮 MD5STEP(F, a, b, c, d, puiIn[0] + 0xd76aa478, 7); MD5STEP(F, d, a, b, c, puiIn[1] + 0xe8c7b756, 12); MD5STEP(F, c, d, a, b, puiIn[2] + 0x242070db, 17); MD5STEP(F, b, c, d, a, puiIn[3] + 0xc1bdceee, 22); MD5STEP(F, a, b, c, d, puiIn[4] + 0xf57c0faf, 7); MD5STEP(F, d, a, b, c, puiIn[5] + 0x4787c62a, 12); MD5STEP(F, c, d, a, b, puiIn[6] + 0xa8304613, 17); MD5STEP(F, b, c, d, a, puiIn[7] + 0xfd469501, 22); MD5STEP(F, a, b, c, d, puiIn[8] + 0x698098d8, 7); MD5STEP(F, d, a, b, c, puiIn[9] + 0x8b44f7af, 12); MD5STEP(F, c, d, a, b, puiIn[10] + 0xffff5bb1, 17); MD5STEP(F, b, c, d, a, puiIn[11] + 0x895cd7be, 22); MD5STEP(F, a, b, c, d, puiIn[12] + 0x6b901122, 7); MD5STEP(F, d, a, b, c, puiIn[13] + 0xfd987193, 12); MD5STEP(F, c, d, a, b, puiIn[14] + 0xa679438e, 17); MD5STEP(F, b, c, d, a, puiIn[15] + 0x49b40821, 22); //第二轮 MD5STEP(G, a, b, c, d, puiIn[1] + 0xf61e2562, 5); MD5STEP(G, d, a, b, c, puiIn[6] + 0xc040b340, 9); MD5STEP(G, c, d, a, b, puiIn[11] + 0x265e5a51, 14); MD5STEP(G, b, c, d, a, puiIn[0] + 0xe9b6c7aa, 20); MD5STEP(G, a, b, c, d, puiIn[5] + 0xd62f105d, 5); MD5STEP(G, d, a, b, c, puiIn[10] + 0x02441453, 9); MD5STEP(G, c, d, a, b, puiIn[15] + 0xd8a1e681, 14); MD5STEP(G, b, c, d, a, puiIn[4] + 0xe7d3fbc8, 20); MD5STEP(G, a, b, c, d, puiIn[9] + 0x21e1cde6, 5); MD5STEP(G, d, a, b, c, puiIn[14] + 0xc33707d6, 9); MD5STEP(G, c, d, a, b, puiIn[3] + 0xf4d50d87, 14); MD5STEP(G, b, c, d, a, puiIn[8] + 0x455a14ed, 20); MD5STEP(G, a, b, c, d, puiIn[13] + 0xa9e3e905, 5); MD5STEP(G, d, a, b, c, puiIn[2] + 0xfcefa3f8, 9); MD5STEP(G, c, d, a, b, puiIn[7] + 0x676f02d9, 14); MD5STEP(G, b, c, d, a, puiIn[12] + 0x8d2a4c8a, 20); //第三轮 MD5STEP(H, a, b, c, d, puiIn[5] + 0xfffa3942, 4); MD5STEP(H, d, a, b, c, puiIn[8] + 0x8771f681, 11); MD5STEP(H, c, d, a, b, puiIn[11] + 0x6d9d6122, 16); MD5STEP(H, b, c, d, a, puiIn[14] + 0xfde5380c, 23); MD5STEP(H, a, b, c, d, puiIn[1] + 0xa4beea44, 4); MD5STEP(H, d, a, b, c, puiIn[4] + 0x4bdecfa9, 11); MD5STEP(H, c, d, a, b, puiIn[7] + 0xf6bb4b60, 16); MD5STEP(H, b, c, d, a, puiIn[10] + 0xbebfbc70, 23); MD5STEP(H, a, b, c, d, puiIn[13] + 0x289b7ec6, 4); MD5STEP(H, d, a, b, c, puiIn[0] + 0xeaa127fa, 11); MD5STEP(H, c, d, a, b, puiIn[3] + 0xd4ef3085, 16); MD5STEP(H, b, c, d, a, puiIn[6] + 0x04881d05, 23); MD5STEP(H, a, b, c, d, puiIn[9] + 0xd9d4d039, 4); MD5STEP(H, d, a, b, c, puiIn[12] + 0xe6db99e5, 11); MD5STEP(H, c, d, a, b, puiIn[15] + 0x1fa27cf8, 16); MD5STEP(H, b, c, d, a, puiIn[2] + 0xc4ac5665, 23); //第四轮 MD5STEP(I, a, b, c, d, puiIn[0] + 0xf4292244, 6); MD5STEP(I, d, a, b, c, puiIn[7] + 0x432aff97, 10); MD5STEP(I, c, d, a, b, puiIn[14] + 0xab9423a7, 15); MD5STEP(I, b, c, d, a, puiIn[5] + 0xfc93a039, 21); MD5STEP(I, a, b, c, d, puiIn[12] + 0x655b59c3, 6); MD5STEP(I, d, a, b, c, puiIn[3] + 0x8f0ccc92, 10); MD5STEP(I, c, d, a, b, puiIn[10] + 0xffeff47d, 15); MD5STEP(I, b, c, d, a, puiIn[1] + 0x85845dd1, 21); MD5STEP(I, a, b, c, d, puiIn[8] + 0x6fa87e4f, 6); MD5STEP(I, d, a, b, c, puiIn[15] + 0xfe2ce6e0, 10); MD5STEP(I, c, d, a, b, puiIn[6] + 0xa3014314, 15); MD5STEP(I, b, c, d, a, puiIn[13] + 0x4e0811a1, 21); MD5STEP(I, a, b, c, d, puiIn[4] + 0xf7537e82, 6); MD5STEP(I, d, a, b, c, puiIn[11] + 0xbd3af235, 10); MD5STEP(I, c, d, a, b, puiIn[2] + 0x2ad7d2bb, 15); MD5STEP(I, b, c, d, a, puiIn[9] + 0xeb86d391, 21); //将ABCD分别加上abcd, m_auiBuf[0] += a; m_auiBuf[1] += b; m_auiBuf[2] += c; m_auiBuf[3] += d;}

void CMD5::DigestFile(string const& readFile, char* pcDigest)

{  //以二进制的形式打开文件中的内容 ifstream Readin(readFile.c_str(), ios::binary); if(!Readin)//打开失败 {   ostrstream ostr;  ostr<<"打开加密文件失败!"<<endl; } //打开文件成功  Reset(); //开始读取文件 char szLargeBuff[BUFF_LEN+1] = {0}; char szBuff[DATA_LEN+1] = {0}; //开始读取数据 CFileBuffer fileRead(Readin, szLargeBuff, BUFF_LEN, DATA_LEN); int iRead; //一直读取数据 while((iRead = fileRead.GetData(szBuff)) > 0)  AddData(szBuff, iRead); //关闭文件 Readin.close(); //对文件进行最后一步进行加密 FinalDigest(pcDigest);}2)、RSA:

// RSA.h: interface for the CRSA class.

////

#if !defined(AFX_RSA_H__A0CC2413_F410_45CE_911B_7A21D7A5155B__INCLUDED_)

#define AFX_RSA_H__A0CC2413_F410_45CE_911B_7A21D7A5155B__INCLUDED_

#if _MSC_VER > 1000

#pragma once#endif // _MSC_VER > 1000

class CEncryAndDecryptDlg;

class CRSA  { public: CString Encrypt(CString szMessage, int p, int q,int e); CString Decrypt(CString szMessage,int e,int n); int  GetSecretKey(int p, int q); CRSA(); virtual ~CRSA();private: BOOL IsPrime(int x); int  GetValues(int iMessage,int d,int n); //求模逆元运算 void ExtBinEuclid(int* u,int* v,int* u1,int* u2,int* u3);

};

#endif // !defined(AFX_RSA_H__A0CC2413_F410_45CE_911B_7A21D7A5155B__INCLUDED_)

// RSA.cpp: implementation of the CRSA class.////

#include "stdafx.h"

#include "EncryAndDecrypt.h"#include "RSA.h"#include <math.h>#include <string.h>#include "EncryAndDecryptDlg.h"

#ifdef _DEBUG

#undef THIS_FILEstatic char THIS_FILE[]=__FILE__;#define new DEBUG_NEW#endif//// Construction/Destruction//

#define isEven(x) ((x&0x01) == 0)

#define isOdd(x) (x&0x01)#define swap(x,y) (x ^= y,y ^= x,x ^= y)

CRSA::CRSA()

{

}

CRSA::~CRSA()

{

}

//对szMessage利用RSA算法进行测试

CString CRSA::Encrypt(CString szMessage, int p, int q,int e){  int t,d,n,iMessage,EncryValues,a,b,gcd; CString EncryMessage; n = p*q;//计算乘积 t = (p-1)*(q-1);//用于与私钥e互素,同时e的值要保存 ExtBinEuclid(&t,&e,&a,&b,&gcd);//获取公钥 if(gcd == 1)  d = t-b; //对信息进行加密 //将字符串信息进行数据类型转化  iMessage = atoi(szMessage.GetBuffer(szMessage.GetLength())); EncryValues = GetValues(iMessage,d,n); EncryMessage.Format(_T("%d"), EncryValues); return EncryMessage;}

CString CRSA::Decrypt(CString szMessage,int e,int n)

{  int EncryValues,iMessage; CString EncryMessage; iMessage = atoi(szMessage.GetBuffer(szMessage.GetLength())); EncryValues = GetValues(iMessage,e,n); EncryMessage.Format(_T("%d"), EncryValues); return EncryMessage;}

//获取与Itemp的素数

int CRSA::GetSecretKey(int p, int q){  int IResult,Itemp; Itemp = (p-1)*(q-1); for(IResult = (int)(0.2*Itemp);IResult < Itemp;IResult++)  if(IsPrime(IResult))   return IResult; return Itemp;}

//判别是否为素数

BOOL CRSA::IsPrime(int x){  int k; k = int(sqrt ( x )); for ( int i = 2; i <= k; i ++ ) {   if ( x % i == 0 )       break; } if ( i >= k + 1 )                return  TRUE; else  return  FALSE;}

/*

求高次模运算输入参数:u表示公开密钥,V为n*/int CRSA::GetValues(int iMessage,int d,int n){  int s,t,u; s = 1; t = iMessage; u = d; while(u) {   if(u&1)   s = (s*t)%n;  u>>=1;  t = (t*t)%n; } return s;}

/*

求模逆元运算---欧几里德拓展算法输入参数:u表示t,V为公开密钥*/void CRSA::ExtBinEuclid(int* u,int* v,int* u1,int* u2,int* u3){  int k,t1,t2,t3; if(* u < * v)  swap(* u,* v); for(k = 0;isEven(*u)&&isEven(*v);++k) {   *u >>= 1;  *v >>= 1; } *u1 = 1; *u2 = 0; *u3 = *u; t1 = *v; t2 = *u - 1; t3 = *v; do {   do  {    if(isEven(*u3))   {     if(isOdd(*u1) || isOdd(*u2))    {      *u1 += *v;     *u2 += *u;    }    *u1 >>= 1;    *u2 >>= 1;    *u3 >>= 1;   }   if(isEven(t3) || *u3 < t3)   {     swap(*u1,t1);    swap(*u2,t2);    swap(*u3,t3);   }  }while(isEven(*u3));  while(*u1 < t1 || *u2 < t2)  {    *u1 += *v;   *u2 += *u;  }  *u1 -= t1;  *u2 -= t2;  *u3 -= t3; }while(t3 > 0); while(*u1 >= *v && *u2 >= *u) {   *u1 -= *v;  *u2 -= *u; } *u1 <<= k; *u2 <<= k; *u3 <<= k;}

3)、DES

// DES.h: interface for the CDES class.

////

#if !defined(AFX_DES_H__20CE37EF_1AD4_43FD_A437_9FABCF07E121__INCLUDED_)

#define AFX_DES_H__20CE37EF_1AD4_43FD_A437_9FABCF07E121__INCLUDED_

#if _MSC_VER > 1000

#pragma once#endif // _MSC_VER > 1000class CDES  { public: CString Decrypt(); CString Encrypt(CString szMessage,CString szKey); CDES(); virtual ~CDES(); void Transform(int NumShift);//进行IP置换 private: int  oldMessage[64];//原来的64位明文 int  tempByte[8];//8位字节，也就是64位 int  Key[56];//56位密钥 int  subKey[48];//48位子密钥, 是从56位选出来的密钥

 int  L0[32],R0[32];//对明文进行左右平分

 int  LTemp[32],RTemp[32];//临时变量 int  KeyC0[28],KeyD0[28];//初始密钥

 int  RShift[48];//密钥移动的位数与Ki形成F函数

  int  S[8][6];//S盒 int  S0[8];//初始 int frk[32];//f函数的32位数与Ri做模2运算

 int stmp[8];//将S0存储S盒的值

 int item; bool isDecrypt;//是否为加密还是解密};

#endif // !defined(AFX_DES_H__20CE37EF_1AD4_43FD_A437_9FABCF07E121__INCLUDED_)

// DES.cpp: implementation of the CDES class.////

#include "stdafx.h"

#include "EncryAndDecrypt.h"#include "DES.h"#include "table.h"

#ifdef _DEBUG

#undef THIS_FILEstatic char THIS_FILE[]=__FILE__;#define new DEBUG_NEW#endif

//

// Construction/Destruction////默认的构造函数CDES::CDES(){  }

CDES::~CDES()

{

}

//每一轮的迭代

void CDES::Transform(int NumShift){  //生成子密钥ki int j=2; // 移位次数 if( NumShift==1||NumShift==2||NumShift==9||NumShift==16) {   j=1; } // //如果为解密，迭代移位的次序变换相反方向 if(isDecrypt) {   if(NumShift == 16)  {    j=0;  }  else if(NumShift ==15||NumShift ==8||NumShift==1)  {    j=-1;  }  else  {    j=-2;  } }  int Kctmp[28], Kdtmp[28]; //  C0, D0中间传递数据 memset(Kctmp, 0, 28); memset(Kdtmp, 0, 28); for(int i=0; i<28; i++) {   Kctmp[i]=KeyC0[(i+j+28)%28];  Kdtmp[i]=KeyD0[(i+j+28)%28]; }  // // 将KCTMP， KDTMP的数据存入KC，KD中去 for(i=0; i<28; i++) {   KeyC0[i]=Kctmp[i];  KeyD0[i]=Kdtmp[i]; }  // // 生成子密钥Ki,存储到数组k1[48]中去 int ktmp[56]; memset(ktmp, 0, 56); for(i=0; i<28; i++) {   ktmp[i]=KeyC0[i];  ktmp[i+28]=KeyD0[i]; }  memset(subKey, 0, 48); for(i=0; i<48; i++) {   subKey[i]=ktmp[PC2_Table[i]-1]; }  // //将Ri-1扩充成48位并与Ki相加并模2 memset(RShift, 0, 48); for(i=0; i<48; i++) {   RShift[i]=(R0[E_Table[i]-1]+subKey[i])%2; }  // //分成8组, 每组6位,有一个二维数组s[8][6]存储 for(i=0; i<6; i++) {   for(int j=0; j<8; j++)  {    S[j][i]=RShift[6*j+i];  } }  // //以下通过8个S盒得到8个S数并存到S[8]中S_Box[8][4][16]  memset(S0, 0, 8); for(i=0; i<8; i++) {   S0[i]=S_Box[i][S[i][5]+S[i][0]*2][S[i][1]*8+S[i][2]*4+S[i][3]*2+S[i][4]]; }  memset(stmp, 0, 8); memcpy(stmp, S0, sizeof(S0)); // // 将8个数分别转换成2进制，再存入到frk[32] int f[32]; memset(f, 0, 32); for(i=0; i<8; i++) {   int tmp[4];  memset(tmp, 0, 4);  for(int j=0; j<4; j++)  {    tmp[j]=S0[i]%2;   S0[i]/=2;  }  for(j=0; j<4; j++)  {    f[4*i+j]=tmp[3-j];  } }  // 经过P变换存入frk[32] for(i=0; i<32; i++) {   frk[i]=f[P_Table[i]-1]; }  int Ltmp[32], Rtmp[32]; memset(Ltmp, 0, 32); memset(Rtmp, 0, 32);  for(i=0; i<32; i++) {   Ltmp[i]=R0[i];  Rtmp[i]=(L0[i]+frk[i])%2; }  // 最后将数据存入L0，RO里面去 for(i=0; i<32; i++) {   L0[i]=Ltmp[i];  R0[i]=Rtmp[i]; }

}

CString CDES::Encrypt(CString szMessage,CString szKey){  //初始化数组元素清0 memset(L0, 0, 32);   memset(R0, 0, 32);  memset(subKey, 0, 48); memset(KeyC0, 0, 28);  memset(KeyD0, 0, 28);  memset(RShift, 0, 48); memset(oldMessage, 0, 64);  memset(S, 0, 48); // // 此处开始加密  // /// 此处对明文处理，将对应的ASCII码转化为二进制  int flag=true; for(int i=0; i<8; i++) {   //为szMessage输入的字符串   char ch = szMessage.GetAt(i);  if(ch&0x80&&flag)  {    AfxMessageBox("含有中文字符");   flag=false;  }  memset(tempByte, 0, 8);  for(int j=0; j<8; j++)  {    tempByte[j]=(ch%2+2)%2;   ch/=2;  }  for(j=7; j>=0; j--)  {    oldMessage[i*8+7-j]=tempByte[j];  }  }  for(i=0; i<32; i++) {   L0[i]=oldMessage[IP_Table[i]-1];   /// 获得L0共32位  R0[i]=oldMessage[IP_Table[i+32]-1];  /// 获得R0共32位 }  // /// 此处开始对C0,D0处理 for(i=0; i<8; i++) {   memset(tempByte, 0, 8);  //szKey为输入的密钥  char ch = szKey.GetAt(i);  if(ch&0x80)  {    AfxMessageBox("含有中文字符");   return "FALSESTRING";  }  for(int j=0; j<8; j++)  {    tempByte[j]=ch%2;   ch/=2;  }  for(j=7; j>=0; j--)  {    Key[i*8+7-j]=tempByte[j];  } }  for(i=0; i<28; i++) {   KeyC0[i]=Key[PC1_Table[i]-1];   /// 获得c0共28位  KeyD0[i]=Key[PC1_Table[i+28]-1];  /// 获得d0共28位 }  // /// 此处开始16迭代算法 isDecrypt=false; for(i=1; i<=16; i++) {   Transform(i); }

 //

 // 最后一次生成的L16与R16调换位置装入密文字符串里 int miwen[64]; memset(miwen, 0, 64); // 逆初始置换，真它MOTHER的麻烦! int mitmp[64]; memset(mitmp, 0, 64); for(i=0; i<32; i++)  {   mitmp[i]=R0[i];  mitmp[32+i]=L0[i];  //交换L0,R0的值  L0[i]=mitmp[i];  R0[i]=mitmp[i+32]; }

 for(i=0; i<64; i++) 

 {   miwen[i]=mitmp[IPR_Table[i]-1]; }  CString m_new="",str; for(i=0; i<8; i++) {   int tmp=0;  tmp+=miwen[8*i];  for(int j=1; j<8; j++)  {    tmp*=2;   tmp+=miwen[i*8+j];  }  str.Format("%c", tmp);  m_new+=str; } return m_new;}

//进行解密

CString CDES::Decrypt(){  //重新开始16次迭代算法 isDecrypt=true; int i; for(i=16; i>=1; i--) {   Transform(i); } // // 最后一次生成的L16<->R16调换位置 int minwen[64]; memset(minwen, 0, 64); // 逆初始置换 int mintmp[64]; memset(mintmp, 0, 64);

 for(i=0; i<32; i++) 

 {   mintmp[i]=R0[i];  mintmp[32+i]=L0[i]; }  for(i=0; i<64; i++)  {   minwen[i]=mintmp[IPR_Table[i]-1]; }

 //

 // 将密文ASCII码放入编辑框里面去 CString str,strResult = ""; for(i=0; i<8; i++) {   int tmp=0;  tmp+=minwen[8*i];  for(int j=1; j<8; j++)  {    tmp*=2;   tmp+=minwen[i*8+j];  }  //将整形变量转化为CString也可以使用itoa来解决  str.Format("%c", tmp);  strResult += str; } return  strResult;}4)、主要的窗体类：

// EncryAndDecryptDlg.h : header file

//

#if !defined(AFX_ENCRYANDDECRYPTDLG_H__DF1A4BD7_CD11_4F04_9D56_71AB1AA682C6__INCLUDED_)

#define AFX_ENCRYANDDECRYPTDLG_H__DF1A4BD7_CD11_4F04_9D56_71AB1AA682C6__INCLUDED_

#if _MSC_VER > 1000

#pragma once#endif // _MSC_VER > 1000

#include "TransparentBitmap.h"

#include "EditHex.h"#include "EditReadOnly.h"#include "EditSelect.h"#include "MD5.h"#include "DES.h"#include "Rsa.h"

/

// CEncryAndDecryptDlg dialog

class CEncryAndDecryptDlg : public CDialog

{ // Constructionpublic: CEncryAndDecryptDlg(CWnd* pParent = NULL); // standard constructor

// Dialog Data

 //{ {AFX_DATA(CEncryAndDecryptDlg) enum { IDD = IDD_ENCRYANDDECRYPT_DIALOG };  // NOTE: the ClassWizard will add data members here //}}AFX_DATA

 // ClassWizard generated virtual function overrides

 //{ {AFX_VIRTUAL(CEncryAndDecryptDlg) public: virtual BOOL PreTranslateMessage(MSG* pMsg); protected: virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support //}}AFX_VIRTUAL

// Implementation

protected: HICON m_hIcon; void ShowFileGroup(BOOL bShow); void ShowStringGroup(BOOL bShow); void MoveFileGroup(); void MoveStringGroup(); BOOL ToPrimeNumber(CString szTemp); BOOL IsPrime(int x); // Generated message map functions //{ {AFX_MSG(CEncryAndDecryptDlg) virtual BOOL OnInitDialog(); afx_msg void OnSysCommand(UINT nID, LPARAM lParam); afx_msg void OnPaint(); afx_msg HCURSOR OnQueryDragIcon(); afx_msg void OnExit(); afx_msg void OnHelp(); afx_msg void OnRadstr(); afx_msg void OnRadfile(); afx_msg void OnBtnfile(); afx_msg void OnBtnfiledigest(); afx_msg void OnBtnsaveas(); afx_msg void OnKickIdle(); afx_msg void OnSelchangeCombomethods(); afx_msg void OnRadalpha(); afx_msg void OnRadhex(); afx_msg void OnRaddecrypt(); afx_msg void OnRadencrypt(); afx_msg void OnBtnstringdigest(); //}}AFX_MSG afx_msg void OnUpdateBtnFileEncry(CCmdUI* pCmdUI); afx_msg void OnUpdateBtnStrEncry(CCmdUI* pCmdUI); afx_msg void OnUpdateBtnSaveAs(CCmdUI* pCmdUI); afx_msg void OnUpdateEditDES(CCmdUI* pCmdUI); afx_msg void OnUpdateEditP(CCmdUI* pCmdUI); afx_msg void OnUpdateEditQ(CCmdUI* pCmdUI); DECLARE_MESSAGE_MAP()private: int m_iRSAn; int m_iRSAe; enum {FILE = 0, STRING = 1};//对两种模式的定义 enum {DES = 0, MD5 = 1,RSA = 2};//对使用的加密算法进行定义 enum {ENCRYPT = 0, DECRYPT = 1};//对加密和解密进行定义 int m_iMode;//模式变量 int m_iMethod;//算法变量 int m_iAction;//加密还是解密 //颜色变量 COLORREF m_oPlainFrg, m_oPlainBg, m_oPlainBg1; COLORREF m_oDigFrg, m_oDigBg, m_oDigBg1;

 CMenu m_oMenu;//菜单类,用于添加退出菜单

 CToolTipCtrl m_oToolTipCtrl;//提示信息类，主要是起到提示功能 CTransparentBitmap m_oTransparentBitmap1,m_oTransparentBitmap2;//用于位图处理，使位图透明 CBitmap m_oBMP1,m_oBMP2;//位图变量 CEditSelect m_oEditDES;//IDC_EDITDES CEditSelect m_oEditP;//IDC_EDITP CEditSelect m_oEditQ;//IDC_EDITQ CEditSelect m_oEditFile; //IDC_EDITFILE CEditReadonly m_oEditStr1; //IDC_EDITSTR1 CEditReadonly m_oEditHex1; //IDC_EDITHEX1 CEditSelect m_oEditAlpha; //IDC_EDITALPHA CEditHex m_oEditHex; //IDC_EDITHEX CEditReadonly m_oEditStr2; //IDC_EDITSTR2 CEditReadonly m_oEditHex2; //IDC_EDITHEX2

 //算法类

 CMD5 m_oMD5; CDES m_oDES;  CRSA m_oRSA;};

//{

{AFX_INSERT_LOCATION}}// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_ENCRYANDDECRYPTDLG_H__DF1A4BD7_CD11_4F04_9D56_71AB1AA682C6__INCLUDED_)

// EncryAndDecryptDlg.cpp : implementation file//

#include "stdafx.h"

#include "EncryAndDecrypt.h"#include "EncryAndDecryptDlg.h"#include <shlwapi.h>#include <cmath>

//动态加载库文件

#pragma comment(lib,"shlwapi.lib")

#ifdef _DEBUG

#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE[] = __FILE__;#endif

/

// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog

{ public: CAboutDlg();

// Dialog Data

 //{ {AFX_DATA(CAboutDlg) enum { IDD = IDD_ABOUTBOX }; //}}AFX_DATA

 // ClassWizard generated virtual function overrides

 //{ {AFX_VIRTUAL(CAboutDlg) protected: virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support //}}AFX_VIRTUAL

// Implementation

protected: //{ {AFX_MSG(CAboutDlg) //}}AFX_MSG DECLARE_MESSAGE_MAP()};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)

{  //{ {AFX_DATA_INIT(CAboutDlg) //}}AFX_DATA_INIT}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)

{  CDialog::DoDataExchange(pDX); //{ {AFX_DATA_MAP(CAboutDlg) //}}AFX_DATA_MAP}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)

 //{ {AFX_MSG_MAP(CAboutDlg)  // No message handlers //}}AFX_MSG_MAPEND_MESSAGE_MAP()

/

// CEncryAndDecryptDlg dialog//使用构造函数对控件进行初始化CEncryAndDecryptDlg::CEncryAndDecryptDlg(CWnd* pParent /*=NULL*/) : CDialog(CEncryAndDecryptDlg::IDD, pParent),m_iAction(ENCRYPT),m_iMode(FILE),m_iMethod(DES), m_oPlainFrg(RGB(0,0,200)), m_oPlainBg(RGB(255,200,200)), m_oPlainBg1(RGB(100,200,100)), m_oDigFrg(RGB(0,130,0)), m_oDigBg(RGB(200,200,255)), m_oDigBg1(RGB(150,150,200)), m_oEditDES(RGB(20,20,100), RGB(150,200,200)),m_oEditP(RGB(20,20,100), RGB(150,200,200)),m_oEditQ(RGB(20,20,100), RGB(150,200,200)), m_oEditFile(m_oPlainFrg, m_oPlainBg), m_oEditStr1(m_oDigFrg, m_oDigBg), m_oEditHex1(m_oDigFrg, m_oDigBg),m_oEditAlpha(m_oPlainFrg, m_oPlainBg), m_oEditHex(m_oPlainFrg, m_oPlainBg1),m_oEditStr2(m_oDigFrg, m_oDigBg), m_oEditHex2(m_oDigFrg, m_oDigBg),m_iRSAe(0),m_iRSAn(0){  //{ {AFX_DATA_INIT(CEncryAndDecryptDlg)  // NOTE: the ClassWizard will add member initialization here //}}AFX_DATA_INIT // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDR_TITLE);//显示小图标}

void CEncryAndDecryptDlg::DoDataExchange(CDataExchange* pDX)

{  CDialog::DoDataExchange(pDX); //{ {AFX_DATA_MAP(CEncryAndDecryptDlg)  // NOTE: the ClassWizard will add DDX and DDV calls here //}}AFX_DATA_MAP}

BEGIN_MESSAGE_MAP(CEncryAndDecryptDlg, CDialog)

 //{ {AFX_MSG_MAP(CEncryAndDecryptDlg) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_COMMAND(IDM_EXIT, OnExit) ON_COMMAND(IDM_HELP, OnHelp) ON_BN_CLICKED(IDC_RADSTR, OnRadstr) ON_BN_CLICKED(IDC_RADFILE, OnRadfile) ON_BN_CLICKED(IDC_BTNFILE, OnBtnfile) ON_BN_CLICKED(IDC_BTNFILEDIGEST, OnBtnfiledigest) ON_BN_CLICKED(IDC_BTNSAVEAS, OnBtnsaveas) ON_MESSAGE_VOID(WM_KICKIDLE, OnKickIdle) ON_CBN_SELCHANGE(IDC_COMBO_METHODS, OnSelchangeCombomethods) ON_BN_CLICKED(IDC_RADALPHA, OnRadalpha) ON_BN_CLICKED(IDC_RADHEX, OnRadhex) ON_BN_CLICKED(IDC_RADDECRYPT, OnRaddecrypt) ON_BN_CLICKED(IDC_RADENCRYPT, OnRadencrypt) ON_UPDATE_COMMAND_UI(IDC_BTNFILEDIGEST, OnUpdateBtnFileEncry) ON_UPDATE_COMMAND_UI(IDC_BTNSTRINGDIGEST, OnUpdateBtnStrEncry) ON_UPDATE_COMMAND_UI(IDC_BTNSAVEAS, OnUpdateBtnSaveAs) ON_UPDATE_COMMAND_UI(IDC_EDITDES, OnUpdateEditDES) ON_UPDATE_COMMAND_UI(IDC_EDITP, OnUpdateEditP) ON_UPDATE_COMMAND_UI(IDC_EDITQ, OnUpdateEditQ) ON_BN_CLICKED(IDC_BTNSTRINGDIGEST, OnBtnstringdigest) //}}AFX_MSG_MAPEND_MESSAGE_MAP()

/

// CEncryAndDecryptDlg message handlers

//下面是16进制和字符以及二进制相互转化的全局函数//将字符转化为16进制void Char2Hex(unsigned char ch, char* szHex){  static unsigned char saucHex[] = "0123456789ABCDEF"; szHex[0] = saucHex[ch >> 4]; szHex[1] = saucHex[ch&0xF]; szHex[2] = 0;}

//将16进制数据转化为字符类型

bool Hex2Char(char const* szHex, unsigned char& rch){  if(*szHex >= '0' && *szHex <= '9')  rch = *szHex - '0'; else if(*szHex >= 'A' && *szHex <= 'F')  rch = *szHex - 55; else  //不是16进制数据  return false;  szHex++; if(*szHex >= '0' && *szHex <= '9')  (rch <<= 4) += *szHex - '0'; else if(*szHex >= 'A' && *szHex <= 'F')  (rch <<= 4) += *szHex - 55; else  //不是16进制数据  return false; return true;}

//将二进制数据转化为16进制数据

void Binary2Hex(unsigned char const* pucBinStr, int iBinSize, char* pszHexStr){  int i; char szHex[3]; unsigned char const* pucBinStr1 = pucBinStr; *pszHexStr = 0; for(i=0; i<iBinSize; i++,pucBinStr1++) {   Char2Hex(*pucBinStr1, szHex);  strcat(pszHexStr, szHex); }}

//将16进制转化为2进制

bool Hex2Binary(char const* pszHexStr, unsigned char* pucBinStr, int iBinSize){  int i; unsigned char ch; for(i=0; i<iBinSize; i++,pszHexStr+=2,pucBinStr++) {   if(false == Hex2Char(pszHexStr, ch))   return false;  *pucBinStr = ch; } return true;}

BOOL CEncryAndDecryptDlg::OnInitDialog()

{  CDialog::OnInitDialog();

 // Add "About..." menu item to system menu.

 // IDM_ABOUTBOX must be in the system command range.

 ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); ASSERT(IDM_ABOUTBOX < 0xF000);

 CMenu* pSysMenu = GetSystemMenu(FALSE);

 if (pSysMenu != NULL) {   CString strAboutMenu;  strAboutMenu.LoadString(IDS_ABOUTBOX);  if (!strAboutMenu.IsEmpty())  {    pSysMenu->AppendMenu(MF_SEPARATOR);   pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);  } }

 // Set the icon for this dialog.  The framework does this automatically

 //  when the application's main window is not a dialog SetIcon(m_hIcon, TRUE);   // Set big icon SetIcon(m_hIcon, FALSE);  // Set small icon  // TODO: Add extra initialization here //添加自己的菜单资源 m_oMenu.LoadMenu(IDR_MENU); SetMenu(&m_oMenu);

 //对控件颜色进行显示

 m_oEditDES.SubclassDlgItem(IDC_EDITDES,this); m_oEditP.SubclassDlgItem(IDC_EDITP,this); m_oEditQ.SubclassDlgItem(IDC_EDITQ,this); m_oEditFile.SubclassDlgItem(IDC_EDITFILE, this); m_oEditStr1.SubclassDlgItem(IDC_EDITSTR1, this); m_oEditHex1.SubclassDlgItem(IDC_EDITHEX1, this); m_oEditAlpha.SubclassDlgItem(IDC_EDITALPHA, this); m_oEditHex.SubclassDlgItem(IDC_EDITHEX, this); m_oEditStr2.SubclassDlgItem(IDC_EDITSTR2, this); m_oEditHex2.SubclassDlgItem(IDC_EDITHEX2, this);

 //对控件进行提示，便于用户进行输入

 if(!m_oToolTipCtrl.Create(this)) {   TRACE("/nUnable to create ToolTip control");//创建失败 } else {   //添加提示信息  m_oToolTipCtrl.AddTool(&m_oEditDES,IDS_EDITDES);  m_oToolTipCtrl.AddTool(&m_oEditP,IDS_EDITP);  m_oToolTipCtrl.AddTool(&m_oEditQ,IDS_EDITQ);  m_oToolTipCtrl.AddTool(&m_oEditFile,IDS_EDITFILE);  m_oToolTipCtrl.AddTool(&m_oEditStr1,IDS_EDITSTR1);  m_oToolTipCtrl.AddTool(&m_oEditHex1,IDS_EDITHEX1);  m_oToolTipCtrl.AddTool(&m_oEditAlpha,IDS_EDITALPHA);  m_oToolTipCtrl.AddTool(&m_oEditHex,IDS_EDITHEX);  m_oToolTipCtrl.AddTool(&m_oEditStr2,IDS_EDITSTR2);  m_oToolTipCtrl.AddTool(&m_oEditHex2,IDS_EDITHEX2);  //激活控件  m_oToolTipCtrl.Activate(TRUE); } //初始化显示文件面板 CRect oRect, oRectDlg; CWnd* poWnd = GetDlgItem(IDC_EDITHEX1); poWnd->GetWindowRect(&oRect); GetWindowRect(&oRectDlg); SetWindowPos(NULL, 0, 0, oRectDlg.Width(), oRect.bottom-oRectDlg.top+15, SWP_NOMOVE|SWP_NOZORDER);//通过设置窗体位置来确定文件面板 //初始化单选框 CButton* poButton; poButton = (CButton*)(GetDlgItem(IDC_RADFILE));//或者使用poButton = reinterpret_cast<CButton*>(GetDlgItem(IDC_RADFILE)); poButton->SetCheck(1); poButton = (CButton*)(GetDlgItem(IDC_RADALPHA));//或者使用poButton = reinterpret_cast<CButton*>(GetDlgItem(IDC_RADALPHA)); poButton->SetCheck(1); poButton = (CButton*)(GetDlgItem(IDC_RADENCRYPT));//或者使用poButton = reinterpret_cast<CButton*>(GetDlgItem(IDC_RADENCRYPT)); poButton->SetCheck(1); //初始化组合框 CComboBox* poComboBox; poComboBox = (CComboBox*)(GetDlgItem(IDC_COMBO_METHODS));//或者使用poComboBox = static_cast<CComboBox*>(GetDlgItem(IDC_COMBO_METHODS)); poComboBox->SetCurSel(0);

 //显示位图资源

 m_oBMP1.LoadBitmap(IDB_BMPDOWN); m_oBMP2.LoadBitmap(IDB_BMPUP); //对文件面板的位图进行显示 m_oTransparentBitmap1.SubclassDlgItem(IDC_STATICBMPARROW1, this); m_oTransparentBitmap1.Initialize(HBITMAP(m_oBMP1), RGB(255,255,255), 1.0, 1.0); //对字符串面板的位图进行显示 m_oTransparentBitmap2.SubclassDlgItem(IDC_STATICBMPARROW2, this); m_oTransparentBitmap2.Initialize(HBITMAP(m_oBMP1), RGB(255,255,255), 1.0, 1.0);

 return TRUE;  // return TRUE  unless you set the focus to a control

}

//通过处理鼠标事件来添加提示控件处理信息

BOOL CEncryAndDecryptDlg::PreTranslateMessage(MSG* pMsg) {  // TODO: Add your specialized code here and/or call the base class //通过鼠标来显示提示信息 m_oToolTipCtrl.RelayEvent(pMsg); return CDialog::PreTranslateMessage(pMsg);}

void CEncryAndDecryptDlg::OnKickIdle()

{     //Call this member function to update the state of dialog buttons and other controls    //in a dialog box or window that uses the ON_UPDATE_COMMAND_UI callback mechanism UpdateDialogControls( this, FALSE );}

void CEncryAndDecryptDlg::OnSysCommand(UINT nID, LPARAM lParam)

{  if ((nID & 0xFFF0) == IDM_ABOUTBOX) {   CAboutDlg dlgAbout;  dlgAbout.DoModal(); } else {   CDialog::OnSysCommand(nID, lParam); }}

// If you add a minimize button to your dialog, you will need the code below

//  to draw the icon.  For MFC applications using the document/view model,//  this is automatically done for you by the framework.

void CEncryAndDecryptDlg::OnPaint()

{  if (IsIconic()) {   CPaintDC dc(this); // device context for painting

  SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

  // Center icon in client rectangle

  int cxIcon = GetSystemMetrics(SM_CXICON);  int cyIcon = GetSystemMetrics(SM_CYICON);  CRect rect;  GetClientRect(&rect);  int x = (rect.Width() - cxIcon + 1) / 2;  int y = (rect.Height() - cyIcon + 1) / 2;

  // Draw the icon

  dc.DrawIcon(x, y, m_hIcon); } else {   CDialog::OnPaint(); }}

// The system calls this to obtain the cursor to display while the user drags

//  the minimized window.HCURSOR CEncryAndDecryptDlg::OnQueryDragIcon(){  return (HCURSOR) m_hIcon;}

//处理退出菜单事件

void CEncryAndDecryptDlg::OnExit() {  CDialog::EndDialog(IDOK);}

void CEncryAndDecryptDlg::OnHelp()

{  CAboutDlg dlg; dlg.DoModal();}//显示File模式面板void CEncryAndDecryptDlg::OnRadfile() {  //将字符串面板屏蔽 ShowStringGroup(FALSE); MoveFileGroup(); //将文件面板所有控件显示 ShowFileGroup(TRUE); //重新设置面板显示的位置 CRect oRect, oRectDlg; CWnd* poWnd = GetDlgItem(IDC_EDITHEX1); poWnd->GetWindowRect(&oRect); GetWindowRect(&oRectDlg); SetWindowPos(NULL, 0, 0, oRectDlg.Width(), oRect.bottom-oRectDlg.top+15, SWP_NOMOVE|SWP_NOZORDER); m_iMode = FILE;}

//显示String模式面板

void CEncryAndDecryptDlg::OnRadstr() {  //将文件面板屏蔽 ShowFileGroup(FALSE); MoveStringGroup(); //将字符串面板所有控件显示 ShowStringGroup(TRUE); //重新设置字符串面板显示的位置 CRect oRect, oRectDlg; CWnd* poWnd = GetDlgItem(IDC_EDITHEX2); poWnd->GetWindowRect(&oRect); GetWindowRect(&oRectDlg); SetWindowPos(NULL, 0, 0, oRectDlg.Width(), oRect.bottom-oRectDlg.top+15, SWP_NOMOVE|SWP_NOZORDER); m_iMode = STRING;}//显示File模式所对应的面板上的所有控件void CEncryAndDecryptDlg::ShowFileGroup(BOOL bShow){  CWnd* poWnd; //显示各个控件 poWnd = GetDlgItem(IDC_LBLFILE); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_EDITFILE); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_BTNFILE); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_STATICBMPARROW1); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_BTNFILEDIGEST); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_LBLSTR1); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_EDITSTR1); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_BTNSAVEAS); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_LBLHEX1); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_EDITHEX1); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE);}

//显示String模式所对应的面板上的所有控件

void CEncryAndDecryptDlg::ShowStringGroup(BOOL bShow){  CWnd* poWnd; //显示各个控件 poWnd = GetDlgItem(IDC_LBLSTR); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_EDITALPHA); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_EDITHEX); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_RADALPHA); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_RADHEX); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_STATICBMPARROW2); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_BTNSTRINGDIGEST); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_LBLSTR2); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_EDITSTR2); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_LBLHEX2); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE); poWnd = GetDlgItem(IDC_EDITHEX2); poWnd->ShowWindow(bShow ? SW_SHOW : SW_HIDE);}void CEncryAndDecryptDlg::MoveFileGroup(){  //获取y坐标 CRect oRect; CWnd* poWnd; poWnd = GetDlgItem(IDC_BORDER); poWnd->GetWindowRect(&oRect); int iYRef = oRect.bottom; poWnd = GetDlgItem(IDC_LBLFILE); poWnd->GetWindowRect(&oRect); int iDelta = oRect.top - iYRef; //坐标转化 ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); //设置各个控件的位置 // poWnd = GetDlgItem(IDC_EDITFILE); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); // poWnd = GetDlgItem(IDC_BTNFILE); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); // poWnd = GetDlgItem(IDC_STATICBMPARROW1); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); // poWnd = GetDlgItem(IDC_BTNFILEDIGEST); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); // poWnd = GetDlgItem(IDC_LBLSTR1); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); // poWnd = GetDlgItem(IDC_EDITSTR1); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); // poWnd = GetDlgItem(IDC_BTNSAVEAS); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); // poWnd = GetDlgItem(IDC_LBLHEX1); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); // poWnd = GetDlgItem(IDC_EDITHEX1); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER);}void CEncryAndDecryptDlg::MoveStringGroup(){  //获取y坐标 CRect oRect; CWnd* poWnd; poWnd = GetDlgItem(IDC_BORDER); poWnd->GetWindowRect(&oRect); int iYRef = oRect.bottom; poWnd = GetDlgItem(IDC_LBLSTR); poWnd->GetWindowRect(&oRect); int iDelta = oRect.top - iYRef; //坐标转化 ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); //设置各个控件的位置 // poWnd = GetDlgItem(IDC_EDITALPHA); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); // poWnd = GetDlgItem(IDC_EDITHEX); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); // poWnd = GetDlgItem(IDC_RADALPHA); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); // poWnd = GetDlgItem(IDC_RADHEX); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); // poWnd = GetDlgItem(IDC_STATICBMPARROW2); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); // poWnd = GetDlgItem(IDC_BTNSTRINGDIGEST); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); // poWnd = GetDlgItem(IDC_LBLSTR2); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); // poWnd = GetDlgItem(IDC_EDITSTR2); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); // poWnd = GetDlgItem(IDC_LBLHEX2); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER); // poWnd = GetDlgItem(IDC_EDITHEX2); poWnd->GetWindowRect(&oRect); ScreenToClient(oRect); poWnd->SetWindowPos(NULL, oRect.left, oRect.top-iDelta, 0, 0, SWP_NOSIZE|SWP_NOZORDER);}

//点击浏览按钮

void CEncryAndDecryptDlg::OnBtnfile() {  // TODO: Add your control notification handler code here CFileDialog m_FileOpen(TRUE); //设置打开窗体的标题    m_FileOpen.m_ofn.lpstrTitle = _T("打开文件");    m_FileOpen.m_ofn.lpstrFilter = _T("文件 (*.*)/0*.*/0/0"); //点击浏览按钮 if(IDOK == m_FileOpen.DoModal()) {   //获取打开的文件路径  CString m_FileName = m_FileOpen.GetPathName();  CEdit* pEdit = (CEdit*)(GetDlgItem(IDC_EDITFILE));  //将选择的文件路径名显示到IDC_EDITFILE表识的EDIT中  pEdit->SetWindowText(m_FileName); }}

//点击按钮保存

void CEncryAndDecryptDlg::OnBtnsaveas() {  // TODO: Add your control notification handler code here CFileDialog oFileOpen(FALSE); //设置保存文件的标题    oFileOpen.m_ofn.lpstrTitle = _T("保存加密文件");    oFileOpen.m_ofn.lpstrFilter = _T("文件格式 (*.txt)/0*.txt/0(*.*)/0*.*/0/0"); if(oFileOpen.DoModal() == IDOK) {   //获取文件路径  CString oStrFileName = oFileOpen.GetPathName();  oStrFileName += ".txt";  CFile oFile;  //文件异常类，用于捕获文件异常  CFileException oFileException;  TCHAR szBuff[MAX_PATH+1];  _tcscpy(szBuff, LPCTSTR(oStrFileName));  //获取路径或文件名中的文件扩展名  CString pcExt = ::PathFindExtension(oStrFileName);  //创建文件来保存,以二进制形式来保存  BOOL bOpen = oFile.Open(oStrFileName, CFile::modeCreate|CFile::modeWrite|CFile::typeBinary, &oFileException);  if(bOpen == TRUE)  {    //打开文件处理   char acDigest[65] = {0};   CEdit* poEdit = (CEdit*)(GetDlgItem(IDC_EDITHEX1));   CString oStrHex;   poEdit->GetWindowText(oStrHex);   int iLength;   switch(m_iMethod)   {     case DES:     AfxMessageBox("采用DES算法");     break;    case MD5:     iLength = 16;     break;    case RSA:     AfxMessageBox("采用RSA算法");     break;    default:     ASSERT(0);   }   Hex2Binary(LPCTSTR(oStrHex), reinterpret_cast<unsigned char*>(acDigest), iLength);   oFile.Write(acDigest, iLength);   oFile.Close();   AfxMessageBox("保存文件成功!");  }  else  {    AfxMessageBox("保存文件失败!");  } }}

//使文件加密按钮有效

void CEncryAndDecryptDlg::OnUpdateBtnFileEncry(CCmdUI* pCmdUI){  BOOL m_bTemp = TRUE; CEdit* pEdit = (CEdit*)(GetDlgItem(IDC_EDITFILE)); //当没有输入IDC_EDITFILE的字符长度或者算法选择MD5同时为解密算法,按钮无效 if(pEdit->GetWindowTextLength() <= 0)  m_bTemp = FALSE; if((m_iMethod == MD5) && (m_iAction == DECRYPT))  m_bTemp = FALSE; pCmdUI->Enable(m_bTemp);}

//使文件加密按钮有效

void CEncryAndDecryptDlg::OnUpdateBtnStrEncry(CCmdUI* pCmdUI){  BOOL m_bTemp = TRUE; CEdit* pEdit1,*pEdit2; pEdit1 = (CEdit*)(GetDlgItem(IDC_EDITSTR2)); pEdit2 = (CEdit*)(GetDlgItem(IDC_EDITALPHA)); if(m_iAction == ENCRYPT)//加密时的处理 {   //当算法选择MD5同时为解密算法,按钮无效  if((m_iMethod == MD5) && (m_iAction == DECRYPT))   m_bTemp = FALSE;  pCmdUI->Enable(m_bTemp); } else//解密时的处理 {   //当IDC_EDITSTR2没有信息时候  if(pEdit1->GetWindowTextLength() <= 0)   m_bTemp = FALSE;  //用于设置解密只能一次  if(pEdit2->GetWindowTextLength() && m_iMethod == DES)   m_bTemp = FALSE;  if((m_iMethod == MD5) && (m_iAction == DECRYPT))   m_bTemp = FALSE;  if((m_iMethod == RSA) && (pEdit2->GetWindowTextLength() > 0))   m_bTemp = FALSE;  pCmdUI->Enable(m_bTemp); }}

//使保存按钮有效

void CEncryAndDecryptDlg::OnUpdateBtnSaveAs(CCmdUI* pCmdUI){  CEdit* pEdit = (CEdit*)(GetDlgItem(IDC_EDITSTR1)); //当有字符串输入到ID号为IDC_EDITSTR1的EDITBOX里面，该按钮就有效 pCmdUI->Enable(pEdit->GetWindowTextLength() > 0);}

//使ID号为IDC_EDITDES的EDITBOX变得有效或者无效

void CEncryAndDecryptDlg::OnUpdateEditDES(CCmdUI* pCmdUI){ /* BOOL m_bTemp = TRUE; if((m_iMethod == MD5) || (m_iMethod == RSA))  m_bTemp = FALSE;*/ pCmdUI->Enable(m_iMethod == DES);}

//使ID号为IDC_EDITP的EDITBOX变得有效或者无效

void CEncryAndDecryptDlg::OnUpdateEditP(CCmdUI* pCmdUI){  pCmdUI->Enable(m_iMethod == RSA);}

//使ID号为IDC_EDITQ的EDITBOX变得有效或者无效

void CEncryAndDecryptDlg::OnUpdateEditQ(CCmdUI* pCmdUI){  pCmdUI->Enable(m_iMethod == RSA);}

//判别使用什么加密算法

void CEncryAndDecryptDlg::OnSelchangeCombomethods(){  CComboBox* poComboBox; poComboBox = (CComboBox*)(GetDlgItem(IDC_COMBO_METHODS)); int iSel = poComboBox->GetCurSel(); ASSERT((iSel >= DES)&&(iSel <= RSA)); m_iMethod = iSel;//获取选中的值}

//点击单选框字符时的处理

void CEncryAndDecryptDlg::OnRadalpha() {  // TODO: Add your control notification handler code here //使字符串EDITBOX有效 m_oEditAlpha.EnableWindow(TRUE); //对该EDITBOX重新设置背景 m_oEditAlpha.SetBkColor(m_oPlainBg); //使16进制EDITBOX无效 m_oEditHex.EnableWindow(FALSE); //对该EDITBOX重新设置背景 m_oEditHex.SetBkColor(m_oPlainBg1);}

//点击单选框16进制时的处理

void CEncryAndDecryptDlg::OnRadhex() {  // TODO: Add your control notification handler code here //使字符串EDITBOX无效 m_oEditAlpha.EnableWindow(FALSE); //对该EDITBOX重新设置背景 m_oEditAlpha.SetBkColor(m_oPlainBg1); //使16进制EDITBOX有效 m_oEditHex.EnableWindow(TRUE); //对该EDITBOX重新设置背景 m_oEditHex.SetBkColor(m_oPlainBg);}

//点击单选框解密时的处理

void CEncryAndDecryptDlg::OnRaddecrypt() {  // TODO: Add your control notification handler code here //记录动作为解密  m_iAction = DECRYPT; //改变按钮为解密 CButton* poButton1 = (CButton*)(GetDlgItem(IDC_BTNFILEDIGEST)); poButton1->SetWindowText("&文件解密"); CButton *poButton2 = (CButton*)(GetDlgItem(IDC_BTNSTRINGDIGEST)); poButton2->SetWindowText("&字符串解密"); //更换位图 m_oTransparentBitmap1.ChangeBitmap(HBITMAP(m_oBMP2)); m_oTransparentBitmap2.ChangeBitmap(HBITMAP(m_oBMP2));}

//点击单选框加密时的处理

void CEncryAndDecryptDlg::OnRadencrypt() {  // TODO: Add your control notification handler code here //记录动作为加密  m_iAction = ENCRYPT; //改变按钮为加密 CButton* poButton1 = (CButton*)(GetDlgItem(IDC_BTNFILEDIGEST)); poButton1->SetWindowText("&文件加密"); CButton *poButton2 = (CButton*)(GetDlgItem(IDC_BTNSTRINGDIGEST)); poButton2->SetWindowText("&字符串加密"); //更换位图 m_oTransparentBitmap1.ChangeBitmap(HBITMAP(m_oBMP1)); m_oTransparentBitmap2.ChangeBitmap(HBITMAP(m_oBMP1));}

//对文件进行加密处理

void CEncryAndDecryptDlg::OnBtnfiledigest() {  // TODO: Add your control notification handler code here、 //判别算法为加密算法还是解密算法 CButton* poAction = (CButton*)(GetDlgItem(IDC_RADENCRYPT)); //从EDIT中获取文件名 CString strFileName; CEdit* poEdit = (CEdit*)(GetDlgItem(IDC_EDITFILE)); poEdit->GetWindowText(strFileName); //确定选择的方法 /*switch(m_iMethod) {   case DES:   AfxMessageBox("采用DES算法");   break;  case MD5:   AfxMessageBox("采用MD5算法");   break;  case RSA:   AfxMessageBox("采用RSA算法");   break; }*/ //对文件进行加密解密 char acDigest[65] = {0}; char szHexDigest[129] = {0}; int iLength; //判别为加密算法还是解密算法 if(poAction->GetCheck() == 1)//为加密算法 {   m_iAction = ENCRYPT;  switch(m_iMethod)  {    case DES:    AfxMessageBox("采用DES算法加密显示结果");    break;   case MD5:    AfxMessageBox("采用MD5算法加密显示结果");    //对摘要进行加密    m_oMD5.DigestFile(LPCTSTR(strFileName), acDigest);    Binary2Hex(reinterpret_cast<unsigned char*>(acDigest), 16, szHexDigest);    iLength = 16;    break;   case RSA:    AfxMessageBox("采用RSA算法加密显示结果");    break;  }  //将结果显示出来  poEdit = (CEdit*)(GetDlgItem(IDC_EDITHEX1));  poEdit->SetWindowText(szHexDigest);  //判别是否存在非法字符  for(int i=0; i<iLength; i++)   if(acDigest[i] == 0)    acDigest[i] = 0x0A;   poEdit = (CEdit*)(GetDlgItem(IDC_EDITSTR1));  poEdit->SetWindowText(acDigest); } else//解密算法 {   m_iAction = DECRYPT;  switch(m_iMethod)  {    case DES:    AfxMessageBox("DES算法解密显示结果");    break;   case MD5://解密按钮已经被屏蔽掉    break;   case RSA:    AfxMessageBox("采用RSA算法解密显示结果");    break;  }  }}

//对字符串或者是16进制数据进行加密或者解密

void CEncryAndDecryptDlg::OnBtnstringdigest() {  // TODO: Add your control notification handler code here //判别算法为加密算法还是解密算法 CButton* poAction = (CButton*)(GetDlgItem(IDC_RADENCRYPT)); CEdit* poEdit; //获取单选框的值，用于区分为字符串还是16进制数据 CButton* poButton = (CButton*)(GetDlgItem(IDC_RADALPHA)); //确定选择的方法 /*switch(m_iMethod) {   case DES:   AfxMessageBox("采用DES算法");   break;  case MD5:   AfxMessageBox("采用MD5算法");   break;  case RSA:   AfxMessageBox("采用RSA算法");   break; }*/ CString strTemp,strPrimeP,strPrimeQ;//用于获取EDIT中输入的信息 char acDigest[65] = {0}; int  iLen; //判别为加密算法还是解密算法 if(poAction->GetCheck() == 1)//为加密算法 {   m_iAction = ENCRYPT;  //判别为字符串还是为16进制形式  if(poButton->GetCheck() == 1)//为字符串形式  {    poEdit = (CEdit*)(GetDlgItem(IDC_EDITALPHA));   poEdit->GetWindowText(strTemp);   if(m_iMethod == DES && strTemp.GetLength() != 8)   {     AfxMessageBox("输入的加密的字符串长度不是8位,请重试!");    return;   }   m_oMD5.Reset();   m_oMD5.AddData(LPCTSTR(strTemp),strTemp.GetLength());   m_oMD5.FinalDigest(acDigest);  }  else//为16进制形式  {    poEdit = (CEdit*)(GetDlgItem(IDC_EDITHEX));   poEdit->GetWindowText(strTemp);   iLen = strTemp.GetLength()/2;   char* pcData = static_cast<char*>(_alloca(iLen));   Hex2Binary(LPCTSTR(strTemp), reinterpret_cast<unsigned char*>(pcData), iLen);   m_oMD5.Reset();   m_oMD5.AddData(pcData, iLen);   m_oMD5.FinalDigest(acDigest);  }  //下面就是实现将输出的结果显示在EDIT里面就可以了  char acHex[129] = {0};  poEdit = (CEdit*)(GetDlgItem(IDC_EDITHEX2));  CString strKey,strResult;  CStatic* poStatic;  int iLength,i,iPrimeP = 0,iPrimeQ = 0,iSubkey = 0;  switch(m_iMethod)  {    case DES:    CEdit* poEditKey;    poEditKey = (CEdit*)GetDlgItem(IDC_EDITDES);    poEditKey->GetWindowText(strKey);    //判断密钥的长度是否为8位    if(strKey.GetLength() != 8)    {      AfxMessageBox("输入的密钥长度不是8位,请重试!");     return;    }    //判别里面时候存在中文字符    for(i = 0;i< 8;i++)    {      //重字符串中获取第i个字符     char ch = strKey.GetAt(i);     //判别是否存在非法字符     if(ch&0x80)     {       AfxMessageBox("含有中文字符");      return;     }    }    //返回的加密结果    strResult = m_oDES.Encrypt(strTemp,strKey);    poEdit = (CEdit*)GetDlgItem(IDC_EDITSTR2);    poEdit->SetWindowText(strResult);    //将上面获取的字符串数据转化为16进制数据    Binary2Hex(reinterpret_cast<unsigned char*>(strResult.GetBuffer(0)),16,acHex);    poEdit = (CEdit*)GetDlgItem(IDC_EDITHEX2);    //显示结果    poEdit->SetWindowText(acHex);    //在IDC_LBLSTR上面显示刚刚加密的内容    poStatic = (CStatic*)GetDlgItem(IDC_LBLSTR);    poStatic->SetWindowText("DES加密的明文为:"+strTemp);    //同时将上面的明文去除    poEdit = (CEdit*)GetDlgItem(IDC_EDITALPHA);    poEdit->SetWindowText("");    break;   case MD5:    Binary2Hex(reinterpret_cast<unsigned char*>(acDigest), 16, acHex);    iLength = 16;    poEdit->SetWindowText(acHex);    poEdit = (CEdit*)(GetDlgItem(IDC_EDITSTR2));    //判别是否存在非法字符    for(i=0; i<iLength; i++)     if(acDigest[i] == 0)      acDigest[i] = 0x0A;    poEdit->SetWindowText(acDigest);    break;   case RSA:    poEdit = (CEdit*)GetDlgItem(IDC_EDITP);    poEdit->GetWindowText(strPrimeP);    poEdit = (CEdit*)GetDlgItem(IDC_EDITQ);    poEdit->GetWindowText(strPrimeQ);    //判断输入的数据P、Q是否为素数    if((!ToPrimeNumber(strPrimeP)) || (!ToPrimeNumber(strPrimeQ)))      return;

    AfxMessageBox("采用RSA算法加密显示结果");

    iPrimeP = atoi(strPrimeP.GetBuffer(strPrimeP.GetLength()));    iPrimeQ = atoi(strPrimeQ.GetBuffer(strPrimeQ.GetLength()));    m_iRSAn = iPrimeP*iPrimeQ;    //strTemp为加密的内容    //调用CRSA类来进行加密    iSubkey = m_oRSA.GetSecretKey(iPrimeP,iPrimeQ);    //保存密钥,用于解密    m_iRSAe = iSubkey;    //显示密钥    strKey.Format(_T("%d"),iSubkey);    poStatic = (CStatic*)GetDlgItem(IDC_LBLSTR);    poStatic->SetWindowText("RSA加密的密钥为:"+strKey);    strResult = m_oRSA.Encrypt(strTemp,iPrimeP,iPrimeQ,iSubkey);    //清空IDC_EDITALPHA里面的输入的明文    poEdit = (CEdit*)GetDlgItem(IDC_EDITALPHA);    poEdit->SetWindowText("");    poEdit = (CEdit*)GetDlgItem(IDC_EDITSTR2);    poEdit->SetWindowText(strResult);    //将上面获取的字符串数据转化为16进制数据    Binary2Hex(reinterpret_cast<unsigned char*>(strResult.GetBuffer(0)),16,acHex);    poEdit = (CEdit*)GetDlgItem(IDC_EDITHEX2);    //显示结果    poEdit->SetWindowText(acHex);    break;  } } else//解密算法 {   m_iAction = DECRYPT;  CString szDecyptResult,szDecyptMessage;  switch(m_iMethod)  {    case DES:    //显示解密的结果    szDecyptResult = m_oDES.Decrypt();    poEdit = (CEdit*)GetDlgItem(IDC_EDITALPHA);    //显示解密的结果    poEdit->SetWindowText(szDecyptResult);    break;   case MD5://解密按钮已经被屏蔽掉    break;   case RSA:    AfxMessageBox("采用RSA算法解密显示结果");    //获取解密的密文    poEdit = (CEdit*)GetDlgItem(IDC_EDITSTR2);    poEdit->GetWindowText(szDecyptMessage);    szDecyptResult = m_oRSA.Decrypt(szDecyptMessage,m_iRSAe,m_iRSAn);    poEdit = (CEdit*)GetDlgItem(IDC_EDITALPHA);    poEdit->SetWindowText(szDecyptResult);    break;  }  }}

//对输入的字符串进行转化

BOOL CEncryAndDecryptDlg::ToPrimeNumber(CString szTemp){   //判别szTemp中是否有非数字的字符  int iLength = szTemp.GetLength();  for(int i = 0;i < iLength;i++)  {    char ch = szTemp.GetAt(i);   if(!isdigit(ch))//不是数字   {     AfxMessageBox("输入的数据中含有非数字字符!");    return  FALSE;   }  } //将CString字符串类转化为整形  int INum = atoi(szTemp);  if(!IsPrime(INum))//非素数处理  {   AfxMessageBox("输入的数据不是素数,请重试!");   return  FALSE;  } return TRUE;}

//全局函数,用于判别输入的数据是否为素数

BOOL CEncryAndDecryptDlg::IsPrime(int x){  int k; k = int(sqrt ( x )); for ( int i = 2; i <= k; i ++ ) {   if ( x % i == 0 )       break; } if ( i >= k + 1 )                return  TRUE; else  return  FALSE;}

假如那位想要代码，可以留下邮箱，我看到后会尽快发到你的邮箱里面。

 对了，怎么能够上传代码和图片啊？？？

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