main.cpp

des密码简单实现

#include <iostream>
#include <string>
#include "des.h"
using namespace std;
void main()
{   char  str[1000],key[16];
    int key_len,str_len;
	char yes='y';
	while(yes=='y'||yes=='Y')
	{ memset(str,'\0',sizeof(str));
	cout<<"请输入明文:";
	cin>>str;
	cout<<"请输入密钥:";
	cin>>key;
    str_len=strlen(str);
	key_len=strlen(key);
	
	Des_RDes1(str,str,str_len,key,key_len,0);
	cout<<"*******************************"<<endl;
	cout<<"Des加密后密文为:"<<str<<endl;
	cout<<"*******************************"<<endl;
	Des_RDes1(str,str,str_len,key,key_len,1);
	cout<<"解密后为:"<<str<<endl;
	cout<<"是否继续（y，n）：";
	cin>>yes;
	}
}