destest.cpp

对称加密算法DES VC++ 的简单实现

// 3-Des test

#include "Des.h"
#include "stdio.h"
#include "string.h"
#include "memory.h"

void main()
{
	char key[]={0,2,0,0,9,3,5,1,9,8,0,0,9,1,7},buf[255];//设置用于3DES的种子密钥
    //char key[]={0,2,0,0,9,3,5,1},buf[255];//设置用于DES的种子密钥
	char str[]="Gook luck to everyone! --Zhangjinying\n"
		       "Fujian Normal University (www.fjnu.edu.cn)\n"
			   "Email: [e-mail]";

	memset(buf, 0, sizeof(buf));
	strcpy(buf, str);
	puts("\nBefore encrypting");
	puts(buf);

	Des_Go(buf, buf, sizeof(str), key, sizeof(key), ENCRYPT);
	puts("\nAfter encrypting");
	puts(buf);

	Des_Go(buf, buf, sizeof(str), key, sizeof(key), DECRYPT);
	puts("\nAfter decrypting");
	puts(buf);

	getchar();
}