test.cpp

通信保密中的des算法的实现

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

void main()
{
	char key[8],buf[255];
	char str[100];
    puts("Enter your key(length=8):");
	gets(key);
    puts("Enter your string(length<=100):");
	gets(str);
	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();
}