test.cpp

DES加密解密的算法

#include <stdio.h>
#include "des.h"

char inblock[8] = {'c', 'o', 'm', 'p', 'u', 't', 'e', 'r'};
//char inblock[8] = { 0x0a,0x20,0x20,0x20,0x54,0x4f,0x20,0x59 };
char outblock[8];
//char key1[8] = { 0xe6,0xa1,0x2f,0x07,0x9d,0x15,0xc4,0x37 };
char key1[8] = { 0x70, 0x38, 0x9a, 0xec, 0x76, 0x92, 0x84, 0xda };

void displayblock(char *block)
{
	for(int i=0; i<8; i++)
		printf("%02x ", (unsigned char)block[i]);
	printf("\n");
}

void displaybinary(char *block)
{
	for(int i=0; i<8; i++)
	{
		printf("%1d", (block[i] & 0x80) ? 1 : 0);
		printf("%1d", (block[i] & 0x40) ? 1 : 0);
		printf("%1d", (block[i] & 0x20) ? 1 : 0);
		printf("%1d", (block[i] & 0x10) ? 1 : 0);
		printf("%1d", (block[i] & 0x08) ? 1 : 0);
		printf("%1d", (block[i] & 0x04) ? 1 : 0);
		printf("%1d", (block[i] & 0x02) ? 1 : 0);
		printf("%1d", (block[i] & 0x01) ? 1 : 0);
		printf(" ");
	}
	printf("\n");
}

main()
{
	extern char kn[16][6];	
	desinit(key1);

	printf("\n key1:\n");
	displayblock(key1);
	displaybinary(key1);

	printf("\nplaintext: \n");
	displayblock(inblock);
	displaybinary(inblock);

	endes(inblock, outblock);
	
	printf("\nciphertext: \n");
	displayblock(outblock);
	displaybinary(outblock);
}