des_example.c

Dr.Sec高速密码算法库Windows版

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

/*		Test Vectors

    key               plain            cipher
0101010101010101 0000000000000000 8CA64DE9C1B123A7
0123456789ABCDEF 0000000000000000 D5D44FF720683D0D
0123456789ABCDEF 0123456789ABCDEF 56CC09E7CFDC4CEF
*/

#define NUM 25
#define BLOCKNUM (NUM*1000*1000)

static unsigned char key[16] = {0x01,0x23,0x45,0x67,0x89,0xab,0xcd,0xef};

static unsigned long RK[256];
static unsigned char plain[8] = {0x01,0x23,0x45,0x67,0x89,0xab,0xcd,0xef};
static unsigned char cipher[8];

char str[1024];

void nullfunc (unsigned long *rk,unsigned char *plain, unsigned char *cipher);

void des_example()
{
	clock_t start,end,t1,t2;
	float mid;
	int i;

	ds_desKeySetup(RK,key,8,NULL);

	start = clock();
	for(i = 0; i<BLOCKNUM; i++){
		ds_desEncryptBlock(RK,plain,cipher);
	}
	end = clock();
	t1 =  end - start;

	start = clock();
	for(i = 0; i<BLOCKNUM; i++){
		nullfunc(RK,plain,cipher);
	}
	end = clock();
	t2 =  end - start;

	str[0] = 0;
	sprintf(str+strlen(str),"Encrypt speed of DES\r\n");

	sprintf(str+strlen(str),"%dM 128-bit blocks encrypted in %d microseconds\r\n",NUM,t1-t2);
	mid = (float)(t1 - t2);
	sprintf(str+strlen(str),"Speed is %.2f\r\n",(NUM*64000)/mid);

	sprintf(str+strlen(str),"\r\nPlain text:    ");
	for(i=0;i<8;i++)
		sprintf(str+strlen(str),"%02X",plain[i]);
	sprintf(str+strlen(str),"\r\nCipher text:   ");
	for(i=0;i<8;i++)
		sprintf(str+strlen(str),"%02X",cipher[i]);
	sprintf(str+strlen(str),"\r\nIt should be:  56CC09E7CFDC4CEF\r\n");

	ds_desDecryptBlock(RK,cipher,plain);
	sprintf(str+strlen(str),"\r\nAfter Decryption: ");
	for(i=0;i<8;i++)
		sprintf(str+strlen(str),"%02X",plain[i]);

	MessageBox(NULL,str,"DES test",MB_OK);
}