minides_test.c

des 加解密 Crypt_Decrypt algrithms

#include "minides.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

static unsigned char deskey[] = {
							0x2, 0x0, 0x0, 0x7, 0x0, 0x7, 0x2, 0x0,
							0x0, 0x9, 0x2, 0x9, 0x5, 0x9
                        };

void debug_buf(unsigned char *buf, unsigned int len)
{
	int i = 0;
	printf("buf:");

	for (i = 0; i<len; i++)
	{
		if (i % 16 == 0) printf("\n");
		else if (i % 8 == 0) printf("  ");


		printf("%02x ", buf[i]);
	}

	printf("\n");
}

int main(int argc, char *argv[])
{
	unsigned int len = 0;

	unsigned char ibuf[8] = {0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8};

	char buf[1024] = "0721300000179:D801D95901097C5D\r\n"
			"0721300001114:B844F0CA3FFD9345\r\n";
			//"\r\n";

	len = ((sizeof(ibuf) + DES_PADDING_SIZE-1) / DES_PADDING_SIZE) * DES_PADDING_SIZE;

	unsigned char *obuf = NULL;

	obuf = (unsigned char *) malloc(len);

	if (obuf == NULL)
	{
		printf("malloc err\n");
		return -1;
	}

	memset(obuf, 0, len);

	des_enc_dec((char *) obuf, (char *) ibuf, 8, deskey, sizeof(deskey), ENCRYPT);

	debug_buf(obuf, len);

	memset(ibuf, 0, sizeof(ibuf));

	des_enc_dec((char *) ibuf, (char *) obuf, 8, deskey, sizeof(deskey), DECRYPT);

	debug_buf(ibuf, 8);

	free(obuf);

	len = ((strlen(buf) + 7) / 8) * 8;
	obuf = (unsigned char *) malloc(len);

	if (obuf == NULL)
	{
		printf("malloc err\n");
		return -1;
	}

	debug_buf(buf, len);

	memset(obuf, 0, len);

	des_enc_dec((char *) obuf, (char *) buf, strlen(buf), deskey, sizeof(deskey), ENCRYPT);

	debug_buf(obuf, len);

	memset(buf, 0, sizeof(buf));

	des_enc_dec((char *) buf, (char *) obuf, len, deskey, sizeof(deskey), DECRYPT);

	debug_buf(buf, len);

	return 0;
}