/*
 * Copyright (c) 2014 - 2021 The GmSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the GmSSL Project.
 *    (http://gmssl.org/)"
 *
 * 4. The name "GmSSL Project" must not be used to endorse or promote
 *    products derived from this software without prior written
 *    permission. For written permission, please contact
 *    guanzhi1980@gmail.com.
 *
 * 5. Products derived from this software may not be called "GmSSL"
 *    nor may "GmSSL" appear in their names without prior written
 *    permission of the GmSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the GmSSL Project
 *    (http://gmssl.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE GmSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE GmSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <gmssl/sm4.h>
#include <gmssl/rand.h>

static int test_sm4_cbc(void)
{
	SM4_KEY sm4_key;
	uint8_t key[16] = {0};
	uint8_t iv[16];

	uint8_t buf1[2]  = {0};
	uint8_t buf2[32] = {0};
	uint8_t buf3[47] = {0};
	uint8_t buf4[96] = {0};
	uint8_t buf5[96];
	int i;

	sm4_set_encrypt_key(&sm4_key, key);
	sm4_cbc_encrypt(&sm4_key, iv, buf2, 2, buf4);

	for (i = 0; i < 32; i++) {
		printf("%02x", buf4[i]);
	}
	printf("\n");
	return 1;
}

static int test_sm4_cbc_padding(void)
{
	SM4_KEY enc_key;
	SM4_KEY dec_key;
	uint8_t key[16] = {0};
	uint8_t iv[16] = {0};
	uint8_t in[64];
	uint8_t out[128];
	uint8_t buf[128];
	size_t len1, len2, i;

	for (i = 0; i < sizeof(in); i++) {
		in[i] = i;
	}

	sm4_set_encrypt_key(&enc_key, key);
	sm4_set_decrypt_key(&dec_key, key);

	sm4_cbc_padding_encrypt(&enc_key, iv, in, 33, out, &len1);
	printf("c = (%zu) ", len1); for (i = 0; i < len1; i++) printf("%02x", out[i]); printf("\n");

	sm4_cbc_padding_decrypt(&dec_key, iv, out, len1, buf, &len2);
	printf("m = (%zu) ", len2); for (i = 0; i < len2; i++) printf("%02x", buf[i]); printf("\n");

	return 1;
}



int main(void)
{
	test_sm4_cbc();
	test_sm4_cbc_padding();
	return 1;
}