/* 
 *   Copyright 2014-2021 The GmSSL Project Authors. All Rights Reserved.
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <gmssl/gcm.h>
#include <gmssl/hex.h>
#include <gmssl/error.h>


struct {
	char *H;
	char *A;
	char *C;
	char *T;
} ghash_tests[] = {
	// test 1
	{
		"66e94bd4ef8a2c3b884cfa59ca342b2e",
		"",
		"",
		"00000000000000000000000000000000",
	},
	// test 2
	{
		"66e94bd4ef8a2c3b884cfa59ca342b2e",
		"",
		"0388dace60b6a392f328c2b971b2fe78",
		"f38cbb1ad69223dcc3457ae5b6b0f885",

	},
	// test 3
	{
		"b83b533708bf535d0aa6e52980d53b78",
		"",
		"42831ec2217774244b7221b784d0d49c"
		"e3aa212f2c02a4e035c17e2329aca12e"
		"21d514b25466931c7d8f6a5aac84aa05"
		"1ba30b396a0aac973d58e091473f5985",
		"7f1b32b81b820d02614f8895ac1d4eac",
	},
	// test 4
	{
		"b83b533708bf535d0aa6e52980d53b78",
		"feedfacedeadbeeffeedfacedeadbeef"
		"abaddad2",
		"42831ec2217774244b7221b784d0d49c"
		"e3aa212f2c02a4e035c17e2329aca12e"
		"21d514b25466931c7d8f6a5aac84aa05"
		"1ba30b396a0aac973d58e091",
		"698e57f70e6ecc7fd9463b7260a9ae5f",
	},
	// test 5
	{
		"b83b533708bf535d0aa6e52980d53b78",
		"feedfacedeadbeeffeedfacedeadbeef"
		"abaddad2",
		"61353b4c2806934a777ff51fa22a4755"
		"699b2a714fcdc6f83766e5f97b6c7423"
		"73806900e49f24b22b097544d4896b42"
		"4989b5e1ebac0f07c23f4598",
		"df586bb4c249b92cb6922877e444d37b",
	},
	// test 6
	{
		"b83b533708bf535d0aa6e52980d53b78",
		"feedfacedeadbeeffeedfacedeadbeef"
		"abaddad2",
		"8ce24998625615b603a033aca13fb894"
		"be9112a5c3a211a8ba262a3cca7e2ca7"
		"01e4a9a4fba43c90ccdcb281d48c7c6f"
		"d62875d2aca417034c34aee5",
		"1c5afe9760d3932f3c9a878aac3dc3de",
	},
};

int test_ghash(void)
{
	uint8_t H[16];
	uint8_t A[32];
	uint8_t C[64];
	uint8_t T[16];
	uint8_t out[16];
	size_t Hlen, Alen, Clen, Tlen;
	int i;

	printf("%s\n", __FUNCTION__);

	for (i = 0; i < sizeof(ghash_tests)/sizeof(ghash_tests[0]); i++) {
		hex_to_bytes(ghash_tests[i].H, strlen(ghash_tests[i].H), H, &Hlen);
		hex_to_bytes(ghash_tests[i].A, strlen(ghash_tests[i].A), A, &Alen);
		hex_to_bytes(ghash_tests[i].C, strlen(ghash_tests[i].C), C, &Clen);
		hex_to_bytes(ghash_tests[i].T, strlen(ghash_tests[i].T), T, &Tlen);
		ghash(H, A, Alen, C, Clen, out);

		printf("  test %d %s\n", i + 1, memcmp(out ,T, Tlen) == 0 ? "ok" : "error");
		/*
		format_print(stdout, 0, 2, "H = %s\n", ghash_tests[i].H);
		format_print(stdout, 0, 2, "A = %s\n", ghash_tests[i].A);
		format_print(stdout, 0, 2, "C = %s\n", ghash_tests[i].C);
		format_bytes(stdout, 0, 2, "GHASH(H,A,C) = ", out, 16);
		format_print(stdout, 0, 2, "             = %s\n\n", ghash_tests[i].T);
		*/
	}
	return 1;
}


int main(void)
{
	test_ghash();
	return 1;
}