/*
 *
 *  Wireless daemon for Linux
 *
 *  Copyright (C) 2013-2019  Intel Corporation. All rights reserved.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <ell/ell.h>

#include "src/crypto.h"

struct psk_data {
	const char *passphrase;
	const unsigned char *ssid;
	size_t ssid_len;
	const char *psk;
};

static const unsigned char psk_test_case_1_ssid[] = { 'I', 'E', 'E', 'E' };

static const struct psk_data psk_test_case_1 = {
	.passphrase =	"password",
	.ssid =		psk_test_case_1_ssid,
	.ssid_len =	sizeof(psk_test_case_1_ssid),
	.psk =		"f42c6fc52df0ebef9ebb4b90b38a5f90"
			"2e83fe1b135a70e23aed762e9710a12e",
};

static const unsigned char psk_test_case_2_ssid[] = { 'T', 'h', 'i', 's',
					'I', 's', 'A', 'S', 'S', 'I', 'D' };

static const struct psk_data psk_test_case_2 = {
	.passphrase =	"ThisIsAPassword",
	.ssid =		psk_test_case_2_ssid,
	.ssid_len =	sizeof(psk_test_case_2_ssid),
	.psk =		"0dc0d6eb90555ed6419756b9a15ec3e3"
			"209b63df707dd508d14581f8982721af",
};

static const unsigned char psk_test_case_3_ssid[] = {
				'Z', 'Z', 'Z', 'Z', 'Z', 'Z', 'Z', 'Z',
				'Z', 'Z', 'Z', 'Z', 'Z', 'Z', 'Z', 'Z',
				'Z', 'Z', 'Z', 'Z', 'Z', 'Z', 'Z', 'Z',
				'Z', 'Z', 'Z', 'Z', 'Z', 'Z', 'Z', 'Z' };

static const struct psk_data psk_test_case_3 = {
	.passphrase =	"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
	.ssid =		psk_test_case_3_ssid,
	.ssid_len =	sizeof(psk_test_case_3_ssid),
	.psk =		"becb93866bb8c3832cb777c2f559807c"
			"8c59afcb6eae734885001300a981cc62",
};

static void psk_test(const void *data)
{
	const struct psk_data *test = data;
	unsigned char output[32];
	char psk[65];
	unsigned int i;
	int result;

	printf("Passphrase  = \"%s\"\n", test->passphrase);
	printf("SSID        = {");
	for (i = 0; i < test->ssid_len; i++)
		printf("%s'%c'", i == 0 ? " " : ", ", test->ssid[i]);
	printf(" }\n");
	printf("SSID Length = %zd\n", test->ssid_len);
	printf("PSK         = %s\n", test->psk);

	result = crypto_psk_from_passphrase(test->passphrase,
						test->ssid, test->ssid_len,
						output);
	assert(result == 0);

	for (i = 0; i < sizeof(output); i++)
		sprintf(psk + (i * 2), "%02x", output[i]);

	printf("Result      = %s\n", psk);

	assert(strcmp(test->psk, psk) == 0);
}

struct ptk_data {
	const unsigned char *pmk;
	const unsigned char *aa;
	const unsigned char *spa;
	const unsigned char *snonce;
	const unsigned char *anonce;
	enum crypto_cipher cipher;
	const unsigned char *kck;
	const unsigned char *kek;
	const unsigned char *tk;
};

static unsigned char pmk_data_1[32] = {
	0x0d, 0xc0, 0xd6, 0xeb, 0x90, 0x55, 0x5e, 0xd6,
	0x41, 0x97, 0x56, 0xb9, 0xa1, 0x5e, 0xc3, 0xe3,
	0x20, 0x9b, 0x63, 0xdf, 0x70, 0x7d, 0xd5, 0x08,
	0xd1, 0x45, 0x81, 0xf8, 0x98, 0x27, 0x21, 0xaf,
};

static unsigned char aa_data_1[6] = {
	0xa0, 0xa1, 0xa1, 0xa3, 0xa4, 0xa5,
};

static unsigned char spa_data_1[6] = {
	0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5,
};

static unsigned char snonce_data_1[32] = {
	0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
	0xc8, 0xc9, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5,
	0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd,
	0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5,
};

static unsigned char anonce_data_1[32] = {
	0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
	0xe8, 0xe9, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5,
	0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd,
	0xfe, 0xff, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05,
};

static unsigned char tk_data_1[] = {
	0xb2, 0x36, 0x0c, 0x79, 0xe9, 0x71, 0x0f, 0xdd,
	0x58, 0xbe, 0xa9, 0x3d, 0xea, 0xf0, 0x65, 0x99,
};

static unsigned char kck_data_2[] = {
	0x37, 0x9f, 0x98, 0x52, 0xd0, 0x19, 0x92, 0x36,
	0xb9, 0x4e, 0x40, 0x7c, 0xe4, 0xc0, 0x0e, 0xc8
};

static unsigned char kek_data_2[] = {
	0x47, 0xc9, 0xed, 0xc0, 0x1c, 0x2c, 0x6e, 0x5b,
	0x49, 0x10, 0xca, 0xdd, 0xfb, 0x3e, 0x51, 0xa7,
};

static unsigned char tk_data_2[] = {
	0xb2, 0x36, 0x0c, 0x79, 0xe9, 0x71, 0x0f, 0xdd,
	0x58, 0xbe, 0xa9, 0x3d, 0xea, 0xf0, 0x65, 0x99,
	0xdb, 0x98, 0x0a, 0xfb, 0xc2, 0x9c, 0x15, 0x28,
	0x55, 0x74, 0x0a, 0x6c, 0xe5, 0xae, 0x38, 0x27,
};

static const struct ptk_data ptk_test_1 = {
	.pmk = pmk_data_1,
	.aa = aa_data_1,
	.spa = spa_data_1,
	.snonce = snonce_data_1,
	.anonce = anonce_data_1,
	.cipher = CRYPTO_CIPHER_CCMP,
	.tk = tk_data_1,
};

static const struct ptk_data ptk_test_2 = {
	.pmk = pmk_data_1,
	.aa = aa_data_1,
	.spa = spa_data_1,
	.snonce = snonce_data_1,
	.anonce = anonce_data_1,
	.cipher = CRYPTO_CIPHER_TKIP,
	.kck = kck_data_2,
	.kek = kek_data_2,
	.tk = tk_data_2,
};

static unsigned char pmk_data_3[32] = {
	0x9e, 0x99, 0x88, 0xbd, 0xe2, 0xcb, 0xa7, 0x43,
	0x95, 0xc0, 0x28, 0x9f, 0xfd, 0xa0, 0x7b, 0xc4,
	0x1f, 0xfa, 0x88, 0x9a, 0x33, 0x09, 0x23, 0x7a,
	0x22, 0x40, 0xc9, 0x34, 0xbc, 0xdc, 0x7d, 0xdb,
};

static unsigned char aa_data_3[6] = {
	0x00, 0x0c, 0x41, 0xd2, 0x94, 0xfb,
};

static unsigned char spa_data_3[6] = {
	0x00, 0x0d, 0x3a, 0x26, 0x10, 0xfb,
};

static unsigned char snonce_data_3[32] = {
	0x89, 0x3e, 0xe5, 0x51, 0x21, 0x45, 0x57, 0xff,
	0xf3, 0xc0, 0x76, 0xac, 0x97, 0x79, 0x15, 0xa2,
	0x06, 0x07, 0x27, 0x03, 0x8e, 0x9b, 0xea, 0x9b,
	0x66, 0x19, 0xa5, 0xba, 0xb4, 0x0f, 0x89, 0xc1,
};

static unsigned char anonce_data_3[32] = {
	0xda, 0xbd, 0xc1, 0x04, 0xd4, 0x57, 0x41, 0x1a,
	0xee, 0x33, 0x8c, 0x00, 0xfa, 0x8a, 0x1f, 0x32,
	0xab, 0xfc, 0x6c, 0xfb, 0x79, 0x43, 0x60, 0xad,
	0xce, 0x3a, 0xfb, 0x5d, 0x15, 0x9a, 0x51, 0xf6,
};

static unsigned char kck_data_3[] = {
	0xcc, 0xbf, 0x97, 0xa8, 0x2b, 0x5c, 0x51, 0xa4,
	0x43, 0x25, 0xa7, 0x7e, 0x9b, 0xc5, 0x70, 0x50,
};

static unsigned char kek_data_3[] = {
	0xda, 0xec, 0x54, 0x38, 0x43, 0x0f, 0x00, 0xeb,
	0x89, 0x3d, 0x84, 0xd8, 0xb4, 0xb4, 0xb5, 0xe8,
};

static unsigned char tk_data_3[] = {
	0x19, 0xf4, 0xdc, 0xe0, 0xcc, 0x5f, 0x21, 0x66,
	0xe9, 0x4f, 0xdb, 0x3e, 0xaf, 0x68, 0xeb, 0x76,
	0x80, 0xf4, 0xe2, 0x64, 0x6e, 0x6d, 0x9e, 0x36,
	0x26, 0x0d, 0x89, 0xff, 0xbf, 0x24, 0xee, 0x7e,
};

static const struct ptk_data ptk_test_3 = {
	.pmk = pmk_data_3,
	.aa = aa_data_3,
	.spa = spa_data_3,
	.snonce = snonce_data_3,
	.anonce = anonce_data_3,
	.cipher = CRYPTO_CIPHER_TKIP,
	.kck = kck_data_3,
	.kek = kek_data_3,
	.tk = tk_data_3,
};


static unsigned char pmk_data_4[32] = {
	0x6f, 0xe8, 0x57, 0xc0, 0xb7, 0x42, 0xdf, 0xc2,
	0xda, 0x8a, 0x1f, 0xe8, 0xb1, 0xb4, 0xb4, 0x62,
        0x8d, 0x9f, 0xbb, 0xb0, 0x60, 0x82, 0x6b, 0x83,
	0xcb, 0x43, 0xb6, 0x4b, 0x13, 0xe1, 0x03, 0xe8,
};

static unsigned char aa_data_4[6] = {
	0x00, 0x14, 0x6c, 0x7e, 0x40, 0x80,
};

static unsigned char spa_data_4[6] = {
	0x00, 0x13, 0x46, 0xfe, 0x32, 0x0c,
};

static unsigned char snonce_data_4[32] = {
	0x59, 0x16, 0x8b, 0xc3, 0xa5, 0xdf, 0x18, 0xd7,
	0x1e, 0xfb, 0x64, 0x23, 0xf3, 0x40, 0x08, 0x8d,
	0xab, 0x9e, 0x1b, 0xa2, 0xbb, 0xc5, 0x86, 0x59,
	0xe0, 0x7b, 0x37, 0x64, 0xb0, 0xde, 0x85, 0x70,
};

static unsigned char anonce_data_4[32] = {
	0x22, 0x58, 0x54, 0xb0, 0x44, 0x4d, 0xe3, 0xaf,
	0x06, 0xd1, 0x49, 0x2b, 0x85, 0x29, 0x84, 0xf0,
	0x4c, 0xf6, 0x27, 0x4c, 0x0e, 0x32, 0x18, 0xb8,
	0x68, 0x17, 0x56, 0x86, 0x4d, 0xb7, 0xa0, 0x55,
};

static unsigned char kck_data_4[] = {
	0x9a, 0x75, 0xef, 0x0b, 0xde, 0x7c, 0x20, 0x9c,
	0xca, 0xe1, 0x3f, 0x54, 0xb1, 0xb3, 0x3e, 0xa3,
};

static unsigned char kek_data_4[] = {
	0xfa, 0x01, 0x66, 0x16, 0x6e, 0x30, 0x81, 0x1f,
	0x1b, 0xaa, 0xff, 0x8d, 0x1c, 0x1a, 0xc1, 0x63,
};

static unsigned char tk_data_4[] = {
	0x82, 0xa4, 0x9b, 0x50, 0xb8, 0x60, 0x88, 0xc5,
	0xcb, 0x79, 0x3b, 0x54, 0x26, 0x61, 0xa2, 0x8a,
        0x64, 0x69, 0x3c, 0x72, 0xb8, 0x66, 0x73, 0xe0,
	0xa8, 0x2d, 0x48, 0xc7, 0x47, 0x68, 0xcb, 0xf9,
};

static const struct ptk_data ptk_test_4 = {
	.pmk = pmk_data_4,
	.aa = aa_data_4,
	.spa = spa_data_4,
	.snonce = snonce_data_4,
	.anonce = anonce_data_4,
	.cipher = CRYPTO_CIPHER_TKIP,
	.kck = kck_data_4,
	.kek = kek_data_4,
	.tk = tk_data_4,
};

static void ptk_test(const void *data)
{
	const struct ptk_data *test = data;
	uint8_t *ptk;
	size_t ptk_len;
	bool ret;

	ptk_len = 32 + crypto_cipher_key_len(test->cipher);

	ptk = l_malloc(ptk_len);

	ret = crypto_derive_pairwise_ptk(test->pmk, 32, test->aa,
					test->spa, test->anonce, test->snonce,
					ptk, ptk_len, L_CHECKSUM_SHA1);

	assert(ret);

	if (test->kck)
		assert(!memcmp(test->kck, ptk, 16));

	if (test->kek)
		assert(!memcmp(test->kek, ptk + 16, 16));

	if (test->tk)
		assert(!memcmp(test->tk, ptk + 32,
				crypto_cipher_key_len(test->cipher)));

	l_free(ptk);
}

static void aes_wrap_test(const void *data)
{
	/* RFC3394 section 4.1 test vector */
	static const uint8_t kek[16] = {
		0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
		0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
	};
	static const uint8_t key_data[16] = {
		0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
		0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff,
	};
	static const uint8_t ciphertext[24] = {
		0x1f, 0xa6, 0x8b, 0x0a, 0x81, 0x12, 0xb4, 0x47,
		0xae, 0xf3, 0x4b, 0xd8, 0xfb, 0x5a, 0x7b, 0x82,
		0x9d, 0x3e, 0x86, 0x23, 0x71, 0xd2, 0xcf, 0xe5,
	};
	uint8_t buf[24];

	memcpy(buf, key_data, sizeof(key_data));
	assert(aes_wrap(kek, buf, sizeof(key_data), buf));
	assert(!memcmp(buf, ciphertext, sizeof(ciphertext)));

	buf[10] = 10;
	assert(!aes_unwrap(kek, 16, buf, sizeof(ciphertext), buf));

	memcpy(buf, ciphertext, sizeof(ciphertext));
	assert(aes_unwrap(kek, 16, buf, sizeof(ciphertext), buf));
	assert(!memcmp(buf, key_data, sizeof(key_data)));
}

static void aes_siv_test(const void *data)
{
	/* RFC5297 Appendix A.1 Test Vectors */
	const uint8_t key[] = {
		0xff, 0xfe, 0xfd, 0xfc, 0xfb, 0xfa, 0xf9, 0xf8, 0xf7, 0xf6,
		0xf5, 0xf4, 0xf3, 0xf2, 0xf1, 0xf0, 0xf0, 0xf1, 0xf2, 0xf3,
		0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd,
		0xfe, 0xff
	};
	const uint8_t ad[] = {
		0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19,
		0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23,
		0x24, 0x25, 0x26, 0x27
	};
	const uint8_t plaintext[] = {
		0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa,
		0xbb, 0xcc, 0xdd, 0xee
	};
	const uint8_t encrypted[] = {
		0x85, 0x63, 0x2d, 0x07, 0xc6, 0xe8, 0xf3, 0x7f, 0x95, 0x0a,
		0xcd, 0x32, 0x0a, 0x2e, 0xcc, 0x93, 0x40, 0xc0, 0x2b, 0x96,
		0x90, 0xc4, 0xdc, 0x04, 0xda, 0xef, 0x7f, 0x6a, 0xfe, 0x5c
	};
	struct iovec iov[1];
	uint8_t outbuf[sizeof(plaintext) + 16];
	uint8_t decrypted[sizeof(plaintext)];

	iov[0].iov_base = (void *)ad;
	iov[0].iov_len = sizeof(ad);

	assert(aes_siv_encrypt(key, sizeof(key), plaintext, sizeof(plaintext),
				iov, 1, outbuf));
	assert(memcmp(outbuf, encrypted, sizeof(outbuf)) == 0);

	assert(aes_siv_decrypt(key, sizeof(key), encrypted, sizeof(encrypted), iov, 1,
				decrypted));
	assert(memcmp(decrypted, plaintext, sizeof(decrypted)) == 0);
}

static bool test_precheck(const void *data)
{
	return (l_cipher_is_supported(L_CIPHER_AES) &&
		l_checksum_is_supported(L_CHECKSUM_SHA1, true));
}

#define add_test(name, func, data) l_test_add_data_func_precheck(name, data, \
							func, test_precheck, 0)
int main(int argc, char *argv[])
{
	l_test_init(&argc, &argv);

	add_test("/Passphrase Generator/PSK Test Case 1",
						psk_test, &psk_test_case_1);
	add_test("/Passphrase Generator/PSK Test Case 2",
						psk_test, &psk_test_case_2);
	add_test("/Passphrase Generator/PSK Test Case 3",
						psk_test, &psk_test_case_3);

	add_test("/PTK Derivation/PTK Test Case 1", ptk_test, &ptk_test_1);
	add_test("/PTK Derivation/PTK Test Case 2", ptk_test, &ptk_test_2);
	add_test("/PTK Derivation/PTK Test Case 3", ptk_test, &ptk_test_3);
	add_test("/PTK Derivation/PTK Test Case 4", ptk_test, &ptk_test_4);

	add_test("/AES Key-wrap/Wrap & unwrap", aes_wrap_test, NULL);
	add_test("/AES-SIV", aes_siv_test, NULL);

	return l_test_run();
}