/* main-dsa-test.c */
/*
    This file is part of the ARM-Crypto-Lib.
    Copyright (C) 2010 Daniel Otte (daniel.otte@rub.de)

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
/*
 * DSA test-suit
 *
*/
#include "main-test-common.h"

#include "noekeon.h"
#include "noekeon_prng.h"
#include "bigint.h"
#include "bigint_io.h"
#include "random_dummy.h"
#include "rsa_basic.h"
#include "rsa_pkcs15.h"

#include "performance_test.h"

const char* algo_name = "RSA";

/*****************************************************************************
 *  additional validation-functions											 *
 *****************************************************************************/

const uint8_t modulus[] = {
	0xa8, 0xb3, 0xb2, 0x84, 0xaf, 0x8e, 0xb5, 0x0b, 0x38, 0x70, 0x34, 0xa8, 0x60, 0xf1, 0x46, 0xc4,
	0x91, 0x9f, 0x31, 0x87, 0x63, 0xcd, 0x6c, 0x55, 0x98, 0xc8, 0xae, 0x48, 0x11, 0xa1, 0xe0, 0xab,
	0xc4, 0xc7, 0xe0, 0xb0, 0x82, 0xd6, 0x93, 0xa5, 0xe7, 0xfc, 0xed, 0x67, 0x5c, 0xf4, 0x66, 0x85,
	0x12, 0x77, 0x2c, 0x0c, 0xbc, 0x64, 0xa7, 0x42, 0xc6, 0xc6, 0x30, 0xf5, 0x33, 0xc8, 0xcc, 0x72,
	0xf6, 0x2a, 0xe8, 0x33, 0xc4, 0x0b, 0xf2, 0x58, 0x42, 0xe9, 0x84, 0xbb, 0x78, 0xbd, 0xbf, 0x97,
	0xc0, 0x10, 0x7d, 0x55, 0xbd, 0xb6, 0x62, 0xf5, 0xc4, 0xe0, 0xfa, 0xb9, 0x84, 0x5c, 0xb5, 0x14,
	0x8e, 0xf7, 0x39, 0x2d, 0xd3, 0xaa, 0xff, 0x93, 0xae, 0x1e, 0x6b, 0x66, 0x7b, 0xb3, 0xd4, 0x24,
	0x76, 0x16, 0xd4, 0xf5, 0xba, 0x10, 0xd4, 0xcf, 0xd2, 0x26, 0xde, 0x88, 0xd3, 0x9f, 0x16, 0xfb
};

const uint8_t public_exponent[] = {
	0x00, 0x01, 0x00, 0x01
};

const uint8_t private_exponent[] = {
	0x53, 0x33, 0x9c, 0xfd, 0xb7, 0x9f, 0xc8, 0x46, 0x6a, 0x65, 0x5c, 0x73, 0x16, 0xac, 0xa8, 0x5c,
	0x55, 0xfd, 0x8f, 0x6d, 0xd8, 0x98, 0xfd, 0xaf, 0x11, 0x95, 0x17, 0xef, 0x4f, 0x52, 0xe8, 0xfd,
	0x8e, 0x25, 0x8d, 0xf9, 0x3f, 0xee, 0x18, 0x0f, 0xa0, 0xe4, 0xab, 0x29, 0x69, 0x3c, 0xd8, 0x3b,
	0x15, 0x2a, 0x55, 0x3d, 0x4a, 0xc4, 0xd1, 0x81, 0x2b, 0x8b, 0x9f, 0xa5, 0xaf, 0x0e, 0x7f, 0x55,
	0xfe, 0x73, 0x04, 0xdf, 0x41, 0x57, 0x09, 0x26, 0xf3, 0x31, 0x1f, 0x15, 0xc4, 0xd6, 0x5a, 0x73,
	0x2c, 0x48, 0x31, 0x16, 0xee, 0x3d, 0x3d, 0x2d, 0x0a, 0xf3, 0x54, 0x9a, 0xd9, 0xbf, 0x7c, 0xbf,
	0xb7, 0x8a, 0xd8, 0x84, 0xf8, 0x4d, 0x5b, 0xeb, 0x04, 0x72, 0x4d, 0xc7, 0x36, 0x9b, 0x31, 0xde,
	0xf3, 0x7d, 0x0c, 0xf5, 0x39, 0xe9, 0xcf, 0xcd, 0xd3, 0xde, 0x65, 0x37, 0x29, 0xea, 0xd5, 0xd1
};
/*
# PKCS#1 v1.5 encryption of 20 random messages with random seeds
# ---------------------------------------------------------------------------
*/

const uint8_t message[] = {
	0x66, 0x28, 0x19, 0x4e, 0x12, 0x07, 0x3d, 0xb0, 0x3b, 0xa9, 0x4c, 0xda, 0x9e, 0xf9, 0x53, 0x23,
	0x97, 0xd5, 0x0d, 0xba, 0x79, 0xb9, 0x87, 0x00, 0x4a, 0xfe, 0xfe, 0x34
};

const uint8_t seed[] = {
	0x01, 0x73, 0x41, 0xae, 0x38, 0x75, 0xd5, 0xf8, 0x71, 0x01, 0xf8, 0xcc, 0x4f, 0xa9, 0xb9, 0xbc,
	0x15, 0x6b, 0xb0, 0x46, 0x28, 0xfc, 0xcd, 0xb2, 0xf4, 0xf1, 0x1e, 0x90, 0x5b, 0xd3, 0xa1, 0x55,
	0xd3, 0x76, 0xf5, 0x93, 0xbd, 0x73, 0x04, 0x21, 0x08, 0x74, 0xeb, 0xa0, 0x8a, 0x5e, 0x22, 0xbc,
	0xcc, 0xb4, 0xc9, 0xd3, 0x88, 0x2a, 0x93, 0xa5, 0x4d, 0xb0, 0x22, 0xf5, 0x03, 0xd1, 0x63, 0x38,
	0xb6, 0xb7, 0xce, 0x16, 0xdc, 0x7f, 0x4b, 0xbf, 0x9a, 0x96, 0xb5, 0x97, 0x72, 0xd6, 0x60, 0x6e,
	0x97, 0x47, 0xc7, 0x64, 0x9b, 0xf9, 0xe0, 0x83, 0xdb, 0x98, 0x18, 0x84, 0xa9, 0x54, 0xab, 0x3c,
	0x6f
};

const uint8_t encrypted[] = {
	0x50, 0xb4, 0xc1, 0x41, 0x36, 0xbd, 0x19, 0x8c, 0x2f, 0x3c, 0x3e, 0xd2, 0x43, 0xfc, 0xe0, 0x36,
	0xe1, 0x68, 0xd5, 0x65, 0x17, 0x98, 0x4a, 0x26, 0x3c, 0xd6, 0x64, 0x92, 0xb8, 0x08, 0x04, 0xf1,
	0x69, 0xd2, 0x10, 0xf2, 0xb9, 0xbd, 0xfb, 0x48, 0xb1, 0x2f, 0x9e, 0xa0, 0x50, 0x09, 0xc7, 0x7d,
	0xa2, 0x57, 0xcc, 0x60, 0x0c, 0xce, 0xfe, 0x3a, 0x62, 0x83, 0x78, 0x9d, 0x8e, 0xa0, 0xe6, 0x07,
	0xac, 0x58, 0xe2, 0x69, 0x0e, 0xc4, 0xeb, 0xc1, 0x01, 0x46, 0xe8, 0xcb, 0xaa, 0x5e, 0xd4, 0xd5,
	0xcc, 0xe6, 0xfe, 0x7b, 0x0f, 0xf9, 0xef, 0xc1, 0xea, 0xbb, 0x56, 0x4d, 0xbf, 0x49, 0x82, 0x85,
	0xf4, 0x49, 0xee, 0x61, 0xdd, 0x7b, 0x42, 0xee, 0x5b, 0x58, 0x92, 0xcb, 0x90, 0x60, 0x1f, 0x30,
	0xcd, 0xa0, 0x7b, 0xf2, 0x64, 0x89, 0x31, 0x0b, 0xcd, 0x23, 0xb5, 0x28, 0xce, 0xab, 0x3c, 0x31
};

rsa_publickey_t pub_key;
rsa_privatekey_t priv_key;

void load_fix_rsa(void){
	bigint_t *m, *epub, *epriv;
	m = malloc(sizeof(bigint_t));
	epub = malloc(sizeof(bigint_t));
	epriv = malloc(sizeof(bigint_t));
	if(!m || !epub || !epriv){
		cli_putstr("\r\nOOM!\r\n");
		return;
	}

	m->length_B = (sizeof(modulus) + sizeof(bigint_word_t) - 1) / sizeof(bigint_word_t);
	epub->length_B = (sizeof(public_exponent) + sizeof(bigint_word_t) - 1) / sizeof(bigint_word_t);
	epriv->length_B = (sizeof(private_exponent) + sizeof(bigint_word_t) - 1) / sizeof(bigint_word_t);

	m->wordv = malloc(m->length_B * sizeof(bigint_word_t));
	epub->wordv = malloc(epub->length_B * sizeof(bigint_word_t));
	epriv->wordv =  malloc(epriv->length_B * sizeof(bigint_word_t));

	if(!m->wordv || !epub->wordv || !epriv->wordv){
		cli_putstr("\r\nOOM!\r\n");
		return;
	}

	memcpy(m->wordv, modulus, sizeof(modulus));
	memcpy(epub->wordv, public_exponent, sizeof(public_exponent));
	memcpy(epriv->wordv, private_exponent, sizeof(private_exponent));

	pub_key.modulus = priv_key.modulus = m;
	pub_key.exponent = epub;
	priv_key.exponent = epriv;

	bigint_changeendianess(m);
	bigint_adjust(m);
	bigint_changeendianess(epub);
	bigint_adjust(epub);
	bigint_changeendianess(epriv);
	bigint_adjust(epriv);

}

void quick_test(void){
	uint8_t *ciphertext, *plaintext, rc;
	uint16_t clen, plen;
	ciphertext = malloc(clen = pub_key.modulus->length_B * sizeof(bigint_word_t));
	plaintext = malloc(pub_key.modulus->length_B * sizeof(bigint_word_t));
	memcpy(ciphertext, message, sizeof(message));
	cli_putstr("\r\nplaintext:\r\n");
	cli_hexdump_block(ciphertext, sizeof(message), 4, 8);
	rc = rsa_encrypt_pkcs15(ciphertext, &clen, message, sizeof(message), &pub_key, seed);
	if(rc){
		cli_putstr("\r\nERROR: rsa_encrypt_pkcs15 returned: ");
		cli_hexdump_byte(rc);
		return;
	}
	cli_putstr("\r\nciphertext:\r\n");
	cli_hexdump_block(ciphertext, clen, 4, 8);
	rc = rsa_decrypt_pkcs15(plaintext, &plen, ciphertext, clen, &priv_key, NULL);
	if(rc){
		cli_putstr("\r\nERROR: rsa_encrypt_pkcs15 returned: ");
		cli_hexdump_byte(rc);
		return;
	}
	cli_putstr("\r\nplaintext:\r\n");
	cli_hexdump_block(plaintext, plen, 4, 8);
	free(ciphertext);
	free(plaintext);
}

void reset_prng(void){
	uint8_t buf[16];
	memset(buf, 0, 16);
	random_seed(buf);
	cli_putstr("\r\nPRNG reset");
}

void rsa_init(void){
	load_fix_rsa();
	prng_get_byte = random8;
}

/*****************************************************************************
 *  main																	 *
 *****************************************************************************/

const char echo_test_str[]     = "echo-test";
const char reset_prng_str[]    = "reset-prng";
const char quick_test_str[]    = "quick-test";
const char performance_str[]   = "performance";
const char echo_str[]          = "echo";

cmdlist_entry_t cmdlist[] = {
	{ reset_prng_str,       NULL, reset_prng                    },
	{ quick_test_str,       NULL, quick_test                    },
//	{ performance_str,      NULL, testrun_performance_bigint    },
	{ echo_str,         (void*)1, (void_fpt)echo_ctrl           },
	{ NULL,                 NULL, NULL                          }
};

void dump_sp(void){
	uint8_t x;
	uint8_t *xa = &x;
	cli_putstr("\r\nstack pointer: ~");
	cli_hexdump_rev(&xa, 4);
}

int main (void){
	main_setup();

	for(;;){
		welcome_msg(algo_name);
		rsa_init();
		cmd_interface(cmdlist);
	}
}