[proxmark3-svn] / armsrc / mifareutil.c

//-----------------------------------------------------------------------------\r
// Merlok, May 2011, 2012\r
// Many authors, whom made it possible\r
//\r
// This code is licensed to you under the terms of the GNU GPL, version 2 or,\r
// at your option, any later version. See the LICENSE.txt file for the text of\r
// the license.\r
//-----------------------------------------------------------------------------\r
// Work with mifare cards.\r
//-----------------------------------------------------------------------------\r
#include "mifareutil.h"\r
\r
int MF_DBGLEVEL = MF_DBG_ALL;\r
\r
// crypto1 helpers\r
void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){\r
	uint8_t	bt = 0;\r
	int i;\r
	\r
	if (len != 1) {\r
		for (i = 0; i < len; i++)\r
			data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];\r
	} else {\r
		bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 0)) << 0;\r
		bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 1)) << 1;\r
		bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 2)) << 2;\r
		bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 3)) << 3;\r
		data[0] = bt;\r
	}\r
	return;\r
}\r
\r
void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {\r
	uint8_t bt = 0;\r
	int i;\r
	par[0] = 0;\r
	\r
	for (i = 0; i < len; i++) {\r
		bt = data[i];\r
		data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];\r
		if ( ( i & 0x0007 ) == 0) \r
			par[ i >> 3 ] = 0;\r
		par[ i >> 3 ] |= (((filter(pcs->odd) ^ oddparity8(bt)) & 0x01)<<(7-(i&0x0007)));\r
	}	\r
}\r
\r
uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {\r
	uint8_t bt = 0;\r
	bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 0)) << 0;\r
	bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 1)) << 1;\r
	bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 2)) << 2;\r
	bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 3)) << 3;\r
	return bt;\r
}\r
\r
// send X byte basic commands\r
int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing) {\r
	uint8_t dcmd[data_size+3];\r
    dcmd[0] = cmd;\r
	memcpy(dcmd+1, data, data_size);\r
	AppendCrc14443a(dcmd, data_size+1);\r
	ReaderTransmit(dcmd, sizeof(dcmd), timing);\r
	int len = ReaderReceive(answer, answer_parity);\r
	if(!len) {\r
		if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
			Dbprintf("%02X Cmd failed. Card timeout.", cmd);\r
		len = ReaderReceive(answer,answer_parity);\r
    }\r
	return len;\r
}\r
\r
// send 2 byte commands\r
int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing) {\r
	uint16_t pos, res;\r
	uint8_t dcmd[4] = {cmd, data, 0x00, 0x00};\r
	uint8_t	ecmd[4] = {0x00, 0x00, 0x00, 0x00};\r
	uint8_t par[1] = {0x00};			// 1 Byte parity is enough here\r
	AppendCrc14443a(dcmd, 2);\r
	memcpy(ecmd, dcmd, sizeof(dcmd));\r
	\r
	if (crypted) {\r
		par[0] = 0;\r
		for (pos = 0; pos < 4; pos++) {\r
			ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];\r
			par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos));\r
		}	\r
		ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);\r
	} else {\r
		ReaderTransmit(dcmd, sizeof(dcmd), timing);\r
	}\r
\r
	int len = ReaderReceive(answer, par);\r
	\r
	if (answer_parity) *answer_parity = par[0];\r
	\r
	if (crypted == CRYPT_ALL) {\r
		if (len == 1) {\r
			res = 0;\r
			res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 0)) << 0;\r
			res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 1)) << 1;\r
			res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 2)) << 2;\r
			res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 3)) << 3;\r
			answer[0] = res;			\r
		} else {\r
			for (pos = 0; pos < len; pos++)\r
				answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];\r
		}\r
	}\r
	return len;\r
}\r
\r
// mifare classic commands\r
int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested) {\r
	return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);\r
}\r
\r
int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested, uint32_t *ntptr, uint32_t *timing) {\r
	int len;	\r
	uint32_t pos;\r
	uint8_t par[1] = {0x00};\r
\r
	// "random" reader nonce:\r
	//byte_t nr[4] = {0x55, 0x41, 0x49, 0x92};\r
	byte_t nr[4] = {0x01, 0x01, 0x01, 0x01};\r
	\r
	uint32_t nt, ntpp; // Supplied tag nonce\r
	\r
	uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };\r
	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};\r
	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};\r
	\r
	// Transmit MIFARE_CLASSIC_AUTH\r
	len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);\r
	if (MF_DBGLEVEL >= 4)	Dbprintf("rand tag nonce len: %x", len);  \r
	if (len != 4) return 1;\r
	\r
	// Save the tag nonce (nt)\r
	nt = bytes_to_num(receivedAnswer, 4);\r
\r
	//  ----------------------------- crypto1 create\r
	if (isNested)\r
		crypto1_destroy(pcs);\r
\r
	// Init cipher with key\r
	crypto1_create(pcs, ui64Key);\r
\r
	if (isNested == AUTH_NESTED) {\r
		// decrypt nt with help of new key \r
		nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;\r
	} else {\r
		// Load (plain) uid^nt into the cipher\r
		crypto1_word(pcs, nt ^ uid, 0);\r
	}\r
\r
	// some statistic\r
	if (!ntptr && (MF_DBGLEVEL >= 3))\r
		Dbprintf("auth uid: %08x nt: %08x", uid, nt);  \r
	\r
	// save Nt\r
	if (ntptr)\r
		*ntptr = nt;\r
\r
	// Generate (encrypted) nr+parity by loading it into the cipher (Nr)\r
	par[0] = 0;\r
	for (pos = 0; pos < 4; pos++) {\r
		mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];\r
		par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));\r
	}	\r
		\r
	// Skip 32 bits in pseudo random generator\r
	nt = prng_successor(nt, 32);\r
\r
	//  ar+parity\r
	for (pos = 4; pos < 8; pos++) {\r
		nt = prng_successor(nt,8);\r
		mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);\r
		par[0] |= (((filter(pcs->odd) ^ oddparity8(nt & 0xff)) & 0x01) << (7-pos));\r
	}	\r
		\r
	// Transmit reader nonce and reader answer\r
	ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);\r
\r
	// Receive 4 byte tag answer\r
	len = ReaderReceive(receivedAnswer, receivedAnswerPar);\r
	if (!len) {\r
		if (MF_DBGLEVEL >= 1)	Dbprintf("Authentication failed. Card timeout.");\r
		return 2;\r
	}\r
\r
	ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);\r
\r
	if (ntpp != bytes_to_num(receivedAnswer, 4)) {\r
		if (MF_DBGLEVEL >= 1)	Dbprintf("Authentication failed. Error card response.");\r
		return 3;\r
	}\r
	return 0;\r
}\r
\r
int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) {\r
\r
	int len;	\r
	uint8_t	bt[2] = {0x00, 0x00};	\r
	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};\r
	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};\r
	\r
	len = mifare_sendcmd_short(pcs, 1, ISO14443A_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r
	if (len == 1) {\r
		if (MF_DBGLEVEL >= 1)	Dbprintf("Cmd Error: %02x", receivedAnswer[0]);  \r
		return 1;\r
	}\r
	if (len != 18) {\r
		if (MF_DBGLEVEL >= 1)	Dbprintf("Cmd Error: card timeout. len: %x", len);  \r
		return 2;\r
	}\r
\r
	memcpy(bt, receivedAnswer + 16, 2);\r
	AppendCrc14443a(receivedAnswer, 16);\r
	if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {\r
		if (MF_DBGLEVEL >= 1)	Dbprintf("Cmd CRC response error.");  \r
		return 3;\r
	}\r
	\r
	memcpy(blockData, receivedAnswer, 16);\r
	return 0;\r
}\r
\r
// mifare ultralight commands\r
int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){\r
\r
	uint16_t len = 0;\r
	uint8_t resp[4] = {0x00, 0x00, 0x00, 0x00};\r
	uint8_t respPar[1] = {0x00};\r
	uint8_t key[4] = {0x00, 0x00, 0x00, 0x00};\r
	memcpy(key, keybytes, 4);\r
\r
	if (MF_DBGLEVEL >= MF_DBG_EXTENDED)\r
		Dbprintf("EV1 Auth : %02x%02x%02x%02x",	key[0], key[1], key[2], key[3]);\r
	\r
	len = mifare_sendcmd(0x1B, key, sizeof(key), resp, respPar, NULL);\r
\r
	if (len != 4) {\r
		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);\r
		return 0;\r
	}\r
\r
	if (MF_DBGLEVEL >= MF_DBG_EXTENDED)\r
		Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);\r
\r
	memcpy(pack, resp, 4);\r
	return 1;\r
}\r
\r
int mifare_ultra_auth(uint8_t *keybytes){\r
\r
	/// 3des2k\r
	uint8_t random_a[8] = {1,1,1,1,1,1,1,1};\r
	uint8_t random_b[8] = {0x00};\r
	uint8_t enc_random_b[8] = {0x00};\r
	uint8_t rnd_ab[16] = {0x00};\r
	uint8_t IV[8] = {0x00};\r
	uint8_t key[16] = {0x00};\r
	memcpy(key, keybytes, 16);\r
\r
	uint16_t len = 0;\r
	uint8_t resp[19] = {0x00};\r
	uint8_t respPar[3] = {0,0,0};\r
\r
	// REQUEST AUTHENTICATION\r
	len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, resp, respPar ,NULL);\r
	if (len != 11) {\r
		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);\r
		return 0;\r
	}\r
\r
	// tag nonce.\r
	memcpy(enc_random_b,resp+1,8);\r
\r
	// decrypt nonce.\r
	tdes_2key_dec((void*)random_b, (void*)enc_random_b, sizeof(random_b), (const void*)key, IV );\r
	rol(random_b,8);\r
	memcpy(rnd_ab  ,random_a,8);\r
	memcpy(rnd_ab+8,random_b,8);\r
\r
	if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {\r
		Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",\r
			enc_random_b[0],enc_random_b[1],enc_random_b[2],enc_random_b[3],enc_random_b[4],enc_random_b[5],enc_random_b[6],enc_random_b[7]);\r
\r
		Dbprintf("    B: %02x %02x %02x %02x %02x %02x %02x %02x",\r
			random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);\r
\r
		Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",\r
				rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);\r
\r
		Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",\r
				rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );\r
	}\r
\r
	// encrypt    out, in, length, key, iv\r
	tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);\r
\r
	len = mifare_sendcmd(0xAF, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL);\r
	if (len != 11) {\r
		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);\r
		return 0;\r
	}\r
\r
	uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };\r
	uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };\r
	memcpy(enc_resp, resp+1, 8);\r
\r
	// decrypt    out, in, length, key, iv \r
	tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);\r
	if ( memcmp(resp_random_a, random_a, 8) != 0 ) {\r
		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");\r
		return 0;\r
	}\r
\r
	if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {\r
		Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x", \r
				rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],\r
				rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);\r
\r
		Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",\r
				rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],\r
				rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);\r
\r
		Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",\r
				random_a[0],random_a[1],random_a[2],random_a[3],\r
				random_a[4],random_a[5],random_a[6],random_a[7]);\r
\r
		Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",\r
				resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],\r
				resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);\r
	}\r
	return 1;\r
}\r
\r
int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData) {\r
	uint16_t len = 0;\r
	uint8_t	bt[2] = {0x00, 0x00};\r
	uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};\r
	uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};\r
	\r
	len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r
	if (len == 1) {\r
		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);\r
		return 1;\r
	}\r
	if (len != 18) {\r
		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);\r
		return 2;\r
	}\r
    \r
	memcpy(bt, receivedAnswer + 16, 2);\r
	AppendCrc14443a(receivedAnswer, 16);\r
	if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {\r
		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");\r
		return 3;\r
	}\r
	\r
	memcpy(blockData, receivedAnswer, 14);\r
	return 0;\r
}\r
\r
int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) {\r
	// variables\r
	uint16_t len = 0;	\r
	uint32_t pos = 0;\r
	uint8_t par[3] = {0x00, 0x00, 0x00}; // enough for 18 Bytes to send\r
	byte_t res = 0;\r
	\r
	uint8_t d_block[18], d_block_enc[18];\r
	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};\r
	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};\r
	\r
	// command MIFARE_CLASSIC_WRITEBLOCK\r
	len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r
\r
	if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK\r
		if (MF_DBGLEVEL >= 1)	Dbprintf("Cmd Error: %02x", receivedAnswer[0]);  \r
		return 1;\r
	}\r
	\r
	memcpy(d_block, blockData, 16);\r
	AppendCrc14443a(d_block, 16);\r
	\r
	// crypto\r
	for (pos = 0; pos < 18; pos++) {\r
		d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];\r
		par[pos>>3] |= (((filter(pcs->odd) ^ oddparity8(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));\r
	}	\r
\r
	ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);\r
\r
	// Receive the response\r
	len = ReaderReceive(receivedAnswer, receivedAnswerPar);	\r
\r
	res = 0;\r
	res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 0)) << 0;\r
	res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 1)) << 1;\r
	res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 2)) << 2;\r
	res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 3)) << 3;\r
\r
	if ((len != 1) || (res != 0x0A)) {\r
		if (MF_DBGLEVEL >= 1)	Dbprintf("Cmd send data2 Error: %02x", res);  \r
		return 2;\r
	}\r
	return 0;\r
}\r
\r
/* // command not needed, but left for future testing\r
int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData) {\r
	uint16_t len;\r
    uint8_t par[3] = {0};  // enough for 18 parity bits\r
	uint8_t d_block[18] = {0x00};\r
	uint8_t receivedAnswer[MAX_FRAME_SIZE];\r
	uint8_t receivedAnswerPar[MAX_PARITY_SIZE];\r
\r
    len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r
\r
    if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK\r
		if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
			Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);\r
        return 1;\r
    }\r
\r
	memcpy(d_block, blockData, 16);\r
    AppendCrc14443a(d_block, 16);\r
\r
	ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);\r
\r
	len = ReaderReceive(receivedAnswer, receivedAnswerPar);\r
\r
	if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK\r
		if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
			Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);\r
        return 2;\r
	}\r
    return 0;\r
}\r
*/\r
\r
int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData) {\r
    uint16_t len = 0;\r
	uint8_t block[5] = {blockNo, 0x00, 0x00, 0x00, 0x00 };\r
	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};\r
	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};\r
\r
    // command MIFARE_CLASSIC_WRITEBLOCK\r
	memcpy(block+1, blockData, 4);\r
\r
	len = mifare_sendcmd( MIFARE_ULC_WRITE, block, sizeof(block), receivedAnswer, receivedAnswerPar, NULL);\r
\r
    if (receivedAnswer[0] != 0x0A) {   //  0x0a - ACK\r
		if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
			Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);\r
        return 1;\r
    }\r
    return 0;\r
}\r
int mifare_classic_halt_ex(struct Crypto1State *pcs) {\r
	uint8_t receivedAnswer[4] = {0x00, 0x00, 0x00, 0x00};\r
	uint16_t len = mifare_sendcmd_short(pcs, (pcs == NULL) ? CRYPT_NONE : CRYPT_ALL, 0x50, 0x00, receivedAnswer, NULL, NULL);\r
	if (len != 0) {\r
		if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("halt warning. response len: %x", len);\r
		return 1;\r
	}\r
	return 0;\r
}\r
int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) {\r
	return mifare_classic_halt_ex(pcs);\r
}\r
\r
int mifare_ultra_halt() {\r
	uint16_t len = 0;\r
	uint8_t receivedAnswer[4] = {0x00, 0x00, 0x00, 0x00};\r
 	len = mifare_sendcmd_short(NULL, CRYPT_NONE, 0x50, 0x00, receivedAnswer, NULL, NULL);\r
	if (len != 0) {\r
		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("halt error. response len: %x", len);\r
		return 1;\r
	}\r
	return 0;\r
}\r
\r
\r
// Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),\r
// plus evtl. 8 sectors with 16 blocks each (4k cards)\r
uint8_t NumBlocksPerSector(uint8_t sectorNo) {\r
	return (sectorNo < 32) ? 4 : 16;\r
}\r
\r
uint8_t FirstBlockOfSector(uint8_t sectorNo) {\r
	if (sectorNo < 32)\r
		return sectorNo * 4;\r
	else\r
		return 32*4 + (sectorNo - 32) * 16;\r
		\r
}\r
\r
// work with emulator memory\r
void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {\r
	emlSetMem_xt(data, blockNum, blocksCount, 16);\r
}\r
\r
void emlSetMem_xt(uint8_t *data, int blockNum, int blocksCount, int blockBtWidth) {\r
	uint8_t* emCARD = BigBuf_get_EM_addr();\r
	memcpy(emCARD + blockNum * blockBtWidth, data, blocksCount * blockBtWidth);\r
}\r
\r
void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {\r
	uint8_t* emCARD = BigBuf_get_EM_addr();\r
	memcpy(data, emCARD + blockNum * 16, blocksCount * 16);\r
}\r
\r
void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {\r
	uint8_t* emCARD = BigBuf_get_EM_addr();\r
	memcpy(data, emCARD + bytePtr, byteCount);\r
}\r
\r
int emlCheckValBl(int blockNum) {\r
	uint8_t* emCARD = BigBuf_get_EM_addr();\r
	uint8_t* data = emCARD + blockNum * 16;\r
\r
	if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||\r
			(data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||\r
			(data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||\r
			(data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||\r
			(data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||\r
			(data[12] != (data[15] ^ 0xff))\r
		 ) \r
		return 1;\r
	return 0;\r
}\r
\r
int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {\r
	uint8_t* emCARD = BigBuf_get_EM_addr();\r
	uint8_t* data = emCARD + blockNum * 16;\r
	\r
	if (emlCheckValBl(blockNum))\r
		return 1;\r
	\r
	memcpy(blReg, data, 4);\r
	*blBlock = data[12];\r
	return 0;\r
}\r
\r
int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {\r
	uint8_t* emCARD = BigBuf_get_EM_addr();\r
	uint8_t* data = emCARD + blockNum * 16;\r
	\r
	memcpy(data + 0, &blReg, 4);\r
	memcpy(data + 8, &blReg, 4);\r
	blReg = blReg ^ 0xffffffff;\r
	memcpy(data + 4, &blReg, 4);\r
	\r
	data[12] = blBlock;\r
	data[13] = blBlock ^ 0xff;\r
	data[14] = blBlock;\r
	data[15] = blBlock ^ 0xff;\r
	\r
	return 0;\r
}\r
\r
uint64_t emlGetKey(int sectorNum, int keyType) {\r
	uint8_t key[6] = {0x00};\r
	uint8_t* emCARD = BigBuf_get_EM_addr();\r
	\r
	memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);\r
	return bytes_to_num(key, 6);\r
}\r
\r
void emlClearMem(void) {\r
	int b;\r
	\r
	const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};\r
	const uint8_t uid[]   =   {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};\r
	uint8_t* emCARD = BigBuf_get_EM_addr();\r
	\r
	memset(emCARD, 0, CARD_MEMORY_SIZE);\r
	\r
	// fill sectors trailer data\r
	for(b = 3; b < 256; b<127?(b+=4):(b+=16))\r
		emlSetMem((uint8_t *)trailer, b , 1);\r
\r
	// uid\r
	emlSetMem((uint8_t *)uid, 0, 1);\r
	return;\r
}\r
\r
\r
// Mifare desfire commands\r
int mifare_sendcmd_special(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)\r
{\r
    uint8_t dcmd[5] = {cmd, data[0], data[1], 0x00, 0x00};\r
	AppendCrc14443a(dcmd, 3);\r
	\r
	ReaderTransmit(dcmd, sizeof(dcmd), NULL);\r
	int len = ReaderReceive(answer, answer_parity);\r
	if(!len) {\r
		if (MF_DBGLEVEL >= MF_DBG_ERROR) \r
			Dbprintf("Authentication failed. Card timeout.");\r
		return 1;\r
    }\r
	return len;\r
}\r
\r
int mifare_sendcmd_special2(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer,uint8_t *answer_parity, uint32_t *timing)\r
{\r
    uint8_t dcmd[20] = {0x00};\r
    dcmd[0] = cmd;\r
    memcpy(dcmd+1,data,17);\r
	AppendCrc14443a(dcmd, 18);\r
\r
	ReaderTransmit(dcmd, sizeof(dcmd), NULL);\r
	int len = ReaderReceive(answer, answer_parity);\r
	if(!len){\r
        if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
			Dbprintf("Authentication failed. Card timeout.");\r
		return 1;\r
    }\r
	return len;\r
}\r
\r
int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){\r
\r
	int len;\r
	// load key, keynumber\r
	uint8_t data[2]={0x0a, 0x00};\r
	uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};\r
	uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};\r
	\r
	len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);\r
	if (len == 1) {\r
		if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
			Dbprintf("Cmd Error: %02x", receivedAnswer[0]);\r
		return 1;\r
	}\r
	\r
	if (len == 12) {\r
		if (MF_DBGLEVEL >= MF_DBG_EXTENDED)	{\r
			Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",\r
				receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],\r
				receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],\r
				receivedAnswer[10],receivedAnswer[11]);\r
			}\r
			memcpy(blockData, receivedAnswer, 12);\r
	        return 0;\r
	}\r
	return 1;\r
}\r
\r
int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){\r
\r
	int len;\r
	uint8_t data[17] = {0x00};\r
	data[0] = 0xAF;\r
	memcpy(data+1,key,16);\r
	\r
	uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};\r
	uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};\r
	\r
	len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);\r
	\r
	if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {\r
		if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
			Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);\r
		return 1;\r
	}\r
	\r
	if (len == 12){\r
		if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {\r
			Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",\r
				receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],\r
				receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],\r
				receivedAnswer[10],receivedAnswer[11]);\r
			}\r
		memcpy(blockData, receivedAnswer, 12);\r
		return 0;\r
	}\r
	return 1;\r
}\r