Cleanup armsrc/string.c and string.h (#964)

[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
\r
#include "mifareutil.h"\r
\r
#include <string.h>\r
#include <stdbool.h>\r
\r
#include "proxmark3.h"\r
#include "apps.h"\r
#include "util.h"\r
#include "parity.h"\r
#include "iso14443crc.h"\r
#include "iso14443a.h"\r
#include "crapto1/crapto1.h"\r
#include "mbedtls/des.h"\r
#include "protocols.h"\r
\r
int MF_DBGLEVEL = MF_DBG_INFO;\r
\r
// crypto1 helpers\r
void mf_crypto1_decryptEx(struct Crypto1State *pcs, uint8_t *data_in, int len, uint8_t *data_out){\r
	uint8_t bt = 0;\r
	int i;\r
\r
	if (len != 1) {\r
		for (i = 0; i < len; i++)\r
			data_out[i] = crypto1_byte(pcs, 0x00, 0) ^ data_in[i];\r
	} else {\r
		bt = 0;\r
		for (i = 0; i < 4; i++)\r
			bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data_in[0], i)) << i;\r
\r
		data_out[0] = bt;\r
	}\r
	return;\r
}\r
\r
void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){\r
	mf_crypto1_decryptEx(pcs, data, len, data);\r
}\r
\r
void mf_crypto1_encryptEx(struct Crypto1State *pcs, uint8_t *data, uint8_t *in, 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, in==NULL?0x00:in[i], 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
	return;\r
}\r
\r
void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {\r
	mf_crypto1_encryptEx(pcs, data, NULL, len, par);\r
}\r
\r
uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {\r
	uint8_t bt = 0;\r
	int i;\r
\r
	for (i = 0; i < 4; i++)\r
		bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, i)) << i;\r
\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)   Dbprintf("%02X Cmd failed. Card timeout.", cmd);\r
			len = ReaderReceive(answer,answer_parity);\r
		//return 0;\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
	uint8_t dcmd[4], ecmd[4];\r
	uint16_t pos, res;\r
	uint8_t par[1];         // 1 Byte parity is enough here\r
	dcmd[0] = cmd;\r
	dcmd[1] = data;\r
	AppendCrc14443a(dcmd, 2);\r
\r
	memcpy(ecmd, dcmd, sizeof(dcmd));\r
\r
	if (crypted) {\r
		par[0] = 0;\r
		for (pos = 0; pos < 4; pos++)\r
		{\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
			for (pos = 0; pos < 4; pos++)\r
				res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], pos)) << pos;\r
\r
			answer[0] = res;\r
\r
		} else {\r
			for (pos = 0; pos < len; pos++)\r
			{\r
				answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];\r
			}\r
		}\r
	}\r
\r
	return len;\r
}\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, uint32_t *auth_timeout) {\r
\r
	return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL, auth_timeout);\r
}\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, uint32_t *auth_timeout) {\r
\r
	int len;\r
	uint32_t pos;\r
	uint8_t par[1] = {0x00};\r
	byte_t nr[4];\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];\r
	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];\r
\r
	// Transmit MIFARE_CLASSIC_AUTH\r
	len = mifare_sendcmd_short(pcs, isNested, keyType & 0x01 ? MIFARE_AUTH_KEYB : MIFARE_AUTH_KEYA, blockNo, receivedAnswer, receivedAnswerPar, timing);\r
	if (MF_DBGLEVEL >= 4)   Dbprintf("rand tag nonce len: %x", len);\r
	if (len != 4) return 1;\r
\r
	// "random" reader nonce:\r
	nr[0] = 0x55;\r
	nr[1] = 0x41;\r
	nr[2] = 0x49;\r
	nr[3] = 0x92;\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)) & 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
	uint32_t save_timeout = iso14a_get_timeout(); // save standard timeout\r
	if (auth_timeout && *auth_timeout) {\r
		iso14a_set_timeout(*auth_timeout);        // set timeout for authentication response\r
	}\r
	uint32_t auth_timeout_start = GetCountSspClk();\r
	len = ReaderReceive(receivedAnswer, receivedAnswerPar);\r
	iso14a_set_timeout(save_timeout);             // restore standard timeout\r
	if (!len) {\r
		if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Card timeout.");\r
		return 2;\r
	}\r
	if (auth_timeout && !*auth_timeout) {         // measure time for future authentication response timeout\r
		*auth_timeout = (GetCountSspClk() - auth_timeout_start - (len * 9 + 2) * 8) / 8 + 1;\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
\r
	return 0;\r
}\r
\r
\r
int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) {\r
	// variables\r
	int len;\r
	uint8_t bt[2];\r
\r
	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];\r
	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];\r
\r
	// command MIFARE_CLASSIC_READBLOCK\r
	len = mifare_sendcmd_short(pcs, 1, MIFARE_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;\r
	uint8_t resp[4];\r
	uint8_t respPar[1];\r
	uint8_t key[4] = {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
	len = mifare_sendcmd(MIFARE_ULEV1_AUTH, key, sizeof(key), resp, respPar, NULL);\r
	//len = mifare_sendcmd_short_mfuev1auth(NULL, 0, 0x1B, key, resp, respPar, NULL);\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
\r
	mbedtls_des3_context ctx = { {0} };\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;\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, MIFARE_ULC_AUTH_1, 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(random_b, enc_random_b, sizeof(random_b), key, IV );\r
	mbedtls_des3_set2key_dec(&ctx, key);\r
	mbedtls_des3_crypt_cbc(&ctx     // des3_context\r
		, MBEDTLS_DES_DECRYPT       // int mode\r
		, sizeof(random_b)  // length\r
		, IV                // iv[8]\r
		, enc_random_b      // input\r
		, random_b          // output\r
		);\r
\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
	mbedtls_des3_set2key_enc(&ctx, key);\r
	mbedtls_des3_crypt_cbc(&ctx     // des3_context\r
		, MBEDTLS_DES_ENCRYPT       // int mode\r
		, sizeof(rnd_ab)    // length\r
		, enc_random_b      // iv[8]\r
		, rnd_ab            // input\r
		, rnd_ab            // output\r
		);\r
\r
	//len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, resp, respPar, NULL);\r
	len = mifare_sendcmd(MIFARE_ULC_AUTH_2, 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
	mbedtls_des3_set2key_dec(&ctx, key);\r
	mbedtls_des3_crypt_cbc(&ctx     // des3_context\r
		, MBEDTLS_DES_DECRYPT       // int mode\r
		, 8                 // length\r
		, enc_random_b      // iv[8]\r
		, enc_resp          // input\r
		, resp_random_a     // output\r
		);\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
\r
#define MFU_MAX_RETRIES 5\r
int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData)\r
{\r
	uint16_t len;\r
	uint8_t bt[2];\r
	uint8_t receivedAnswer[MAX_FRAME_SIZE];\r
	uint8_t receivedAnswerPar[MAX_PARITY_SIZE];\r
	uint8_t retries;\r
	int result = 0;\r
\r
	for (retries = 0; retries < MFU_MAX_RETRIES; retries++) {\r
		len = mifare_sendcmd_short(NULL, 1, MIFARE_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r
		if (len == 1) {\r
			if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);\r
			result = 1;\r
			continue;\r
		}\r
		if (len != 18) {\r
			if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);\r
			result = 2;\r
			continue;\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
			result = 3;\r
			continue;\r
		}\r
\r
		// No errors encountered; don't retry\r
		result = 0;\r
		break;\r
	}\r
\r
	if (result != 0) {\r
		Dbprintf("Cmd Error: too many retries; read failed");\r
		return result;\r
	}\r
\r
	memcpy(blockData, receivedAnswer, 16);\r
	return 0;\r
}\r
\r
int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)\r
{\r
	// variables\r
	uint16_t len, i;\r
	uint32_t pos;\r
	uint8_t par[3] = {0};       // enough for 18 Bytes to send\r
	byte_t res;\r
\r
	uint8_t d_block[18], d_block_enc[18];\r
	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];\r
	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];\r
\r
	// command MIFARE_CLASSIC_WRITEBLOCK\r
	len = mifare_sendcmd_short(pcs, 1, MIFARE_CMD_WRITEBLOCK, 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
	{\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
	for (i = 0; i < 4; i++)\r
		res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;\r
\r
	if ((len != 1) || (res != 0x0A)) {\r
		if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd send data2 Error: %02x", res);\r
		return 2;\r
	}\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
{\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, MIFARE_CMD_WRITEBLOCK, 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
{\r
	uint16_t len;\r
	uint8_t d_block[5] = {0x00};\r
	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];\r
	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];\r
\r
	// command MIFARE_CLASSIC_WRITEBLOCK\r
	d_block[0]= blockNo;\r
	memcpy(d_block+1,blockData,4);\r
	//AppendCrc14443a(d_block, 6);\r
\r
	len = mifare_sendcmd(0xA2, d_block, sizeof(d_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
\r
int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)\r
{\r
	uint16_t len;\r
	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];\r
	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];\r
\r
	len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, ISO14443A_CMD_HALT, 0x00, receivedAnswer, receivedAnswerPar, NULL);\r
	if (len != 0) {\r
		if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
			Dbprintf("halt error. response len: %x", len);\r
		return 1;\r
	}\r
\r
	return 0;\r
}\r
\r
int mifare_ultra_halt()\r
{\r
	uint16_t len;\r
	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];\r
	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];\r
\r
	len = mifare_sendcmd_short(NULL, true, ISO14443A_CMD_HALT, 0x00, receivedAnswer, receivedAnswerPar, NULL);\r
	if (len != 0) {\r
		if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
			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
{\r
	if (sectorNo < 32)\r
		return 4;\r
	else\r
		return 16;\r
}\r
\r
uint8_t FirstBlockOfSector(uint8_t sectorNo)\r
{\r
	if (sectorNo < 32)\r
		return sectorNo * 4;\r
	else\r
		return 32*4 + (sectorNo - 32) * 16;\r
\r
}\r
\r
uint8_t SectorTrailer(uint8_t blockNo)\r
{\r
	if (blockNo < 32*4) {\r
		return (blockNo | 0x03);\r
	} else {\r
		return (blockNo | 0x0f);\r
	}\r
}\r
\r
bool IsSectorTrailer(uint8_t blockNo)\r
{\r
	return (blockNo == SectorTrailer(blockNo));\r
}\r
\r
// work with emulator memory\r
void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {\r
	uint8_t* emCARD = BigBuf_get_EM_addr();\r
	memcpy(emCARD + blockNum * 16, data, blocksCount * 16);\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
\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];\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
\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] = {0x00};\r
	dcmd[0] = cmd;\r
	memcpy(dcmd+1,data,2);\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];\r
	uint8_t receivedAnswerPar[MAX_PARITY_SIZE];\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_MIFARE_FRAME_SIZE];\r
	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];\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
\r
//-----------------------------------------------------------------------------\r
// MIFARE check keys\r
//\r
//-----------------------------------------------------------------------------\r
// one key check\r
static int MifareChkBlockKey(uint8_t *uid, uint32_t *cuid, uint8_t *cascade_levels, uint8_t *key, uint8_t blockNo, uint8_t keyType, uint32_t *auth_timeout, uint8_t debugLevel, bool fixed_nonce) {\r
\r
	struct Crypto1State mpcs = {0, 0};\r
	struct Crypto1State *pcs;\r
	pcs = &mpcs;\r
\r
	if (*cascade_levels == 0) { // need a full select cycle to get the uid first\r
		iso14a_card_select_t card_info;\r
		if (!iso14443a_select_card(uid, &card_info, cuid, true, 0, true)) {\r
			if (debugLevel >= 1)    Dbprintf("ChkKeys: Can't select card");\r
			return  -1;\r
		}\r
		switch (card_info.uidlen) {\r
			case 4 : *cascade_levels = 1; break;\r
			case 7 : *cascade_levels = 2; break;\r
			case 10: *cascade_levels = 3; break;\r
			default: break;\r
		}\r
	} else { // no need for anticollision. We can directly select the card\r
		if (!iso14443a_select_card(uid, NULL, NULL, false, *cascade_levels, true)) {\r
			if (debugLevel >= 1)    Dbprintf("ChkKeys: Can't select card (UID) lvl=%d", *cascade_levels);\r
			return  -1;\r
		}\r
	}\r
\r
	if (!fixed_nonce) {\r
		uint64_t ui64Key = bytes_to_num(key, 6);\r
		if (mifare_classic_auth(pcs, *cuid, blockNo, keyType, ui64Key, AUTH_FIRST, auth_timeout)) { // authentication failed\r
			return -2;\r
		} else {\r
			mifare_classic_halt(pcs, *cuid);\r
		}\r
	} else {\r
		uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];\r
		uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];\r
		// Transmit MIFARE_CLASSIC_AUTH\r
		int len = mifare_sendcmd_short(pcs, false, keyType & 0x01 ? MIFARE_AUTH_KEYB : MIFARE_AUTH_KEYA, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r
		if (len != 4) return -2;\r
		// Transmit encrypted reader nonce and reader answer\r
		uint8_t mf_nr_ar[8] = NESTED_FIXED_NR_ENC;\r
		memcpy(mf_nr_ar + 4, key, 4);\r
		ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), key + 4, NULL);\r
		uint32_t save_timeout = iso14a_get_timeout(); // save standard timeout\r
		iso14a_set_timeout(*auth_timeout);            // set timeout for authentication response\r
		len = ReaderReceive(receivedAnswer, receivedAnswerPar);\r
		iso14a_set_timeout(save_timeout);             // restore standard timeout\r
		if (!len) return -2;\r
	}\r
\r
	return 0; // success\r
}\r
\r
// multi key check\r
static int MifareChkBlockKeysEx(uint8_t *keys, uint8_t keyCount, uint8_t blockNo, uint8_t keyType, uint32_t *auth_timeout, uint8_t debugLevel, bool fixed_nonce) {\r
\r
	uint8_t uid[10];\r
	uint32_t cuid = 0;\r
	uint8_t cascade_levels = 0;\r
\r
	int retryCount = 0;\r
	for (uint8_t i = 0; i < keyCount; i++) {\r
		uint8_t bytes_per_key = fixed_nonce ? 5 : 6;\r
		int res = MifareChkBlockKey(uid, &cuid, &cascade_levels, keys + i*bytes_per_key, blockNo, keyType, auth_timeout, debugLevel, fixed_nonce);\r
		if (res == -1) { 		// couldn't select\r
			retryCount++;\r
			if (retryCount >= 5) {\r
				Dbprintf("ChkKeys: block=%d key=%d. Couldn't select. Exit...", blockNo, keyType);\r
				return -1;\r
			} else {\r
				--i; // try the same key once again\r
				SpinDelay(20);\r
				// Dbprintf("ChkKeys: block=%d key=%d. Try the same key once again...", blockNo, keyType);\r
				continue;\r
			}\r
		}\r
		if (res == -2) { 		// couldn't authenticate with this key\r
			retryCount = 0;\r
			continue;\r
		}\r
\r
		return i + 1;           // successful authentication\r
\r
	}\r
\r
	if (BUTTON_PRESS()) {\r
		return -2;\r
	}\r
\r
	return 0;                   // couldn't authenticate with any key\r
}\r
\r
\r
int MifareChkBlockKeys(uint8_t *keys, uint8_t keyCount, uint8_t blockNo, uint8_t keyType, uint32_t *auth_timeout, uint8_t debugLevel) {\r
	return MifareChkBlockKeysEx(keys, keyCount, blockNo, keyType, auth_timeout, debugLevel, false);\r
}\r
\r
\r
// fixed nonce check\r
int MifareChkBlockKeysFixedNonce(uint8_t *ar_par, uint8_t ar_par_cnt, uint8_t blockNo, uint8_t keyType, uint32_t *auth_timeout, uint8_t debugLevel) {\r
	return MifareChkBlockKeysEx(ar_par, ar_par_cnt, blockNo, keyType, auth_timeout, debugLevel, true);\r
}\r
\r
\r
// multisector multikey check\r
int MifareMultisectorChk(uint8_t *keys, uint8_t keyCount, uint8_t SectorCount, uint8_t keyType, uint32_t *auth_timeout, uint8_t debugLevel, TKeyIndex *keyIndex) {\r
	int res = 0;\r
\r
//  int clk = GetCountSspClk();\r
\r
	for(int sc = 0; sc < SectorCount; sc++){\r
		WDT_HIT();\r
\r
		int keyAB = keyType;\r
		do {\r
			res = MifareChkBlockKeys(keys, keyCount, FirstBlockOfSector(sc), keyAB & 0x01, auth_timeout, debugLevel);\r
			if (res < 0) {\r
				return res;\r
			}\r
			if (res > 0) {\r
				(*keyIndex)[keyAB & 0x01][sc] = res;\r
			}\r
		} while(--keyAB > 0);\r
	}\r
\r
//  Dbprintf("%d %d", GetCountSspClk() - clk, (GetCountSspClk() - clk)/(SectorCount*keyCount*(keyType==2?2:1)));\r
\r
	return 1;\r
}\r
\r
\r