[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 "proxmark3.h"\r
#include "apps.h"\r
#include "util.h"\r
#include "string.h"\r
\r
#include "iso14443crc.h"\r
#include "iso14443a.h"\r
#include "crapto1.h"\r
#include "mifareutil.h"\r
\r
int MF_DBGLEVEL = MF_DBG_ALL;\r
\r
// memory management\r
uint8_t* get_bigbufptr_recvrespbuf(void) {\r
	return (((uint8_t *)BigBuf) + RECV_RESP_OFFSET);	\r
}\r
uint8_t* get_bigbufptr_recvcmdbuf(void) {\r
	return (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);	\r
}\r
uint8_t* get_bigbufptr_emlcardmem(void) {\r
	return (((uint8_t *)BigBuf) + CARD_MEMORY_OFFSET);\r
}\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 = 0;\r
		for (i = 0; i < 4; i++)\r
			bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], i)) << i;\r
				\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) ^ oddparity(bt)) & 0x01)<<(7-(i&0x0007)));\r
	}	\r
	return;\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 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
{\r
	return mifare_sendcmd_shortex(pcs, crypted, cmd, data, answer, answer_parity, timing);
}

int mifare_sendcmd_short_special(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)
{
	uint8_t dcmd[8];
    dcmd[0] = cmd;
    dcmd[1] = data[0];
	dcmd[2] = data[1];
	dcmd[3] = data[2];
	dcmd[4] = data[3];
	dcmd[5] = data[4];
	AppendCrc14443a(dcmd, 6);
	ReaderTransmit(dcmd, sizeof(dcmd), NULL);
	int len = ReaderReceive(answer, answer_parity);
	if(!len)
	{
                if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Card timeout.");
                return 2;
        }
	return len;
}

int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing)
{
	uint8_t dcmd[4], ecmd[4];
	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) ^ oddparity(dcmd[pos])) & 0x01) << (7-pos));\r
		}	\r
\r
		ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);\r
\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
// 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
{\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
{\r
	// variables\r
	int len;	\r
	uint32_t pos;\r
	uint8_t tmp4[4];\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 = get_bigbufptr_recvrespbuf();\r
	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;\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
	// "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
	{\r
		mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];\r
		par[0] |= (((filter(pcs->odd) ^ oddparity(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
	{\r
		nt = prng_successor(nt,8);\r
		mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);\r
		par[0] |= (((filter(pcs->odd) ^ oddparity(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
	{\r
		if (MF_DBGLEVEL >= 1)	Dbprintf("Authentication failed. Card timeout.");\r
		return 2;\r
	}\r
	\r
	memcpy(tmp4, receivedAnswer, 4);\r
	ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);\r
	\r
	if (ntpp != bytes_to_num(tmp4, 4)) {\r
		if (MF_DBGLEVEL >= 1)	Dbprintf("Authentication failed. Error card response.");\r
		return 3;\r
	}\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
	// variables\r
	int len;	\r
	uint8_t	bt[2];\r
	\r
	uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();\r
	uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;\r
	\r
	// command MIFARE_CLASSIC_READBLOCK\r
	len = mifare_sendcmd_short(pcs, 1, 0x30, 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;
}

int mifare_ultra_readblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
{
	uint16_t len;
	uint8_t	bt[2];
	uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();\r
	uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
	
	\r
	// command MIFARE_CLASSIC_READBLOCK
	len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
	if (len == 1) {
		if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
			Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
		return 1;
	}
	if (len != 18) {
		if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
			Dbprintf("Cmd Error: card timeout. len: %x", len);
		return 2;
	}
    
	memcpy(bt, receivedAnswer + 16, 2);
	AppendCrc14443a(receivedAnswer, 16);
	if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
		if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
			Dbprintf("Cmd CRC response error.");
		return 3;
	}
	
	memcpy(blockData, receivedAnswer, 14);
	return 0;
}


int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) 
{
	// variables
	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 = get_bigbufptr_recvrespbuf();\r
	uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;\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
	{\r
		d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];\r
		par[pos>>3] |= (((filter(pcs->odd) ^ oddparity(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;
}

int mifare_ultra_writeblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData) 
{
    uint16_t len;     
    uint8_t par[3] = {0};  // enough for 18 parity bits
	uint8_t d_block[18] = {0x00};
    uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();\r
	uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
        
    // command MIFARE_CLASSIC_WRITEBLOCK
    len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);

    if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
		if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
			Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);  
        return 1;
    }

	memcpy(d_block, blockData, 16);
    AppendCrc14443a(d_block, 16);

	ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);

    len = ReaderReceive(receivedAnswer, receivedAnswerPar);    

	if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
		if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
			Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
        return 2;
    }        
    return 0;
} 

int mifare_ultra_special_writeblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
{
    uint16_t len;
	uint8_t d_block[8] = {0x00};
    uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();\r
	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;

    // command MIFARE_CLASSIC_WRITEBLOCK
	d_block[0]= blockNo;
	memcpy(d_block+1,blockData,4);
	AppendCrc14443a(d_block, 6);

    len = mifare_sendcmd_short_special(NULL, 1, 0xA2, d_block, receivedAnswer, receivedAnswerPar, NULL);

    if (receivedAnswer[0] != 0x0A) {   //  0x0a - ACK
		if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
			Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
        return 1;
    }
\r    return 0;
}

int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) 
{
	uint16_t len;	\r
	uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();\r
	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;\r
\r
	len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 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;
}

int mifare_ultra_halt(uint32_t uid)
{
	uint16_t len;
	uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();\r
	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
    
	len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
	if (len != 0) {
		if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
			Dbprintf("halt error. response len: %x", len);
		return 1;
	}
	return 0;
}

\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
\r
// work with emulator memory
void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
	uint8_t* emCARD = get_bigbufptr_emlcardmem();
	memcpy(emCARD + blockNum * 16, data, blocksCount * 16);\r
}\r
\r
void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {\r
	uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
	memcpy(data, emCARD + blockNum * 16, blocksCount * 16);\r
}\r
\r
void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {\r
	uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
	memcpy(data, emCARD + bytePtr, byteCount);\r
}\r
\r
int emlCheckValBl(int blockNum) {\r
	uint8_t* emCARD = get_bigbufptr_emlcardmem();\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 = get_bigbufptr_emlcardmem();\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 = get_bigbufptr_emlcardmem();\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 = get_bigbufptr_emlcardmem();\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 = get_bigbufptr_emlcardmem();\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
Commit	Line	Data
20f9a2a1	1	//-----------------------------------------------------------------------------\r
b62a5a84	2	// Merlok, May 2011, 2012\r
8f51ddb0	3	// Many authors, whom made it possible\r
20f9a2a1 M	4	//\r
	5	// This code is licensed to you under the terms of the GNU GPL, version 2 or,\r
	6	// at your option, any later version. See the LICENSE.txt file for the text of\r
	7	// the license.\r
	8	//-----------------------------------------------------------------------------\r
8f51ddb0	9	// Work with mifare cards.\r
20f9a2a1 M	10	//-----------------------------------------------------------------------------\r
	11	\r
	12	#include "proxmark3.h"\r
	13	#include "apps.h"\r
	14	#include "util.h"\r
	15	#include "string.h"\r
	16	\r
	17	#include "iso14443crc.h"\r
	18	#include "iso14443a.h"\r
	19	#include "crapto1.h"\r
	20	#include "mifareutil.h"\r
	21	\r
f397b5cc M	22	int MF_DBGLEVEL = MF_DBG_ALL;\r
f397b5cc M	23	\r
8f51ddb0	24	// memory management\r
6a1f2d82	25	uint8_t* get_bigbufptr_recvrespbuf(void) {\r
6a1f2d82	26	return (((uint8_t *)BigBuf) + RECV_RESP_OFFSET); \r
8f51ddb0	27	}\r
6a1f2d82	28	uint8_t* get_bigbufptr_recvcmdbuf(void) {\r
8f51ddb0 M	29	return (((uint8_t *)BigBuf) + RECV_CMD_OFFSET); \r
8f51ddb0 M	30	}\r
6a1f2d82	31	uint8_t* get_bigbufptr_emlcardmem(void) {\r
6a1f2d82	32	return (((uint8_t *)BigBuf) + CARD_MEMORY_OFFSET);\r
8f51ddb0 M	33	}\r
	34	\r
	35	// crypto1 helpers\r
	36	void mf_crypto1_decrypt(struct Crypto1State pcs, uint8_t data, int len){\r
	37	uint8_t bt = 0;\r
	38	int i;\r
	39	\r
	40	if (len != 1) {\r
	41	for (i = 0; i < len; i++)\r
	42	data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];\r
	43	} else {\r
	44	bt = 0;\r
	45	for (i = 0; i < 4; i++)\r
	46	bt \|= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], i)) << i;\r
	47	\r
	48	data[0] = bt;\r
	49	}\r
	50	return;\r
	51	}\r
	52	\r
6a1f2d82	53	void mf_crypto1_encrypt(struct Crypto1State pcs, uint8_t data, uint16_t len, uint8_t *par) {\r
8f51ddb0 M	54	uint8_t bt = 0;\r
8f51ddb0 M	55	int i;\r
6a1f2d82	56	par[0] = 0;\r
3fe4ff4f	57	\r
8f51ddb0 M	58	for (i = 0; i < len; i++) {\r
	59	bt = data[i];\r
	60	data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];\r
3fe4ff4f	61	if((i&0x0007) == 0) \r
3fe4ff4f	62	par[i>>3] = 0;\r
6a1f2d82	63	par[i>>3] \|= (((filter(pcs->odd) ^ oddparity(bt)) & 0x01)<<(7-(i&0x0007)));\r
8f51ddb0 M	64	} \r
	65	return;\r
	66	}\r
	67	\r
	68	uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {\r
	69	uint8_t bt = 0;\r
	70	int i;\r
	71	\r
	72	for (i = 0; i < 4; i++)\r
	73	bt \|= (crypto1_bit(pcs, 0, 0) ^ BIT(data, i)) << i;\r
	74	\r
	75	return bt;\r
20f9a2a1 M	76	}\r
20f9a2a1 M	77	\r
8f51ddb0	78	// send commands\r
6a1f2d82	79	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
f89c7050	80	{\r
6a1f2d82	81	return mifare_sendcmd_shortex(pcs, crypted, cmd, data, answer, answer_parity, timing);
981bd429	82	}
981bd429	83
6a1f2d82	84	int mifare_sendcmd_short_special(struct Crypto1State pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer, uint8_t answer_parity, uint32_t timing)
981bd429	85	{
3fe4ff4f	86	uint8_t dcmd[8];
6a1f2d82	87	dcmd[0] = cmd;
6a1f2d82	88	dcmd[1] = data[0];
981bd429	89	dcmd[2] = data[1];
	90	dcmd[3] = data[2];
	91	dcmd[4] = data[3];
	92	dcmd[5] = data[4];
	93	AppendCrc14443a(dcmd, 6);
981bd429	94	ReaderTransmit(dcmd, sizeof(dcmd), NULL);
6a1f2d82	95	int len = ReaderReceive(answer, answer_parity);
981bd429	96	if(!len)
	97	{
	98	if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout.");
	99	return 2;
	100	}
	101	return len;
	102	}
	103
6a1f2d82	104	int mifare_sendcmd_shortex(struct Crypto1State pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t answer, uint8_t answer_parity, uint32_t timing)
981bd429	105	{
981bd429	106	uint8_t dcmd[4], ecmd[4];
6a1f2d82	107	uint16_t pos, res;\r
6a1f2d82	108	uint8_t par[1]; // 1 Byte parity is enough here\r
20f9a2a1 M	109	dcmd[0] = cmd;\r
	110	dcmd[1] = data;\r
	111	AppendCrc14443a(dcmd, 2);\r
	112	\r
	113	memcpy(ecmd, dcmd, sizeof(dcmd));\r
	114	\r
	115	if (crypted) {\r
6a1f2d82	116	par[0] = 0;\r
20f9a2a1 M	117	for (pos = 0; pos < 4; pos++)\r
	118	{\r
	119	ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];\r
6a1f2d82	120	par[0] \|= (((filter(pcs->odd) ^ oddparity(dcmd[pos])) & 0x01) << (7-pos));\r
20f9a2a1 M	121	} \r
20f9a2a1 M	122	\r
9492e0b0	123	ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);\r
20f9a2a1 M	124	\r
20f9a2a1 M	125	} else {\r
9492e0b0	126	ReaderTransmit(dcmd, sizeof(dcmd), timing);\r
20f9a2a1 M	127	}\r
20f9a2a1 M	128	\r
6a1f2d82	129	int len = ReaderReceive(answer, par);\r
	130	\r
	131	if (answer_parity) *answer_parity = par[0];\r
f89c7050	132	\r
4abe4f58	133	if (crypted == CRYPT_ALL) {\r
20f9a2a1 M	134	if (len == 1) {\r
	135	res = 0;\r
	136	for (pos = 0; pos < 4; pos++)\r
	137	res \|= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], pos)) << pos;\r
	138	\r
	139	answer[0] = res;\r
	140	\r
	141	} else {\r
	142	for (pos = 0; pos < len; pos++)\r
	143	{\r
	144	answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];\r
	145	}\r
	146	}\r
	147	}\r
	148	\r
	149	return len;\r
	150	}\r
	151	\r
787b5bd8	152	// mifare classic commands\r
6a1f2d82	153	int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested) \r
f89c7050	154	{\r
9492e0b0	155	return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);\r
f89c7050 M	156	}\r
f89c7050 M	157	\r
6a1f2d82	158	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
20f9a2a1 M	159	{\r
20f9a2a1 M	160	// variables\r
4abe4f58	161	int len; \r
20f9a2a1 M	162	uint32_t pos;\r
20f9a2a1 M	163	uint8_t tmp4[4];\r
3fe4ff4f	164	uint8_t par[1] = {0x00};\r
6a1f2d82	165	byte_t nr[4];\r
20f9a2a1 M	166	uint32_t nt, ntpp; // Supplied tag nonce\r
	167	\r
	168	uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };\r
6a1f2d82	169	uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();\r
	170	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;\r
	171	\r
4abe4f58	172	// Transmit MIFARE_CLASSIC_AUTH\r
6a1f2d82	173	len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);\r
6a1f2d82	174	if (MF_DBGLEVEL >= 4) Dbprintf("rand tag nonce len: %x", len); \r
4abe4f58	175	if (len != 4) return 1;\r
20f9a2a1	176	\r
6a1f2d82	177	// "random" reader nonce:\r
	178	nr[0] = 0x55;\r
	179	nr[1] = 0x41;\r
	180	nr[2] = 0x49;\r
	181	nr[3] = 0x92; \r
20f9a2a1 M	182	\r
	183	// Save the tag nonce (nt)\r
	184	nt = bytes_to_num(receivedAnswer, 4);\r
20f9a2a1 M	185	\r
20f9a2a1 M	186	// ----------------------------- crypto1 create\r
4abe4f58 M	187	if (isNested)\r
	188	crypto1_destroy(pcs);\r
	189	\r
	190	// Init cipher with key\r
20f9a2a1 M	191	crypto1_create(pcs, ui64Key);\r
20f9a2a1 M	192	\r
4abe4f58 M	193	if (isNested == AUTH_NESTED) {\r
	194	// decrypt nt with help of new key \r
	195	nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;\r
	196	} else {\r
	197	// Load (plain) uid^nt into the cipher\r
	198	crypto1_word(pcs, nt ^ uid, 0);\r
	199	}\r
	200	\r
	201	// some statistic\r
f397b5cc	202	if (!ntptr && (MF_DBGLEVEL >= 3))\r
f89c7050 M	203	Dbprintf("auth uid: %08x nt: %08x", uid, nt); \r
	204	\r
	205	// save Nt\r
	206	if (ntptr)\r
	207	*ntptr = nt;\r
20f9a2a1	208	\r
4abe4f58	209	// Generate (encrypted) nr+parity by loading it into the cipher (Nr)\r
6a1f2d82	210	par[0] = 0;\r
4abe4f58 M	211	for (pos = 0; pos < 4; pos++)\r
4abe4f58 M	212	{\r
6a1f2d82	213	mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];\r
6a1f2d82	214	par[0] \|= (((filter(pcs->odd) ^ oddparity(nr[pos])) & 0x01) << (7-pos));\r
4abe4f58	215	} \r
20f9a2a1	216	\r
4abe4f58 M	217	// Skip 32 bits in pseudo random generator\r
4abe4f58 M	218	nt = prng_successor(nt,32);\r
20f9a2a1 M	219	\r
20f9a2a1 M	220	// ar+parity\r
4abe4f58 M	221	for (pos = 4; pos < 8; pos++)\r
4abe4f58 M	222	{\r
20f9a2a1	223	nt = prng_successor(nt,8);\r
4abe4f58	224	mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);\r
6a1f2d82	225	par[0] \|= (((filter(pcs->odd) ^ oddparity(nt & 0xff)) & 0x01) << (7-pos));\r
4abe4f58	226	} \r
20f9a2a1	227	\r
4abe4f58	228	// Transmit reader nonce and reader answer\r
9492e0b0	229	ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);\r
20f9a2a1	230	\r
6a1f2d82	231	// Receive 4 byte tag answer\r
6a1f2d82	232	len = ReaderReceive(receivedAnswer, receivedAnswerPar);\r
4abe4f58 M	233	if (!len)\r
4abe4f58 M	234	{\r
f397b5cc	235	if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout.");\r
20f9a2a1	236	return 2;\r
4abe4f58	237	}\r
20f9a2a1	238	\r
4abe4f58	239	memcpy(tmp4, receivedAnswer, 4);\r
20f9a2a1 M	240	ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);\r
	241	\r
	242	if (ntpp != bytes_to_num(tmp4, 4)) {\r
f397b5cc	243	if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Error card response.");\r
20f9a2a1 M	244	return 3;\r
	245	}\r
	246	\r
	247	return 0;\r
	248	}\r
	249	\r
	250	int mifare_classic_readblock(struct Crypto1State pcs, uint32_t uid, uint8_t blockNo, uint8_t blockData) \r
	251	{\r
	252	// variables\r
4abe4f58	253	int len; \r
20f9a2a1 M	254	uint8_t bt[2];\r
20f9a2a1 M	255	\r
6a1f2d82	256	uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();\r
6a1f2d82	257	uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;\r
20f9a2a1	258	\r
4abe4f58	259	// command MIFARE_CLASSIC_READBLOCK\r
6a1f2d82	260	len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r
20f9a2a1	261	if (len == 1) {\r
f397b5cc	262	if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]); \r
20f9a2a1 M	263	return 1;\r
	264	}\r
	265	if (len != 18) {\r
f397b5cc	266	if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: card timeout. len: %x", len); \r
20f9a2a1 M	267	return 2;\r
	268	}\r
	269	\r
	270	memcpy(bt, receivedAnswer + 16, 2);\r
4abe4f58	271	AppendCrc14443a(receivedAnswer, 16);\r
20f9a2a1	272	if (bt[0] != receivedAnswer[16] \|\| bt[1] != receivedAnswer[17]) {\r
f397b5cc	273	if (MF_DBGLEVEL >= 1) Dbprintf("Cmd CRC response error."); \r
20f9a2a1 M	274	return 3;\r
	275	}\r
	276	\r
	277	memcpy(blockData, receivedAnswer, 16);\r
981bd429	278	return 0;
	279	}
	280
	281	int mifare_ultra_readblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
	282	{
6a1f2d82	283	uint16_t len;
981bd429	284	uint8_t bt[2];
6a1f2d82	285	uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();\r
6a1f2d82	286	uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
981bd429	287
3fe4ff4f	288	\r
981bd429	289	// command MIFARE_CLASSIC_READBLOCK
6a1f2d82	290	len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
981bd429	291	if (len == 1) {
787b5bd8	292	if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
787b5bd8	293	Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
981bd429	294	return 1;
	295	}
	296	if (len != 18) {
787b5bd8	297	if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
787b5bd8	298	Dbprintf("Cmd Error: card timeout. len: %x", len);
981bd429	299	return 2;
	300	}
	301
	302	memcpy(bt, receivedAnswer + 16, 2);
	303	AppendCrc14443a(receivedAnswer, 16);
	304	if (bt[0] != receivedAnswer[16] \|\| bt[1] != receivedAnswer[17]) {
787b5bd8	305	if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
787b5bd8	306	Dbprintf("Cmd CRC response error.");
981bd429	307	return 3;
	308	}
	309
	310	memcpy(blockData, receivedAnswer, 14);
	311	return 0;
	312	}
	313
	314
	315	int mifare_classic_writeblock(struct Crypto1State pcs, uint32_t uid, uint8_t blockNo, uint8_t blockData)
	316	{
	317	// variables
3fe4ff4f	318	uint16_t len, i; \r
20f9a2a1	319	uint32_t pos;\r
6a1f2d82	320	uint8_t par[3] = {0}; // enough for 18 Bytes to send\r
4abe4f58	321	byte_t res;\r
20f9a2a1 M	322	\r
20f9a2a1 M	323	uint8_t d_block[18], d_block_enc[18];\r
6a1f2d82	324	uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();\r
6a1f2d82	325	uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;\r
20f9a2a1	326	\r
4abe4f58	327	// command MIFARE_CLASSIC_WRITEBLOCK\r
6a1f2d82	328	len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r
20f9a2a1 M	329	\r
20f9a2a1 M	330	if ((len != 1) \|\| (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK\r
f397b5cc	331	if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]); \r
20f9a2a1 M	332	return 1;\r
	333	}\r
	334	\r
	335	memcpy(d_block, blockData, 16);\r
	336	AppendCrc14443a(d_block, 16);\r
	337	\r
	338	// crypto\r
4abe4f58 M	339	for (pos = 0; pos < 18; pos++)\r
	340	{\r
	341	d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];\r
6a1f2d82	342	par[pos>>3] \|= (((filter(pcs->odd) ^ oddparity(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));\r
4abe4f58	343	} \r
20f9a2a1	344	\r
9492e0b0	345	ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);\r
20f9a2a1	346	\r
4abe4f58	347	// Receive the response\r
6a1f2d82	348	len = ReaderReceive(receivedAnswer, receivedAnswerPar); \r
20f9a2a1 M	349	\r
	350	res = 0;\r
	351	for (i = 0; i < 4; i++)\r
	352	res \|= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;\r
	353	\r
	354	if ((len != 1) \|\| (res != 0x0A)) {\r
f397b5cc	355	if (MF_DBGLEVEL >= 1) Dbprintf("Cmd send data2 Error: %02x", res); \r
20f9a2a1 M	356	return 2;\r
	357	}\r
	358	\r
981bd429	359	return 0;
	360	}
	361
	362	int mifare_ultra_writeblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
	363	{
6a1f2d82	364	uint16_t len;
6a1f2d82	365	uint8_t par[3] = {0}; // enough for 18 parity bits
787b5bd8	366	uint8_t d_block[18] = {0x00};
6a1f2d82	367	uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();\r
6a1f2d82	368	uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
981bd429	369
6a1f2d82	370	// command MIFARE_CLASSIC_WRITEBLOCK
6a1f2d82	371	len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
981bd429	372
6a1f2d82	373	if ((len != 1) \|\| (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
787b5bd8	374	if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
787b5bd8	375	Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
6a1f2d82	376	return 1;
6a1f2d82	377	}
981bd429	378
981bd429	379	memcpy(d_block, blockData, 16);
6a1f2d82	380	AppendCrc14443a(d_block, 16);
981bd429	381
	382	ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
	383
6a1f2d82	384	len = ReaderReceive(receivedAnswer, receivedAnswerPar);
981bd429	385
981bd429	386	if ((len != 1) \|\| (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
787b5bd8	387	if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
787b5bd8	388	Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
6a1f2d82	389	return 2;
6a1f2d82	390	}
6a1f2d82	391	return 0;
981bd429	392	}
	393
	394	int mifare_ultra_special_writeblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
	395	{
6a1f2d82	396	uint16_t len;
787b5bd8	397	uint8_t d_block[8] = {0x00};
6a1f2d82	398	uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();\r
6a1f2d82	399	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
981bd429	400
6a1f2d82	401	// command MIFARE_CLASSIC_WRITEBLOCK
981bd429	402	d_block[0]= blockNo;
	403	memcpy(d_block+1,blockData,4);
	404	AppendCrc14443a(d_block, 6);
	405
6a1f2d82	406	len = mifare_sendcmd_short_special(NULL, 1, 0xA2, d_block, receivedAnswer, receivedAnswerPar, NULL);
981bd429	407
6a1f2d82	408	if (receivedAnswer[0] != 0x0A) { // 0x0a - ACK
787b5bd8	409	if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
787b5bd8	410	Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
6a1f2d82	411	return 1;
6a1f2d82	412	}
787b5bd8	413	\r return 0;
981bd429	414	}
	415
	416	int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)
	417	{
6a1f2d82	418	uint16_t len; \r
6a1f2d82	419	uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();\r
6a1f2d82	420	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;\r
20f9a2a1	421	\r
6a1f2d82	422	len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);\r
4abe4f58	423	if (len != 0) {\r
787b5bd8	424	if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
787b5bd8	425	Dbprintf("halt error. response len: %x", len); \r
20f9a2a1 M	426	return 1;\r
	427	}\r
	428	\r
981bd429	429	return 0;
	430	}
	431
	432	int mifare_ultra_halt(uint32_t uid)
	433	{
6a1f2d82	434	uint16_t len;
6a1f2d82	435	uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();\r
6a1f2d82	436	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
981bd429	437
6a1f2d82	438	len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
981bd429	439	if (len != 0) {
787b5bd8	440	if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
787b5bd8	441	Dbprintf("halt error. response len: %x", len);
981bd429	442	return 1;
981bd429	443	}
981bd429	444	return 0;
	445	}
	446
baeaf579	447	\r
	448	// Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),\r
	449	// plus evtl. 8 sectors with 16 blocks each (4k cards)\r
	450	uint8_t NumBlocksPerSector(uint8_t sectorNo) \r
	451	{\r
	452	if (sectorNo < 32) \r
	453	return 4;\r
	454	else\r
	455	return 16;\r
	456	}\r
	457	\r
	458	uint8_t FirstBlockOfSector(uint8_t sectorNo) \r
	459	{\r
	460	if (sectorNo < 32)\r
	461	return sectorNo * 4;\r
	462	else\r
	463	return 324 + (sectorNo - 32) 16;\r
	464	\r
	465	}\r
	466	\r
	467	\r
981bd429	468	// work with emulator memory
981bd429	469	void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
6a1f2d82	470	uint8_t* emCARD = get_bigbufptr_emlcardmem();
8f51ddb0 M	471	memcpy(emCARD + blockNum * 16, data, blocksCount * 16);\r
	472	}\r
	473	\r
	474	void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {\r
6a1f2d82	475	uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
8f51ddb0 M	476	memcpy(data, emCARD + blockNum * 16, blocksCount * 16);\r
	477	}\r
	478	\r
	479	void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {\r
6a1f2d82	480	uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
8f51ddb0 M	481	memcpy(data, emCARD + bytePtr, byteCount);\r
	482	}\r
	483	\r
0014cb46	484	int emlCheckValBl(int blockNum) {\r
6a1f2d82	485	uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
0014cb46 M	486	uint8_t* data = emCARD + blockNum * 16;\r
	487	\r
	488	if ((data[0] != (data[4] ^ 0xff)) \|\| (data[0] != data[8]) \|\|\r
	489	(data[1] != (data[5] ^ 0xff)) \|\| (data[1] != data[9]) \|\|\r
	490	(data[2] != (data[6] ^ 0xff)) \|\| (data[2] != data[10]) \|\|\r
	491	(data[3] != (data[7] ^ 0xff)) \|\| (data[3] != data[11]) \|\|\r
	492	(data[12] != (data[13] ^ 0xff)) \|\| (data[12] != data[14]) \|\|\r
	493	(data[12] != (data[15] ^ 0xff))\r
	494	) \r
	495	return 1;\r
	496	return 0;\r
	497	}\r
	498	\r
	499	int emlGetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {\r
6a1f2d82	500	uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
0014cb46 M	501	uint8_t* data = emCARD + blockNum * 16;\r
	502	\r
	503	if (emlCheckValBl(blockNum)) {\r
	504	return 1;\r
	505	}\r
	506	\r
	507	memcpy(blReg, data, 4);\r
	508	*blBlock = data[12];\r
0014cb46 M	509	return 0;\r
	510	}\r
	511	\r
	512	int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {\r
6a1f2d82	513	uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
0014cb46 M	514	uint8_t* data = emCARD + blockNum * 16;\r
	515	\r
	516	memcpy(data + 0, &blReg, 4);\r
	517	memcpy(data + 8, &blReg, 4);\r
	518	blReg = blReg ^ 0xffffffff;\r
	519	memcpy(data + 4, &blReg, 4);\r
	520	\r
	521	data[12] = blBlock;\r
	522	data[13] = blBlock ^ 0xff;\r
	523	data[14] = blBlock;\r
	524	data[15] = blBlock ^ 0xff;\r
	525	\r
	526	return 0;\r
	527	}\r
	528	\r
8556b852 M	529	uint64_t emlGetKey(int sectorNum, int keyType) {\r
8556b852 M	530	uint8_t key[6];\r
6a1f2d82	531	uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
8556b852	532	\r
baeaf579	533	memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);\r
8556b852 M	534	return bytes_to_num(key, 6);\r
	535	}\r
	536	\r
8f51ddb0	537	void emlClearMem(void) {\r
aea4d766	538	int b;\r
8f51ddb0 M	539	\r
8f51ddb0 M	540	const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};\r
8f51ddb0	541	const uint8_t uid[] = {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};\r
6a1f2d82	542	uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
aea4d766	543	\r
6a1f2d82	544	memset(emCARD, 0, CARD_MEMORY_SIZE);\r
aea4d766	545	\r
	546	// fill sectors trailer data\r
	547	for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {\r
	548	emlSetMem((uint8_t *)trailer, b , 1);\r
	549	} \r
8f51ddb0 M	550	\r
	551	// uid\r
	552	emlSetMem((uint8_t *)uid, 0, 1);\r
	553	return;\r
	554	}\r