[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
	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) 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];//, ecmd[4];
    //uint32_t par=0;

    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);
	//Dbprintf("Data command: %02x", dcmd[0]);
	//Dbprintf("Data R: %02x %02x %02x %02x %02x %02x %02x", dcmd[1],dcmd[2],dcmd[3],dcmd[4],dcmd[5],dcmd[6],dcmd[7]);

        //memcpy(ecmd, dcmd, sizeof(dcmd));
	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 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] = {0};\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
		\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)
{
	// variables
	uint16_t len;
	uint8_t	bt[2];
	
	uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();\r
	uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
	
	// command MIFARE_CLASSIC_READBLOCK
	len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
	if (len == 1) {
		if (MF_DBGLEVEL >= 1)	Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
		return 1;
	}
	if (len != 18) {
		if (MF_DBGLEVEL >= 1)	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 >= 1)	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
	int 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) 
{
    // variables
    uint16_t len;     
    uint8_t par[3] = {0};  // enough for 18 parity bits
        
    uint8_t d_block[18];
    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 >= 1)   Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);  
        return 1;
    }

	memset(d_block,'\0',18);
	memcpy(d_block, blockData, 16);
    AppendCrc14443a(d_block, 16);

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

    // Receive the response
    len = ReaderReceive(receivedAnswer, receivedAnswerPar);    

	if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
        if (MF_DBGLEVEL >= 1)   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];
    uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();\r
	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;

    // command MIFARE_CLASSIC_WRITEBLOCK
	memset(d_block,'\0',8);
	d_block[0]= blockNo;
	memcpy(d_block+1,blockData,4);
	AppendCrc14443a(d_block, 6);

	//i know the data send here is correct
    len = mifare_sendcmd_short_special(NULL, 1, 0xA2, d_block, receivedAnswer, receivedAnswerPar, NULL);

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

int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) 
{
	// variables
	uint16_t len;	\r
	\r
	// Mifare HALT\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 >= 1)	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;
	
	// Mifare HALT
	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 >= 1)	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();
	\r
	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
	\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
	\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
	\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
8f51ddb0 M	57	for (i = 0; i < len; i++) {\r
	58	bt = data[i];\r
	59	data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];\r
6a1f2d82	60	if((i&0x0007) == 0) par[i>>3] = 0;\r
6a1f2d82	61	par[i>>3] \|= (((filter(pcs->odd) ^ oddparity(bt)) & 0x01)<<(7-(i&0x0007)));\r
8f51ddb0 M	62	} \r
	63	return;\r
	64	}\r
	65	\r
	66	uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {\r
	67	uint8_t bt = 0;\r
	68	int i;\r
	69	\r
	70	for (i = 0; i < 4; i++)\r
	71	bt \|= (crypto1_bit(pcs, 0, 0) ^ BIT(data, i)) << i;\r
	72	\r
	73	return bt;\r
20f9a2a1 M	74	}\r
20f9a2a1 M	75	\r
8f51ddb0	76	// send commands\r
6a1f2d82	77	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	78	{\r
6a1f2d82	79	return mifare_sendcmd_shortex(pcs, crypted, cmd, data, answer, answer_parity, timing);
981bd429	80	}
981bd429	81
6a1f2d82	82	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	83	{
6a1f2d82	84	uint8_t dcmd[8];//, ecmd[4];
6a1f2d82	85	//uint32_t par=0;
981bd429	86
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);
	94	//Dbprintf("Data command: %02x", dcmd[0]);
	95	//Dbprintf("Data R: %02x %02x %02x %02x %02x %02x %02x", dcmd[1],dcmd[2],dcmd[3],dcmd[4],dcmd[5],dcmd[6],dcmd[7]);
	96
	97	//memcpy(ecmd, dcmd, sizeof(dcmd));
	98	ReaderTransmit(dcmd, sizeof(dcmd), NULL);
6a1f2d82	99	int len = ReaderReceive(answer, answer_parity);
981bd429	100	if(!len)
	101	{
	102	if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout.");
	103	return 2;
	104	}
	105	return len;
	106	}
	107
6a1f2d82	108	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	109	{
981bd429	110	uint8_t dcmd[4], ecmd[4];
6a1f2d82	111	uint16_t pos, res;\r
6a1f2d82	112	uint8_t par[1]; // 1 Byte parity is enough here\r
20f9a2a1 M	113	dcmd[0] = cmd;\r
	114	dcmd[1] = data;\r
	115	AppendCrc14443a(dcmd, 2);\r
	116	\r
	117	memcpy(ecmd, dcmd, sizeof(dcmd));\r
	118	\r
	119	if (crypted) {\r
6a1f2d82	120	par[0] = 0;\r
20f9a2a1 M	121	for (pos = 0; pos < 4; pos++)\r
	122	{\r
	123	ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];\r
6a1f2d82	124	par[0] \|= (((filter(pcs->odd) ^ oddparity(dcmd[pos])) & 0x01) << (7-pos));\r
20f9a2a1 M	125	} \r
20f9a2a1 M	126	\r
9492e0b0	127	ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);\r
20f9a2a1 M	128	\r
20f9a2a1 M	129	} else {\r
9492e0b0	130	ReaderTransmit(dcmd, sizeof(dcmd), timing);\r
20f9a2a1 M	131	}\r
20f9a2a1 M	132	\r
6a1f2d82	133	int len = ReaderReceive(answer, par);\r
	134	\r
	135	if (answer_parity) *answer_parity = par[0];\r
f89c7050	136	\r
4abe4f58	137	if (crypted == CRYPT_ALL) {\r
20f9a2a1 M	138	if (len == 1) {\r
	139	res = 0;\r
	140	for (pos = 0; pos < 4; pos++)\r
	141	res \|= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], pos)) << pos;\r
	142	\r
	143	answer[0] = res;\r
	144	\r
	145	} else {\r
	146	for (pos = 0; pos < len; pos++)\r
	147	{\r
	148	answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];\r
	149	}\r
	150	}\r
	151	}\r
	152	\r
	153	return len;\r
	154	}\r
	155	\r
8f51ddb0	156	// mifare commands\r
6a1f2d82	157	int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested) \r
f89c7050	158	{\r
9492e0b0	159	return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);\r
f89c7050 M	160	}\r
f89c7050 M	161	\r
6a1f2d82	162	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	163	{\r
20f9a2a1 M	164	// variables\r
4abe4f58	165	int len; \r
20f9a2a1 M	166	uint32_t pos;\r
20f9a2a1 M	167	uint8_t tmp4[4];\r
6a1f2d82	168	uint8_t par[1] = {0};\r
6a1f2d82	169	byte_t nr[4];\r
20f9a2a1 M	170	uint32_t nt, ntpp; // Supplied tag nonce\r
	171	\r
	172	uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };\r
6a1f2d82	173	uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();\r
	174	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;\r
	175	\r
4abe4f58	176	// Transmit MIFARE_CLASSIC_AUTH\r
6a1f2d82	177	len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);\r
6a1f2d82	178	if (MF_DBGLEVEL >= 4) Dbprintf("rand tag nonce len: %x", len); \r
4abe4f58	179	if (len != 4) return 1;\r
20f9a2a1	180	\r
6a1f2d82	181	// "random" reader nonce:\r
	182	nr[0] = 0x55;\r
	183	nr[1] = 0x41;\r
	184	nr[2] = 0x49;\r
	185	nr[3] = 0x92; \r
20f9a2a1 M	186	\r
	187	// Save the tag nonce (nt)\r
	188	nt = bytes_to_num(receivedAnswer, 4);\r
20f9a2a1 M	189	\r
20f9a2a1 M	190	// ----------------------------- crypto1 create\r
4abe4f58 M	191	if (isNested)\r
	192	crypto1_destroy(pcs);\r
	193	\r
	194	// Init cipher with key\r
20f9a2a1 M	195	crypto1_create(pcs, ui64Key);\r
20f9a2a1 M	196	\r
4abe4f58 M	197	if (isNested == AUTH_NESTED) {\r
	198	// decrypt nt with help of new key \r
	199	nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;\r
	200	} else {\r
	201	// Load (plain) uid^nt into the cipher\r
	202	crypto1_word(pcs, nt ^ uid, 0);\r
	203	}\r
	204	\r
	205	// some statistic\r
f397b5cc	206	if (!ntptr && (MF_DBGLEVEL >= 3))\r
f89c7050 M	207	Dbprintf("auth uid: %08x nt: %08x", uid, nt); \r
	208	\r
	209	// save Nt\r
	210	if (ntptr)\r
	211	*ntptr = nt;\r
20f9a2a1	212	\r
6a1f2d82	213	\r
4abe4f58	214	// Generate (encrypted) nr+parity by loading it into the cipher (Nr)\r
6a1f2d82	215	par[0] = 0;\r
4abe4f58 M	216	for (pos = 0; pos < 4; pos++)\r
4abe4f58 M	217	{\r
6a1f2d82	218	mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];\r
6a1f2d82	219	par[0] \|= (((filter(pcs->odd) ^ oddparity(nr[pos])) & 0x01) << (7-pos));\r
4abe4f58	220	} \r
20f9a2a1	221	\r
4abe4f58 M	222	// Skip 32 bits in pseudo random generator\r
4abe4f58 M	223	nt = prng_successor(nt,32);\r
20f9a2a1 M	224	\r
20f9a2a1 M	225	// ar+parity\r
4abe4f58 M	226	for (pos = 4; pos < 8; pos++)\r
4abe4f58 M	227	{\r
20f9a2a1	228	nt = prng_successor(nt,8);\r
4abe4f58	229	mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);\r
6a1f2d82	230	par[0] \|= (((filter(pcs->odd) ^ oddparity(nt & 0xff)) & 0x01) << (7-pos));\r
4abe4f58	231	} \r
20f9a2a1	232	\r
4abe4f58	233	// Transmit reader nonce and reader answer\r
9492e0b0	234	ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);\r
20f9a2a1	235	\r
6a1f2d82	236	// Receive 4 byte tag answer\r
6a1f2d82	237	len = ReaderReceive(receivedAnswer, receivedAnswerPar);\r
4abe4f58 M	238	if (!len)\r
4abe4f58 M	239	{\r
f397b5cc	240	if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout.");\r
20f9a2a1	241	return 2;\r
4abe4f58	242	}\r
20f9a2a1	243	\r
4abe4f58	244	memcpy(tmp4, receivedAnswer, 4);\r
20f9a2a1 M	245	ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);\r
	246	\r
	247	if (ntpp != bytes_to_num(tmp4, 4)) {\r
f397b5cc	248	if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Error card response.");\r
20f9a2a1 M	249	return 3;\r
	250	}\r
	251	\r
	252	return 0;\r
	253	}\r
	254	\r
	255	int mifare_classic_readblock(struct Crypto1State pcs, uint32_t uid, uint8_t blockNo, uint8_t blockData) \r
	256	{\r
	257	// variables\r
4abe4f58	258	int len; \r
20f9a2a1 M	259	uint8_t bt[2];\r
20f9a2a1 M	260	\r
6a1f2d82	261	uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();\r
6a1f2d82	262	uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;\r
20f9a2a1	263	\r
4abe4f58	264	// command MIFARE_CLASSIC_READBLOCK\r
6a1f2d82	265	len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r
20f9a2a1	266	if (len == 1) {\r
f397b5cc	267	if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]); \r
20f9a2a1 M	268	return 1;\r
	269	}\r
	270	if (len != 18) {\r
f397b5cc	271	if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: card timeout. len: %x", len); \r
20f9a2a1 M	272	return 2;\r
	273	}\r
	274	\r
	275	memcpy(bt, receivedAnswer + 16, 2);\r
4abe4f58	276	AppendCrc14443a(receivedAnswer, 16);\r
20f9a2a1	277	if (bt[0] != receivedAnswer[16] \|\| bt[1] != receivedAnswer[17]) {\r
f397b5cc	278	if (MF_DBGLEVEL >= 1) Dbprintf("Cmd CRC response error."); \r
20f9a2a1 M	279	return 3;\r
	280	}\r
	281	\r
	282	memcpy(blockData, receivedAnswer, 16);\r
981bd429	283	return 0;
	284	}
	285
	286	int mifare_ultra_readblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
	287	{
	288	// variables
6a1f2d82	289	uint16_t len;
981bd429	290	uint8_t bt[2];
981bd429	291
6a1f2d82	292	uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();\r
6a1f2d82	293	uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
981bd429	294
981bd429	295	// command MIFARE_CLASSIC_READBLOCK
6a1f2d82	296	len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
981bd429	297	if (len == 1) {
	298	if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
	299	return 1;
	300	}
	301	if (len != 18) {
	302	if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: card timeout. len: %x", len);
	303	return 2;
	304	}
	305
	306	memcpy(bt, receivedAnswer + 16, 2);
	307	AppendCrc14443a(receivedAnswer, 16);
	308	if (bt[0] != receivedAnswer[16] \|\| bt[1] != receivedAnswer[17]) {
	309	if (MF_DBGLEVEL >= 1) Dbprintf("Cmd CRC response error.");
	310	return 3;
	311	}
	312
	313	memcpy(blockData, receivedAnswer, 14);
	314	return 0;
	315	}
	316
	317
	318	int mifare_classic_writeblock(struct Crypto1State pcs, uint32_t uid, uint8_t blockNo, uint8_t blockData)
	319	{
	320	// variables
4abe4f58	321	int len, i; \r
20f9a2a1	322	uint32_t pos;\r
6a1f2d82	323	uint8_t par[3] = {0}; // enough for 18 Bytes to send\r
4abe4f58	324	byte_t res;\r
20f9a2a1 M	325	\r
20f9a2a1 M	326	uint8_t d_block[18], d_block_enc[18];\r
6a1f2d82	327	uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();\r
6a1f2d82	328	uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;\r
20f9a2a1	329	\r
4abe4f58	330	// command MIFARE_CLASSIC_WRITEBLOCK\r
6a1f2d82	331	len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r
20f9a2a1 M	332	\r
20f9a2a1 M	333	if ((len != 1) \|\| (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK\r
f397b5cc	334	if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]); \r
20f9a2a1 M	335	return 1;\r
	336	}\r
	337	\r
	338	memcpy(d_block, blockData, 16);\r
	339	AppendCrc14443a(d_block, 16);\r
	340	\r
	341	// crypto\r
4abe4f58 M	342	for (pos = 0; pos < 18; pos++)\r
	343	{\r
	344	d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];\r
6a1f2d82	345	par[pos>>3] \|= (((filter(pcs->odd) ^ oddparity(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));\r
4abe4f58	346	} \r
20f9a2a1	347	\r
9492e0b0	348	ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);\r
20f9a2a1	349	\r
4abe4f58	350	// Receive the response\r
6a1f2d82	351	len = ReaderReceive(receivedAnswer, receivedAnswerPar); \r
20f9a2a1 M	352	\r
	353	res = 0;\r
	354	for (i = 0; i < 4; i++)\r
	355	res \|= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;\r
	356	\r
	357	if ((len != 1) \|\| (res != 0x0A)) {\r
f397b5cc	358	if (MF_DBGLEVEL >= 1) Dbprintf("Cmd send data2 Error: %02x", res); \r
20f9a2a1 M	359	return 2;\r
	360	}\r
	361	\r
981bd429	362	return 0;
	363	}
	364
	365	int mifare_ultra_writeblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
	366	{
6a1f2d82	367	// variables
	368	uint16_t len;
	369	uint8_t par[3] = {0}; // enough for 18 parity bits
981bd429	370
6a1f2d82	371	uint8_t d_block[18];
	372	uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();\r
	373	uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
981bd429	374
6a1f2d82	375	// command MIFARE_CLASSIC_WRITEBLOCK
6a1f2d82	376	len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
981bd429	377
6a1f2d82	378	if ((len != 1) \|\| (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
	379	if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
	380	return 1;
	381	}
981bd429	382
	383	memset(d_block,'\0',18);
	384	memcpy(d_block, blockData, 16);
6a1f2d82	385	AppendCrc14443a(d_block, 16);
981bd429	386
	387	ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
	388
6a1f2d82	389	// Receive the response
6a1f2d82	390	len = ReaderReceive(receivedAnswer, receivedAnswerPar);
981bd429	391
981bd429	392	if ((len != 1) \|\| (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
6a1f2d82	393	if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
	394	return 2;
	395	}
981bd429	396
6a1f2d82	397	return 0;
981bd429	398	}
	399
	400	int mifare_ultra_special_writeblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
	401	{
6a1f2d82	402	uint16_t len;
981bd429	403
6a1f2d82	404	uint8_t d_block[8];
	405	uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();\r
	406	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
981bd429	407
6a1f2d82	408	// command MIFARE_CLASSIC_WRITEBLOCK
981bd429	409	memset(d_block,'\0',8);
	410	d_block[0]= blockNo;
	411	memcpy(d_block+1,blockData,4);
	412	AppendCrc14443a(d_block, 6);
	413
	414	//i know the data send here is correct
6a1f2d82	415	len = mifare_sendcmd_short_special(NULL, 1, 0xA2, d_block, receivedAnswer, receivedAnswerPar, NULL);
981bd429	416
6a1f2d82	417	if (receivedAnswer[0] != 0x0A) { // 0x0a - ACK
	418	if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
	419	return 1;
	420	}
	421	\r
	422	return 0;
981bd429	423	}
	424
	425	int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)
	426	{
	427	// variables
6a1f2d82	428	uint16_t len; \r
20f9a2a1 M	429	\r
20f9a2a1 M	430	// Mifare HALT\r
6a1f2d82	431	uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();\r
6a1f2d82	432	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;\r
20f9a2a1	433	\r
6a1f2d82	434	len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);\r
4abe4f58	435	if (len != 0) {\r
f397b5cc	436	if (MF_DBGLEVEL >= 1) Dbprintf("halt error. response len: %x", len); \r
20f9a2a1 M	437	return 1;\r
	438	}\r
	439	\r
981bd429	440	return 0;
	441	}
	442
	443	int mifare_ultra_halt(uint32_t uid)
	444	{
6a1f2d82	445	uint16_t len;
981bd429	446
981bd429	447	// Mifare HALT
6a1f2d82	448	uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();\r
6a1f2d82	449	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
981bd429	450
6a1f2d82	451	len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
981bd429	452	if (len != 0) {
	453	if (MF_DBGLEVEL >= 1) Dbprintf("halt error. response len: %x", len);
	454	return 1;
	455	}
	456
	457	return 0;
	458	}
	459
baeaf579	460	\r
	461	// Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),\r
	462	// plus evtl. 8 sectors with 16 blocks each (4k cards)\r
	463	uint8_t NumBlocksPerSector(uint8_t sectorNo) \r
	464	{\r
	465	if (sectorNo < 32) \r
	466	return 4;\r
	467	else\r
	468	return 16;\r
	469	}\r
	470	\r
	471	uint8_t FirstBlockOfSector(uint8_t sectorNo) \r
	472	{\r
	473	if (sectorNo < 32)\r
	474	return sectorNo * 4;\r
	475	else\r
	476	return 324 + (sectorNo - 32) 16;\r
	477	\r
	478	}\r
	479	\r
	480	\r
981bd429	481	// work with emulator memory
981bd429	482	void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
6a1f2d82	483	uint8_t* emCARD = get_bigbufptr_emlcardmem();
8f51ddb0 M	484	\r
	485	memcpy(emCARD + blockNum * 16, data, blocksCount * 16);\r
	486	}\r
	487	\r
	488	void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {\r
6a1f2d82	489	uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
8f51ddb0 M	490	\r
	491	memcpy(data, emCARD + blockNum * 16, blocksCount * 16);\r
	492	}\r
	493	\r
	494	void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {\r
6a1f2d82	495	uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
8f51ddb0 M	496	\r
	497	memcpy(data, emCARD + bytePtr, byteCount);\r
	498	}\r
	499	\r
0014cb46	500	int emlCheckValBl(int blockNum) {\r
6a1f2d82	501	uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
0014cb46 M	502	uint8_t* data = emCARD + blockNum * 16;\r
	503	\r
	504	if ((data[0] != (data[4] ^ 0xff)) \|\| (data[0] != data[8]) \|\|\r
	505	(data[1] != (data[5] ^ 0xff)) \|\| (data[1] != data[9]) \|\|\r
	506	(data[2] != (data[6] ^ 0xff)) \|\| (data[2] != data[10]) \|\|\r
	507	(data[3] != (data[7] ^ 0xff)) \|\| (data[3] != data[11]) \|\|\r
	508	(data[12] != (data[13] ^ 0xff)) \|\| (data[12] != data[14]) \|\|\r
	509	(data[12] != (data[15] ^ 0xff))\r
	510	) \r
	511	return 1;\r
	512	return 0;\r
	513	}\r
	514	\r
	515	int emlGetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {\r
6a1f2d82	516	uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
0014cb46 M	517	uint8_t* data = emCARD + blockNum * 16;\r
	518	\r
	519	if (emlCheckValBl(blockNum)) {\r
	520	return 1;\r
	521	}\r
	522	\r
	523	memcpy(blReg, data, 4);\r
	524	*blBlock = data[12];\r
	525	\r
	526	return 0;\r
	527	}\r
	528	\r
	529	int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {\r
6a1f2d82	530	uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
0014cb46 M	531	uint8_t* data = emCARD + blockNum * 16;\r
	532	\r
	533	memcpy(data + 0, &blReg, 4);\r
	534	memcpy(data + 8, &blReg, 4);\r
	535	blReg = blReg ^ 0xffffffff;\r
	536	memcpy(data + 4, &blReg, 4);\r
	537	\r
	538	data[12] = blBlock;\r
	539	data[13] = blBlock ^ 0xff;\r
	540	data[14] = blBlock;\r
	541	data[15] = blBlock ^ 0xff;\r
	542	\r
	543	return 0;\r
	544	}\r
	545	\r
8556b852 M	546	uint64_t emlGetKey(int sectorNum, int keyType) {\r
8556b852 M	547	uint8_t key[6];\r
6a1f2d82	548	uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
8556b852	549	\r
baeaf579	550	memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);\r
8556b852 M	551	return bytes_to_num(key, 6);\r
	552	}\r
	553	\r
8f51ddb0	554	void emlClearMem(void) {\r
aea4d766	555	int b;\r
8f51ddb0 M	556	\r
8f51ddb0 M	557	const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};\r
8f51ddb0	558	const uint8_t uid[] = {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};\r
6a1f2d82	559	uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
aea4d766	560	\r
6a1f2d82	561	memset(emCARD, 0, CARD_MEMORY_SIZE);\r
aea4d766	562	\r
	563	// fill sectors trailer data\r
	564	for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {\r
	565	emlSetMem((uint8_t *)trailer, b , 1);\r
	566	} \r
8f51ddb0 M	567	\r
	568	// uid\r
	569	emlSetMem((uint8_t *)uid, 0, 1);\r
	570	return;\r
	571	}\r