X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/8556b852ed769280d1b63054ab1bd08fa19b746a..488d309804afbf92e0e2ebba7e80612e84edca21:/armsrc/mifarecmd.c

diff --git a/armsrc/mifarecmd.c b/armsrc/mifarecmd.c
index fca4f69b..8f141d65 100644
--- a/armsrc/mifarecmd.c
+++ b/armsrc/mifarecmd.c
@@ -1,7 +1,10 @@
 //-----------------------------------------------------------------------------
-// Merlok - June 2011
+// Merlok - June 2011, 2012
 // Gerhard de Koning Gans - May 2008
 // Hagen Fritsch - June 2010
+// Midnitesnake - Dec 2013
+// Andy Davies  - Apr 2014
+// Iceman - May 2014
 //
 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
 // at your option, any later version. See the LICENSE.txt file for the text of
@@ -12,9 +15,17 @@
 
 #include "mifarecmd.h"
 #include "apps.h"
+#include "util.h"
+#include "parity.h"
+#include "crc.h"
+
+// the block number for the ISO14443-4 PCB
+uint8_t pcb_blocknum = 0;
+// Deselect card by sending a s-block. the crc is precalced for speed
+static  uint8_t deselect_cmd[] = {0xc2,0xe0,0xb4};
 
 //-----------------------------------------------------------------------------
-// Select, Authenticaate, Read an MIFARE tag. 
+// Select, Authenticate, Read a MIFARE tag. 
 // read block
 //-----------------------------------------------------------------------------
 void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
@@ -28,17 +39,15 @@ void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 	// variables
 	byte_t isOK = 0;
 	byte_t dataoutbuf[16];
-	uint8_t uid[8];
+	uint8_t uid[10];
 	uint32_t cuid;
 	struct Crypto1State mpcs = {0, 0};
 	struct Crypto1State *pcs;
 	pcs = &mpcs;
 
-	// clear trace
-	iso14a_clear_tracelen();
-//	iso14a_set_tracing(false);
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 
-	iso14443a_setup();
+	clear_trace();
 
 	LED_A_ON();
 	LED_B_OFF();
@@ -46,22 +55,22 @@ void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 
 	while (true) {
 		if(!iso14443a_select_card(uid, NULL, &cuid)) {
-		if (MF_DBGLEVEL >= 1)	Dbprintf("Can't select card");
+			if (MF_DBGLEVEL >= 1)	Dbprintf("Can't select card");
 			break;
 		};
 
 		if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
-		if (MF_DBGLEVEL >= 1)	Dbprintf("Auth error");
+			if (MF_DBGLEVEL >= 1)	Dbprintf("Auth error");
 			break;
 		};
 		
 		if(mifare_classic_readblock(pcs, cuid, blockNo, dataoutbuf)) {
-		if (MF_DBGLEVEL >= 1)	Dbprintf("Read block error");
+			if (MF_DBGLEVEL >= 1)	Dbprintf("Read block error");
 			break;
 		};
 
 		if(mifare_classic_halt(pcs, cuid)) {
-		if (MF_DBGLEVEL >= 1)	Dbprintf("Halt error");
+			if (MF_DBGLEVEL >= 1)	Dbprintf("Halt error");
 			break;
 		};
 		
@@ -74,28 +83,108 @@ void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 	
 	if (MF_DBGLEVEL >= 2)	DbpString("READ BLOCK FINISHED");
 
-	// add trace trailer
-	memset(uid, 0x44, 4);
-	LogTrace(uid, 4, 0, 0, TRUE);
-
-	UsbCommand ack = {CMD_ACK, {isOK, 0, 0}};
-	memcpy(ack.d.asBytes, dataoutbuf, 16);
-	
 	LED_B_ON();
-	UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
+	cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
 	LED_B_OFF();
 
-
-  // Thats it...
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 	LEDsoff();
-//  iso14a_set_tracing(TRUE);
+}
+
+void MifareUC_Auth(uint8_t arg0, uint8_t *keybytes){
+
+	bool turnOffField = (arg0 == 1);
+
+	LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
+
+	clear_trace();
+
+	if(!iso14443a_select_card(NULL, NULL, NULL)) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
+		OnError(0);
+		return;
+	};
+	
+	if(!mifare_ultra_auth(keybytes)){
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed");
+		OnError(1);
+		return;
+	}
+
+	if (turnOffField) {
+		FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+		LEDsoff();
+	}
+	cmd_send(CMD_ACK,1,0,0,0,0);
+}
+
+// Arg0 = BlockNo,
+// Arg1 = UsePwd bool
+// datain = PWD bytes,
+void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
+{
+	uint8_t blockNo = arg0;
+	byte_t dataout[16] = {0x00};
+	bool useKey = (arg1 == 1); //UL_C
+	bool usePwd = (arg1 == 2); //UL_EV1/NTAG
+
+	LEDsoff();
+	LED_A_ON();
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
+
+	clear_trace();
+
+	int len = iso14443a_select_card(NULL, NULL, NULL);
+	if(!len) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);
+		OnError(1);
+		return;
+	}
+
+	// UL-C authentication
+	if ( useKey ) {
+		uint8_t key[16] = {0x00};
+		memcpy(key, datain, sizeof(key) );
+
+		if ( !mifare_ultra_auth(key) ) {
+			OnError(1);
+			return;
+		}
+	}
+
+	// UL-EV1 / NTAG authentication
+	if ( usePwd ) {
+		uint8_t pwd[4] = {0x00};
+		memcpy(pwd, datain, 4);
+		uint8_t pack[4] = {0,0,0,0};
+		if (!mifare_ul_ev1_auth(pwd, pack)) {
+			OnError(1);
+			return;
+		}
+	}	
+
+	if( mifare_ultra_readblock(blockNo, dataout) ) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block error");
+		OnError(2);
+		return;
+	}
+
+	if( mifare_ultra_halt() ) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
+		OnError(3);
+		return;
+	}
+
+	cmd_send(CMD_ACK,1,0,0,dataout,16);
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+	LEDsoff();
 }
 
 //-----------------------------------------------------------------------------
-// Select, Authenticaate, Read an MIFARE tag. 
-// read sector (data = 4 x 16 bytes = 64 bytes)
+// Select, Authenticate, Read a MIFARE tag. 
+// read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
 //-----------------------------------------------------------------------------
 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 {
@@ -107,90 +196,158 @@ void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 	
 	// variables
 	byte_t isOK = 0;
-	byte_t dataoutbuf[16 * 4];
-	uint8_t uid[8];
+	byte_t dataoutbuf[16 * 16];
+	uint8_t uid[10];
 	uint32_t cuid;
 	struct Crypto1State mpcs = {0, 0};
 	struct Crypto1State *pcs;
 	pcs = &mpcs;
 
-	// clear trace
-	iso14a_clear_tracelen();
-//	iso14a_set_tracing(false);
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 
-	iso14443a_setup();
+	clear_trace();
 
 	LED_A_ON();
 	LED_B_OFF();
 	LED_C_OFF();
 
-	while (true) {
-		if(!iso14443a_select_card(uid, NULL, &cuid)) {
+	isOK = 1;
+	if(!iso14443a_select_card(uid, NULL, &cuid)) {
+		isOK = 0;
 		if (MF_DBGLEVEL >= 1)	Dbprintf("Can't select card");
-			break;
-		};
+	}
 
-		if(mifare_classic_auth(pcs, cuid, sectorNo * 4, keyType, ui64Key, AUTH_FIRST)) {
+	
+	if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
+		isOK = 0;
 		if (MF_DBGLEVEL >= 1)	Dbprintf("Auth error");
+	}
+	
+	for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
+		if(mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf + 16 * blockNo)) {
+			isOK = 0;
+			if (MF_DBGLEVEL >= 1)	Dbprintf("Read sector %2d block %2d error", sectorNo, blockNo);
 			break;
-		};
-		
-		if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 0, dataoutbuf + 16 * 0)) {
-		if (MF_DBGLEVEL >= 1)	Dbprintf("Read block 0 error");
-			break;
-		};
-		if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 1, dataoutbuf + 16 * 1)) {
-		if (MF_DBGLEVEL >= 1)	Dbprintf("Read block 1 error");
-			break;
-		};
-		if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 2, dataoutbuf + 16 * 2)) {
-		if (MF_DBGLEVEL >= 1)	Dbprintf("Read block 2 error");
-			break;
-		};
-		if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 3, dataoutbuf + 16 * 3)) {
-		if (MF_DBGLEVEL >= 1)	Dbprintf("Read block 3 error");
-			break;
-		};
+		}
+	}
 		
-		if(mifare_classic_halt(pcs, cuid)) {
+	if(mifare_classic_halt(pcs, cuid)) {
 		if (MF_DBGLEVEL >= 1)	Dbprintf("Halt error");
-			break;
-		};
-
-		isOK = 1;
-		break;
 	}
-	
+
 	//  ----------------------------- crypto1 destroy
 	crypto1_destroy(pcs);
 	
 	if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
 
-	// add trace trailer
-	memset(uid, 0x44, 4);
-	LogTrace(uid, 4, 0, 0, TRUE);
-
-	UsbCommand ack = {CMD_ACK, {isOK, 0, 0}};
-	memcpy(ack.d.asBytes, dataoutbuf, 16 * 2);
-	
 	LED_B_ON();
-	UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
-
-	SpinDelay(100);
-	
-	memcpy(ack.d.asBytes, dataoutbuf + 16 * 2, 16 * 2);
-	UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
-	LED_B_OFF();	
+	cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16*NumBlocksPerSector(sectorNo));
+	LED_B_OFF();
 
 	// Thats it...
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 	LEDsoff();
-//  iso14a_set_tracing(TRUE);
+}
+
+// arg0 = blockNo (start)
+// arg1 = Pages (number of blocks)
+// arg2 = useKey
+// datain = KEY bytes
+void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
+{
+	LEDsoff();
+	LED_A_ON();
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
+
+	// free eventually allocated BigBuf memory
+	BigBuf_free();
+	clear_trace();
+
+	// params
+	uint8_t blockNo = arg0;
+	uint16_t blocks = arg1;
+	bool useKey = (arg2 == 1); //UL_C
+	bool usePwd = (arg2 == 2); //UL_EV1/NTAG
+	uint32_t countblocks = 0;
+	uint8_t *dataout = BigBuf_malloc(CARD_MEMORY_SIZE);
+	if (dataout == NULL){
+		Dbprintf("out of memory");
+		OnError(1);
+		return;
+	}
+
+	int len = iso14443a_select_card(NULL, NULL, NULL);
+	if (!len) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%d)",len);
+		OnError(1);
+		return;
+	}
+
+	// UL-C authentication
+	if ( useKey ) {
+		uint8_t key[16] = {0x00};
+		memcpy(key, datain, sizeof(key) );
+
+		if ( !mifare_ultra_auth(key) ) {
+			OnError(1);
+			return;
+		}
+	}
 
+	// UL-EV1 / NTAG authentication
+	if (usePwd) {
+		uint8_t pwd[4] = {0x00};
+		memcpy(pwd, datain, sizeof(pwd));
+		uint8_t pack[4] = {0,0,0,0};
+
+		if (!mifare_ul_ev1_auth(pwd, pack)){
+			OnError(1);
+			return;			
+		}
+	}
+
+	for (int i = 0; i < blocks; i++){
+		if ((i*4) + 4 >= CARD_MEMORY_SIZE) {
+			Dbprintf("Data exceeds buffer!!");
+			break;
+		}
+	
+		len = mifare_ultra_readblock(blockNo + i, dataout + 4 * i);
+
+		if (len) {
+			if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
+			// if no blocks read - error out
+			if (i==0){
+				OnError(2);
+				return;
+			} else {
+				//stop at last successful read block and return what we got
+				break;
+			}
+		} else {
+			countblocks++;
+		}
+	}
+
+	len = mifare_ultra_halt();
+	if (len) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
+		OnError(3);
+		return;
+	}
+
+	if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Blocks read %d", countblocks);
+
+	countblocks *= 4;
+
+	cmd_send(CMD_ACK, 1, countblocks, BigBuf_max_traceLen(), 0, 0);
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+	LEDsoff();
+	BigBuf_free();
 }
 
 //-----------------------------------------------------------------------------
-// Select, Authenticaate, Read an MIFARE tag. 
+// Select, Authenticate, Write a MIFARE tag. 
 // read block
 //-----------------------------------------------------------------------------
 void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
@@ -206,17 +363,15 @@ void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 	
 	// variables
 	byte_t isOK = 0;
-	uint8_t uid[8];
+	uint8_t uid[10];
 	uint32_t cuid;
 	struct Crypto1State mpcs = {0, 0};
 	struct Crypto1State *pcs;
 	pcs = &mpcs;
 
-	// clear trace
-	iso14a_clear_tracelen();
-//  iso14a_set_tracing(false);
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 
-	iso14443a_setup();
+	clear_trace();
 
 	LED_A_ON();
 	LED_B_OFF();
@@ -252,209 +407,397 @@ void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 	
 	if (MF_DBGLEVEL >= 2)	DbpString("WRITE BLOCK FINISHED");
 
-	// add trace trailer
-	memset(uid, 0x44, 4);
-	LogTrace(uid, 4, 0, 0, TRUE);
-
-	UsbCommand ack = {CMD_ACK, {isOK, 0, 0}};
-	
 	LED_B_ON();
-	UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
-	LED_B_OFF();	
+	cmd_send(CMD_ACK,isOK,0,0,0,0);
+	LED_B_OFF();
 
 
 	// Thats it...
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 	LEDsoff();
-//  iso14a_set_tracing(TRUE);
+}
+
+/* // Command not needed but left for future testing 
+void MifareUWriteBlockCompat(uint8_t arg0, uint8_t *datain)
+{
+	uint8_t blockNo = arg0;
+	byte_t blockdata[16] = {0x00};
+
+	memcpy(blockdata, datain, 16);
+
+	uint8_t uid[10] = {0x00};
+
+	LED_A_ON(); LED_B_OFF(); LED_C_OFF();
+
+	clear_trace();
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
+
+	if(!iso14443a_select_card(uid, NULL, NULL)) {
+		if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
+		OnError(0);
+		return;
+	};
+
+	if(mifare_ultra_writeblock_compat(blockNo, blockdata)) {
+		if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
+		OnError(0);
+		return;	};
+
+	if(mifare_ultra_halt()) {
+		if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
+		OnError(0);
+		return;
+	};
+
+	if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
+
+	cmd_send(CMD_ACK,1,0,0,0,0);
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+	LEDsoff();
+}
+*/
+
+// Arg0   : Block to write to.
+// Arg1   : 0 = use no authentication.
+//          1 = use 0x1A authentication.
+//          2 = use 0x1B authentication.
+// datain : 4 first bytes is data to be written.
+//        : 4/16 next bytes is authentication key.
+void MifareUWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
+{
+	uint8_t blockNo = arg0;
+	bool useKey = (arg1 == 1); //UL_C
+	bool usePwd = (arg1 == 2); //UL_EV1/NTAG
+	byte_t blockdata[4] = {0x00};
+
+	memcpy(blockdata, datain,4);
+	
+	LEDsoff();
+	LED_A_ON();
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
+
+	clear_trace();
+
+	if(!iso14443a_select_card(NULL, NULL, NULL)) {
+		if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
+		OnError(0);
+		return;
+	};
+
+	// UL-C authentication
+	if ( useKey ) {
+		uint8_t key[16] = {0x00};
+		memcpy(key, datain+4, sizeof(key) );
+
+		if ( !mifare_ultra_auth(key) ) {
+			OnError(1);
+			return;
+		}
+	}
+	
+	// UL-EV1 / NTAG authentication
+	if (usePwd) {
+		uint8_t pwd[4] = {0x00};
+		memcpy(pwd, datain+4, 4);
+		uint8_t pack[4] = {0,0,0,0};
+		if (!mifare_ul_ev1_auth(pwd, pack)) {
+			OnError(1);
+			return;
+		}
+	}
+
+	if(mifare_ultra_writeblock(blockNo, blockdata)) {
+		if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
+		OnError(0);
+		return;
+	};
 
+	if(mifare_ultra_halt()) {
+		if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
+		OnError(0);
+		return;
+	};
+
+	if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
+
+	cmd_send(CMD_ACK,1,0,0,0,0);
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+	LEDsoff();
+}
+
+void MifareUSetPwd(uint8_t arg0, uint8_t *datain){
+	
+	uint8_t pwd[16] = {0x00};
+	byte_t blockdata[4] = {0x00};
+	
+	memcpy(pwd, datain, 16);
+	
+	LED_A_ON(); LED_B_OFF(); LED_C_OFF();
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
+
+	clear_trace();
+
+	if(!iso14443a_select_card(NULL, NULL, NULL)) {
+		if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
+		OnError(0);
+		return;
+	};
+
+	blockdata[0] = pwd[7];
+	blockdata[1] = pwd[6];
+	blockdata[2] = pwd[5];
+	blockdata[3] = pwd[4];
+	if(mifare_ultra_writeblock( 44, blockdata)) {
+		if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
+		OnError(44);
+		return;
+	};
+
+	blockdata[0] = pwd[3];
+	blockdata[1] = pwd[2];
+	blockdata[2] = pwd[1];
+	blockdata[3] = pwd[0];
+	if(mifare_ultra_writeblock( 45, blockdata)) {
+		if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
+		OnError(45);
+		return;
+	};
+
+	blockdata[0] = pwd[15];
+	blockdata[1] = pwd[14];
+	blockdata[2] = pwd[13];
+	blockdata[3] = pwd[12];
+	if(mifare_ultra_writeblock( 46, blockdata)) {
+		if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
+		OnError(46);
+		return;
+	};
+
+	blockdata[0] = pwd[11];
+	blockdata[1] = pwd[10];
+	blockdata[2] = pwd[9];
+	blockdata[3] = pwd[8];
+	if(mifare_ultra_writeblock( 47, blockdata)) {
+		if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
+		OnError(47);
+		return;
+	};	
+
+	if(mifare_ultra_halt()) {
+		if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
+		OnError(0);
+		return;
+	};
+
+	cmd_send(CMD_ACK,1,0,0,0,0);
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+	LEDsoff();
 }
 
 // Return 1 if the nonce is invalid else return 0
-int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, byte_t * parity) {
-	return ((oddparity((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
-	(oddparity((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
-	(oddparity((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
+int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_t *parity) {
+	return ((oddparity8((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity8((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
+	(oddparity8((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity8((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
+	(oddparity8((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity8((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
 }
 
+
 //-----------------------------------------------------------------------------
 // MIFARE nested authentication. 
 // 
 //-----------------------------------------------------------------------------
-void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain)
+void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain)
 {
 	// params
-	uint8_t blockNo = arg0;
-	uint8_t keyType = arg1;
-	uint8_t targetBlockNo = arg2 & 0xff;
-	uint8_t targetKeyType = (arg2 >> 8) & 0xff;
+	uint8_t blockNo = arg0 & 0xff;
+	uint8_t keyType = (arg0 >> 8) & 0xff;
+	uint8_t targetBlockNo = arg1 & 0xff;
+	uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 	uint64_t ui64Key = 0;
 
 	ui64Key = bytes_to_num(datain, 6);
 	
 	// variables
-	int rtr, i, j, m, len;
-	int davg, dmin, dmax;
-	uint8_t uid[8];
-	uint32_t cuid, nt1, nt2, nttmp, nttest, par, ks1;
+	uint16_t rtr, i, j, len;
+	uint16_t davg;
+	static uint16_t dmin, dmax;
+	uint8_t uid[10];
+	uint32_t cuid, nt1, nt2, nttmp, nttest, ks1;
+	uint8_t par[1];
+	uint32_t target_nt[2], target_ks[2];
+	
 	uint8_t par_array[4];
-	nestedVector nvector[NES_MAX_INFO + 1][10];
-	int nvectorcount[NES_MAX_INFO + 1];
-	int ncount = 0;
-	UsbCommand ack = {CMD_ACK, {0, 0, 0}};
+	uint16_t ncount = 0;
 	struct Crypto1State mpcs = {0, 0};
 	struct Crypto1State *pcs;
 	pcs = &mpcs;
-	uint8_t* receivedAnswer = mifare_get_bigbufptr();
+	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 
-	//init
-	for (i = 0; i < NES_MAX_INFO + 1; i++) nvectorcount[i] = 11;  //  11 - empty block;
-	
-	// clear trace
-	iso14a_clear_tracelen();
-  iso14a_set_tracing(false);
-	
-	iso14443a_setup();
+	uint32_t auth1_time, auth2_time;
+	static uint16_t delta_time;
 
 	LED_A_ON();
-	LED_B_ON();
 	LED_C_OFF();
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
+
+	// free eventually allocated BigBuf memory
+	BigBuf_free();
 
-  FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-  SpinDelay(200);
+	if (calibrate) clear_trace();
+	set_tracing(true);
 	
-	davg = dmax = 0;
-	dmin = 2000;
+	// statistics on nonce distance
+	int16_t isOK = 0;
+	#define NESTED_MAX_TRIES 12
+	uint16_t unsuccessfull_tries = 0;
+	if (calibrate) {	// for first call only. Otherwise reuse previous calibration
+		LED_B_ON();
+		WDT_HIT();
+
+		davg = dmax = 0;
+		dmin = 2000;
+		delta_time = 0;
+		
+		for (rtr = 0; rtr < 17; rtr++) {
 
-	// test nonce distance
-	for (rtr = 0; rtr < 10; rtr++) {
-    FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-    SpinDelay(100);
-    FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
+			// Test if the action was cancelled
+			if(BUTTON_PRESS()) {
+				isOK = -2;
+				break;
+			}
 
-    // Test if the action was cancelled
-    if(BUTTON_PRESS()) {
-      break;
-    }
+			// prepare next select. No need to power down the card.
+			if(mifare_classic_halt(pcs, cuid)) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("Nested: Halt error");
+				rtr--;
+				continue;
+			}
 
-		if(!iso14443a_select_card(uid, NULL, &cuid)) {
-			if (MF_DBGLEVEL >= 1)	Dbprintf("Can't select card");
-			break;
-		};
-		
-		if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1)) {
-			if (MF_DBGLEVEL >= 1)	Dbprintf("Auth1 error");
-			break;
-		};
+			if(!iso14443a_select_card(uid, NULL, &cuid)) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("Nested: Can't select card");
+				rtr--;
+				continue;
+			};
 
-		if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2)) {
-			if (MF_DBGLEVEL >= 1)	Dbprintf("Auth2 error");
-			break;
-		};
-		
-		nttmp = prng_successor(nt1, 500);
-		for (i = 501; i < 2000; i++) {
-			nttmp = prng_successor(nttmp, 1);
-			if (nttmp == nt2) break;
-		}
-		
-		if (i != 2000) {
-			davg += i;
-			if (dmin > i) dmin = i;
-			if (dmax < i) dmax = i;
-			if (MF_DBGLEVEL >= 4)	Dbprintf("r=%d nt1=%08x nt2=%08x distance=%d", rtr, nt1, nt2, i);
-		}
-	}
-	
-	if (rtr == 0)	return;
+			auth1_time = 0;
+			if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("Nested: Auth1 error");
+				rtr--;
+				continue;
+			};
 
-	davg = davg / rtr;
-	if (MF_DBGLEVEL >= 3)	Dbprintf("distance: min=%d max=%d avg=%d", dmin, dmax, davg);
+			if (delta_time) {
+				auth2_time = auth1_time + delta_time;
+			} else {
+				auth2_time = 0;
+			}
+			if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("Nested: Auth2 error");
+				rtr--;
+				continue;
+			};
 
-	LED_B_OFF();
+			nttmp = prng_successor(nt1, 100);				//NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
+			for (i = 101; i < 1200; i++) {
+				nttmp = prng_successor(nttmp, 1);
+				if (nttmp == nt2) break;
+			}
+
+			if (i != 1200) {
+				if (rtr != 0) {
+					davg += i;
+					dmin = MIN(dmin, i);
+					dmax = MAX(dmax, i);
+				}
+				else {
+					delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
+				}
+				if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
+			} else {
+				unsuccessfull_tries++;
+				if (unsuccessfull_tries > NESTED_MAX_TRIES) {	// card isn't vulnerable to nested attack (random numbers are not predictable)
+					isOK = -3;
+				}
+			}
+		}
+
+		davg = (davg + (rtr - 1)/2) / (rtr - 1);
+		
+		if (MF_DBGLEVEL >= 3) Dbprintf("rtr=%d isOK=%d min=%d max=%d avg=%d, delta_time=%d", rtr, isOK, dmin, dmax, davg, delta_time);
 
-//  -------------------------------------------------------------------------------------------------	
+		dmin = davg - 2;
+		dmax = davg + 2;
+		
+		LED_B_OFF();
+	
+	}
+	//  -------------------------------------------------------------------------------------------------	
 	
 	LED_C_ON();
 
 	//  get crypted nonces for target sector
-	for (rtr = 0; rtr < NS_RETRIES_GETNONCE; rtr++) {
-	if (MF_DBGLEVEL >= 4)			Dbprintf("------------------------------");
-
-		FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-    SpinDelay(100);
-    FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
-
-    // Test if the action was cancelled
-    if(BUTTON_PRESS()) {
-      break;
-    }
+	for(i=0; i < 2 && !isOK; i++) { // look for exactly two different nonces
 
-		if(!iso14443a_select_card(uid, NULL, &cuid)) {
-			if (MF_DBGLEVEL >= 1)	Dbprintf("Can't select card");
-			break;
-		};
+		target_nt[i] = 0;
+		while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
 		
-		if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1)) {
-			if (MF_DBGLEVEL >= 1)	Dbprintf("Auth1 error");
-			break;
-		};
+			// prepare next select. No need to power down the card.
+			if(mifare_classic_halt(pcs, cuid)) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("Nested: Halt error");
+				continue;
+			}
 
-		// nested authentication
-		len = mifare_sendcmd_shortex(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, &par);
-		if (len != 4) {
-			if (MF_DBGLEVEL >= 1)	Dbprintf("Auth2 error len=%d", len);
-			break;
-		};
-	
-		nt2 = bytes_to_num(receivedAnswer, 4);		
-		if (MF_DBGLEVEL >= 4)	Dbprintf("r=%d nt1=%08x nt2enc=%08x nt2par=%08x", rtr, nt1, nt2, par);
-		
-		// Parity validity check
-		for (i = 0; i < 4; i++) {
-			par_array[i] = (oddparity(receivedAnswer[i]) != ((par & 0x08) >> 3));
-			par = par << 1;
-		}
+			if(!iso14443a_select_card(uid, NULL, &cuid)) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("Nested: Can't select card");
+				continue;
+			};
 		
-		ncount = 0;
-		for (m = dmin - NS_TOLERANCE; m < dmax + NS_TOLERANCE; m++) {
-			nttest = prng_successor(nt1, m);
-			ks1 = nt2 ^ nttest;
-
-			if (valid_nonce(nttest, nt2, ks1, par_array) && (ncount < 11)){
-				
-				nvector[NES_MAX_INFO][ncount].nt = nttest;
-				nvector[NES_MAX_INFO][ncount].ks1 = ks1;
-				ncount++;
-				nvectorcount[NES_MAX_INFO] = ncount;
-				if (MF_DBGLEVEL >= 4)	Dbprintf("valid m=%d ks1=%08x nttest=%08x", m, ks1, nttest);
-			}
+			auth1_time = 0;
+			if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("Nested: Auth1 error");
+				continue;
+			};
 
-		}
+			// nested authentication
+			auth2_time = auth1_time + delta_time;
+			len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
+			if (len != 4) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("Nested: Auth2 error len=%d", len);
+				continue;
+			};
 		
-		// select vector with length less than got
-		if (nvectorcount[NES_MAX_INFO] != 0) {
-			m = NES_MAX_INFO;
+			nt2 = bytes_to_num(receivedAnswer, 4);		
+			if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
 			
-			for (i = 0; i < NES_MAX_INFO; i++)
-				if (nvectorcount[i] > 10) {
-					m = i;
-					break;
-				}
-				
-			if (m == NES_MAX_INFO)
-				for (i = 0; i < NES_MAX_INFO; i++)
-					if (nvectorcount[NES_MAX_INFO] < nvectorcount[i]) {
-						m = i;
+			// Parity validity check
+			for (j = 0; j < 4; j++) {
+				par_array[j] = (oddparity8(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
+			}
+			
+			ncount = 0;
+			nttest = prng_successor(nt1, dmin - 1);
+			for (j = dmin; j < dmax + 1; j++) {
+				nttest = prng_successor(nttest, 1);
+				ks1 = nt2 ^ nttest;
+
+				if (valid_nonce(nttest, nt2, ks1, par_array)){
+					if (ncount > 0) { 		// we are only interested in disambiguous nonces, try again
+						if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
+						target_nt[i] = 0;
 						break;
 					}
-					
-			if (m != NES_MAX_INFO) {
-				for (i = 0; i < nvectorcount[m]; i++) {
-					nvector[m][i] = nvector[NES_MAX_INFO][i];
+					target_nt[i] = nttest;
+					target_ks[i] = ks1;
+					ncount++;
+					if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
+						target_nt[i] = 0;
+						if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
+						break;
+					}
+					if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 				}
-				nvectorcount[m] = nvectorcount[NES_MAX_INFO];
 			}
+			if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 		}
 	}
 
@@ -463,71 +806,40 @@ void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain)
 	//  ----------------------------- crypto1 destroy
 	crypto1_destroy(pcs);
 	
-	// add trace trailer
-	memset(uid, 0x44, 4);
-	LogTrace(uid, 4, 0, 0, TRUE);
-
-	for (i = 0; i < NES_MAX_INFO; i++) {
-		if (nvectorcount[i] > 10) continue;
-		
-		for (j = 0; j < nvectorcount[i]; j += 5) {
-			ncount = nvectorcount[i] - j;
-			if (ncount > 5) ncount = 5; 
-
-			ack.arg[0] = 0; // isEOF = 0
-			ack.arg[1] = ncount;
-			ack.arg[2] = targetBlockNo + (targetKeyType * 0x100);
-			memset(ack.d.asBytes, 0x00, sizeof(ack.d.asBytes));
-			
-			memcpy(ack.d.asBytes, &cuid, 4);
-			for (m = 0; m < ncount; m++) {
-				memcpy(ack.d.asBytes + 8 + m * 8 + 0, &nvector[i][m + j].nt, 4);
-				memcpy(ack.d.asBytes + 8 + m * 8 + 4, &nvector[i][m + j].ks1, 4);
-			}
-	
-			LED_B_ON();
-			SpinDelay(100);
-			UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
-			LED_B_OFF();	
-		}
-	}
-
-	// finalize list
-	ack.arg[0] = 1; // isEOF = 1
-	ack.arg[1] = 0;
-	ack.arg[2] = 0;
-	memset(ack.d.asBytes, 0x00, sizeof(ack.d.asBytes));
+	byte_t buf[4 + 4 * 4];
+	memcpy(buf, &cuid, 4);
+	memcpy(buf+4, &target_nt[0], 4);
+	memcpy(buf+8, &target_ks[0], 4);
+	memcpy(buf+12, &target_nt[1], 4);
+	memcpy(buf+16, &target_ks[1], 4);
 	
 	LED_B_ON();
-	SpinDelay(300);
-	UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
-	LED_B_OFF();	
+	cmd_send(CMD_ACK, isOK, 0, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
+	LED_B_OFF();
 
-	if (MF_DBGLEVEL >= 4)	DbpString("NESTED FINISHED");
+	if (MF_DBGLEVEL >= 3)	DbpString("NESTED FINISHED");
 
-	// Thats it...
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 	LEDsoff();
-	
-  iso14a_set_tracing(TRUE);
 }
 
 //-----------------------------------------------------------------------------
-// MIFARE check keys. key count up to 8. 
+// MIFARE check keys. key count up to 85. 
 // 
 //-----------------------------------------------------------------------------
-void MifareChkKeys(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
+void MifareChkKeys(uint16_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 {
   // params
-	uint8_t blockNo = arg0;
-	uint8_t keyType = arg1;
+	uint8_t blockNo = arg0 & 0xff;
+	uint8_t keyType = (arg0 >> 8) & 0xff;
+	bool clearTrace = arg1;
 	uint8_t keyCount = arg2;
 	uint64_t ui64Key = 0;
 	
 	// variables
 	int i;
 	byte_t isOK = 0;
-	uint8_t uid[8];
+	uint8_t uid[10];
 	uint32_t cuid;
 	struct Crypto1State mpcs = {0, 0};
 	struct Crypto1State *pcs;
@@ -537,24 +849,21 @@ void MifareChkKeys(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 	int OLD_MF_DBGLEVEL = MF_DBGLEVEL;	
 	MF_DBGLEVEL = MF_DBG_NONE;
 	
-	// clear trace
-	iso14a_clear_tracelen();
-  iso14a_set_tracing(TRUE);
-
-	iso14443a_setup();
-
 	LED_A_ON();
 	LED_B_OFF();
 	LED_C_OFF();
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
+
+	if (clearTrace) clear_trace();
+	set_tracing(TRUE);
 
-	SpinDelay(300);
 	for (i = 0; i < keyCount; i++) {
-		FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-    SpinDelay(100);
-    FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
+		if(mifare_classic_halt(pcs, cuid)) {
+			if (MF_DBGLEVEL >= 1)	Dbprintf("ChkKeys: Halt error");
+		}
 
 		if(!iso14443a_select_card(uid, NULL, &cuid)) {
-			if (OLD_MF_DBGLEVEL >= 1)	Dbprintf("Can't select card");
+			if (OLD_MF_DBGLEVEL >= 1)	Dbprintf("ChkKeys: Can't select card");
 			break;
 		};
 
@@ -570,18 +879,10 @@ void MifareChkKeys(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 	//  ----------------------------- crypto1 destroy
 	crypto1_destroy(pcs);
 	
-	// add trace trailer
-	memset(uid, 0x44, 4);
-	LogTrace(uid, 4, 0, 0, TRUE);
-
-	UsbCommand ack = {CMD_ACK, {isOK, 0, 0}};
-	if (isOK) memcpy(ack.d.asBytes, datain + i * 6, 6);
-	
 	LED_B_ON();
-	UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
+    cmd_send(CMD_ACK,isOK,0,0,datain + i * 6,6);
 	LED_B_OFF();
 
-  // Thats it...
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 	LEDsoff();
 
@@ -601,22 +902,28 @@ void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datai
 //-----------------------------------------------------------------------------
 // Work with emulator memory
 // 
+// Note: we call FpgaDownloadAndGo(FPGA_BITSTREAM_HF) here although FPGA is not
+// involved in dealing with emulator memory. But if it is called later, it might
+// destroy the Emulator Memory.
 //-----------------------------------------------------------------------------
+
 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
+	FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 	emlClearMem();
 }
 
 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
+	FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 	emlSetMem(datain, arg0, arg1); // data, block num, blocks count
 }
 
 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
-	UsbCommand ack = {CMD_ACK, {arg0, arg1, 0}};
-
-	emlGetMem(ack.d.asBytes, arg0, arg1); // data, block num, blocks count
+	FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
+	byte_t buf[USB_CMD_DATA_SIZE];
+	emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
 
 	LED_B_ON();
-	UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
+	cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
 	LED_B_OFF();
 }
 
@@ -625,8 +932,7 @@ void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain)
 // 
 //-----------------------------------------------------------------------------
 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
-	int i;
-	uint8_t sectorNo = 0;
+	uint8_t numSectors = arg0;
 	uint8_t keyType = arg1;
 	uint64_t ui64Key = 0;
 	uint32_t cuid;
@@ -636,81 +942,376 @@ void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datai
 
 	// variables
 	byte_t dataoutbuf[16];
-	uint8_t uid[8];
-
-	// clear trace
-	iso14a_clear_tracelen();
-	iso14a_set_tracing(false);
-	
-	iso14443a_setup();
+	byte_t dataoutbuf2[16];
+	uint8_t uid[10];
 
 	LED_A_ON();
 	LED_B_OFF();
 	LED_C_OFF();
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 	
-	while (true) {
-		if(!iso14443a_select_card(uid, NULL, &cuid)) {
-			if (MF_DBGLEVEL >= 1)	Dbprintf("Can't select card");
-			break;
-		};
+	clear_trace();
+	set_tracing(false);
+	
+	bool isOK = true;
+
+	if(!iso14443a_select_card(uid, NULL, &cuid)) {
+		isOK = false;
+		if (MF_DBGLEVEL >= 1)	Dbprintf("Can't select card");
+	}
 		
-		for (i = 0; i < 16; i++) {
-			sectorNo = i;
-			ui64Key = emlGetKey(sectorNo, keyType);
-	
-			if (!i){
-				if(mifare_classic_auth(pcs, cuid, sectorNo * 4, keyType, ui64Key, AUTH_FIRST)) {
-					if (MF_DBGLEVEL >= 1)	Dbprintf("Sector[%d]. Auth error", i);
-					break;
-				}
-			} else {
-				if(mifare_classic_auth(pcs, cuid, sectorNo * 4, keyType, ui64Key, AUTH_NESTED)) {
-					if (MF_DBGLEVEL >= 1)	Dbprintf("Sector[%d]. Auth nested error", i);
-					break;
-				}
+	for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
+		ui64Key = emlGetKey(sectorNo, keyType);
+		if (sectorNo == 0){
+			if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
+				isOK = false;
+				if (MF_DBGLEVEL >= 1)	Dbprintf("Sector[%2d]. Auth error", sectorNo);
+				break;
+			}
+		} else {
+			if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
+				isOK = false;
+				if (MF_DBGLEVEL >= 1)	Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
+				break;
 			}
+		}
 		
-			if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 0, dataoutbuf)) {
-				if (MF_DBGLEVEL >= 1)	Dbprintf("Read block 0 error");
+		for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
+			if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
+				isOK = false;
+				if (MF_DBGLEVEL >= 1)	Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
 				break;
 			};
-			emlSetMem(dataoutbuf, sectorNo * 4 + 0, 1);
-			
-			if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 1, dataoutbuf)) {
-				if (MF_DBGLEVEL >= 1)	Dbprintf("Read block 1 error");
+			if (isOK) {
+				if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
+					emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
+				} else {	// sector trailer, keep the keys, set only the AC
+					emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
+					memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
+					emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
+				}
+			}
+		}
+
+	}
+
+	if(mifare_classic_halt(pcs, cuid)) {
+		if (MF_DBGLEVEL >= 1)	Dbprintf("Halt error");
+	};
+
+	//  ----------------------------- crypto1 destroy
+	crypto1_destroy(pcs);
+
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+	LEDsoff();
+	
+	if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
+
+}
+
+
+//-----------------------------------------------------------------------------
+// Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
+// 
+//-----------------------------------------------------------------------------
+void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
+  
+  // params
+	uint8_t needWipe = arg0;
+	// bit 0 - need get UID
+	// bit 1 - need wupC
+	// bit 2 - need HALT after sequence
+	// bit 3 - need init FPGA and field before sequence
+	// bit 4 - need reset FPGA and LED
+	uint8_t workFlags = arg1;
+	uint8_t blockNo = arg2;
+	
+	// card commands
+	uint8_t wupC1[]       = { 0x40 }; 
+	uint8_t wupC2[]       = { 0x43 }; 
+	uint8_t wipeC[]       = { 0x41 }; 
+	
+	// variables
+	byte_t isOK = 0;
+	uint8_t uid[10] = {0x00};
+	uint8_t d_block[18] = {0x00};
+	uint32_t cuid;
+	
+	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
+	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
+
+	// reset FPGA and LED
+	if (workFlags & 0x08) {
+		LED_A_ON();
+		LED_B_OFF();
+		LED_C_OFF();
+		iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
+	
+		clear_trace();
+		set_tracing(TRUE);
+	}
+
+	while (true) {
+
+		// get UID from chip
+		if (workFlags & 0x01) {
+			if(!iso14443a_select_card(uid, NULL, &cuid)) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("Can't select card");
 				break;
 			};
-			emlSetMem(dataoutbuf, sectorNo * 4 + 1, 1);
 
-			if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 2, dataoutbuf)) {
-				if (MF_DBGLEVEL >= 1)	Dbprintf("Read block 2 error");
+			if(mifare_classic_halt(NULL, cuid)) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("Halt error");
+				break;
+			};
+		};
+	
+		// reset chip
+		if (needWipe){
+			ReaderTransmitBitsPar(wupC1,7,0, NULL);
+			if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("wupC1 error");
+				break;
+			};
+
+			ReaderTransmit(wipeC, sizeof(wipeC), NULL);
+			if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("wipeC error");
+				break;
+			};
+
+			if(mifare_classic_halt(NULL, cuid)) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("Halt error");
+				break;
+			};
+		};	
+
+		// write block
+		if (workFlags & 0x02) {
+			ReaderTransmitBitsPar(wupC1,7,0, NULL);
+			if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("wupC1 error");
+				break;
+			};
+
+			ReaderTransmit(wupC2, sizeof(wupC2), NULL);
+			if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("wupC2 error");
 				break;
 			};
-			emlSetMem(dataoutbuf, sectorNo * 4 + 2, 1);
 		}
 
-		if(mifare_classic_halt(pcs, cuid)) {
-			if (MF_DBGLEVEL >= 1)	Dbprintf("Halt error");
+		if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
+			if (MF_DBGLEVEL >= 1)	Dbprintf("write block send command error");
 			break;
 		};
+	
+		memcpy(d_block, datain, 16);
+		AppendCrc14443a(d_block, 16);
+	
+		ReaderTransmit(d_block, sizeof(d_block), NULL);
+		if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
+			if (MF_DBGLEVEL >= 1)	Dbprintf("write block send data error");
+			break;
+		};	
+	
+		if (workFlags & 0x04) {
+			if (mifare_classic_halt(NULL, cuid)) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("Halt error");
+				break;
+			};
+		}
 		
+		isOK = 1;
 		break;
-	}	
+	}
+	
+	LED_B_ON();
+	cmd_send(CMD_ACK,isOK,0,0,uid,4);
+	LED_B_OFF();
 
-	//  ----------------------------- crypto1 destroy
-	crypto1_destroy(pcs);
+	if ((workFlags & 0x10) || (!isOK)) {
+		FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+		LEDsoff();
+	}
+}
+
+
+void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
+  
+  // params
+	// bit 1 - need wupC
+	// bit 2 - need HALT after sequence
+	// bit 3 - need init FPGA and field before sequence
+	// bit 4 - need reset FPGA and LED
+	// bit 5 - need to set datain instead of issuing USB reply (called via ARM for StandAloneMode14a)
+	uint8_t workFlags = arg0;
+	uint8_t blockNo = arg2;
 	
-	if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
+	// card commands
+	uint8_t wupC1[]       = { 0x40 }; 
+	uint8_t wupC2[]       = { 0x43 }; 
+	
+	// variables
+	byte_t isOK = 0;
+	uint8_t data[18] = {0x00};
+	uint32_t cuid = 0;
+	
+	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
+	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
+	
+	if (workFlags & 0x08) {
+		LED_A_ON();
+		LED_B_OFF();
+		LED_C_OFF();
+		iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
+
+		clear_trace();
+		set_tracing(TRUE);
+	}
+
+	while (true) {
+		if (workFlags & 0x02) {
+			ReaderTransmitBitsPar(wupC1,7,0, NULL);
+			if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("wupC1 error");
+				break;
+			};
+
+			ReaderTransmit(wupC2, sizeof(wupC2), NULL);
+			if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("wupC2 error");
+				break;
+			};
+		}
+
+		// read block
+		if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
+			if (MF_DBGLEVEL >= 1)	Dbprintf("read block send command error");
+			break;
+		};
+		memcpy(data, receivedAnswer, 18);
+		
+		if (workFlags & 0x04) {
+			if (mifare_classic_halt(NULL, cuid)) {
+				if (MF_DBGLEVEL >= 1)	Dbprintf("Halt error");
+				break;
+			};
+		}
+		
+		isOK = 1;
+		break;
+	}
+	
+	LED_B_ON();
+	if (workFlags & 0x20) {
+		if (isOK)
+			memcpy(datain, data, 18);
+	}
+	else
+		cmd_send(CMD_ACK,isOK,0,0,data,18);
+	LED_B_OFF();
 
-	// add trace trailer
-	memset(uid, 0x44, 4);
-	LogTrace(uid, 4, 0, 0, TRUE);
+	if ((workFlags & 0x10) || (!isOK)) {
+		FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+		LEDsoff();
+	}
+}
+
+void MifareCIdent(){
+  
+	// card commands
+	uint8_t wupC1[]       = { 0x40 }; 
+	uint8_t wupC2[]       = { 0x43 }; 
 	
-	Dbprintf("Loaded.");
+	// variables
+	byte_t isOK = 1;
+	
+	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
+	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
+
+	ReaderTransmitBitsPar(wupC1,7,0, NULL);
+	if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
+		isOK = 0;
+	};
+
+	ReaderTransmit(wupC2, sizeof(wupC2), NULL);
+	if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
+		isOK = 0;
+	};
+
+	if (mifare_classic_halt(NULL, 0)) {
+		isOK = 0;
+	};
+
+	cmd_send(CMD_ACK,isOK,0,0,0,0);
 }
 
-//-----------------------------------------------------------------------------
-// MIFARE 1k emulator
-// 
-//-----------------------------------------------------------------------------
+//
+// DESFIRE
+//
+
+void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
+
+	byte_t dataout[11] = {0x00};
+	uint8_t uid[10] = {0x00};
+	uint32_t cuid;
+    
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
+	clear_trace();
+
+	int len = iso14443a_select_card(uid, NULL, &cuid);
+	if(!len) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
+		OnError(1);
+		return;
+	};
+
+	if(mifare_desfire_des_auth1(cuid, dataout)){
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
+		OnError(4);
+		return;
+	}
+
+	if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
+    cmd_send(CMD_ACK,1,cuid,0,dataout, sizeof(dataout));
+}
+
+void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
+
+	uint32_t cuid = arg0;
+	uint8_t key[16] = {0x00};
+	byte_t isOK = 0;
+	byte_t dataout[12] = {0x00};
+    
+	memcpy(key, datain, 16);
+	
+	isOK = mifare_desfire_des_auth2(cuid, key, dataout);
+	
+	if( isOK) {
+		if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");  
+		OnError(4);
+		return;
+	}
+
+	if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
 
+	cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+	LEDsoff();
+}
+
+void OnSuccess(){
+	pcb_blocknum = 0;
+	ReaderTransmit(deselect_cmd, 3 , NULL);
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+	LEDsoff();
+}
+
+void OnError(uint8_t reason){
+	pcb_blocknum = 0;
+	ReaderTransmit(deselect_cmd, 3 , NULL);
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+	cmd_send(CMD_ACK,0,reason,0,0,0);
+	LEDsoff();
+}