X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/1604d0a2909a6ae1a5b615d280671d867c1028a4..70ee301e0d21f73949173483f7e6728deb9c8b32:/armsrc/mifarecmd.c

diff --git a/armsrc/mifarecmd.c b/armsrc/mifarecmd.c
index 6a491b53..6bb04caf 100644
--- a/armsrc/mifarecmd.c
+++ b/armsrc/mifarecmd.c
@@ -2,6 +2,9 @@
 // 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 +15,13 @@
 
 #include "mifarecmd.h"
 #include "apps.h"
+#include "util.h"
+//#include "../client/loclass/des.h"
+#include "des.h"
+#include "crc.h"
 
 //-----------------------------------------------------------------------------
-// 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)
@@ -35,9 +42,7 @@ void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 	pcs = &mpcs;
 
 	// clear trace
-	iso14a_clear_trace();
-//	iso14a_set_tracing(false);
-
+	clear_trace();
 	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 
 	LED_A_ON();
@@ -46,22 +51,22 @@ 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;
 		};
 		
@@ -74,83 +79,195 @@ 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();
-  cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
-//	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 MifareUReadBlock(uint8_t arg0,uint8_t *datain)
-{
-    // params
-	uint8_t blockNo = arg0;
-	
-	// variables
-	byte_t isOK = 0;
-	byte_t dataoutbuf[16];
-	uint8_t uid[10];
-	uint32_t cuid;
+
+void MifareUC_Auth1(uint8_t arg0, uint8_t *datain){
+
+	byte_t dataoutbuf[16] = {0x00};
+	uint8_t uid[10] = {0x00};
+	uint32_t cuid = 0x00;
+
+	LED_A_ON(); LED_B_OFF(); LED_C_OFF();
     
-	// clear trace
-	iso14a_clear_trace();
+	clear_trace();
 	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
+
+	if(!iso14443a_select_card(uid, NULL, &cuid)) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
+		OnError(0);
+		return;
+	};
+	
+	if(mifare_ultra_auth1(dataoutbuf)){
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
+		OnError(1);
+		return;
+	}
+
+	if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
     
-	LED_A_ON();
-	LED_B_OFF();
-	LED_C_OFF();
+    cmd_send(CMD_ACK,1,cuid,0,dataoutbuf,11);
+	LEDsoff();
+}
+void MifareUC_Auth2(uint32_t arg0, uint8_t *datain){
+
+	uint8_t key[16] = {0x00};
+	byte_t dataoutbuf[16] = {0x00};
     
-	while (true) {
-		if(!iso14443a_select_card(uid, NULL, &cuid)) {
-            if (MF_DBGLEVEL >= 1)	Dbprintf("Can't select card");
-			break;
-		};
-        
-		if(mifare_ultra_readblock(cuid, blockNo, dataoutbuf)) {
-            if (MF_DBGLEVEL >= 1)	Dbprintf("Read block error");
-			break;
-		};
-        
-		if(mifare_ultra_halt(cuid)) {
-            if (MF_DBGLEVEL >= 1)	Dbprintf("Halt error");
-			break;
-		};
-		
-		isOK = 1;
-		break;
+	memcpy(key, datain, 16);
+    
+	LED_A_ON();	LED_B_OFF(); LED_C_OFF();
+	
+	if(mifare_ultra_auth2(key, dataoutbuf)){
+	    if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part2: Fail...");
+		OnError(1);
+		return;			
 	}
 	
-	if (MF_DBGLEVEL >= 2)	DbpString("READ BLOCK FINISHED");
-    
-	// add trace trailer
-	memset(uid, 0x44, 4);
-	LogTrace(uid, 4, 0, 0, TRUE);
-	LED_B_ON();
-        cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
-	LED_B_OFF();
-    
+	if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
     
-    // Thats it...
+	cmd_send(CMD_ACK,1,0,0,dataoutbuf,11);
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 	LEDsoff();
 }
 
+// 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};
+	uint8_t uid[10] = {0x00};
+    bool usePwd = (arg1 == 1);
+
+	LEDsoff();	
+	LED_A_ON();    
+	clear_trace();
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
+    
+	int len = iso14443a_select_card(uid, NULL, NULL);
+	if(!len) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);
+		OnError(1);
+		return;
+	}
+       
+	 // authenticate here.
+	if ( usePwd ) {
+
+		uint8_t key[16] = {0x00};	
+		memcpy(key, datain, 16);
+		 
+		uint8_t random_a[8] = {1,1,1,1,1,1,1,1 };
+		uint8_t random_b[8] = {0x00};
+		uint8_t enc_random_b[8] = {0x00};
+		uint8_t rnd_ab[16] = {0x00};
+		uint8_t IV[8] = {0x00};
+		
+		uint16_t len;
+		uint8_t receivedAnswer[MAX_FRAME_SIZE];
+		uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
+	
+		len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, receivedAnswer,receivedAnswerPar ,NULL);
+		if (len != 11) {
+			if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
+			OnError(1);
+			return;
+		}
+	
+		// tag nonce.
+		memcpy(enc_random_b,receivedAnswer+1,8);
+
+		// decrypt nonce.
+		tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );
+		rol(random_b,8);
+		memcpy(rnd_ab  ,random_a,8);
+		memcpy(rnd_ab+8,random_b,8);
+
+		if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
+			Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",
+				enc_random_b[0],enc_random_b[1],enc_random_b[2],enc_random_b[3],
+				enc_random_b[4],enc_random_b[5],enc_random_b[6],enc_random_b[7]);
+				
+			Dbprintf("    B: %02x %02x %02x %02x %02x %02x %02x %02x",
+				random_b[0],random_b[1],random_b[2],random_b[3],
+				random_b[4],random_b[5],random_b[6],random_b[7]);
+
+			Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
+					rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],
+					rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
+					
+			Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
+					rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],
+					rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );
+		}
+		
+		// encrypt    out, in, length, key, iv
+		tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
+
+		
+		len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, receivedAnswer, receivedAnswerPar, NULL);
+		if (len != 11) {
+			if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
+			OnError(1);
+			return;
+		}
+
+		uint8_t enc_resp[8] = { 0 };
+		uint8_t resp_random_a[8] = { 0 };
+		memcpy(enc_resp, receivedAnswer+1, 8);
+	
+		// decrypt    out, in, length, key, iv 
+		tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
+		if ( memcmp(resp_random_a, random_a, 8) != 0 )
+			Dbprintf("failed authentication");
+
+		if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
+			Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x", 
+					rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],
+					rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
+
+			Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
+					rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],
+					rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);
+
+			Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",
+					random_a[0],random_a[1],random_a[2],random_a[3],
+					random_a[4],random_a[5],random_a[6],random_a[7]);
+					
+			Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",
+					resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],
+					resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);
+		}
+	}
+		
+	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)
 {
@@ -162,7 +279,7 @@ void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 	
 	// variables
 	byte_t isOK = 0;
-	byte_t dataoutbuf[16 * 4];
+	byte_t dataoutbuf[16 * 16];
 	uint8_t uid[10];
 	uint32_t cuid;
 	struct Crypto1State mpcs = {0, 0};
@@ -170,8 +287,7 @@ void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 	pcs = &mpcs;
 
 	// clear trace
-	iso14a_clear_trace();
-//	iso14a_set_tracing(false);
+	clear_trace();
 
 	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 
@@ -179,134 +295,150 @@ void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 	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();
-  cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,32);
-//	UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
-//	SpinDelay(100);
-	
-//	memcpy(ack.d.asBytes, dataoutbuf + 16 * 2, 16 * 2);
-//	UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
-  cmd_send(CMD_ACK,isOK,0,0,dataoutbuf+32, 32);
+	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);
-
 }
 
-void MifareUReadCard(uint8_t arg0, uint8_t *datain)
+// 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)
 {
-  // params
-        uint8_t sectorNo = arg0;
-        
-        // variables
-        byte_t isOK = 0;
-        byte_t dataoutbuf[16 * 4];
-        uint8_t uid[10];
-        uint32_t cuid;
+	// params
+	uint8_t blockNo = arg0;
+	uint16_t blocks = arg1;
+	bool useKey = (arg2 == 1);
+	int countpages = 0;
+	uint8_t dataout[176] = {0x00};;
 
-        // clear trace
-        iso14a_clear_trace();
-//      iso14a_set_tracing(false);
+	LEDsoff();
+	LED_A_ON(); 
+	clear_trace();
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 
-		iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
+	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;
+	}
+	
+	// authenticate
+	if ( useKey ) {
+		
+		uint8_t key[16] = {0x00};	
+		memcpy(key, datain, 16);
+		 
+		uint8_t random_a[8] = {1,1,1,1,1,1,1,1 };
+		uint8_t random_b[8] = {0x00};
+		uint8_t enc_random_b[8] = {0x00};
+		uint8_t rnd_ab[16] = {0x00};
+		uint8_t IV[8] = {0x00};
+		
+		uint16_t len;
+		uint8_t receivedAnswer[MAX_FRAME_SIZE];
+		uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
+	
+		len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, receivedAnswer,receivedAnswerPar ,NULL);
+		if (len != 11) {
+			if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
+			OnError(1);
+			return;
+		}
+	
+		// tag nonce.
+		memcpy(enc_random_b,receivedAnswer+1,8);
+
+		// decrypt nonce.
+		tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );
+		rol(random_b,8);
+		memcpy(rnd_ab  ,random_a,8);
+		memcpy(rnd_ab+8,random_b,8);
+	
+		// encrypt    out, in, length, key, iv
+		tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
 
-        LED_A_ON();
-        LED_B_OFF();
-        LED_C_OFF();
-
-        while (true) {
-                if(!iso14443a_select_card(uid, NULL, &cuid)) {
-                if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
-                        break;
-                };
-		for(int sec=0;sec<16;sec++){
-                    if(mifare_ultra_readblock(cuid, sectorNo * 4 + sec, dataoutbuf + 4 * sec)) {
-                    if (MF_DBGLEVEL >= 1)   Dbprintf("Read block %d error",sec);
-                        break;
-                    };
-                }
-                if(mifare_ultra_halt(cuid)) {
-                if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
-                        break;
-                };
-
-                isOK = 1;
-                break;
-        }
-        
-        if (MF_DBGLEVEL >= 2) DbpString("READ CARD FINISHED");
+		len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, receivedAnswer, receivedAnswerPar, NULL);
+		if (len != 11) {
+			OnError(1);
+			return;
+		}
 
-        // add trace trailer
-        memset(uid, 0x44, 4);
-        LogTrace(uid, 4, 0, 0, TRUE);
-        
-        LED_B_ON();
-		cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,64);
-  //cmd_send(CMD_ACK,isOK,0,0,dataoutbuf+32, 32);
-        LED_B_OFF();
+		uint8_t enc_resp[8] = { 0 };
+		uint8_t resp_random_a[8] = { 0 };
+		memcpy(enc_resp, receivedAnswer+1, 8);
+	
+		// decrypt    out, in, length, key, iv 
+		tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
+		if ( memcmp(resp_random_a, random_a, 8) != 0 )
+			Dbprintf("failed authentication");
+	}
+	
+	for (int i = 0; i < blocks; i++){
+	
+		len = mifare_ultra_readblock(blockNo * 4 + i, dataout + 4 * i);
+		
+		if (len) {
+			if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
+			OnError(2);
+			return;
+		} else {
+			countpages++;
+		}
+	}
+		
+	if (mifare_ultra_halt()) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
+		OnError(3);
+		return;
+	}
+	
+	if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("blocks read %d", countpages);
 
-        // Thats it...
-        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-        LEDsoff();
-//  iso14a_set_tracing(TRUE);
+	len = blocks*4;
 
+	cmd_send(CMD_ACK, 1, len, 0, dataout, len);	
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+	LEDsoff();
 }
 
-
 //-----------------------------------------------------------------------------
-// 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)
@@ -329,8 +461,7 @@ void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 	pcs = &mpcs;
 
 	// clear trace
-	iso14a_clear_trace();
-//  iso14a_set_tracing(false);
+	clear_trace();
 
 	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 
@@ -368,159 +499,168 @@ 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();
 	cmd_send(CMD_ACK,isOK,0,0,0,0);
-//	UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
 	LED_B_OFF();
 
 
 	// Thats it...
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 	LEDsoff();
-//  iso14a_set_tracing(TRUE);
-
 }
 
 void MifareUWriteBlock(uint8_t arg0, uint8_t *datain)
 {
-        // params
-        uint8_t blockNo = arg0;
-        byte_t blockdata[16];
+    uint8_t blockNo = arg0;
+	byte_t blockdata[16] = {0x00};
 
-        memset(blockdata,'\0',16);
-        memcpy(blockdata, datain,16);
+    memcpy(blockdata, datain, 16);
         
-        // variables
-        byte_t isOK = 0;
-        uint8_t uid[10];
-        uint32_t cuid;
-
-        // clear trace
-        iso14a_clear_trace();
-	//  iso14a_set_tracing(false);
-
-		iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
-
-        LED_A_ON();
-        LED_B_OFF();
-        LED_C_OFF();
-
-        while (true) {
-                if(!iso14443a_select_card(uid, NULL, &cuid)) {
-                        if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
-                        break;
-                };
-
-                if(mifare_ultra_writeblock(cuid, blockNo, blockdata)) {
-                        if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
-                        break;
-                };
-
-                if(mifare_ultra_halt(cuid)) {
-                        if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
-                        break;
-                };
-                
-                isOK = 1;
-                break;
-        }
-        
-        if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
-
-        // add trace trailer
-        memset(uid, 0x44, 4);
-        LogTrace(uid, 4, 0, 0, TRUE);
-
-        LED_B_ON();
-  	cmd_send(CMD_ACK,isOK,0,0,0,0);
-//      UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
-        LED_B_OFF();
+	uint8_t uid[10] = {0x00};
 
+	LED_A_ON(); LED_B_OFF(); LED_C_OFF();
+		
+	clear_trace();
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 
-        // Thats it...
-        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-        LEDsoff();
-//  iso14a_set_tracing(TRUE);
+	if(!iso14443a_select_card(uid, NULL, NULL)) {
+		if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
+		OnError(0);
+		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 MifareUWriteBlock_Special(uint8_t arg0, uint8_t *datain)
 {
-        // params
-        uint8_t blockNo = arg0;
-        byte_t blockdata[4];
-        
+	uint8_t blockNo = arg0;
+	byte_t blockdata[4] = {0x00};
+	uint8_t uid[10] = {0x00};
+	
 	memcpy(blockdata, datain,4);
+	
+	LEDsoff();
+	LED_A_ON();
+	clear_trace();
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 
-        // variables
-        byte_t isOK = 0;
-        uint8_t uid[10];
-        uint32_t cuid;
-
-        // clear trace
-        iso14a_clear_trace();
-        //  iso14a_set_tracing(false);
-
-		iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
-
-        LED_A_ON();
-        LED_B_OFF();
-        LED_C_OFF();
-
-        while (true) {
-                        if(!iso14443a_select_card(uid, NULL, &cuid)) {
-                        if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
-                        break;
-                };
-
-                if(mifare_ultra_special_writeblock(cuid, blockNo, blockdata)) {
-                        if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
-                        break;
-                };
-
-                if(mifare_ultra_halt(cuid)) {
-                        if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
-                        break;
-                };
-
-                isOK = 1;
-                break;
-        }
+	if(!iso14443a_select_card(uid, NULL, NULL)) {
+		if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
+		OnError(0);
+		return;
+	};
 
-        if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
+	if(mifare_ultra_special_writeblock(blockNo, blockdata)) {
+		if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
+		OnError(0);
+		return;
+	};
 
-        // add trace trailer
-	memset(uid, 0x44, 4);
-        LogTrace(uid, 4, 0, 0, TRUE);
+	if(mifare_ultra_halt()) {
+		if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
+		OnError(0);
+		return;
+	};
 
-       LED_B_ON();
-        cmd_send(CMD_ACK,isOK,0,0,0,0);
-//      UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
-        LED_B_OFF();
+	if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
 
+	cmd_send(CMD_ACK,1,0,0,0,0);
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+	LEDsoff();
+}
 
-        // Thats it...
-        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-        LEDsoff();
-//  iso14a_set_tracing(TRUE);
+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();
+	clear_trace();
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 
+	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_special_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_special_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_special_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_special_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) {
+int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_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;
 }
 
 
-
 //-----------------------------------------------------------------------------
 // MIFARE nested authentication. 
 // 
@@ -541,7 +681,8 @@ void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *dat
 	uint16_t davg;
 	static uint16_t dmin, dmax;
 	uint8_t uid[10];
-	uint32_t cuid, nt1, nt2, nttmp, nttest, par, ks1;
+	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];
@@ -549,14 +690,16 @@ void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *dat
 	struct Crypto1State mpcs = {0, 0};
 	struct Crypto1State *pcs;
 	pcs = &mpcs;
-	uint8_t* receivedAnswer = mifare_get_bigbufptr();
+	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 
 	uint32_t auth1_time, auth2_time;
 	static uint16_t delta_time;
 
+	// free eventually allocated BigBuf memory
+	BigBuf_free();
 	// clear trace
-	iso14a_clear_trace();
-	iso14a_set_tracing(false);
+	clear_trace();
+	set_tracing(false);
 	
 	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 
@@ -567,6 +710,7 @@ void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *dat
 	// statistics on nonce distance
 	if (calibrate) {	// for first call only. Otherwise reuse previous calibration
 		LED_B_ON();
+		WDT_HIT();
 
 		davg = dmax = 0;
 		dmin = 2000;
@@ -665,19 +809,18 @@ void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *dat
 
 			// nested authentication
 			auth2_time = auth1_time + delta_time;
-			len = mifare_sendcmd_shortex(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, &par, &auth2_time);
+			len = mifare_sendcmd_shortex(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;
 			};
 		
 			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);
+			if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
 			
 			// Parity validity check
 			for (j = 0; j < 4; j++) {
-				par_array[j] = (oddparity(receivedAnswer[j]) != ((par & 0x08) >> 3));
-				par = par << 1;
+				par_array[j] = (oddparity(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
 			}
 			
 			ncount = 0;
@@ -712,10 +855,6 @@ void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *dat
 	//  ----------------------------- crypto1 destroy
 	crypto1_destroy(pcs);
 	
-	// add trace trailer
-	memset(uid, 0x44, 4);
-	LogTrace(uid, 4, 0, 0, TRUE);
-
 	byte_t buf[4 + 4 * 4];
 	memcpy(buf, &cuid, 4);
 	memcpy(buf+4, &target_nt[0], 4);
@@ -731,7 +870,7 @@ void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *dat
 
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 	LEDsoff();
-	iso14a_set_tracing(TRUE);
+	set_tracing(TRUE);
 }
 
 //-----------------------------------------------------------------------------
@@ -760,8 +899,8 @@ void MifareChkKeys(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 	MF_DBGLEVEL = MF_DBG_NONE;
 	
 	// clear trace
-	iso14a_clear_trace();
-	iso14a_set_tracing(TRUE);
+	clear_trace();
+	set_tracing(TRUE);
 
 	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 
@@ -769,18 +908,11 @@ void MifareChkKeys(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 	LED_B_OFF();
 	LED_C_OFF();
 
-//	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);
-		// prepare next select by sending a HALT. There is no need to power down the card.
 		if(mifare_classic_halt(pcs, cuid)) {
 			if (MF_DBGLEVEL >= 1)	Dbprintf("ChkKeys: Halt error");
 		}
 
-		// SpinDelay(50);
-		
 		if(!iso14443a_select_card(uid, NULL, &cuid)) {
 			if (OLD_MF_DBGLEVEL >= 1)	Dbprintf("ChkKeys: Can't select card");
 			break;
@@ -798,15 +930,10 @@ 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);
-
 	LED_B_ON();
     cmd_send(CMD_ACK,isOK,0,0,datain + i * 6,6);
 	LED_B_OFF();
 
-  // Thats it...
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 	LEDsoff();
 
@@ -836,14 +963,11 @@ void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain)
 }
 
 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
-//	UsbCommand ack = {CMD_ACK, {arg0, arg1, 0}};
-
-  byte_t buf[48];
-	emlGetMem(buf, arg0, arg1); // data, block num, blocks count
+	byte_t buf[USB_CMD_DATA_SIZE];
+	emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
 
 	LED_B_ON();
-  cmd_send(CMD_ACK,arg0,arg1,0,buf,48);
-//	UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
+	cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
 	LED_B_OFF();
 }
 
@@ -852,8 +976,7 @@ 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;
@@ -867,8 +990,8 @@ void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datai
 	uint8_t uid[10];
 
 	// clear trace
-	iso14a_clear_trace();
-	iso14a_set_tracing(false);
+	clear_trace();
+	set_tracing(false);
 	
 	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 
@@ -876,63 +999,51 @@ void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datai
 	LED_B_OFF();
 	LED_C_OFF();
 	
-	while (true) {
-		if(!iso14443a_select_card(uid, NULL, &cuid)) {
-			if (MF_DBGLEVEL >= 1)	Dbprintf("Can't select card");
-			break;
-		};
-		
-		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;
-				}
-			}
+	bool isOK = true;
+
+	if(!iso14443a_select_card(uid, NULL, &cuid)) {
+		isOK = false;
+		if (MF_DBGLEVEL >= 1)	Dbprintf("Can't select card");
+	}
 		
-			if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 0, dataoutbuf)) {
-				if (MF_DBGLEVEL >= 1)	Dbprintf("Read block 0 error");
-				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");
+	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;
-			};
-			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");
+			}
+		} 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;
-			};
-			emlSetMem(dataoutbuf, sectorNo * 4 + 2, 1);
-
-			// get block 3 bytes 6-9
-			if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 3, dataoutbuf)) {
-				if (MF_DBGLEVEL >= 1)	Dbprintf("Read block 3 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;
 			};
-			emlGetMem(dataoutbuf2, sectorNo * 4 + 3, 1);
-			memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
-			emlSetMem(dataoutbuf2,  sectorNo * 4 + 3, 1);
+			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");
-			break;
-		};
-		
-		break;
-	}	
+	}
+
+	if(mifare_classic_halt(pcs, cuid)) {
+		if (MF_DBGLEVEL >= 1)	Dbprintf("Halt error");
+	};
 
 	//  ----------------------------- crypto1 destroy
 	crypto1_destroy(pcs);
@@ -942,16 +1053,8 @@ void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datai
 	
 	if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
 
-	// add trace trailer
-	memset(uid, 0x44, 4);
-	LogTrace(uid, 4, 0, 0, TRUE);
 }
 
-//-----------------------------------------------------------------------------
-// MIFARE 1k emulator
-// 
-//-----------------------------------------------------------------------------
-
 
 //-----------------------------------------------------------------------------
 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
@@ -976,54 +1079,49 @@ void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datai
 	
 	// variables
 	byte_t isOK = 0;
-	uint8_t uid[10];
-	uint8_t d_block[18];
+	uint8_t uid[10] = {0x00};
+	uint8_t d_block[18] = {0x00};
 	uint32_t cuid;
 	
-	memset(uid, 0x00, 10);
-	uint8_t* receivedAnswer = mifare_get_bigbufptr();
-	
-	if (workFlags & 0x08) {
-		// clear trace
-		iso14a_clear_trace();
-		iso14a_set_tracing(TRUE);
-
-		iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
+	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();
 	
-		SpinDelay(300);
-		FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-		SpinDelay(100);
-		FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
+		clear_trace();
+		set_tracing(TRUE);
+		iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 	}
 
 	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;
+				//break;
 			};
 
 			if(mifare_classic_halt(NULL, cuid)) {
 				if (MF_DBGLEVEL >= 1)	Dbprintf("Halt error");
-				break;
+				//break;
 			};
 		};
 	
 		// reset chip
 		if (needWipe){
-      ReaderTransmitBitsPar(wupC1,7,0, NULL);
-			if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
+			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) || (receivedAnswer[0] != 0x0a)) {
+			if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
 				if (MF_DBGLEVEL >= 1)	Dbprintf("wipeC error");
 				break;
 			};
@@ -1036,20 +1134,20 @@ void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datai
 
 		// write block
 		if (workFlags & 0x02) {
-      ReaderTransmitBitsPar(wupC1,7,0, NULL);
-			if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
+			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) || (receivedAnswer[0] != 0x0a)) {
+			if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
 				if (MF_DBGLEVEL >= 1)	Dbprintf("wupC2 error");
 				break;
 			};
 		}
 
-		if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
+		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;
 		};
@@ -1058,7 +1156,7 @@ void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datai
 		AppendCrc14443a(d_block, 16);
 	
 		ReaderTransmit(d_block, sizeof(d_block), NULL);
-		if ((ReaderReceive(receivedAnswer) != 1) || (receivedAnswer[0] != 0x0a)) {
+		if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
 			if (MF_DBGLEVEL >= 1)	Dbprintf("write block send data error");
 			break;
 		};	
@@ -1074,31 +1172,17 @@ void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datai
 		break;
 	}
 	
-//	UsbCommand ack = {CMD_ACK, {isOK, 0, 0}};
-//	if (isOK) memcpy(ack.d.asBytes, uid, 4);
-	
-	// add trace trailer
-	/**
-	*	Removed by Martin, the uid is overwritten with 0x44, 
-	*	which can 't be intended. 
-	*
-	*	memset(uid, 0x44, 4);
-	*	LogTrace(uid, 4, 0, 0, TRUE);
-	**/
-	
-
 	LED_B_ON();
-  cmd_send(CMD_ACK,isOK,0,0,uid,4);
-//	UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
+	cmd_send(CMD_ACK,isOK,0,0,uid,4);
 	LED_B_OFF();
 
 	if ((workFlags & 0x10) || (!isOK)) {
-		// Thats it...
 		FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 		LEDsoff();
 	}
 }
 
+
 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
   
   // params
@@ -1115,46 +1199,39 @@ void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datai
 	
 	// variables
 	byte_t isOK = 0;
-	uint8_t data[18];
+	uint8_t data[18] = {0x00};
 	uint32_t cuid = 0;
 	
-	memset(data, 0x00, 18);
-	uint8_t* receivedAnswer = mifare_get_bigbufptr();
+	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
+	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 	
 	if (workFlags & 0x08) {
-		// clear trace
-		iso14a_clear_trace();
-		iso14a_set_tracing(TRUE);
-
-		iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
-
 		LED_A_ON();
 		LED_B_OFF();
 		LED_C_OFF();
 	
-		SpinDelay(300);
-		FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-		SpinDelay(100);
-		FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
+		clear_trace();
+		set_tracing(TRUE);
+		iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 	}
 
 	while (true) {
 		if (workFlags & 0x02) {
 			ReaderTransmitBitsPar(wupC1,7,0, NULL);
-			if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
+			if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
 				if (MF_DBGLEVEL >= 1)	Dbprintf("wupC1 error");
 				break;
 			};
 
 			ReaderTransmit(wupC2, sizeof(wupC2), NULL);
-			if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
+			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, NULL) != 18)) {
+		if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
 			if (MF_DBGLEVEL >= 1)	Dbprintf("read block send command error");
 			break;
 		};
@@ -1171,26 +1248,162 @@ void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datai
 		break;
 	}
 	
-//	UsbCommand ack = {CMD_ACK, {isOK, 0, 0}};
-//	if (isOK) memcpy(ack.d.asBytes, data, 18);
-	
-	// add trace trailer
-	/*
-	* Removed by Martin, this piece of overwrites the 'data' variable 
-	* which is sent two lines down, and is obviously not correct. 
-	* 
-	* memset(data, 0x44, 4);
-	* LogTrace(data, 4, 0, 0, TRUE);
-	*/
 	LED_B_ON();
-  cmd_send(CMD_ACK,isOK,0,0,data,18);
-//	UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
+	cmd_send(CMD_ACK,isOK,0,0,data,18);
 	LED_B_OFF();
 
 	if ((workFlags & 0x10) || (!isOK)) {
-		// Thats it...
 		FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 		LEDsoff();
 	}
 }
 
+void MifareCIdent(){
+  
+	// card commands
+	uint8_t wupC1[]       = { 0x40 }; 
+	uint8_t wupC2[]       = { 0x43 }; 
+	
+	// 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);
+}
+
+void MifareCollectNonces(uint32_t arg0, uint32_t arg1){
+
+	BigBuf_free();
+
+	uint32_t iterations = arg0;
+	uint8_t uid[10] = {0x00};
+
+	uint8_t *response = BigBuf_malloc(MAX_MIFARE_FRAME_SIZE);
+	uint8_t *responsePar = BigBuf_malloc(MAX_MIFARE_PARITY_SIZE);
+
+	uint8_t mf_auth[] = { 0x60,0x00,0xf5,0x7b };
+	
+	// get memory from BigBuf.
+	uint8_t *nonces = BigBuf_malloc(iterations * 4);
+
+	LED_A_ON();
+	LED_B_OFF();
+	LED_C_OFF();
+
+	clear_trace();
+	set_tracing(TRUE);
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
+	
+	for (int i = 0; i < iterations; i++) {
+						
+		WDT_HIT();
+
+		// Test if the action was cancelled
+		if(BUTTON_PRESS()) break;
+		
+		//		if(mifare_classic_halt(pcs, cuid)) {
+		//			if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
+		//}
+
+		if(!iso14443a_select_card(uid, NULL, NULL)) {
+			if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
+			continue;
+		};
+
+		// Transmit MIFARE_CLASSIC_AUTH.
+		ReaderTransmit(mf_auth, sizeof(mf_auth), NULL);
+
+		// Receive the (4 Byte) "random" nonce
+		if (!ReaderReceive(response, responsePar)) {
+			if (MF_DBGLEVEL >= 1)	Dbprintf("Couldn't receive tag nonce");
+			continue;
+		}	
+		
+		nonces[i*4] = bytes_to_num(response, 4);
+	}
+		
+	int packLen =  iterations * 4;
+	int packSize = 0;
+	int packNum = 0;
+	while (packLen > 0) {
+		packSize = MIN(USB_CMD_DATA_SIZE, packLen);
+		LED_B_ON();
+		cmd_send(CMD_ACK, 77, 0, packSize, nonces - packLen, packSize);
+		LED_B_OFF();
+
+		packLen -= packSize;
+		packNum++;
+	}
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+	LEDsoff();
+}
+
+//
+// DESFIRE
+//
+
+void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
+
+	byte_t dataout[11] = {0x00};
+	uint8_t uid[10] = {0x00};
+	uint32_t cuid = 0x00;
+    
+	clear_trace();
+	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
+
+	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 dataout[12] = {0x00};
+	byte_t isOK = 0;
+    
+	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();
+}