diff --git a/CHANGELOG.md b/CHANGELOG.md
index f9e8e2ac..e619d89e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,8 +3,18 @@ All notable changes to this project will be documented in this file.
 This project uses the changelog in accordance with [keepchangelog](http://keepachangelog.com/). Please use this to write notable changes, which is not the same as git commit log...
 
 ## [unreleased][unreleased]
+  --trying to fix "hf 14b" command to be able to read CALYPSO card.	 (iceman)
+  --trying to fix "t55x7" read with password bug. (iceman)
+  --
 
 ### Added
+- `hf mf eload u` added an ultralight/ntag option. (marshmellow)
+- `hf iclass managekeys` to save, load and manage iclass keys.  (adjusted most commands to accept a loaded key in memory) (marshmellow)
+- `hf iclass readblk` to select, authenticate, and read 1 block from an iclass card (marshmellow)
+- `hf iclass writeblk` to select, authenticate, and write 1 block to an iclass card (or picopass) (marshmellow + others)
+- `hf iclass clone` to take a saved dump file and clone selected blocks to a new tag (marshmellow + others)
+- `hf iclass calcnewkey` - to calculate the div_key change to change a key - (experimental) (marshmellow + others)
+- `hf iclass encryptblk` - to encrypt a data block hex to prep for writing that block (marshmellow)
 - ISO14443a stand-alone operation with ARM CFLAG="WITH_ISO14443a_StandAlone". This code can read & emulate two banks of 14a tag UIDs and write to "magic" cards  (Craig Young) 
 - AWID26 command context added as 'lf awid' containing realtime demodulation as well as cloning/simulation based on tag numbers (Craig Young)
 - Added 'hw status'. This command makes the ARM print out some runtime information. (holiman) 
@@ -12,8 +22,9 @@ This project uses the changelog in accordance with [keepchangelog](http://keepac
 - Added `data hex2bin` and `data bin2hex` for command line conversion between binary and hexadecimal (holiman)
 
 ### Changed																		
+- changed `lf config t <threshold>` to be 0 - 128 and will trigger on + or - threshold value (marshmellow) 
+- `hf iclass dump` cli options - can now dump AA1 and AA2 with different keys in one run (does not go to muliple pages for the larger tags yet)
 - Revised workflow for StandAloneMode14a (Craig Young)
-- Changed lf config's `threshold` to a graph (signed) metric and it will trigger on + or - value set to. (example: set to 50 and recording would begin at first graphed value of >= 50 or <= -50) (marshmellow)
 - EPA functions (`hf epa`) now support both ISO 14443-A and 14443-B cards (frederikmoellers)
 - 'hw version' only talks to ARM at startup, after that the info is cached. (pwpiwi)
 
@@ -26,7 +37,6 @@ This project uses the changelog in accordance with [keepchangelog](http://keepac
 - Added compression of fpga config and data, *BOOTROM REFLASH REQUIRED* (piwi)
 - Implemented better detection of mifare-tags that are not vulnerable to classic attacks (`hf mf mifare`, `hf mf nested`) (piwi)
 
-
 ### Added
 - Add `hf 14b reader` to find and print general info about known 14b tags (marshmellow)
 - Add `hf 14b info` to find and print full info about std 14b tags and sri tags (using 14b raw commands in the client)  (marshmellow)
diff --git a/README.txt b/README.txt
index 2acd55a1..2bab1bcd 100644
--- a/README.txt
+++ b/README.txt
@@ -1,24 +1,32 @@
-The iceman fork.
-
+The iceman fork
+---------------
 NOTICE:
 
 The official Proxmark repository is found here: https://github.com/Proxmark/proxmark3
 
+NEWS: 
+
+::THIS FORK IS HIGHLY EXPERIMENTAL::
 
-NEWS:      
 
 Whats in this fork?  I have scraped the web for different enhancements to the PM3 source code and not all of them ever found their way to the master branch. 
 Among the stuff is
 
 	* Jonor's hf 14a raw timing patch
 	* Piwi's updates. (usually gets into the master)
+	* Piwi's "topaz" branch (not merged)
 	* Holiman's iclass, (usually gets into the master)
-	* Marshmellow's LF fixes
+	* Marshmellow's fixes (usually gets into the master)
 	* Midnitesnake's Ultralight,  Ultralight-c enhancements
 	* Izsh's lf peak modification / iir-filtering
 	* Aspers's tips and tricks from inside the PM3-gui-tool, settings.xml and other stuff.
 	* My own desfire, Ultralight extras, LF T55xx enhancements, bugs fixes (filelength, hf mf commands ), TNP3xxx lua scripts,  Awid26,  skidata scripts (will come)
 	* other obscure patches like for the sammy-mode,  (offline you know), tagidentifications, defaultkeys. 
+	* Minor textual changes here and there.
+	* Simulation of Ultralight/Ntag.
+	* Marshmellow's and my "RevEng" addon for the client.  Ref: http://reveng.sourceforge.net/
+	* Someone's alterantive bruteforce Mifare changes.. (you need the two other exe to make it work)
+	* 
 	
 Give me a hint, and I'll see if I can't merge in the stuff you have. 
 
@@ -28,6 +36,7 @@ PM3 GUI:
 
 I do tend to rename and move stuff around, the official PM3-GUI from Gaucho will not work so well. *sorry*	
 
+
 	  
 DEVELOPMENT:
 
@@ -78,10 +87,54 @@ Solution
 	
 
 An old Qt4 version makefile is found here: http://www.icesql.se/proxmark3/code/linuxmakefile.txt  but this one doesn't have all new files in it. So I don't recommend it.
+							   
+
+January 2015, Sweden
+iceman at host iuse.se
+
 
 The Proxmark 3 is available for purchase (assembled and tested) from the
 following locations:
 
+   * http://proxmark3.com/
+   * http://www.xfpga.com/
 
-January 2015, Sweden
-iceman at host iuse.se
+Most of the ultra-low-volume contract assemblers could put
+something like this together with a reasonable yield. A run of around
+a dozen units is probably cost-effective. The BOM includes (possibly-
+outdated) component pricing, and everything is available from Digikey
+and the usual distributors.
+
+If you've never assembled a modern circuit board by hand, then this is
+not a good place to start. Some of the components (e.g. the crystals)
+must not be assembled with a soldering iron, and require hot air.
+
+The schematics are included; the component values given are not
+necessarily correct for all situations, but it should be possible to do
+nearly anything you would want with appropriate population options.
+
+The printed circuit board artwork is also available, as Gerbers and an
+Excellon drill file.
+
+
+LICENSING:
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+
+Jonathan Westhues
+user jwesthues, at host cq.cx
+
+May 2007, Cambridge MA
diff --git a/armsrc/LCD.c b/armsrc/LCD.c
index 87be5e3a..65d64ac9 100644
--- a/armsrc/LCD.c
+++ b/armsrc/LCD.c
@@ -6,7 +6,7 @@
 // LCD code
 //-----------------------------------------------------------------------------
 
-#include "../include/proxmark3.h"
+#include "proxmark3.h"
 #include "apps.h"
 #include "LCD.h"
 #include "fonts.h"
diff --git a/armsrc/appmain.c b/armsrc/appmain.c
index 8c4b45f5..6ef18bc8 100644
--- a/armsrc/appmain.c
+++ b/armsrc/appmain.c
@@ -992,6 +992,9 @@ void UsbPacketReceived(uint8_t *packet, int len)
 			ReadPCF7931();
 			cmd_send(CMD_ACK,0,0,0,0,0);
 			break;
+		case CMD_PCF7931_WRITE:
+			WritePCF7931(c->d.asDwords[0],c->d.asDwords[1],c->d.asDwords[2],c->d.asDwords[3],c->d.asDwords[4],c->d.asDwords[5],c->d.asDwords[6], c->d.asDwords[9], c->d.asDwords[7]-128,c->d.asDwords[8]-128, c->arg[0], c->arg[1], c->arg[2]);
+			break;
 		case CMD_EM4X_READ_WORD:
 			EM4xReadWord(c->arg[1], c->arg[2],c->d.asBytes[0]);
 			break;
@@ -1212,6 +1215,24 @@ void UsbPacketReceived(uint8_t *packet, int len)
 	case CMD_ICLASS_EML_MEMSET:
 			emlSet(c->d.asBytes,c->arg[0], c->arg[1]);
 			break;
+		case CMD_ICLASS_WRITEBLOCK:
+			iClass_WriteBlock(c->arg[0], c->d.asBytes);
+			break;
+		case CMD_ICLASS_READCHECK:  // auth step 1
+			iClass_ReadCheck(c->arg[0], c->arg[1]);
+			break;
+		case CMD_ICLASS_READBLOCK:
+			iClass_ReadBlk(c->arg[0]);
+			break;
+		case CMD_ICLASS_AUTHENTICATION: //check
+			iClass_Authentication(c->d.asBytes);
+			break;
+		case CMD_ICLASS_DUMP:
+			iClass_Dump(c->arg[0], c->arg[1]);
+			break;
+		case CMD_ICLASS_CLONE:
+			iClass_Clone(c->arg[0], c->arg[1], c->d.asBytes);
+			break;
 #endif
 
 		case CMD_BUFF_CLEAR:
diff --git a/armsrc/apps.h b/armsrc/apps.h
index b4cab979..f88e6e91 100644
--- a/armsrc/apps.h
+++ b/armsrc/apps.h
@@ -94,6 +94,11 @@ int DemodPCF7931(uint8_t **outBlocks);
 int IsBlock0PCF7931(uint8_t *Block);
 int IsBlock1PCF7931(uint8_t *Block);
 void ReadPCF7931();
+void SendCmdPCF7931(uint32_t * tab);
+bool AddBytePCF7931(uint8_t byte, uint32_t * tab, int32_t l, int32_t p);
+bool AddBitPCF7931(bool b, uint32_t * tab, int32_t l, int32_t p);
+bool AddPatternPCF7931(uint32_t a, uint32_t b, uint32_t c, uint32_t * tab);
+void WritePCF7931(uint8_t pass1, uint8_t pass2, uint8_t pass3, uint8_t pass4, uint8_t pass5, uint8_t pass6, uint8_t pass7, uint16_t init_delay, int32_t l, int32_t p, uint8_t address, uint8_t byte, uint8_t data);
 void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode);
 void EM4xWriteWord(uint32_t Data, uint8_t Address, uint32_t Pwd, uint8_t PwdMode);
 
@@ -190,6 +195,13 @@ void SimulateIClass(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain
 void ReaderIClass(uint8_t arg0);
 void ReaderIClass_Replay(uint8_t arg0,uint8_t *MAC);
 void IClass_iso14443A_GetPublic(uint8_t arg0);
+void iClass_Authentication(uint8_t *MAC);
+void iClass_WriteBlock(uint8_t blockNo, uint8_t *data);
+void iClass_ReadBlk(uint8_t blockNo);
+bool iClass_ReadBlock(uint8_t blockNo, uint8_t *readdata);
+void iClass_Dump(uint8_t blockno, uint8_t numblks);
+void iClass_Clone(uint8_t startblock, uint8_t endblock, uint8_t *data);
+void iClass_ReadCheck(uint8_t	blockNo, uint8_t keyType);
 
 void CopyViKingtoT55x7(uint32_t block1,uint32_t block2);
 // hitag2.h
diff --git a/armsrc/iclass.c b/armsrc/iclass.c
index 38b52533..9046d51b 100644
--- a/armsrc/iclass.c
+++ b/armsrc/iclass.c
@@ -1601,16 +1601,16 @@ void setupIclassReader()
 
 }
 
-size_t sendCmdGetResponseWithRetries(uint8_t* command, size_t cmdsize, uint8_t* resp, uint8_t expected_size, uint8_t retries)
+bool sendCmdGetResponseWithRetries(uint8_t* command, size_t cmdsize, uint8_t* resp, uint8_t expected_size, uint8_t retries)
 {
 	while(retries-- > 0)
 	{
 		ReaderTransmitIClass(command, cmdsize);
 		if(expected_size == ReaderReceiveIClass(resp)){
-			return 0;
+			return true;
 		}
 	}
-	return 1;//Error
+	return false;//Error
 }
 
 /**
@@ -1620,14 +1620,17 @@ size_t sendCmdGetResponseWithRetries(uint8_t* command, size_t cmdsize, uint8_t*
  *         1 = Got CSN
  *         2 = Got CSN and CC
  */
-uint8_t handshakeIclassTag(uint8_t *card_data)
+uint8_t handshakeIclassTag_ext(uint8_t *card_data, bool use_credit_key)
 {
 	static uint8_t act_all[]     = { 0x0a };
-	static uint8_t identify[]    = { 0x0c };
+	//static uint8_t identify[]    = { 0x0c };
+	static uint8_t identify[]    = { 0x0c, 0x00, 0x73, 0x33 };
 	static uint8_t select[]      = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
-
-
-	static uint8_t readcheck_cc[]= { 0x88, 0x02,};
+	static uint8_t readcheck_cc[]= { 0x88, 0x02 };
+	if (use_credit_key)
+		readcheck_cc[0] = 0x18;
+	else
+		readcheck_cc[0] = 0x88;
 
 	uint8_t resp[ICLASS_BUFFER_SIZE];
 
@@ -1668,6 +1671,9 @@ uint8_t handshakeIclassTag(uint8_t *card_data)
 
 	return read_status;
 }
+uint8_t handshakeIclassTag(uint8_t *card_data){
+	return handshakeIclassTag_ext(card_data, false);
+}
 
 
 // Reader iClass Anticollission
@@ -1687,6 +1693,9 @@ void ReaderIClass(uint8_t arg0) {
 	uint8_t result_status = 0;
     bool abort_after_read = arg0 & FLAG_ICLASS_READER_ONLY_ONCE;
 	bool try_once = arg0 & FLAG_ICLASS_READER_ONE_TRY;
+	bool use_credit_key = false;
+	if (arg0 & FLAG_ICLASS_READER_CEDITKEY)
+		use_credit_key = true;
 	set_tracing(TRUE);
     setupIclassReader();
 
@@ -1701,7 +1710,7 @@ void ReaderIClass(uint8_t arg0) {
 		}
 		WDT_HIT();
 
-		read_status = handshakeIclassTag(card_data);
+		read_status = handshakeIclassTag_ext(card_data, use_credit_key);
 
 		if(read_status == 0) continue;
 		if(read_status == 1) result_status = FLAG_ICLASS_READER_CSN;
@@ -1715,11 +1724,10 @@ void ReaderIClass(uint8_t arg0) {
 		if(arg0 & FLAG_ICLASS_READER_CONF)
 		{
 			if(sendCmdGetResponseWithRetries(readConf, sizeof(readConf),card_data+8, 10, 10))
-			{
-				Dbprintf("Failed to dump config block");
-			}else
 			{
 				result_status |= FLAG_ICLASS_READER_CONF;
+			} else {
+				Dbprintf("Failed to dump config block");
 			}
 		}
 
@@ -1727,10 +1735,9 @@ void ReaderIClass(uint8_t arg0) {
 		if(arg0 & FLAG_ICLASS_READER_AA){
 			if(sendCmdGetResponseWithRetries(readAA, sizeof(readAA),card_data+(8*4), 10, 10))
 			{
-//				Dbprintf("Failed to dump AA block");
-			}else
-			{
 				result_status |= FLAG_ICLASS_READER_AA;
+			} else {
+				//Dbprintf("Failed to dump AA block");
 			}
 		}
 
@@ -1814,7 +1821,7 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {
 				//for now replay captured auth (as cc not updated)
 				memcpy(check+5,MAC,4);
 
-		if(sendCmdGetResponseWithRetries(check, sizeof(check),resp, 4, 5))
+		if(!sendCmdGetResponseWithRetries(check, sizeof(check),resp, 4, 5))
 		{
 				  Dbprintf("Error: Authentication Fail!");
 			continue;
@@ -1826,7 +1833,7 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {
 				read[2] = crc >> 8;
 				read[3] = crc & 0xff;
 
-		if(sendCmdGetResponseWithRetries(read, sizeof(read),resp, 10, 10))
+		if(!sendCmdGetResponseWithRetries(read, sizeof(read),resp, 10, 10))
 		{
 			Dbprintf("Dump config (block 1) failed");
 			continue;
@@ -1853,7 +1860,7 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {
 				    read[2] = crc >> 8;
 				    read[3] = crc & 0xff;
 
-			if(!sendCmdGetResponseWithRetries(read, sizeof(read), resp, 10, 10))
+			if(sendCmdGetResponseWithRetries(read, sizeof(read), resp, 10, 10))
 			{
 				         Dbprintf("     %02x: %02x %02x %02x %02x %02x %02x %02x %02x",
 						 block, resp[0], resp[1], resp[2],
@@ -1904,130 +1911,129 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {
 	LED_A_OFF();
 }
 
-//2. Create Read method (cut-down from above) based off responses from 1. 
-//   Since we have the MAC could continue to use replay function.
-//3. Create Write method
-/*
-void IClass_iso14443A_write(uint8_t arg0, uint8_t blockNo, uint8_t *data, uint8_t *MAC) {
-	uint8_t act_all[]     = { 0x0a };
-	uint8_t identify[]    = { 0x0c };
-	uint8_t select[]      = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
-	uint8_t readcheck_cc[]= { 0x88, 0x02 };
-	uint8_t check[]       = { 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
-	uint8_t read[]        = { 0x0c, 0x00, 0x00, 0x00 };
-	uint8_t write[]       = { 0x87, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
-	
-    uint16_t crc = 0;
-	
-	uint8_t* resp = (((uint8_t *)BigBuf) + 3560);
+void iClass_ReadCheck(uint8_t	blockNo, uint8_t keyType) {
+	uint8_t readcheck[] = { keyType, blockNo };
+	uint8_t resp[] = {0,0,0,0,0,0,0,0};
+	size_t isOK = 0;
+	isOK = sendCmdGetResponseWithRetries(readcheck, sizeof(readcheck), resp, sizeof(resp), 6);
+	cmd_send(CMD_ACK,isOK,0,0,0,0);
+}
 
-	// Reset trace buffer
-	memset(trace, 0x44, RECV_CMD_OFFSET);
-	traceLen = 0;
+void iClass_Authentication(uint8_t *MAC) {
+	uint8_t check[] = { ICLASS_CMD_CHECK, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+	uint8_t resp[ICLASS_BUFFER_SIZE];
+	memcpy(check+5,MAC,4);
+	bool isOK;
+	isOK = sendCmdGetResponseWithRetries(check, sizeof(check), resp, 4, 6);
+	cmd_send(CMD_ACK,isOK,0,0,0,0);
+}
+bool iClass_ReadBlock(uint8_t blockNo, uint8_t *readdata) {
+	uint8_t readcmd[] = {ICLASS_CMD_READ_OR_IDENTIFY, blockNo, 0x00, 0x00}; //0x88, 0x00 // can i use 0C?
+	char bl = blockNo;
+	uint16_t rdCrc = iclass_crc16(&bl, 1);
+	readcmd[2] = rdCrc >> 8;
+	readcmd[3] = rdCrc & 0xff;
+	uint8_t resp[] = {0,0,0,0,0,0,0,0,0,0};
+	bool isOK = false;
 
-	// Setup SSC
-	FpgaSetupSsc();
-	// Start from off (no field generated)
-	// Signal field is off with the appropriate LED
-	LED_D_OFF();
-	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-	SpinDelay(200);
+	//readcmd[1] = blockNo;
+	isOK = sendCmdGetResponseWithRetries(readcmd, sizeof(readcmd), resp, 10, 10);
+	memcpy(readdata, resp, sizeof(resp));
 
-	SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
+	return isOK;
+}
 
-	// Now give it time to spin up.
-	// Signal field is on with the appropriate LED
-	FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
-	SpinDelay(200);
+void iClass_ReadBlk(uint8_t blockno) {
+	uint8_t readblockdata[] = {0,0,0,0,0,0,0,0,0,0};
+	bool isOK = false;
+	isOK = iClass_ReadBlock(blockno, readblockdata);
+	cmd_send(CMD_ACK, isOK, 0, 0, readblockdata, 8);
+}
 
-	LED_A_ON();
+void iClass_Dump(uint8_t blockno, uint8_t numblks) {
+	uint8_t readblockdata[] = {0,0,0,0,0,0,0,0,0,0};
+	bool isOK = false;
+	uint8_t blkCnt = 0;
 
-	for(int i=0;i<1;i++) {
-	
-		if(traceLen > TRACE_SIZE) {
-			DbpString("Trace full");
+	BigBuf_free();
+	uint8_t *dataout = BigBuf_malloc(255*8);
+	if (dataout == NULL){
+		Dbprintf("out of memory");
+		OnError(1);
+		return;
+	}
+	memset(dataout,0xFF,255*8);
+
+	for (;blkCnt < numblks; blkCnt++) {
+		isOK = iClass_ReadBlock(blockno+blkCnt, readblockdata);
+		if (!isOK || (readblockdata[0] == 0xBB || readblockdata[7] == 0xBB || readblockdata[2] == 0xBB)) { //try again
+			isOK = iClass_ReadBlock(blockno+blkCnt, readblockdata);
+			if (!isOK) {
+				Dbprintf("Block %02X failed to read", blkCnt+blockno);
 			break;
 		}
-		
-		if (BUTTON_PRESS()) break;
-
-		// Send act_all
-		ReaderTransmitIClass(act_all, 1);
-		// Card present?
-		if(ReaderReceiveIClass(resp)) {
-			ReaderTransmitIClass(identify, 1);
-			if(ReaderReceiveIClass(resp) == 10) {
-				// Select card          
-				memcpy(&select[1],resp,8);
-				ReaderTransmitIClass(select, sizeof(select));
-
-				if(ReaderReceiveIClass(resp) == 10) {
-					Dbprintf("     Selected CSN: %02x %02x %02x %02x %02x %02x %02x %02x",
-					resp[0], resp[1], resp[2],
-					resp[3], resp[4], resp[5],
-					resp[6], resp[7]);
-				}
-				// Card selected
-				Dbprintf("Readcheck on Sector 2");
-				ReaderTransmitIClass(readcheck_cc, sizeof(readcheck_cc));
-				if(ReaderReceiveIClass(resp) == 8) {
-				   Dbprintf("     CC: %02x %02x %02x %02x %02x %02x %02x %02x",
-					resp[0], resp[1], resp[2],
-					resp[3], resp[4], resp[5],
-					resp[6], resp[7]);
-				}else return;
-				Dbprintf("Authenticate");
-				//for now replay captured auth (as cc not updated)
-				memcpy(check+5,MAC,4);
-				Dbprintf("     AA: %02x %02x %02x %02x",
-					check[5], check[6], check[7],check[8]);
-				ReaderTransmitIClass(check, sizeof(check));
-				if(ReaderReceiveIClass(resp) == 4) {
-				   Dbprintf("     AR: %02x %02x %02x %02x",
-					resp[0], resp[1], resp[2],resp[3]);
-				}else {
-				  Dbprintf("Error: Authentication Fail!");
-				  return;
-				}
-				Dbprintf("Write Block");
-				
-				//read configuration for max block number
-				read_success=false;
-				read[1]=1;
-				uint8_t *blockno=&read[1];
-				crc = iclass_crc16((char *)blockno,1);
-				read[2] = crc >> 8;
-				read[3] = crc & 0xff;
-				while(!read_success){
-				      ReaderTransmitIClass(read, sizeof(read));
-				      if(ReaderReceiveIClass(resp) == 10) {
-					 read_success=true;
-					 mem=resp[5];
-					 memory.k16= (mem & 0x80);
-					 memory.book= (mem & 0x20);
-					 memory.k2= (mem & 0x8);
-					 memory.lockauth= (mem & 0x2);
-					 memory.keyaccess= (mem & 0x1);
-
-				      }
-				}
-				if (memory.k16){
-				  cardsize=255;
-				}else cardsize=32;
-				//check card_size
-				
-				memcpy(write+1,blockNo,1);
-				memcpy(write+2,data,8);
-				memcpy(write+10,mac,4);
-				while(!send_success){
-				  ReaderTransmitIClass(write, sizeof(write));
-				  if(ReaderReceiveIClass(resp) == 10) {
-				    write_success=true;
-				}
-			}//
 		}
-		WDT_HIT();
+		memcpy(dataout+(blkCnt*8),readblockdata,8);
 	}
-	
-	LED_A_OFF();
-}*/
+	//return pointer to dump memory in arg3
+	cmd_send(CMD_ACK,isOK,blkCnt,BigBuf_max_traceLen(),0,0);
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+	LEDsoff();
+	BigBuf_free();
+}
+
+bool iClass_WriteBlock_ext(uint8_t blockNo, uint8_t *data) {
+	uint8_t write[] = { ICLASS_CMD_UPDATE, blockNo, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+	//uint8_t readblockdata[10];
+	//write[1] = blockNo;
+	memcpy(write+2, data, 12); // data + mac
+	uint8_t resp[] = {0,0,0,0,0,0,0,0,0,0};
+	bool isOK;
+	isOK = sendCmdGetResponseWithRetries(write,sizeof(write),resp,sizeof(resp),10);
+	if (isOK) {
+		//Dbprintf("WriteResp: %02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",resp[0],resp[1],resp[2],resp[3],resp[4],resp[5],resp[6],resp[7],resp[8],resp[9]);
+		if (memcmp(write+2,resp,8)) {
+			//error try again
+			isOK = sendCmdGetResponseWithRetries(write,sizeof(write),resp,sizeof(resp),10);
+		}
+	}
+	return isOK;
+}
+
+void iClass_WriteBlock(uint8_t blockNo, uint8_t *data) {
+	bool isOK = iClass_WriteBlock_ext(blockNo, data);
+	if (isOK){
+		Dbprintf("Write block [%02x] successful",blockNo);
+				}else {
+		Dbprintf("Write block [%02x] failed",blockNo);		
+	}
+	cmd_send(CMD_ACK,isOK,0,0,0,0);	
+}
+
+void iClass_Clone(uint8_t startblock, uint8_t endblock, uint8_t *data) {
+	int i;
+	int written = 0;
+	int total_block = (endblock - startblock) + 1;
+	for (i = 0; i < total_block;i++){
+		// block number
+		if (iClass_WriteBlock_ext(i+startblock, data+(i*12))){
+			Dbprintf("Write block [%02x] successful",i + startblock);
+			written++;
+		} else {
+			if (iClass_WriteBlock_ext(i+startblock, data+(i*12))){
+				Dbprintf("Write block [%02x] successful",i + startblock);
+				written++;
+			} else {
+				Dbprintf("Write block [%02x] failed",i + startblock);
+			}
+		}
+	}
+	if (written == total_block)
+		Dbprintf("Clone complete");
+	else
+		Dbprintf("Clone incomplete");   
+
+	cmd_send(CMD_ACK,1,0,0,0,0);
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+	LEDsoff();
+}
diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c
index a723f502..71f000d0 100644
--- a/armsrc/iso14443a.c
+++ b/armsrc/iso14443a.c
@@ -947,10 +947,10 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data)
 	uint8_t sak;
 					
 	// PACK response to PWD AUTH for EV1/NTAG
-	uint8_t response8[4];
+	uint8_t response8[4] =  {0,0,0,0};
 	
 	// The first response contains the ATQA (note: bytes are transmitted in reverse order).
-	uint8_t response1[2];
+	uint8_t response1[2] =  {0,0};
 	
 	switch (tagType) {
 		case 1: { // MIFARE Classic
@@ -1299,7 +1299,8 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data)
 			if ( tagType == 7 ) {
 				p_response =  &responses[8]; // PACK response
 				uint32_t pwd = bytes_to_num(receivedCmd+1,4);
-				Dbprintf("Auth attempt: %08x", pwd);	
+				
+				if ( MF_DBGLEVEL >= 3)  Dbprintf("Auth attempt: %08x", pwd);	
 			}
 		}
 		else {
@@ -2206,28 +2207,6 @@ int32_t dist_nt(uint32_t nt1, uint32_t nt2) {
 	return(-99999); // either nt1 or nt2 are invalid nonces
 }
 
-int32_t dist_nt_ex32(uint32_t nt1, uint32_t nt2, bool *result) {
-
-	uint16_t i;
-	uint32_t nttmp1, nttmp2;
-
-	if (nt1 == nt2) return 0;
-
-	nttmp1 = nt1;
-	nttmp2 = nt2;
-	
-	*result = true;
-	for (i = 1; i < 0xFFFFFFFF; i++) {
-		nttmp1 = prng_successor(nttmp1, 1);
-		if (nttmp1 == nt2) return i;
-			
-		nttmp2 = prng_successor(nttmp2, 1);
-			if (nttmp2 == nt1) return -i;
-		}
-	
-	*result = false;
-	return(-99999); // either nt1 or nt2 are invalid nonces
-}
 
 //-----------------------------------------------------------------------------
 // Recover several bits of the cypher stream. This implements (first stages of)
diff --git a/armsrc/lfops.c b/armsrc/lfops.c
index 8feaa6ae..74086d36 100644
--- a/armsrc/lfops.c
+++ b/armsrc/lfops.c
@@ -2125,3 +2125,260 @@ void CopyViKingtoT55x7(uint32_t block1,uint32_t block2)
     DbpString("DONE!");
 }
 
+
+#define T0_PCF 8 //period for the pcf7931 in us
+
+/* Write on a byte of a PCF7931 tag
+ * @param address : address of the block to write
+   @param byte : address of the byte to write
+    @param data : data to write
+ */
+void WritePCF7931(uint8_t pass1, uint8_t pass2, uint8_t pass3, uint8_t pass4, uint8_t pass5, uint8_t pass6, uint8_t pass7, uint16_t init_delay, int32_t l, int32_t p, uint8_t address, uint8_t byte, uint8_t data)
+{
+
+	uint32_t tab[1024]={0}; // data times frame
+	uint32_t u = 0;
+	uint8_t parity = 0;
+	bool comp = 0;
+
+
+	//BUILD OF THE DATA FRAME
+
+	//alimentation of the tag (time for initializing)
+	AddPatternPCF7931(init_delay, 0, 8192/2*T0_PCF, tab);
+
+	//PMC
+	Dbprintf("Initialization delay : %d us", init_delay);
+	AddPatternPCF7931(8192/2*T0_PCF + 319*T0_PCF+70, 3*T0_PCF, 29*T0_PCF, tab);
+
+	Dbprintf("Offsets : %d us on the low pulses width, %d us on the low pulses positions", l, p);
+
+	//password indication bit
+	AddBitPCF7931(1, tab, l, p);
+
+
+	//password (on 56 bits)
+	Dbprintf("Password (LSB first on each byte) : %02x %02x %02x %02x %02x %02x %02x", pass1,pass2,pass3,pass4,pass5,pass6,pass7);
+	AddBytePCF7931(pass1, tab, l, p);
+	AddBytePCF7931(pass2, tab, l, p);
+	AddBytePCF7931(pass3, tab, l, p);
+	AddBytePCF7931(pass4, tab, l, p);
+	AddBytePCF7931(pass5, tab, l, p);
+	AddBytePCF7931(pass6, tab, l, p);
+	AddBytePCF7931(pass7, tab, l, p);
+
+
+	//programming mode (0 or 1)
+	AddBitPCF7931(0, tab, l, p);
+
+	//block adress on 6 bits
+	Dbprintf("Block address : %02x", address);
+	for (u=0; u<6; u++)
+	{
+		if (address&(1<<u)) {	// bit 1
+			 parity++;
+			 AddBitPCF7931(1, tab, l, p);
+		} else{					// bit 0
+			 AddBitPCF7931(0, tab, l, p);
+		}
+	}
+
+	//byte address on 4 bits
+	Dbprintf("Byte address : %02x", byte);
+	for (u=0; u<4; u++)
+	{
+		if (byte&(1<<u)) {	// bit 1
+			 parity++;
+			 AddBitPCF7931(1, tab, l, p);
+		} else{				// bit 0
+			 AddBitPCF7931(0, tab, l, p);
+		}
+	}
+
+	//data on 8 bits
+	Dbprintf("Data : %02x", data);
+	for (u=0; u<8; u++)
+	{
+		if (data&(1<<u)) {	// bit 1
+			 parity++;
+			 AddBitPCF7931(1, tab, l, p);
+		} else{				//bit 0
+			 AddBitPCF7931(0, tab, l, p);
+		}
+	}
+
+
+	//parity bit
+	if((parity%2)==0){
+	 	AddBitPCF7931(0, tab, l, p); //even parity
+	}else{
+		AddBitPCF7931(1, tab, l, p);//odd parity
+	}
+
+	//time access memory
+	AddPatternPCF7931(5120+2680, 0, 0, tab);
+
+	//conversion of the scale time
+	for(u=0;u<500;u++){
+		tab[u]=(tab[u] * 3)/2;
+	}
+
+
+	//compennsation of the counter reload
+	while (!comp){
+		comp = 1;
+		for(u=0;tab[u]!=0;u++){
+			if(tab[u] > 0xFFFF){
+			  tab[u] -= 0xFFFF;
+			  comp = 0;
+			}
+		}
+	}
+
+	SendCmdPCF7931(tab);
+}
+
+
+
+/* Send a trame to a PCF7931 tags
+ * @param tab : array of the data frame
+ */
+
+void SendCmdPCF7931(uint32_t * tab){
+	uint16_t u=0;
+	uint16_t tempo=0;
+
+	Dbprintf("SENDING DATA FRAME...");
+
+	FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+
+	FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_PASSTHRU );
+
+	LED_A_ON();
+
+	// steal this pin from the SSP and use it to control the modulation
+	AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT;
+	AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;
+
+	//initialization of the timer
+	AT91C_BASE_PMC->PMC_PCER |= (0x1 << 12) | (0x1 << 13) | (0x1 << 14);
+	AT91C_BASE_TCB->TCB_BMR = AT91C_TCB_TC0XC0S_NONE | AT91C_TCB_TC1XC1S_TIOA0 | AT91C_TCB_TC2XC2S_NONE;
+	AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS; // timer disable
+	AT91C_BASE_TC0->TC_CMR = AT91C_TC_CLKS_TIMER_DIV3_CLOCK;  //clock at 48/32 MHz
+	AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN;
+	AT91C_BASE_TCB->TCB_BCR = 1;
+
+
+	tempo = AT91C_BASE_TC0->TC_CV;
+	for(u=0;tab[u]!= 0;u+=3){
+
+
+		// modulate antenna
+		HIGH(GPIO_SSC_DOUT);
+		while(tempo !=  tab[u]){
+			tempo = AT91C_BASE_TC0->TC_CV;
+		}
+
+		// stop modulating antenna
+		LOW(GPIO_SSC_DOUT);
+		while(tempo !=  tab[u+1]){
+			tempo = AT91C_BASE_TC0->TC_CV;
+		}
+
+
+		// modulate antenna
+		HIGH(GPIO_SSC_DOUT);
+		while(tempo !=  tab[u+2]){
+			tempo = AT91C_BASE_TC0->TC_CV;
+		}
+
+
+	}
+
+	LED_A_OFF();
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+	SpinDelay(200);
+
+
+	AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS; // timer disable
+	DbpString("FINISH !");
+	DbpString("(Could be usefull to send the same trame many times)");
+	LED(0xFFFF, 1000);
+}
+
+
+/* Add a byte for building the data frame of PCF7931 tags 
+ * @param b : byte to add
+ * @param tab : array of the data frame
+ * @param l : offset on low pulse width
+ * @param p : offset on low pulse positioning
+ */
+
+bool AddBytePCF7931(uint8_t byte, uint32_t * tab, int32_t l, int32_t p){
+
+	uint32_t u;
+	for (u=0; u<8; u++)
+	{
+		if (byte&(1<<u)) {	//bit à 1
+			if(AddBitPCF7931(1, tab, l, p)==1)return 1;
+		} else { //bit à 0
+			if(AddBitPCF7931(0, tab, l, p)==1)return 1;
+		}
+	}
+
+	return 0;
+}
+
+/* Add a bits for building the data frame of PCF7931 tags 
+ * @param b : bit to add
+ * @param tab : array of the data frame
+ * @param l : offset on low pulse width
+ * @param p : offset on low pulse positioning
+ */
+bool AddBitPCF7931(bool b, uint32_t * tab, int32_t l, int32_t p){
+	uint8_t u = 0;
+
+	for(u=0;tab[u]!=0;u+=3){} //we put the cursor at the last value of the array
+	
+
+	if(b==1){	//add a bit 1
+		if(u==0) tab[u] = 34*T0_PCF+p;
+		else 	 tab[u] = 34*T0_PCF+tab[u-1]+p;
+
+		tab[u+1] = 6*T0_PCF+tab[u]+l;
+		tab[u+2] = 88*T0_PCF+tab[u+1]-l-p;
+		return 0;
+	}else{ 		//add a bit 0
+
+		if(u==0) tab[u] = 98*T0_PCF+p;
+		else  	 tab[u] = 98*T0_PCF+tab[u-1]+p;
+
+		tab[u+1] = 6*T0_PCF+tab[u]+l;
+		tab[u+2] = 24*T0_PCF+tab[u+1]-l-p;
+		return 0;
+	}
+
+	
+	return 1;
+}
+
+/* Add a custom pattern in the data frame
+ * @param a : delay of the first high pulse
+ * @param b : delay of the low pulse
+ * @param c : delay of the last high pulse
+ * @param tab : array of the data frame
+ */
+bool AddPatternPCF7931(uint32_t a, uint32_t b, uint32_t c, uint32_t * tab){
+	uint32_t u = 0;
+	for(u=0;tab[u]!=0;u+=3){} //we put the cursor at the last value of the array
+
+	if(u==0) tab[u] = a;
+	else tab[u] = a + tab[u-1];
+
+	tab[u+1] = b+tab[u];
+	tab[u+2] = c+tab[u+1];
+
+	return 0;
+}
\ No newline at end of file
diff --git a/client/cmdhf14a.c b/client/cmdhf14a.c
index 8a6e6afd..c85fadda 100644
--- a/client/cmdhf14a.c
+++ b/client/cmdhf14a.c
@@ -602,7 +602,7 @@ int CmdHF14ACmdRaw(const char *cmd) {
 	uint32_t temp;
 
     if (strlen(cmd)<2) {
-        PrintAndLog("Usage: hf 14a raw [-r] [-c] [-p] [-a] [-t] <milliseconds> [-b] <number of bits>  <0A 0B 0C ... hex>");
+        PrintAndLog("Usage: hf 14a raw [-r] [-c] [-p] [-a] [-T] [-t] <milliseconds> [-b] <number of bits>  <0A 0B 0C ... hex>");
         PrintAndLog("       -r    do not read response");
         PrintAndLog("       -c    calculate and append CRC");
         PrintAndLog("       -p    leave the signal field ON after receive");
diff --git a/client/cmdhf14b.c b/client/cmdhf14b.c
index d9e56693..7b67f8c2 100644
--- a/client/cmdhf14b.c
+++ b/client/cmdhf14b.c
@@ -73,10 +73,14 @@ int CmdSrix4kRead(const char *Cmd)
 }
 
 int rawClose(void){
+	UsbCommand resp;
 	UsbCommand c = {CMD_ISO_14443B_COMMAND, {0, 0, 0}};
 	clearCommandBuffer();
 	SendCommand(&c);
+	if (!WaitForResponseTimeout(CMD_ACK,&resp,1000)) {
 	return 0;	
+	}
+	return 0;
 }
 
 int HF14BCmdRaw(bool reply, bool *crc, bool power, uint8_t *data, uint8_t *datalen, bool verbose){
diff --git a/client/cmdhficlass.c b/client/cmdhficlass.c
index e8ba68f1..f17f96ca 100644
--- a/client/cmdhficlass.c
+++ b/client/cmdhficlass.c
@@ -31,11 +31,29 @@
 #include "loclass/fileutils.h"
 #include "protocols.h"
 #include "usb_cmd.h"
+#include "cmdhfmfu.h"
+
+#define llX PRIx64
 
 static int CmdHelp(const char *Cmd);
 
-int xorbits_8(uint8_t val)
-{
+#define ICLASS_KEYS_MAX 8
+static uint8_t iClass_Key_Table[ICLASS_KEYS_MAX][8] = {
+		{ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
+		{ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
+		{ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
+		{ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
+		{ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
+		{ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
+		{ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
+		{ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }
+};
+
+typedef struct iclass_block {
+    uint8_t d[8];
+} iclass_block_t;
+
+int xorbits_8(uint8_t val) {
 	uint8_t res = val ^ (val >> 1); //1st pass
 	res = res ^ (res >> 1); 		// 2nd pass
 	res = res ^ (res >> 2); 		// 3rd pass
@@ -43,20 +61,18 @@ int xorbits_8(uint8_t val)
 	return res & 1;
 }
 
-int CmdHFiClassList(const char *Cmd)
-{
+int CmdHFiClassList(const char *Cmd) {
 	PrintAndLog("Deprecated command, use 'hf list iclass' instead");
 	return 0;
 }
 
-int CmdHFiClassSnoop(const char *Cmd)
-{
+int CmdHFiClassSnoop(const char *Cmd) {
 	UsbCommand c = {CMD_SNOOP_ICLASS};
 	SendCommand(&c);
 	return 0;
 }
-int usage_hf_iclass_sim()
-{
+
+int usage_hf_iclass_sim(void) {
 	PrintAndLog("Usage:  hf iclass sim <option> [CSN]");
 	PrintAndLog("        options");
 	PrintAndLog("                0 <CSN> simulate the given CSN");
@@ -71,8 +87,7 @@ int usage_hf_iclass_sim()
 }
 
 #define NUM_CSNS 15
-int CmdHFiClassSim(const char *Cmd)
-{
+int CmdHFiClassSim(const char *Cmd) {
 	uint8_t simType = 0;
 	uint8_t CSN[8] = {0, 0, 0, 0, 0, 0, 0, 0};
 
@@ -165,15 +180,15 @@ int CmdHFiClassSim(const char *Cmd)
 	return 0;
 }
 
-int HFiClassReader(const char *Cmd, bool loop, bool verbose)
-{
+int HFiClassReader(const char *Cmd, bool loop, bool verbose) {
 	bool tagFound = false;
 	UsbCommand c = {CMD_READER_ICLASS, {FLAG_ICLASS_READER_CSN|
 					FLAG_ICLASS_READER_CONF|FLAG_ICLASS_READER_AA}};
-	if (!loop) c.arg[0] |= FLAG_ICLASS_READER_ONLY_ONCE | FLAG_ICLASS_READER_ONE_TRY;
-	SendCommand(&c);
+	// loop in client not device - else on windows have a communication error
+	c.arg[0] |= FLAG_ICLASS_READER_ONLY_ONCE | FLAG_ICLASS_READER_ONE_TRY;
 	UsbCommand resp;
 	while(!ukbhit()){
+		SendCommand(&c);
 		if (WaitForResponseTimeout(CMD_ACK,&resp, 4500)) {
 			uint8_t readStatus    = resp.arg[0] & 0xff;
 			uint8_t *data = resp.d.asBytes;
@@ -200,16 +215,13 @@ int HFiClassReader(const char *Cmd, bool loop, bool verbose)
 		if (!loop) break;
 	}
 	return 0;
-
 }
 
-int CmdHFiClassReader(const char *Cmd)
-{
+int CmdHFiClassReader(const char *Cmd) {
 	return HFiClassReader(Cmd, true, true);
 }
 
-int CmdHFiClassReader_Replay(const char *Cmd)
-{
+int CmdHFiClassReader_Replay(const char *Cmd) {
 	uint8_t readerType = 0;
 	uint8_t MAC[4]={0x00, 0x00, 0x00, 0x00};
 
@@ -231,181 +243,22 @@ int CmdHFiClassReader_Replay(const char *Cmd)
 	return 0;
 }
 
-int CmdHFiClassReader_Dump(const char *Cmd)
-{
-	uint8_t readerType = 0;
-	uint8_t MAC[4]={0x00,0x00,0x00,0x00};
-	uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-	uint8_t CSN[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-	uint8_t CCNR[12]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-	//uint8_t CC_temp[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-	uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-	uint8_t keytable[128] = {0};
-	int elite = 0;
-	uint8_t *used_key;
-	int i;
-	if (strlen(Cmd)<1)
-	{
-		PrintAndLog("Usage:  hf iclass dump <Key> [e]");
-		PrintAndLog("        Key    - A 16 byte master key");
-		PrintAndLog("        e      - If 'e' is specified, the key is interpreted as the 16 byte");
-		PrintAndLog("                 Custom Key (KCus), which can be obtained via reader-attack");
-		PrintAndLog("                 See 'hf iclass sim 2'. This key should be on iclass-format");
-		PrintAndLog("        sample: hf iclass dump 0011223344556677");
-
-
-		return 0;
-	}
-
-	if (param_gethex(Cmd, 0, KEY, 16))
-	{
-		PrintAndLog("KEY must include 16 HEX symbols");
-		return 1;
-	}
-
-	if (param_getchar(Cmd, 1) == 'e')
-	{
-		PrintAndLog("Elite switch on");
-		elite = 1;
-
-		//calc h2
-		hash2(KEY, keytable);
-		printarr_human_readable("keytable", keytable, 128);
-
-	}
-
-	UsbCommand resp;
-	uint8_t key_sel[8] = {0};
-	uint8_t key_sel_p[8] = { 0 };
-
-	UsbCommand c = {CMD_READER_ICLASS, {0}};
-	c.arg[0] = FLAG_ICLASS_READER_ONLY_ONCE| FLAG_ICLASS_READER_CC;
-	SendCommand(&c);
-
-
-
-	if (!WaitForResponseTimeout(CMD_ACK,&resp,4500))
-	{
-		PrintAndLog("Command execute timeout");
-		return 0;
-	}
-
-	uint8_t isOK    = resp.arg[0] & 0xff;
-	uint8_t * data  = resp.d.asBytes;
-
-	memcpy(CSN,data,8);
-	memcpy(CCNR,data+16,8);
-
-	PrintAndLog("isOk:%02x", isOK);
-
-	if(isOK > 0)
-	{
-		PrintAndLog("CSN: %s",sprint_hex(CSN,8));
-	}
-	if(isOK <= 1){
-		PrintAndLog("Failed to obtain CC! Aborting");
-		return 0;
-	}
-	//Status 2 or higher
-
-	if(elite)
-	{
-		//Get the key index (hash1)
-		uint8_t key_index[8] = {0};
-
-		hash1(CSN, key_index);
-		printvar("hash1", key_index,8);
-		for(i = 0; i < 8 ; i++)
-			key_sel[i] = keytable[key_index[i]] & 0xFF;
-		PrintAndLog("Pre-fortified 'permuted' HS key that would be needed by an iclass reader to talk to above CSN:");
-		printvar("k_sel", key_sel,8);
-		//Permute from iclass format to standard format
-		permutekey_rev(key_sel,key_sel_p);
-		used_key = key_sel_p;
-	}else{
-		used_key = KEY;
-	}
-
-	PrintAndLog("Pre-fortified key that would be needed by the OmniKey reader to talk to above CSN:");
-	printvar("Used key",used_key,8);
-	diversifyKey(CSN,used_key, div_key);
-	PrintAndLog("Hash0, a.k.a diversified key, that is computed using Ksel and stored in the card (Block 3):");
-	printvar("Div key", div_key, 8);
-	printvar("CC_NR:",CCNR,12);
-	doMAC(CCNR,div_key, MAC);
-	printvar("MAC", MAC, 4);
-
-	uint8_t iclass_data[32000] = {0};
-	uint32_t iclass_datalen = 0;
-	uint32_t iclass_blocksFailed = 0;//Set to 1 if dump was incomplete
-
-	UsbCommand d = {CMD_READER_ICLASS_REPLAY, {readerType}};
-	memcpy(d.d.asBytes, MAC, 4);
-	clearCommandBuffer();
-	SendCommand(&d);
-	PrintAndLog("Waiting for device to dump data. Press button on device and key on keyboard to abort...");
-	while (true) {
-		printf(".");
-		if (ukbhit()) {
-			getchar();
-			printf("\naborted via keyboard!\n");
-			break;
-		}
-		if(WaitForResponseTimeout(CMD_ACK,&resp,4500))
-		{
-			uint32_t dataLength = resp.arg[0];
-			iclass_blocksFailed |= resp.arg[1];
-			if(dataLength > 0)
-			{
-				PrintAndLog("Got %d bytes data (total so far %d)" ,dataLength,iclass_datalen);
-				memcpy(iclass_data+iclass_datalen, resp.d.asBytes,dataLength);
-				iclass_datalen += dataLength;
-			}else
-			{//Last transfer, datalength 0 means the dump is finished
-				PrintAndLog("Dumped %d bytes of data from tag. ", iclass_datalen);
-				if(iclass_blocksFailed)
-				{
-					PrintAndLog("OBS! Some blocks failed to be dumped correctly!");
-				}
-				if(iclass_datalen > 0)
-				{
-					char filename[100] = {0};
-					//create a preferred filename
-					snprintf(filename, 100,"iclass_tagdump-%02x%02x%02x%02x%02x%02x%02x%02x",
-							 CSN[0],CSN[1],CSN[2],CSN[3],
-							CSN[4],CSN[5],CSN[6],CSN[7]);
-					//Place the div_key in block 3
-					memcpy(iclass_data+(3*8), div_key, 8);
-					saveFile(filename,"bin",iclass_data, iclass_datalen );
-				}
-				//Aaaand we're finished
-				return 0;
-			}
-		}
-	}
-
-
-	return 0;
-}
-
-int hf_iclass_eload_usage()
-{
-	PrintAndLog("Loads iclass tag-dump into emulator memory on device");
-	PrintAndLog("Usage:  hf iclass eload f <filename>");
-	PrintAndLog("");
-	PrintAndLog("Example: hf iclass eload f iclass_tagdump-aa162d30f8ff12f1.bin");
-	return 0;
-
-}
-
 int iclassEmlSetMem(uint8_t *data, int blockNum, int blocksCount) {
 	UsbCommand c = {CMD_MIFARE_EML_MEMSET, {blockNum, blocksCount, 0}};
 	memcpy(c.d.asBytes, data, blocksCount * 16);
 	SendCommand(&c);
 	return 0;
 }
-int CmdHFiClassELoad(const char *Cmd)
-{
+
+int hf_iclass_eload_usage(void) {
+	PrintAndLog("Loads iclass tag-dump into emulator memory on device");
+	PrintAndLog("Usage:  hf iclass eload f <filename>");
+	PrintAndLog("");
+	PrintAndLog("Example: hf iclass eload f iclass_tagdump-aa162d30f8ff12f1.bin");
+	return 0;
+}
+
+int CmdHFiClassELoad(const char *Cmd) {
 
 	char opt = param_getchar(Cmd, 0);
 	if (strlen(Cmd)<1 || opt == 'h')
@@ -462,23 +315,7 @@ int CmdHFiClassELoad(const char *Cmd)
 	return 0;
 }
 
-int usage_hf_iclass_decrypt()
-{
-	PrintAndLog("Usage: hf iclass decrypt f <tagdump> o ");
-	PrintAndLog("");
-	PrintAndLog("OBS! In order to use this function, the file 'iclass_decryptionkey.bin' must reside");
-	PrintAndLog("in the working directory. The file should be 16 bytes binary data");
-	PrintAndLog("");
-	PrintAndLog("example: hf iclass decrypt f tagdump_12312342343.bin");
-	PrintAndLog("");
-	PrintAndLog("OBS! This is pretty stupid implementation, it tries to decrypt every block after block 6. ");
-	PrintAndLog("Correct behaviour would be to decrypt only the application areas where the key is valid,");
-	PrintAndLog("which is defined by the configuration block.");
-	return 1;
-}
-
-int readKeyfile(const char *filename, size_t len, uint8_t* buffer)
-{
+static int readKeyfile(const char *filename, size_t len, uint8_t* buffer) {
 	FILE *f = fopen(filename, "rb");
 	if(!f) {
 		PrintAndLog("Failed to read from file '%s'", filename);
@@ -502,8 +339,21 @@ int readKeyfile(const char *filename, size_t len, uint8_t* buffer)
 	return 0;
 }
 
-int CmdHFiClassDecrypt(const char *Cmd)
-{
+int usage_hf_iclass_decrypt(void) {
+	PrintAndLog("Usage: hf iclass decrypt f <tagdump>");
+	PrintAndLog("");
+	PrintAndLog("OBS! In order to use this function, the file 'iclass_decryptionkey.bin' must reside");
+	PrintAndLog("in the working directory. The file should be 16 bytes binary data");
+	PrintAndLog("");
+	PrintAndLog("example: hf iclass decrypt f tagdump_12312342343.bin");
+	PrintAndLog("");
+	PrintAndLog("OBS! This is pretty stupid implementation, it tries to decrypt every block after block 6. ");
+	PrintAndLog("Correct behaviour would be to decrypt only the application areas where the key is valid,");
+	PrintAndLog("which is defined by the configuration block.");
+	return 1;
+}
+
+int CmdHFiClassDecrypt(const char *Cmd) {
 	uint8_t key[16] = { 0 };
 	if(readKeyfile("iclass_decryptionkey.bin", 16, key))
 	{
@@ -560,85 +410,763 @@ int CmdHFiClassDecrypt(const char *Cmd)
 	return 0;
 }
 
-int CmdHFiClass_iso14443A_write(const char *Cmd)
-{
-	uint8_t readerType = 0;
-	uint8_t MAC[4]={0x00,0x00,0x00,0x00};
-	uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-	uint8_t CSN[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-	uint8_t CCNR[12]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-	uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-
-	uint8_t blockNo=0;
-	uint8_t bldata[8]={0};
-
-	if (strlen(Cmd)<3)
-	{
-		PrintAndLog("Usage:  hf iclass write <Key> <Block> <Data>");
-		PrintAndLog("        sample: hf iclass write 0011223344556677 10 AAAAAAAAAAAAAAAA");
-		return 0;
-	}
-
-	if (param_gethex(Cmd, 0, KEY, 16))
-	{
-		PrintAndLog("KEY must include 16 HEX symbols");
-		return 1;
-	}
-
-	blockNo = param_get8(Cmd, 1);
-	if (blockNo>32)
-	{
-		PrintAndLog("Error: Maximum number of blocks is 32 for iClass 2K Cards!");
-		return 1;
-	}
-	if (param_gethex(Cmd, 2, bldata, 8))
-	{
-		PrintAndLog("Block data must include 8 HEX symbols");
-		return 1;
-	}
-
-	UsbCommand c = {CMD_ICLASS_ISO14443A_WRITE, {0}};
-	SendCommand(&c);
-	UsbCommand resp;
-
-	if (WaitForResponseTimeout(CMD_ACK,&resp,4500)) {
-		uint8_t isOK    = resp.arg[0] & 0xff;
-		uint8_t * data  = resp.d.asBytes;
-
-		memcpy(CSN,data,8);
-		memcpy(CCNR,data+8,8);
-		PrintAndLog("DEBUG: %s",sprint_hex(CSN,8));
-		PrintAndLog("DEBUG: %s",sprint_hex(CCNR,8));
-		PrintAndLog("isOk:%02x", isOK);
-	} else {
-		PrintAndLog("Command execute timeout");
-	}
-
-	diversifyKey(CSN,KEY, div_key);
-
-	PrintAndLog("Div Key: %s",sprint_hex(div_key,8));
-	doMAC(CCNR, div_key, MAC);
-
-	UsbCommand c2 = {CMD_ICLASS_ISO14443A_WRITE, {readerType,blockNo}};
-	memcpy(c2.d.asBytes, bldata, 8);
-	memcpy(c2.d.asBytes+8, MAC, 4);
-	SendCommand(&c2);
-
-	if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
-		uint8_t isOK    = resp.arg[0] & 0xff;
-		uint8_t * data  = resp.d.asBytes;
-
-		if (isOK)
-			PrintAndLog("isOk:%02x data:%s", isOK, sprint_hex(data, 4));
-		else
-			PrintAndLog("isOk:%02x", isOK);
-	} else {
-		PrintAndLog("Command execute timeout");
-	}
+int usage_hf_iclass_encrypt(void) {
+	PrintAndLog("Usage: hf iclass encrypt <BlockData>");
+	PrintAndLog("");
+	PrintAndLog("OBS! In order to use this function, the file 'iclass_decryptionkey.bin' must reside");
+	PrintAndLog("in the working directory. The file should be 16 bytes binary data");
+	PrintAndLog("");
+	PrintAndLog("example: hf iclass encrypt 0102030405060708");
+	PrintAndLog("");
 	return 0;
 }
-int CmdHFiClass_loclass(const char *Cmd)
-{
+
+static int iClassEncryptBlkData(uint8_t *blkData) {
+	uint8_t key[16] = { 0 };
+	if(readKeyfile("iclass_decryptionkey.bin", 16, key))
+	{
+		usage_hf_iclass_encrypt();
+		return 1;
+	}
+	PrintAndLog("Decryption file found... ");
+
+	uint8_t encryptedData[16];
+	uint8_t *encrypted = encryptedData;
+	des3_context ctx = { DES_DECRYPT ,{ 0 } };
+	des3_set2key_enc( &ctx, key);
+	
+	des3_crypt_ecb(&ctx, blkData,encrypted);
+	//printvar("decrypted block", decrypted, 8);
+	memcpy(blkData,encrypted,8);
+
+	return 1;
+}
+
+int CmdHFiClassEncryptBlk(const char *Cmd) {
+	uint8_t blkData[8] = {0};
+	char opt = param_getchar(Cmd, 0);
+	if (strlen(Cmd)<1 || opt == 'h')
+		return usage_hf_iclass_encrypt();
+
+	//get the bytes to encrypt
+	if (param_gethex(Cmd, 0, blkData, 16))
+	{
+		PrintAndLog("BlockData must include 16 HEX symbols");
+		return 0;
+	}
+	if (!iClassEncryptBlkData(blkData)) return 0;
+
+	printvar("encrypted block", blkData, 8);
+	return 1;
+}
+
+void Calc_wb_mac(uint8_t blockno, uint8_t *data, uint8_t *div_key, uint8_t MAC[4]) {
+	uint8_t WB[9];
+	WB[0] = blockno;
+	memcpy(WB + 1,data,8);
+	doMAC_N(WB,sizeof(WB),div_key,MAC);
+	//printf("Cal wb mac block [%02x][%02x%02x%02x%02x%02x%02x%02x%02x] : MAC [%02x%02x%02x%02x]",WB[0],WB[1],WB[2],WB[3],WB[4],WB[5],WB[6],WB[7],WB[8],MAC[0],MAC[1],MAC[2],MAC[3]);
+}
+
+static bool select_only(uint8_t *CSN, uint8_t *CCNR, bool use_credit_key, bool verbose) {
+	UsbCommand resp;
+
+	UsbCommand c = {CMD_READER_ICLASS, {0}};
+	c.arg[0] = FLAG_ICLASS_READER_ONLY_ONCE | FLAG_ICLASS_READER_CC | FLAG_ICLASS_READER_ONE_TRY;
+	if (use_credit_key)
+		c.arg[0] |= FLAG_ICLASS_READER_CEDITKEY;
+
+	clearCommandBuffer();
+	SendCommand(&c);
+	if (!WaitForResponseTimeout(CMD_ACK,&resp,4500))
+	{
+		PrintAndLog("Command execute timeout");
+		return false;
+	}
+
+	uint8_t isOK = resp.arg[0] & 0xff;
+	uint8_t *data = resp.d.asBytes;
+
+	memcpy(CSN,data,8);
+	if (CCNR!=NULL)memcpy(CCNR,data+16,8);
+	if(isOK > 0)
+	{
+		if (verbose) PrintAndLog("CSN: %s",sprint_hex(CSN,8));
+	}
+	if(isOK <= 1){
+		PrintAndLog("Failed to obtain CC! Aborting");
+		return false;
+	}
+	return true;	
+}
+
+static bool select_and_auth(uint8_t *KEY, uint8_t *MAC, uint8_t *div_key, bool use_credit_key, bool elite, bool verbose) {
+	uint8_t CSN[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+	uint8_t CCNR[12]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+
+	if (!select_only(CSN, CCNR, use_credit_key, verbose))
+		return false;
+
+	//get div_key
+	HFiClassCalcDivKey(CSN, KEY, div_key, elite);
+
+	doMAC(CCNR, div_key, MAC);
+	UsbCommand resp;
+	UsbCommand d = {CMD_ICLASS_AUTHENTICATION, {0}};
+	memcpy(d.d.asBytes, MAC, 4);
+	clearCommandBuffer();
+	SendCommand(&d);
+	if (!WaitForResponseTimeout(CMD_ACK,&resp,4500))
+	{
+		PrintAndLog("Auth Command execute timeout");
+		return false;
+	}
+		uint8_t isOK    = resp.arg[0] & 0xff;
+	if (!isOK) {
+		PrintAndLog("Authentication error");
+		return false;
+	}
+	return true;
+}
+
+int usage_hf_iclass_dump(void) {
+	PrintAndLog("Usage:  hf iclass dump f <fileName> k <Key> c <CreditKey> e\n");
+	PrintAndLog("Options:");
+	PrintAndLog("  f <filename> : specify a filename to save dump to");
+	PrintAndLog("  k <Key>      : *Access Key as 16 hex symbols or 1 hex to select key from memory");
+	PrintAndLog("  c <CreditKey>: Credit Key as 16 hex symbols or 1 hex to select key from memory");
+	PrintAndLog("  e            : If 'e' is specified, the key is interpreted as the 16 byte");
+	PrintAndLog("                 Custom Key (KCus), which can be obtained via reader-attack");
+	PrintAndLog("                 See 'hf iclass sim 2'. This key should be on iclass-format");
+	PrintAndLog("  NOTE: * = required");
+  PrintAndLog("Samples:");
+	PrintAndLog("  hf iclass dump k 001122334455667B");
+	PrintAndLog("  hf iclass dump k AAAAAAAAAAAAAAAA c 001122334455667B");
+	PrintAndLog("  hf iclass dump k AAAAAAAAAAAAAAAA e");
+	return 0;
+}
+
+int CmdHFiClassReader_Dump(const char *Cmd) {
+
+	uint8_t MAC[4] = {0x00,0x00,0x00,0x00};
+	uint8_t div_key[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+	uint8_t c_div_key[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+	uint8_t blockno = 0;
+	uint8_t numblks = 0;
+	uint8_t maxBlk = 31;
+	uint8_t app_areas = 1;
+	uint8_t kb = 2;
+	uint8_t KEY[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+	uint8_t CreditKEY[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+	uint8_t keyNbr = 0;
+	uint8_t dataLen = 0;
+	uint8_t fileNameLen = 0;
+	char filename[FILE_PATH_SIZE]={0};
+	char tempStr[50] = {0};
+	bool have_debit_key = false;
+	bool have_credit_key = false;
+	bool use_credit_key = false;
+	bool elite = false;
+	bool errors = false;
+	uint8_t cmdp = 0;
+
+	while(param_getchar(Cmd, cmdp) != 0x00)
+	{
+		switch(param_getchar(Cmd, cmdp))
+		{
+		case 'h':
+		case 'H':
+			return usage_hf_iclass_dump();
+		case 'c':
+		case 'C':
+			have_credit_key = true;
+			dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+			if (dataLen == 16) {
+				errors = param_gethex(tempStr, 0, CreditKEY, dataLen);
+			} else if (dataLen == 1) {
+				keyNbr = param_get8(Cmd, cmdp+1);
+				if (keyNbr <= ICLASS_KEYS_MAX) {
+					memcpy(CreditKEY, iClass_Key_Table[keyNbr], 8);
+				} else {
+					PrintAndLog("\nERROR: Credit KeyNbr is invalid\n");
+					errors = true;
+				}
+			} else {
+				PrintAndLog("\nERROR: Credit Key is incorrect length\n");
+				errors = true;
+			}
+			cmdp += 2;
+			break;
+		case 'e':
+		case 'E':
+			elite = true;
+			cmdp++;
+			break;
+		case 'f':
+		case 'F':
+			fileNameLen = param_getstr(Cmd, cmdp+1, filename); 
+			if (fileNameLen < 1) {
+				PrintAndLog("No filename found after f");
+				errors = true;
+			}
+			cmdp += 2;
+			break;
+		case 'k':
+		case 'K':
+			have_debit_key = true;
+			dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+			if (dataLen == 16) { 
+				errors = param_gethex(tempStr, 0, KEY, dataLen);
+			} else if (dataLen == 1) {
+				keyNbr = param_get8(Cmd, cmdp+1);
+				if (keyNbr <= ICLASS_KEYS_MAX) {
+					memcpy(KEY, iClass_Key_Table[keyNbr], 8);
+				} else {
+					PrintAndLog("\nERROR: Credit KeyNbr is invalid\n");
+					errors = true;
+				}
+			} else {
+				PrintAndLog("\nERROR: Credit Key is incorrect length\n");
+				errors = true;
+			}
+			cmdp += 2;
+			break;
+		default:
+			PrintAndLog("Unknown parameter '%c'\n", param_getchar(Cmd, cmdp));
+			errors = true;
+			break;
+		}
+		if(errors) return usage_hf_iclass_dump();
+	}
+
+	if (cmdp < 2) return usage_hf_iclass_dump();
+	// if no debit key given try credit key on AA1 (not for iclass but for some picopass this will work)
+	if (!have_debit_key && have_credit_key) use_credit_key = true;
+
+	//get config and first 3 blocks
+	UsbCommand c = {CMD_READER_ICLASS, {FLAG_ICLASS_READER_CSN |
+					FLAG_ICLASS_READER_CONF | FLAG_ICLASS_READER_ONLY_ONCE | FLAG_ICLASS_READER_ONE_TRY}};
+	UsbCommand resp;
+	uint8_t tag_data[255*8];
+
+	clearCommandBuffer();
+	SendCommand(&c);
+	if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) {
+		PrintAndLog("Command execute timeout");
+		ul_switch_off_field();
+		return 0;
+	}
+	uint8_t readStatus = resp.arg[0] & 0xff;
+		uint8_t * data  = resp.d.asBytes;
+
+	if(readStatus == 0){
+		PrintAndLog("No tag found...");
+		ul_switch_off_field();
+	return 0;
+}
+	if( readStatus & (FLAG_ICLASS_READER_CSN|FLAG_ICLASS_READER_CONF|FLAG_ICLASS_READER_CC)){
+		memcpy(tag_data, data, 8*3);
+		blockno+=2; // 2 to force re-read of block 2 later. (seems to respond differently..)
+		numblks = data[8];
+		getMemConfig(data[13], data[12], &maxBlk, &app_areas, &kb);
+		// large memory - not able to dump pages currently
+		if (numblks > maxBlk) numblks = maxBlk;
+	}
+	ul_switch_off_field();
+	// authenticate debit key and get div_key - later store in dump block 3
+	if (!select_and_auth(KEY, MAC, div_key, use_credit_key, elite, false)){
+		//try twice - for some reason it sometimes fails the first time...
+		if (!select_and_auth(KEY, MAC, div_key, use_credit_key, elite, false)){
+			ul_switch_off_field();
+			return 0;
+		}
+	}
+	
+	// begin dump
+	UsbCommand w = {CMD_ICLASS_DUMP, {blockno, numblks-blockno+1}};
+	clearCommandBuffer();
+	SendCommand(&w);
+	if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) {
+		PrintAndLog("Command execute time-out 1");
+		ul_switch_off_field();
+		return 1;
+	}
+	uint32_t blocksRead = resp.arg[1];
+	uint8_t isOK = resp.arg[0] & 0xff;
+	if (!isOK && !blocksRead) {
+		PrintAndLog("Read Block Failed");
+		ul_switch_off_field();
+		return 0;
+	}
+	uint32_t startindex = resp.arg[2];
+	if (blocksRead*8 > sizeof(tag_data)-(blockno*8)) {
+		PrintAndLog("Data exceeded Buffer size!");
+		blocksRead = (sizeof(tag_data)/8) - blockno;
+	}
+	// response ok - now get bigbuf content of the dump
+	GetFromBigBuf(tag_data+(blockno*8), blocksRead*8, startindex);
+	WaitForResponse(CMD_ACK,NULL);
+	size_t gotBytes = blocksRead*8 + blockno*8;
+
+	// try AA2
+	if (have_credit_key) {
+		//turn off hf field before authenticating with different key
+		ul_switch_off_field();
+		memset(MAC,0,4);
+		// AA2 authenticate credit key and git c_div_key - later store in dump block 4
+		if (!select_and_auth(CreditKEY, MAC, c_div_key, true, false, false)){
+			//try twice - for some reason it sometimes fails the first time...
+			if (!select_and_auth(CreditKEY, MAC, c_div_key, true, false, false)){
+				ul_switch_off_field();
+				return 0;
+			}
+		}
+		// do we still need to read more block?  (aa2 enabled?)
+		if (maxBlk > blockno+numblks+1) {
+			// setup dump and start
+			w.arg[0] = blockno + blocksRead;
+			w.arg[1] = maxBlk - (blockno + blocksRead);
+			clearCommandBuffer();
+			SendCommand(&w);
+			if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) {
+				PrintAndLog("Command execute timeout 2");
+				ul_switch_off_field();
+				return 0;
+			}
+			uint8_t isOK = resp.arg[0] & 0xff;
+			blocksRead = resp.arg[1];
+			if (!isOK && !blocksRead) {
+				PrintAndLog("Read Block Failed 2");
+				ul_switch_off_field();
+				return 0;
+			}		
+
+			startindex = resp.arg[2];
+			if (blocksRead*8 > sizeof(tag_data)-gotBytes) {
+				PrintAndLog("Data exceeded Buffer size!");
+				blocksRead = (sizeof(tag_data) - gotBytes)/8;
+			}
+			// get dumped data from bigbuf
+			GetFromBigBuf(tag_data+gotBytes, blocksRead*8, startindex);
+			WaitForResponse(CMD_ACK,NULL);
+
+			gotBytes += blocksRead*8;			
+		} else { //field is still on - turn it off...
+			ul_switch_off_field();
+		}
+	}
+
+	// add diversified keys to dump
+	if (have_debit_key) memcpy(tag_data+(3*8),div_key,8);
+	if (have_credit_key) memcpy(tag_data+(4*8),c_div_key,8);
+	// print the dump
+	printf("CSN   |00| %02X %02X %02X %02X %02X %02X %02X %02X |\n",tag_data[0],tag_data[1],tag_data[2]
+		  ,tag_data[3],tag_data[4],tag_data[5],tag_data[6],tag_data[7]);
+	printIclassDumpContents(tag_data, 1, (gotBytes/8)-1, gotBytes-8);
+
+	if (filename[0] == 0){
+		snprintf(filename, FILE_PATH_SIZE,"iclass_tagdump-%02x%02x%02x%02x%02x%02x%02x%02x",
+		    tag_data[0],tag_data[1],tag_data[2],tag_data[3],
+		    tag_data[4],tag_data[5],tag_data[6],tag_data[7]);
+	}
+
+	// save the dump to .bin file
+	PrintAndLog("Saving dump file - %d blocks read", gotBytes/8);
+	saveFile(filename, "bin", tag_data, gotBytes);
+	return 1;
+}
+
+static int WriteBlock(uint8_t blockno, uint8_t *bldata, uint8_t *KEY, bool use_credit_key, bool elite, bool verbose) {
+	uint8_t MAC[4]={0x00,0x00,0x00,0x00};
+	uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+	if (!select_and_auth(KEY, MAC, div_key, use_credit_key, elite, verbose))
+		return 0;
+
+	UsbCommand resp;
+
+	Calc_wb_mac(blockno,bldata,div_key,MAC);
+	UsbCommand w = {CMD_ICLASS_WRITEBLOCK, {blockno}};
+	memcpy(w.d.asBytes, bldata, 8);
+	memcpy(w.d.asBytes + 8, MAC, 4);
+	
+	clearCommandBuffer();
+	SendCommand(&w);
+	if (!WaitForResponseTimeout(CMD_ACK,&resp,4500))
+	{
+		PrintAndLog("Write Command execute timeout");
+		return 0;
+	}
+	uint8_t isOK = resp.arg[0] & 0xff;
+	if (!isOK) {
+		PrintAndLog("Write Block Failed");
+		return 0;
+	}
+	PrintAndLog("Write Block Successful");
+	return 1;
+}
+
+int usage_hf_iclass_writeblock(void) {
+	PrintAndLog("Options:");
+  PrintAndLog("  b <Block> : The block number as 2 hex symbols");
+  PrintAndLog("  d <data>  : Set the Data to write as 16 hex symbols");
+	PrintAndLog("  k <Key>   : Access Key as 16 hex symbols or 1 hex to select key from memory");
+  PrintAndLog("  c         : If 'c' is specified, the key set is assumed to be the credit key\n");
+  PrintAndLog("  e         : If 'e' is specified, elite computations applied to key");
+  PrintAndLog("Samples:");
+	PrintAndLog("  hf iclass writeblk b 0A d AAAAAAAAAAAAAAAA k 001122334455667B");
+	PrintAndLog("  hf iclass writeblk b 1B d AAAAAAAAAAAAAAAA k 001122334455667B c");
+	PrintAndLog("  hf iclass writeblk b 0A d AAAAAAAAAAAAAAAA n 0");
+	return 0;
+}
+
+int CmdHFiClass_WriteBlock(const char *Cmd) {
+	uint8_t blockno=0;
+	uint8_t bldata[8]={0,0,0,0,0,0,0,0};
+	uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+	uint8_t keyNbr = 0;
+	uint8_t dataLen = 0;
+	char tempStr[50] = {0};
+	bool use_credit_key = false;
+	bool elite = false;
+	bool errors = false;
+	uint8_t cmdp = 0;
+	while(param_getchar(Cmd, cmdp) != 0x00)
+	{
+		switch(param_getchar(Cmd, cmdp))
+		{
+		case 'h':
+		case 'H':
+			return usage_hf_iclass_writeblock();
+		case 'b':
+		case 'B':
+			if (param_gethex(Cmd, cmdp+1, &blockno, 2)) {
+				PrintAndLog("Block No must include 2 HEX symbols\n");
+				errors = true;
+			}
+			cmdp += 2;
+			break;
+		case 'c':
+		case 'C':
+			use_credit_key = true;
+			cmdp++;
+			break;
+		case 'd':
+		case 'D':
+			if (param_gethex(Cmd, cmdp+1, bldata, 16))
+			{
+				PrintAndLog("KEY must include 16 HEX symbols\n");
+				errors = true;
+			}
+			cmdp += 2;
+			break;
+		case 'e':
+		case 'E':
+			elite = true;
+			cmdp++;
+			break;
+		case 'k':
+		case 'K':
+			dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+			if (dataLen == 16) { 
+				errors = param_gethex(tempStr, 0, KEY, dataLen);
+			} else if (dataLen == 1) {
+				keyNbr = param_get8(Cmd, cmdp+1);
+				if (keyNbr <= ICLASS_KEYS_MAX) {
+					memcpy(KEY, iClass_Key_Table[keyNbr], 8);
+				} else {
+					PrintAndLog("\nERROR: Credit KeyNbr is invalid\n");
+					errors = true;
+				}
+			} else {
+				PrintAndLog("\nERROR: Credit Key is incorrect length\n");
+				errors = true;
+			}
+			cmdp += 2;
+			break;
+		default:
+			PrintAndLog("Unknown parameter '%c'\n", param_getchar(Cmd, cmdp));
+			errors = true;
+			break;
+		}
+		if(errors) return usage_hf_iclass_writeblock();
+	}
+
+	if (cmdp < 6) return usage_hf_iclass_writeblock();
+	int ans = WriteBlock(blockno, bldata, KEY, use_credit_key, elite, true);
+	ul_switch_off_field();
+	return ans;
+}
+
+int usage_hf_iclass_clone(void) {
+	PrintAndLog("Usage:  hf iclass clone f <tagfile.bin> b <first block> l <last block> k <KEY> e c");
+	PrintAndLog("Options:");
+	PrintAndLog("  f <filename>: specify a filename to clone from");
+	PrintAndLog("  b <Block>   : The first block to clone as 2 hex symbols");
+	PrintAndLog("  l <Last Blk>: Set the Data to write as 16 hex symbols");
+	PrintAndLog("  k <Key>     : Access Key as 16 hex symbols or 1 hex to select key from memory");
+	PrintAndLog("  c           : If 'c' is specified, the key set is assumed to be the credit key\n");
+	PrintAndLog("  e           : If 'e' is specified, elite computations applied to key");
+	PrintAndLog("Samples:");
+	PrintAndLog("  hf iclass clone f iclass_tagdump-121345.bin b 06 l 1A k 1122334455667788 e");
+	PrintAndLog("  hf iclass clone f iclass_tagdump-121345.bin b 05 l 19 k 0");
+	PrintAndLog("  hf iclass clone f iclass_tagdump-121345.bin b 06 l 19 k 0 e");
+	return -1;
+}
+
+int CmdHFiClassCloneTag(const char *Cmd) {
+	char filename[FILE_PATH_SIZE];
+	char tempStr[50]={0};
+	uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+	uint8_t keyNbr = 0;
+	uint8_t fileNameLen = 0;
+	uint8_t startblock = 0;
+	uint8_t endblock = 0;
+	uint8_t dataLen = 0;
+	bool use_credit_key = false;
+	bool elite = false;
+	bool errors = false;
+	uint8_t cmdp = 0;
+	while(param_getchar(Cmd, cmdp) != 0x00)
+	{
+		switch(param_getchar(Cmd, cmdp))
+		{
+		case 'h':
+		case 'H':
+			return usage_hf_iclass_clone();
+		case 'b':
+		case 'B':
+			if (param_gethex(Cmd, cmdp+1, &startblock, 2)) {
+				PrintAndLog("Start Block No must include 2 HEX symbols\n");
+				errors = true;
+			}
+			cmdp += 2;
+			break;
+		case 'c':
+		case 'C':
+			use_credit_key = true;
+			cmdp++;
+			break;
+		case 'e':
+		case 'E':
+			elite = true;
+			cmdp++;
+			break;
+		case 'f':
+		case 'F':
+			fileNameLen = param_getstr(Cmd, cmdp+1, filename); 
+			if (fileNameLen < 1) {
+				PrintAndLog("No filename found after f");
+				errors = true;
+			}
+			cmdp += 2;
+			break;
+		case 'k':
+		case 'K':
+			dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+			if (dataLen == 16) { 
+				errors = param_gethex(tempStr, 0, KEY, dataLen);
+			} else if (dataLen == 1) {
+				keyNbr = param_get8(Cmd, cmdp+1);
+				if (keyNbr <= ICLASS_KEYS_MAX) {
+					memcpy(KEY, iClass_Key_Table[keyNbr], 8);
+				} else {
+					PrintAndLog("\nERROR: Credit KeyNbr is invalid\n");
+					errors = true;
+				}
+			} else {
+				PrintAndLog("\nERROR: Credit Key is incorrect length\n");
+				errors = true;
+			}
+			cmdp += 2;
+			break;
+		case 'l':
+		case 'L':
+			if (param_gethex(Cmd, cmdp+1, &endblock, 2)) {
+				PrintAndLog("Start Block No must include 2 HEX symbols\n");
+				errors = true;
+			}
+			cmdp += 2;
+			break;
+		default:
+			PrintAndLog("Unknown parameter '%c'\n", param_getchar(Cmd, cmdp));
+			errors = true;
+			break;
+		}
+		if(errors) return usage_hf_iclass_clone();
+	}
+
+	if (cmdp < 8) return usage_hf_iclass_clone();
+
+	FILE *f;
+
+	iclass_block_t tag_data[USB_CMD_DATA_SIZE/12];
+
+	if ((endblock-startblock+1)*12 > USB_CMD_DATA_SIZE) {
+		PrintAndLog("Trying to write too many blocks at once.  Max: %d", USB_CMD_DATA_SIZE/8);
+	}
+	// file handling and reading
+	f = fopen(filename,"rb");
+	if(!f) {
+		PrintAndLog("Failed to read from file '%s'", filename);
+		return 1;
+	}
+
+	if (startblock<5) {
+		PrintAndLog("You cannot write key blocks this way. yet... make your start block > 4");
+		return 0;
+	}
+	// now read data from the file from block 6 --- 19
+	// ok we will use this struct [data 8 bytes][MAC 4 bytes] for each block calculate all mac number for each data
+	// then copy to usbcommand->asbytes; the max is 32 - 6 = 24 block 12 bytes each block 288 bytes then we can only accept to clone 21 blocks at the time,
+	// else we have to create a share memory
+	int i;
+	fseek(f,startblock*8,SEEK_SET);
+	fread(tag_data,sizeof(iclass_block_t),endblock - startblock + 1,f);
+
+	uint8_t MAC[4]={0x00,0x00,0x00,0x00};
+	uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+
+	if (!select_and_auth(KEY, MAC, div_key, use_credit_key, elite, true))
+		return 0;
+
+	UsbCommand w = {CMD_ICLASS_CLONE,{startblock,endblock}};
+	uint8_t *ptr;
+	// calculate all mac for every the block we will write
+	for (i = startblock; i <= endblock; i++){
+	    Calc_wb_mac(i,tag_data[i - startblock].d,div_key,MAC);
+	    // usb command d start pointer = d + (i - 6) * 12
+	    // memcpy(pointer,tag_data[i - 6],8) 8 bytes
+	    // memcpy(pointer + 8,mac,sizoof(mac) 4 bytes;
+	    // next one
+	    ptr = w.d.asBytes + (i - startblock) * 12;
+	    memcpy(ptr, &(tag_data[i - startblock].d[0]), 8);
+	    memcpy(ptr + 8,MAC, 4);
+	}
+	uint8_t p[12];
+	for (i = 0; i <= endblock - startblock;i++){
+	    memcpy(p,w.d.asBytes + (i * 12),12);
+	    printf("Block |%02x|",i + startblock);
+	    printf(" %02x%02x%02x%02x%02x%02x%02x%02x |",p[0],p[1],p[2],p[3],p[4],p[5],p[6],p[7]);
+	    printf(" MAC |%02x%02x%02x%02x|\n",p[8],p[9],p[10],p[11]);
+	}
+	UsbCommand resp;
+	SendCommand(&w);
+	if (!WaitForResponseTimeout(CMD_ACK,&resp,4500))
+	{
+		PrintAndLog("Command execute timeout");
+		return 0;
+	}
+	return 1;
+}
+
+static int ReadBlock(uint8_t *KEY, uint8_t blockno, uint8_t keyType, bool elite, bool verbose) {
+	uint8_t MAC[4]={0x00,0x00,0x00,0x00};
+	uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+
+	if (!select_and_auth(KEY, MAC, div_key, (keyType==0x18), elite, verbose))
+		return 0;
+
+	UsbCommand resp;
+	UsbCommand w = {CMD_ICLASS_READBLOCK, {blockno}};
+	clearCommandBuffer();
+	SendCommand(&w);
+	if (!WaitForResponseTimeout(CMD_ACK,&resp,4500))
+	{
+		PrintAndLog("Command execute timeout");
+		return 0;
+	}
+	uint8_t isOK = resp.arg[0] & 0xff;
+	if (!isOK) {
+		PrintAndLog("Read Block Failed");
+		return 0;
+	}
+	//data read is stored in: resp.d.asBytes[0-15]
+	if (verbose) PrintAndLog("Block %02X: %s\n",blockno, sprint_hex(resp.d.asBytes,8));
+	return 1;
+}
+
+int usage_hf_iclass_readblock(void) {
+	PrintAndLog("Usage:  hf iclass readblk b <Block> k <Key> c e\n");
+	PrintAndLog("Options:");
+  PrintAndLog("  b <Block> : The block number as 2 hex symbols");
+	PrintAndLog("  k <Key>   : Access Key as 16 hex symbols or 1 hex to select key from memory");
+  PrintAndLog("  c         : If 'c' is specified, the key set is assumed to be the credit key\n");
+  PrintAndLog("  e         : If 'e' is specified, elite computations applied to key");
+  PrintAndLog("Samples:");
+	PrintAndLog("  hf iclass readblk b 06 k 0011223344556677");
+	PrintAndLog("  hf iclass readblk b 1B k 0011223344556677 c");
+	PrintAndLog("  hf iclass readblk b 0A k 0");
+	return 0;
+}
+
+int CmdHFiClass_ReadBlock(const char *Cmd) {
+	uint8_t blockno=0;
+	uint8_t keyType = 0x88; //debit key
+	uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+	uint8_t keyNbr = 0;
+	uint8_t dataLen = 0;
+	char tempStr[50] = {0};
+	bool elite = false;
+	bool errors = false;
+	uint8_t cmdp = 0;
+	while(param_getchar(Cmd, cmdp) != 0x00)
+	{
+		switch(param_getchar(Cmd, cmdp))
+		{
+		case 'h':
+		case 'H':
+			return usage_hf_iclass_readblock();
+		case 'b':
+		case 'B':
+			if (param_gethex(Cmd, cmdp+1, &blockno, 2)) {
+				PrintAndLog("Block No must include 2 HEX symbols\n");
+				errors = true;
+			}
+			cmdp += 2;
+			break;
+		case 'c':
+		case 'C':
+			keyType = 0x18;
+			cmdp++;
+			break;
+		case 'e':
+		case 'E':
+			elite = true;
+			cmdp++;
+			break;
+		case 'k':
+		case 'K':
+			dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+			if (dataLen == 16) { 
+				errors = param_gethex(tempStr, 0, KEY, dataLen);
+			} else if (dataLen == 1) {
+				keyNbr = param_get8(Cmd, cmdp+1);
+				if (keyNbr <= ICLASS_KEYS_MAX) {
+					memcpy(KEY, iClass_Key_Table[keyNbr], 8);
+				} else {
+					PrintAndLog("\nERROR: Credit KeyNbr is invalid\n");
+					errors = true;
+				}
+			} else {
+				PrintAndLog("\nERROR: Credit Key is incorrect length\n");
+				errors = true;
+			}
+			cmdp += 2;
+			break;
+		default:
+			PrintAndLog("Unknown parameter '%c'\n", param_getchar(Cmd, cmdp));
+			errors = true;
+			break;
+		}
+		if(errors) return usage_hf_iclass_readblock();
+	}
+
+	if (cmdp < 4) return usage_hf_iclass_readblock();
+
+	return ReadBlock(KEY, blockno, keyType, elite, true);
+}
+
+int CmdHFiClass_loclass(const char *Cmd) {
 	char opt = param_getchar(Cmd, 0);
 
 	if (strlen(Cmd)<1 || opt == 'h') {
@@ -683,19 +1211,435 @@ int CmdHFiClass_loclass(const char *Cmd)
 	return 0;
 }
 
+void printIclassDumpContents(uint8_t *iclass_dump, uint8_t startblock, uint8_t endblock, size_t filesize) {
+	uint8_t blockdata[8];
+	uint8_t mem_config;
+	memcpy(&mem_config, iclass_dump + 13,1);
+	uint8_t maxmemcount;
+	uint8_t filemaxblock = filesize / 8;
+	if (mem_config & 0x80)
+		maxmemcount = 255;
+	else
+		maxmemcount = 31;
+	//PrintAndLog	("endblock: %d, filesize: %d, maxmemcount: %d, filemaxblock: %d", endblock,filesize, maxmemcount, filemaxblock);
+
+	if (startblock == 0)
+		startblock = 6;
+	if ((endblock > maxmemcount) || (endblock == 0))
+		endblock = maxmemcount;
+	if (endblock > filemaxblock)
+		endblock = filemaxblock;
+	int i = startblock;
+	int j;
+	while (i <= endblock){
+		printf("Block |%02X| ",i);
+		memcpy(blockdata,iclass_dump + (i * 8),8);
+		for (j = 0;j < 8;j++)
+			printf("%02X ",blockdata[j]);
+		printf("|\n");
+		i++;
+	}
+}
+
+int usage_hf_iclass_readtagfile() {
+	PrintAndLog("Usage: hf iclass readtagfile <filename> [startblock] [endblock]");
+	return 1;
+}
+
+int CmdHFiClassReadTagFile(const char *Cmd) {
+	int startblock = 0;
+	int endblock = 0;
+	char tempnum[5];
+	FILE *f;
+	char filename[FILE_PATH_SIZE];
+	if (param_getstr(Cmd, 0, filename) < 1)
+		return usage_hf_iclass_readtagfile();
+	if (param_getstr(Cmd,1,(char *)&tempnum) < 1)
+		startblock = 0;
+	else
+		sscanf(tempnum,"%d",&startblock);
+
+	if (param_getstr(Cmd,2,(char *)&tempnum) < 1)
+		endblock = 0;
+	else
+		sscanf(tempnum,"%d",&endblock);
+	// file handling and reading
+	f = fopen(filename,"rb");
+	if(!f) {
+		PrintAndLog("Failed to read from file '%s'", filename);
+		return 1;
+	}
+	fseek(f, 0, SEEK_END);
+	long fsize = ftell(f);
+	fseek(f, 0, SEEK_SET);
+
+	uint8_t *dump = malloc(fsize);
+
+
+	size_t bytes_read = fread(dump, 1, fsize, f);
+	fclose(f);
+	uint8_t *csn = dump;
+	printf("CSN   [00] | %02X %02X %02X %02X %02X %02X %02X %02X |\n",csn[0],csn[1],csn[2],csn[3],csn[4],csn[5],csn[6],csn[7]);
+	//    printIclassDumpInfo(dump);
+	printIclassDumpContents(dump,startblock,endblock,bytes_read);
+	free(dump);
+	return 0;
+}
+
+/*
+uint64_t xorcheck(uint64_t sdiv,uint64_t hdiv) {
+	uint64_t new_div = 0x00;
+	new_div ^= sdiv;
+	new_div ^= hdiv;
+	return new_div;
+}
+
+uint64_t hexarray_to_uint64(uint8_t *key) {
+	char temp[17];
+	uint64_t uint_key;
+	for (int i = 0;i < 8;i++)
+		sprintf(&temp[(i *2)],"%02X",key[i]);
+	temp[16] = '\0';
+	if (sscanf(temp,"%016"llX,&uint_key) < 1)
+		return 0;
+	return uint_key;
+}
+*/
+void HFiClassCalcDivKey(uint8_t	*CSN, uint8_t	*KEY, uint8_t *div_key, bool elite){
+	uint8_t keytable[128] = {0};
+	uint8_t key_index[8] = {0};
+	if (elite) {
+		uint8_t key_sel[8] = { 0 };
+		uint8_t key_sel_p[8] = { 0 };
+		hash2(KEY, keytable);
+		hash1(CSN, key_index);
+		for(uint8_t i = 0; i < 8 ; i++)
+			key_sel[i] = keytable[key_index[i]] & 0xFF;
+
+		//Permute from iclass format to standard format
+		permutekey_rev(key_sel, key_sel_p);
+		diversifyKey(CSN, key_sel_p, div_key);	
+	} else {
+		diversifyKey(CSN, KEY, div_key);
+	}		
+}
+
+//when told CSN, oldkey, newkey, if new key is elite (elite), and if old key was elite (oldElite)
+//calculate and return xor_div_key (ready for a key write command)
+//print all div_keys if verbose
+static void HFiClassCalcNewKey(uint8_t *CSN, uint8_t *OLDKEY, uint8_t *NEWKEY, uint8_t *xor_div_key, bool elite, bool oldElite, bool verbose){
+	uint8_t old_div_key[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+	uint8_t new_div_key[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+	//get old div key
+	HFiClassCalcDivKey(CSN, OLDKEY, old_div_key, oldElite);
+	//get new div key
+	HFiClassCalcDivKey(CSN, NEWKEY, new_div_key, elite);
+	
+	for (uint8_t i = 0; i < sizeof(old_div_key); i++){
+		xor_div_key[i] = old_div_key[i] ^ new_div_key[i];
+	}
+	if (verbose) {
+		printf("Old Div Key : %s\n",sprint_hex(old_div_key,8));
+		printf("New Div Key : %s\n",sprint_hex(new_div_key,8));
+		printf("Xor Div Key : %s\n",sprint_hex(xor_div_key,8));		
+	}
+}
+
+int usage_hf_iclass_calc_newkey(void) {
+	PrintAndLog("HELP :  Manage iClass Keys in client memory:\n");
+	PrintAndLog("Usage:  hf iclass calc_newkey o <Old key> n <New key> s [csn] e");
+	PrintAndLog("  Options:");
+	PrintAndLog("  o <oldkey> : *specify a key as 16 hex symbols or a key number as 1 symbol");
+	PrintAndLog("  n <newkey> : *specify a key as 16 hex symbols or a key number as 1 symbol");
+	PrintAndLog("  s <csn>    : specify a card Serial number to diversify the key (if omitted will attempt to read a csn)");
+	PrintAndLog("  e          : specify new key as elite calc");
+	PrintAndLog("  ee         : specify old and new key as elite calc");
+	PrintAndLog("Samples:");
+	PrintAndLog(" e key to e key given csn : hf iclass calcnewkey o 1122334455667788 n 2233445566778899 s deadbeafdeadbeaf ee");
+	PrintAndLog(" std key to e key read csn: hf iclass calcnewkey o 1122334455667788 n 2233445566778899 e");
+	PrintAndLog(" std to std read csn      : hf iclass calcnewkey o 1122334455667788 n 2233445566778899");
+	PrintAndLog("NOTE: * = required\n");
+
+	return 1;
+}
+
+int CmdHFiClassCalcNewKey(const char *Cmd) {
+	uint8_t OLDKEY[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+	uint8_t NEWKEY[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+	uint8_t xor_div_key[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+	uint8_t CSN[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+	uint8_t CCNR[12] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+	uint8_t keyNbr = 0;
+	uint8_t dataLen = 0;
+	char tempStr[50] = {0};
+	bool givenCSN = false;
+	bool oldElite = false;
+	bool elite = false;
+	bool errors = false;
+	uint8_t cmdp = 0;
+	while(param_getchar(Cmd, cmdp) != 0x00)
+	{
+		switch(param_getchar(Cmd, cmdp))
+		{
+		case 'h':
+		case 'H':
+			return usage_hf_iclass_calc_newkey();
+		case 'e':
+		case 'E':
+			dataLen = param_getstr(Cmd, cmdp, tempStr);
+			if (dataLen==2)
+				oldElite = true;
+			elite = true;
+			cmdp++;
+			break;
+		case 'n':
+		case 'N':
+			dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+			if (dataLen == 16) { 
+				errors = param_gethex(tempStr, 0, NEWKEY, dataLen);
+			} else if (dataLen == 1) {
+				keyNbr = param_get8(Cmd, cmdp+1);
+				if (keyNbr <= ICLASS_KEYS_MAX) {
+					memcpy(NEWKEY, iClass_Key_Table[keyNbr], 8);
+				} else {
+					PrintAndLog("\nERROR: NewKey Nbr is invalid\n");
+					errors = true;
+				}
+			} else {
+				PrintAndLog("\nERROR: NewKey is incorrect length\n");
+				errors = true;
+			}
+			cmdp += 2;
+			break;
+		case 'o':
+		case 'O':
+			dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+			if (dataLen == 16) { 
+				errors = param_gethex(tempStr, 0, OLDKEY, dataLen);
+			} else if (dataLen == 1) {
+				keyNbr = param_get8(Cmd, cmdp+1);
+				if (keyNbr <= ICLASS_KEYS_MAX) {
+					memcpy(OLDKEY, iClass_Key_Table[keyNbr], 8);
+				} else {
+					PrintAndLog("\nERROR: Credit KeyNbr is invalid\n");
+					errors = true;
+				}
+			} else {
+				PrintAndLog("\nERROR: Credit Key is incorrect length\n");
+				errors = true;
+			}
+			cmdp += 2;
+			break;
+		case 's':
+		case 'S':
+			givenCSN = true;
+			if (param_gethex(Cmd, cmdp+1, CSN, 16))
+				return usage_hf_iclass_calc_newkey();
+			cmdp += 2;
+			break;
+		default:
+			PrintAndLog("Unknown parameter '%c'\n", param_getchar(Cmd, cmdp));
+			errors = true;
+			break;
+		}
+		if(errors) return usage_hf_iclass_calc_newkey();
+	}
+
+	if (cmdp < 4) return usage_hf_iclass_calc_newkey();
+
+	if (!givenCSN)
+		if (!select_only(CSN, CCNR, false, true))
+			return 0;
+	
+	HFiClassCalcNewKey(CSN, OLDKEY, NEWKEY, xor_div_key, elite, oldElite, true);
+	return 0;
+}
+
+static int loadKeys(char *filename) {
+	FILE *f;
+	f = fopen(filename,"rb");
+	if(!f) {
+		PrintAndLog("Failed to read from file '%s'", filename);
+		return 0;
+	}
+	fseek(f, 0, SEEK_END);
+	long fsize = ftell(f);
+	fseek(f, 0, SEEK_SET);
+
+	uint8_t *dump = malloc(fsize);
+
+	size_t bytes_read = fread(dump, 1, fsize, f);
+	fclose(f);
+	if (bytes_read > ICLASS_KEYS_MAX * 8){
+		PrintAndLog("File is too long to load - bytes: %u", bytes_read);
+		free(dump);
+		return 0;
+	}
+	uint8_t i = 0;
+	for (; i < bytes_read/8; i++){
+		memcpy(iClass_Key_Table[i],dump+(i*8),8);
+	}
+	free(dump);
+	PrintAndLog("%u keys loaded", i);
+	return 1;
+}
+
+static int saveKeys(char *filename) {
+	FILE *f;
+	f = fopen(filename,"wb");
+	if (f == NULL) {
+		printf("error opening file %s\n",filename);
+		return 0;
+	}
+	for (uint8_t i = 0; i < ICLASS_KEYS_MAX; i++){
+		if (fwrite(iClass_Key_Table[i],8,1,f) != 1){
+			PrintAndLog("save key failed to write to file: %s", filename);
+			break;
+		}
+	}
+	fclose(f);
+	return 0;
+}
+
+static int printKeys(void) {
+	PrintAndLog("");
+	for (uint8_t i = 0; i < ICLASS_KEYS_MAX; i++){
+		PrintAndLog("%u: %s",i,sprint_hex(iClass_Key_Table[i],8));
+	}
+	PrintAndLog("");	
+	return 0;
+}
+
+int usage_hf_iclass_managekeys(void) {
+	PrintAndLog("HELP :  Manage iClass Keys in client memory:\n");
+	PrintAndLog("Usage:  hf iclass managekeys n [keynbr] k [key] f [filename] s l p\n");
+	PrintAndLog("  Options:");
+	PrintAndLog("  n <keynbr>  : specify the keyNbr to set in memory");
+	PrintAndLog("  k <key>     : set a key in memory");
+	PrintAndLog("  f <filename>: specify a filename to use with load or save operations");
+	PrintAndLog("  s           : save keys in memory to file specified by filename");
+	PrintAndLog("  l           : load keys to memory from file specified by filename");
+	PrintAndLog("  p           : print keys loaded into memory\n");
+	PrintAndLog("Samples:");
+	PrintAndLog(" set key      : hf iclass managekeys n 0 k 1122334455667788");
+	PrintAndLog(" save key file: hf iclass managekeys f mykeys.bin s");
+	PrintAndLog(" load key file: hf iclass managekeys f mykeys.bin l");
+	PrintAndLog(" print keys   : hf iclass managekeys p\n");
+	return 0;
+}
+
+int CmdHFiClassManageKeys(const char *Cmd) {
+	uint8_t keyNbr = 0;
+	uint8_t dataLen = 0;
+	uint8_t KEY[8] = {0};
+	char filename[FILE_PATH_SIZE];
+	uint8_t fileNameLen = 0;
+	bool errors = false;
+	uint8_t operation = 0;
+	char tempStr[20];
+	uint8_t cmdp = 0;
+
+	while(param_getchar(Cmd, cmdp) != 0x00)
+	{
+		switch(param_getchar(Cmd, cmdp))
+		{
+		case 'h':
+		case 'H':
+			return usage_hf_iclass_managekeys();
+		case 'f':
+		case 'F':
+			fileNameLen = param_getstr(Cmd, cmdp+1, filename); 
+			if (fileNameLen < 1) {
+				PrintAndLog("No filename found after f");
+				errors = true;
+			}
+			cmdp += 2;
+			break;
+		case 'n':
+		case 'N':
+			keyNbr = param_get8(Cmd, cmdp+1);
+			if (keyNbr < 0) {
+				PrintAndLog("Wrong block number");
+				errors = true;
+			}
+			cmdp += 2;
+			break;
+		case 'k':
+		case 'K':
+			operation += 3; //set key 
+			dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+			if (dataLen == 16) { //ul-c or ev1/ntag key length
+				errors = param_gethex(tempStr, 0, KEY, dataLen);
+			} else {
+				PrintAndLog("\nERROR: Key is incorrect length\n");
+				errors = true;
+			}
+			cmdp += 2;
+			break;
+		case 'p':
+		case 'P':
+			operation += 4; //print keys in memory
+			cmdp++;
+			break;
+		case 'l':
+		case 'L':
+			operation += 5; //load keys from file
+			cmdp++;
+			break;
+		case 's':
+		case 'S':
+			operation += 6; //save keys to file
+			cmdp++;
+			break;
+		default:
+			PrintAndLog("Unknown parameter '%c'\n", param_getchar(Cmd, cmdp));
+			errors = true;
+			break;
+		}
+		if(errors) return usage_hf_iclass_managekeys();
+	}
+	if (operation == 0){
+		PrintAndLog("no operation specified (load, save, or print)\n");
+		return usage_hf_iclass_managekeys();
+	}
+	if (operation > 6){
+		PrintAndLog("Too many operations specified\n");
+		return usage_hf_iclass_managekeys();
+	}
+	if (operation > 4 && fileNameLen == 0){
+		PrintAndLog("You must enter a filename when loading or saving\n");
+		return usage_hf_iclass_managekeys();
+	}
+
+	switch (operation){
+		case 3: memcpy(iClass_Key_Table[keyNbr], KEY, 8); return 1;
+		case 4: return printKeys();
+		case 5: return loadKeys(filename);
+		case 6: return saveKeys(filename);
+		break;
+	}
+	return 0;
+}
+
 static command_t CommandTable[] = 
 {
 	{"help",	CmdHelp,			1,	"This help"},
-	{"list",	CmdHFiClassList,	0,	"[Deprecated] List iClass history"},
-	{"snoop",	CmdHFiClassSnoop,	0,	"Eavesdrop iClass communication"},
-	{"sim",	CmdHFiClassSim,		0,	"Simulate iClass tag"},
+	{"calcnewkey",  CmdHFiClassCalcNewKey,      	1,	"[options..] Calc Diversified keys (blocks 3 & 4) to write new keys"},
+	{"clone",       CmdHFiClassCloneTag,        	0,	"[options..] Authenticate and Clone from iClass bin file"},
+	{"decrypt",     CmdHFiClassDecrypt,         	1,	"[f <fname>] Decrypt tagdump" },
+	{"dump",        CmdHFiClassReader_Dump,     	0,	"[options..] Authenticate and Dump iClass tag's AA1"},
+	{"eload",       CmdHFiClassELoad,           	0,	"[f <fname>] (experimental) Load data into iClass emulator memory"},
+	{"encryptblk",  CmdHFiClassEncryptBlk,      	1,	"<BlockData> Encrypt given block data"},
+	{"list",        CmdHFiClassList,            	0,	"            (Deprecated) List iClass history"},
+	{"loclass",     CmdHFiClass_loclass,        	1,	"[options..] Use loclass to perform bruteforce of reader attack dump"},
+	{"managekeys",  CmdHFiClassManageKeys,      	1,	"[options..] Manage the keys to use with iClass"},
+	{"readblk",     CmdHFiClass_ReadBlock,      	0,	"[options..] Authenticate and Read iClass block"},
 	{"reader",CmdHFiClassReader,	0,	"Read an iClass tag"},
-	{"replay",CmdHFiClassReader_Replay,	0,	"Read an iClass tag via Reply Attack"},
-	{"dump",	CmdHFiClassReader_Dump,	0,		"Authenticate and Dump iClass tag"},
-//	{"write",	CmdHFiClass_iso14443A_write,	0,	"Authenticate and Write iClass block"},
-	{"loclass",	CmdHFiClass_loclass,	1,	"Use loclass to perform bruteforce of reader attack dump"},
-	{"eload",   CmdHFiClassELoad,    0,     "[experimental] Load data into iclass emulator memory"},
-	{"decrypt", CmdHFiClassDecrypt,  1,     "Decrypt tagdump" },
+	{"readtagfile", CmdHFiClassReadTagFile,     	1,	"[options..] Display Content from tagfile"},
+	{"replay",      CmdHFiClassReader_Replay,   	0,	"<mac>       Read an iClass tag via Reply Attack"},
+	{"sim",         CmdHFiClassSim,             	0,	"[options..] Simulate iClass tag"},
+	{"snoop",       CmdHFiClassSnoop,           	0,	"            Eavesdrop iClass communication"},
+	{"writeblk",    CmdHFiClass_WriteBlock,     	0,	"[options..] Authenticate and Write iClass block"},
 	{NULL, NULL, 0, NULL}
 };
 
diff --git a/client/cmdhficlass.h b/client/cmdhficlass.h
index 30c6a8a7..9a3adf50 100644
--- a/client/cmdhficlass.h
+++ b/client/cmdhficlass.h
@@ -14,11 +14,26 @@
 
 int CmdHFiClass(const char *Cmd);
 
-int CmdHFiClassSnoop(const char *Cmd);
-int CmdHFiClassSim(const char *Cmd);
+int CmdHFiClassCalcNewKey(const char *Cmd);
+int CmdHFiClassCloneTag(const char *Cmd);
+int CmdHFiClassDecrypt(const char *Cmd);
+int CmdHFiClassEncryptBlk(const char *Cmd);
+int CmdHFiClassELoad(const char *Cmd);
 int CmdHFiClassList(const char *Cmd);
 int HFiClassReader(const char *Cmd, bool loop, bool verbose);
 int CmdHFiClassReader(const char *Cmd);
+int CmdHFiClassReader_Dump(const char *Cmd);
 int CmdHFiClassReader_Replay(const char *Cmd);
-
+int CmdHFiClassReadKeyFile(const char *filename);
+int CmdHFiClassReadTagFile(const char *Cmd);
+int CmdHFiClass_ReadBlock(const char *Cmd);
+int CmdHFiClass_TestMac(const char *Cmd);
+int CmdHFiClassManageKeys(const char *Cmd);
+int CmdHFiClass_loclass(const char *Cmd);
+int CmdHFiClassSnoop(const char *Cmd);
+int CmdHFiClassSim(const char *Cmd);
+int CmdHFiClassWriteKeyFile(const char *Cmd);
+int CmdHFiClass_WriteBlock(const char *Cmd);
+void printIclassDumpContents(uint8_t *iclass_dump, uint8_t startblock, uint8_t endblock, size_t filesize);
+void HFiClassCalcDivKey(uint8_t	*CSN, uint8_t	*KEY, uint8_t *div_key, bool elite);
 #endif
diff --git a/client/cmdhfmf.c b/client/cmdhfmf.c
index 76fd1b7e..ab7d913e 100644
--- a/client/cmdhfmf.c
+++ b/client/cmdhfmf.c
@@ -1230,8 +1230,8 @@ int CmdHF14AMfELoad(const char *Cmd)
 		case '\0': numBlocks = 16*4; break;
 		case '2' : numBlocks = 32*4; break;
 		case '4' : numBlocks = 256; break;
-		case 'U' : // fall through
-		case 'u' : numBlocks = 255; blockWidth = 8; break;
+		case 'U' : // fall through  ,  NTAG 215 has 135blocks a 540 bytes.
+		case 'u' : numBlocks = 135; blockWidth = 8; break;
 		default:  {
 			numBlocks = 16*4;
 			nameParamNo = 0;
@@ -1980,6 +1980,13 @@ int CmdHF14AMfSniff(const char *Cmd){
 	return 0;
 }
 
+//needs nt, ar, at, Data to decrypt
+int CmdDecryptTraceCmds(const char *Cmd){
+	uint8_t data[50];
+	int len = 0;
+	param_gethex_ex(Cmd,3,data,&len);
+	return tryDecryptWord(param_get32ex(Cmd,0,0,16),param_get32ex(Cmd,1,0,16),param_get32ex(Cmd,2,0,16),data,len/2);
+}
 
 static command_t CommandTable[] =
 {
@@ -2008,6 +2015,7 @@ static command_t CommandTable[] =
   {"cgetsc",	CmdHF14AMfCGetSc,		0, "Read sector - Magic Chinese card"},
   {"cload",		CmdHF14AMfCLoad,		0, "Load dump into magic Chinese card"},
   {"csave",		CmdHF14AMfCSave,		0, "Save dump from magic Chinese card into file or emulator"},
+  {"decrypt",   CmdDecryptTraceCmds,    1, "[nt] [ar_enc] [at_enc] [data] - to decrypt snoop or trace"},
   {NULL, NULL, 0, NULL}
 };
 
diff --git a/client/cmdhfmf.h b/client/cmdhfmf.h
index 45ba7cb1..19adbe30 100644
--- a/client/cmdhfmf.h
+++ b/client/cmdhfmf.h
@@ -16,11 +16,11 @@
 #include <string.h>
 #include <ctype.h>
 #include "proxmark3.h"
-#include "../common/iso14443crc.h"
+#include "iso14443crc.h"
 #include "data.h"
 #include "ui.h"
 #include "cmdparser.h"
-#include "../include/common.h"
+#include "common.h"
 #include "util.h"
 #include "mifarehost.h"
 
diff --git a/client/cmdhfmfdes.c b/client/cmdhfmfdes.c
index 516b41bd..fd06791f 100644
--- a/client/cmdhfmfdes.c
+++ b/client/cmdhfmfdes.c
@@ -12,7 +12,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <ctype.h>
-//#include <openssl/des.h>
 #include "loclass/des.h"
 #include "cmdmain.h"
 #include "proxmark3.h"
diff --git a/client/cmdhfmfu.c b/client/cmdhfmfu.c
index aec95e79..5bb9a91e 100644
--- a/client/cmdhfmfu.c
+++ b/client/cmdhfmfu.c
@@ -1924,7 +1924,7 @@ static command_t CommandTable[] =
 	{"dump",	CmdHF14AMfUDump,	0, "Dump Ultralight / Ultralight-C / NTAG tag to binary file"},
 	{"rdbl",	CmdHF14AMfURdBl,	0, "Read block"},
 	{"wrbl",	CmdHF14AMfUWrBl,	0, "Write block"},
-	{"eload",	CmdHF14AMfuELoad,	0, "Load from file emulator dump"},
+	{"eload",	CmdHF14AMfuELoad,	0, "<not implemented> Load from file emulator dump"},
 	{"cauth",	CmdHF14AMfucAuth,	0, "Authentication    - Ultralight C"},
 	{"setpwd",	CmdHF14AMfucSetPwd, 1, "Set 3des password - Ultralight-C"},
 	{"setuid",	CmdHF14AMfucSetUid, 1, "Set UID - MAGIC tags only"},
diff --git a/client/cmdlf.c b/client/cmdlf.c
index db08310a..c67f34a8 100644
--- a/client/cmdlf.c
+++ b/client/cmdlf.c
@@ -85,7 +85,9 @@ int CmdLFCommandRead(const char *Cmd)
 	if(errors) return usage_lf_cmdread();
 	
 	UsbCommand c = {CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K};
+	
 	sscanf(Cmd, "%"lli" %"lli" %"lli" %s %s", &c.arg[0], &c.arg[1], &c.arg[2],(char*)(&c.d.asBytes),(char*)(&dummy+1));
+	
 	// in case they specified 'h'
 	strcpy((char *)&c.d.asBytes + strlen((char *)c.d.asBytes), dummy);
 
@@ -1212,7 +1214,7 @@ static command_t CommandTable[] =
   {"pcf7931",     CmdLFPCF7931,       1, "{ PCF7931 RFIDs... }"},
   {"ti",          CmdLFTI,            1, "{ TI RFIDs... }"},
   {"t55xx",       CmdLFT55XX,         1, "{ T55X7 RFIDs... }"},
-{"viking",      CmdLFViking,        1, "{ Viking RFIDs... }"},
+  {"viking",      CmdLFViking,        1, "{ Viking RFIDs... }"},
   {"config",      CmdLFSetConfig,     0, "Set config for LF sampling, bit/sample, decimation, frequency"},
  
   {"cmdread",     CmdLFCommandRead,   0, "<off period> <'0' period> <'1' period> <command> ['h' 134] \n\t\t-- Modulate LF reader field to send command before read (all periods in microseconds)"},
@@ -1220,9 +1222,9 @@ static command_t CommandTable[] =
   {"indalademod", CmdIndalaDemod,     1, "['224'] -- Demodulate samples for Indala 64 bit UID (option '224' for 224 bit)"},
   {"indalaclone", CmdIndalaClone,     0, "<UID> ['l']-- Clone Indala to T55x7 (tag must be in antenna)(UID in HEX)(option 'l' for 224 UID"},
   {"read",        CmdLFRead,          0, "['s' silent] Read 125/134 kHz LF ID-only tag. Do 'lf read h' for help"},
-  {"search",      CmdLFfind,          1, "[offline] ['u'] Read and Search for valid known tag (in offline mode it you can load first then search) \n\t\t- 'u' to search for unknown tags"},
+  {"search",      CmdLFfind,          1, "[offline] ['u'] Read and Search for valid known tag (in offline mode it you can load first then search) \n\t\t-- 'u' to search for unknown tags"},
   {"sim",         CmdLFSim,           0, "[GAP] -- Simulate LF tag from buffer with optional GAP (in microseconds)"},
-  {"simask",      CmdLFaskSim,        0, "[clock] [invert <1|0>] [manchester/raw <'m'|'r'>] [msg separator 's'] [d <hexdata>] \n\t\t-- Simulate LF ASK tag from demodbuffer or input"},
+  {"simask",      CmdLFaskSim,        0, "[clock] [invert <1|0>] [biphase/manchester/raw <'b'|'m'|'r'>] [msg separator 's'] [d <hexdata>] \n\t\t-- Simulate LF ASK tag from demodbuffer or input"},
   {"simfsk",      CmdLFfskSim,        0, "[c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>] \n\t\t-- Simulate LF FSK tag from demodbuffer or input"},
   {"simpsk",      CmdLFpskSim,        0, "[1|2|3] [c <clock>] [i] [r <carrier>] [d <raw hex to sim>] \n\t\t-- Simulate LF PSK tag from demodbuffer or input"},
   {"simbidir",    CmdLFSimBidir,      0, "Simulate LF tag (with bidirectional data transmission between reader and tag)"},
diff --git a/client/cmdlfpcf7931.c b/client/cmdlfpcf7931.c
index 0d8fb93d..9a40dcd8 100644
--- a/client/cmdlfpcf7931.c
+++ b/client/cmdlfpcf7931.c
@@ -1,13 +1,13 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 2012 Chalk <chalk.secu at gmail.com>
-//
+//               2015 Dake <thomas.cayrou at gmail.com>
+
 // 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
 // the license.
 //-----------------------------------------------------------------------------
 // Low frequency PCF7931 commands
 //-----------------------------------------------------------------------------
-
 #include <stdio.h>
 #include <string.h>
 #include "proxmark3.h"
@@ -21,30 +21,144 @@
 
 static int CmdHelp(const char *Cmd);
 
+struct pcf7931_config configPcf = {{0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF},17500,{0,0}};
+
+int usage_pcf7931_read()
+{
+	PrintAndLog("Usage: lf pcf7931 read [h] ");
+	PrintAndLog("This command tries to read a PCF7931 tag.");
+	PrintAndLog("Options:        ");
+	PrintAndLog("       h             This help");
+	PrintAndLog("Examples:");
+	PrintAndLog("      lf pcf7931 read");
+	return 0;
+}
+
 int CmdLFPCF7931Read(const char *Cmd)
 {
-  UsbCommand c = {CMD_PCF7931_READ};
-  SendCommand(&c);
-  UsbCommand resp;
-  WaitForResponse(CMD_ACK,&resp);
+	uint8_t cmdp = 0;
+	
+	if (param_getchar(Cmd, cmdp) == 'H' ||  param_getchar(Cmd, cmdp) == 'h')
+		return usage_pcf7931_read();
+	
+	UsbCommand c = {CMD_PCF7931_READ};
+	clearCommandBuffer();
+	SendCommand(&c);
+	UsbCommand resp;
+	WaitForResponse(CMD_ACK,&resp);
+	return 0;
+}
+
+int CmdLFPCF7931Config(const char *Cmd)
+{ 
+  int res = 0;
+  // res = sscanf(Cmd, 
+			// "%02x %02x %hu %hu %hu %hu %hu %hhu %hd %hd", 
+			// &configPcf.password[0], 
+			// &configPcf.password[1], 
+			// &configPcf.password[2], 
+			// &configPcf.password[3], 
+			// &configPcf.password[4], 
+			// &configPcf.password[5], 
+			// &configPcf.password[6], 
+			// &configPcf.init_delay, 
+			// &configPcf.offset[0], 
+			// &configPcf.offset[1]);
+
+  if (res >= 7 || res < 1){
+      if(res == 7) configPcf.init_delay = 17500; //default value
+      
+      if(res<=8){
+        configPcf.offset[0] = 0; //default value
+        configPcf.offset[1] = 0; //default value
+      }
+     
+      if(res < 1){
+         PrintAndLog("Usage: <password byte 1 (in hex, lsb first)> <password byte 2  (in hex, lsb first)> [...] <password byte 7  (in hex, lsb first)> <tag initialization delay (in us)> <optional : offset on the low pulses width (in us)> <optional : offset on the low pulses position (in us)>");
+         PrintAndLog("The time offsets could be usefull to correct slew rate generated by the antenna.");
+      }
+
+      PrintAndLog("Current configuration :");
+      PrintAndLog("Password (LSB first on each byte) : %02x %02x %02x %02x %02x %02x %02x", configPcf.password[0], configPcf.password[1], configPcf.password[2], configPcf.password[3], configPcf.password[4], configPcf.password[5], configPcf.password[6]);
+      PrintAndLog("Tag initialization delay : %d us", configPcf.init_delay);
+      PrintAndLog("Offsets : %d us on the low pulses width, %d us on the low pulses positions", configPcf.offset[0], configPcf.offset[1]);
+
+      return 0;
+  }
+
+  //default values
+  configPcf.password[0] = 0xFF;  
+  configPcf.password[1] = 0xFF;  
+  configPcf.password[2] = 0xFF;  
+  configPcf.password[3] = 0xFF;  
+  configPcf.password[4] = 0xFF;  
+  configPcf.password[5] = 0xFF;  
+  configPcf.password[6] = 0xFF;
+
+  configPcf.init_delay = 17500;
+  configPcf.offset[0] = 0; 
+  configPcf.offset[1] = 0; 
+
+  PrintAndLog("Incorrect format");
+  PrintAndLog("Examples of right usage : lf pcf7931 config 11 22 33 44 55 66 77 20000");
+  PrintAndLog("                          lf pcf7931 config FF FF FF FF FF FF FF 17500 -10 30");
   return 0;
 }
 
+int CmdLFPCF7931Write(const char *Cmd)
+{
+  UsbCommand c = {CMD_PCF7931_WRITE};
+
+  int res = 0;
+  res = sscanf(Cmd, "%" SCNu64 " %" SCNu64 " %" SCNu64 , &c.arg[0], &c.arg[1], &c.arg[2]);
+
+  if(res < 1) {
+	PrintAndLog("Please specify the block address in hex");
+	return 1;
+  }
+  if (res == 1){ 
+	PrintAndLog("Please specify the byte address in hex");
+	return 2;
+  }
+  if(res == 2) {
+	PrintAndLog("Please specify the data in hex (1 byte)");
+	return 3;
+  }
+  if(res == 3) {
+
+	memcpy(c.d.asDwords, configPcf.password, 7);
+	
+    c.d.asDwords[7] = (configPcf.offset[0]+128);
+    c.d.asDwords[8] = (configPcf.offset[1]+128);
+    c.d.asDwords[9] = configPcf.init_delay;
+
+	clearCommandBuffer();
+    SendCommand(&c);
+    return 0;
+  }
+
+  PrintAndLog("INCORRECT FORMAT");
+  return 0;
+}
+
+
 static command_t CommandTable[] = 
 {
-  {"help", CmdHelp, 1, "This help"},
-  {"read", CmdLFPCF7931Read, 1, "Read content of a PCF7931 transponder"},
-  {NULL, NULL, 0, NULL}
+	{"help", 	CmdHelp,			1, "This help"},
+	{"read", 	CmdLFPCF7931Read,	1, "Read content of a PCF7931 transponder"},
+	{"write",	CmdLFPCF7931Write,	1, "Write data on a PCF7931 transponder. Usage : lf pcf7931 write <bloc address> <byte address> <data>"},
+	{"config",	CmdLFPCF7931Config, 1, "Configure the password, the tags initialization delay and time offsets (optional)"},
+	{NULL, NULL, 0, NULL}
 };
 
 int CmdLFPCF7931(const char *Cmd)
 {
-  CmdsParse(CommandTable, Cmd);
-  return 0;
+	CmdsParse(CommandTable, Cmd);
+	return 0;
 }
 
 int CmdHelp(const char *Cmd)
 {
-  CmdsHelp(CommandTable);
-  return 0;
+	CmdsHelp(CommandTable);
+	return 0;
 }
diff --git a/client/cmdlfpcf7931.h b/client/cmdlfpcf7931.h
index ed60bc91..78eaff5d 100644
--- a/client/cmdlfpcf7931.h
+++ b/client/cmdlfpcf7931.h
@@ -1,6 +1,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 2012 Chalk <chalk.secu at gmail.com>
-//
+//				 2015 Dake <thomas.cayrou at gmail.com>
+
 // 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
 // the license.
@@ -11,8 +12,18 @@
 #ifndef CMDLFPCF7931_H__
 #define CMDLFPCF7931_H__
 
+struct pcf7931_config{
+	uint8_t password[7];
+	uint16_t init_delay;
+	int16_t offset[2];
+};
+
 int CmdLFPCF7931(const char *Cmd);
 
 int CmdLFPCF7931Read(const char *Cmd);
 
+int CmdLFPCF7931Write(const char *Cmd);
+
+int CmdLFPCF7931Config(const char *Cmd);
+
 #endif
diff --git a/client/cmdlft55xx.c b/client/cmdlft55xx.c
index 5dc5bbee..3611cd4f 100644
--- a/client/cmdlft55xx.c
+++ b/client/cmdlft55xx.c
@@ -37,7 +37,7 @@ int usage_t55xx_config(){
 	PrintAndLog("Options:        ");
 	PrintAndLog("       h                        This help");
 	PrintAndLog("       b <8|16|32|40|50|64|100|128>     Set bitrate");
-	PrintAndLog("       d <FSK|FSK1|FSK1a|FSK2|FSK2a|ASK|PSK1|PSK2|NRZ|BI|BIa>  Set demodulation FSK / ASK / PSK / NZ / Biphase / Biphase A");
+	PrintAndLog("       d <FSK|FSK1|FSK1a|FSK2|FSK2a|ASK|PSK1|PSK2|NRZ|BI|BIa>  Set demodulation FSK / ASK / PSK / NRZ / Biphase / Biphase A");
 	PrintAndLog("       i [1]                            Invert data signal, defaults to normal");
 	PrintAndLog("       o [offset]                       Set offset, where data should start decode in bitstream");
 	PrintAndLog("");
@@ -1059,6 +1059,12 @@ char * GetSelectedModulationStr( uint8_t id){
 	return buf;
 }
 
+void t55x7_create_config_block( int tagtype ){
+	//switch?
+	
+	
+}
+
 /*
 uint32_t PackBits(uint8_t start, uint8_t len, uint8_t* bits){
 	
diff --git a/client/cmdlft55xx.h b/client/cmdlft55xx.h
index 37895fe8..d8e516e8 100644
--- a/client/cmdlft55xx.h
+++ b/client/cmdlft55xx.h
@@ -20,13 +20,14 @@
 // FDXB requires data inversion and BiPhase 57 is simply BipHase 50 inverted, so we can either do it using the modulation scheme or the inversion flag
 // we've done both below to prove that it works either way, and the modulation value for BiPhase 50 in the Atmel data sheet of binary "10001" (17) is a typo,
 // and it should actually be "10000" (16)
-// #define T55X7_FDXB_CONFIG_BLOCK         903F8080      // emulate fdx-b - xtended mode, BiPhase ('57), data rate 32, 4 data blocks
-#define T55X7_FDXB_CONFIG_BLOCK         0x903F0082      // emulate fdx-b - xtended mode, BiPhase ('50), invert data, data rate 32, 4 data blocks
-#define T55X7_HID_26_CONFIG_BLOCK       0x00107060      // hid 26 bit - compat mode, FSK2a, data rate 50, 3 data blocks
-#define T55X7_INDALA_64_CONFIG_BLOCK    0x00081040      // emulate indala 64 bit - compat mode, PSK1, psk carrier FC * 2, data rate 32, maxblock 2
-#define T55X7_INDALA_224_CONFIG_BLOCK   0x000810E0      // emulate indala 224 bit - compat mode, PSK1, psk carrier FC * 2, data rate 32, maxblock 7
-#define T55X7_GUARDPROXII_CONFIG_BLOCK	0x00150060		// bitrate 64pcb, Direct modulation, Biphase, 3 data blocks
-#define T55X7_VIKING_CONFIG_BLOCK		0x00088040		// compat mode, data rate 32, Manchester, 2 data blocks
+// #define T55X7_FDXB_CONFIG_BLOCK         903F8080  // emulate fdx-b - xtended mode, BiPhase ('57), data rate 32, 4 data blocks
+#define T55X7_FDXB_CONFIG_BLOCK         0x903F0082  // emulate fdx-b - xtended mode, BiPhase ('50), invert data, data rate 32, 4 data blocks
+#define T55X7_HID_26_CONFIG_BLOCK       0x00107060  // hid 26 bit - compat mode, FSK2a, data rate 50, 3 data blocks
+#define T55X7_INDALA_64_CONFIG_BLOCK    0x00081040  // emulate indala 64 bit - compat mode, PSK1, psk carrier FC * 2, data rate 32, maxblock 2
+#define T55X7_INDALA_224_CONFIG_BLOCK   0x000810E0  // emulate indala 224 bit - compat mode, PSK1, psk carrier FC * 2, data rate 32, maxblock 7
+#define T55X7_GUARDPROXII_CONFIG_BLOCK	0x00150060	// bitrate 64pcb, Direct modulation, Biphase, 3 data blocks
+#define T55X7_VIKING_CONFIG_BLOCK		0x00088040	// compat mode, data rate 32, Manchester, 2 data blocks
+#define T55X7_NORALYS_CONFIG_BLOCK		0x00088C6A	// compat mode,   (NORALYS - KCP3000)
 #define T55X7_bin 0b0010
 
 
diff --git a/client/default_keys.dic b/client/default_keys.dic
index 520317bf..5c21d6ac 100644
--- a/client/default_keys.dic
+++ b/client/default_keys.dic
@@ -91,4 +91,6 @@ fc0001877bf7,--RKFÖstgötaTrafikenKeyA
 314B49474956,--VIGIK1KeyA
 564c505f4d41,--VIGIK1KeyB
 f4a9ef2afc6d,--BCARD KeyB
-a9f953def0a3,--
\ No newline at end of file
+a9f953def0a3,--
+75ccb59c9bed,-- mystery KeyA Mifare 1k EV1 (S50) Sector 17!
+4b791bea7bcc,-- mystery KeyB Mifare 1k EV1 (S50) Sector 17!
\ No newline at end of file
diff --git a/client/loclass/cipher.c b/client/loclass/cipher.c
index 7d3950b1..6333b4b0 100644
--- a/client/loclass/cipher.c
+++ b/client/loclass/cipher.c
@@ -241,6 +241,27 @@ void doMAC(uint8_t *cc_nr_p, uint8_t *div_key_p, uint8_t mac[4])
 	//free(cc_nr);
     return;
 }
+void doMAC_N(uint8_t *address_data_p, uint8_t address_data_size, uint8_t *div_key_p, uint8_t mac[4])
+{
+	uint8_t *address_data;
+	uint8_t div_key[8];
+	address_data = (uint8_t*) malloc(address_data_size);
+
+	memcpy(address_data, address_data_p, address_data_size);
+	memcpy(div_key, div_key_p, 8);
+
+	reverse_arraybytes(address_data, address_data_size);
+	BitstreamIn bitstream = {address_data, address_data_size * 8, 0};
+	uint8_t dest []= {0,0,0,0,0,0,0,0};
+	BitstreamOut out = { dest, sizeof(dest)*8, 0 };
+	MAC(div_key, bitstream, out);
+	//The output MAC must also be reversed
+	reverse_arraybytes(dest, sizeof(dest));
+	memcpy(mac, dest, 4);
+	free(address_data);
+	return;
+}
+
 #ifndef ON_DEVICE
 int testMAC()
 {
diff --git a/client/loclass/cipher.h b/client/loclass/cipher.h
index bdea9432..7afdb524 100644
--- a/client/loclass/cipher.h
+++ b/client/loclass/cipher.h
@@ -42,6 +42,8 @@
 #include <stdint.h>
 
 void doMAC(uint8_t *cc_nr_p, uint8_t *div_key_p, uint8_t mac[4]);
+void doMAC_N(uint8_t *address_data_p,uint8_t address_data_size, uint8_t *div_key_p, uint8_t mac[4]);
+
 #ifndef ON_DEVICE
 int testMAC();
 #endif
diff --git a/client/lualibs/commands.lua b/client/lualibs/commands.lua
index ae0568f8..97b40d98 100644
--- a/client/lualibs/commands.lua
+++ b/client/lualibs/commands.lua
@@ -91,11 +91,17 @@ local _commands = {
 	CMD_EPA_PACE_COLLECT_NONCE =                                         0x038A,
 	CMD_EPA_PACE_REPLAY =                                                0x038B,
 
+	CMD_ICLASS_READCHECK =                                               0x038F,
+	CMD_ICLASS_CLONE =                                                   0x0390,
+	CMD_ICLASS_DUMP =                                                    0x0391,
 	CMD_SNOOP_ICLASS =                                                   0x0392,
 	CMD_SIMULATE_TAG_ICLASS =                                            0x0393,
 	CMD_READER_ICLASS =                                                  0x0394,
 	CMD_READER_ICLASS_REPLAY =											 0x0395,
-	CMD_ICLASS_ISO14443A_WRITE =										 0x0397,
+	CMD_ICLASS_READBLOCK =                                               0x0396,
+	CMD_ICLASS_WRITEBLOCK =                                              0x0397,
+	CMD_ICLASS_EML_MEMSET =                                              0x0398,
+	CMD_ICLASS_AUTHENTICATION =                                          0x0399,
 
 	--// For measurements of the antenna tuning
 	CMD_MEASURE_ANTENNA_TUNING =                                         0x0400,
diff --git a/client/lualibs/mf_default_keys.lua b/client/lualibs/mf_default_keys.lua
index 804d4a84..006d2e6f 100644
--- a/client/lualibs/mf_default_keys.lua
+++ b/client/lualibs/mf_default_keys.lua
@@ -181,6 +181,12 @@ local _keys = {
 	 --[[	 
 	 --]]
 	 'a9f953def0a3',
+	 
+	 --[[
+	 mystery Key A and B for Mifare 1k EV1 (S50) Sector 17!
+	 --]]
+	'75ccb59c9bed',
+	'4b791bea7bcc',
 }
 
 ---
diff --git a/client/mifarehost.c b/client/mifarehost.c
index d3f4a4cd..830b61cd 100644
--- a/client/mifarehost.c
+++ b/client/mifarehost.c
@@ -630,3 +630,23 @@ int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) {
 
 	return 0;
 }
+
+int tryDecryptWord(uint32_t nt, uint32_t ar_enc, uint32_t at_enc, uint8_t *data, int len){
+	/*
+	uint32_t nt;      // tag challenge
+	uint32_t ar_enc;  // encrypted reader response
+	uint32_t at_enc;  // encrypted tag response
+	*/
+	if (traceCrypto1) {
+		crypto1_destroy(traceCrypto1);
+	}
+	ks2 = ar_enc ^ prng_successor(nt, 64);
+	ks3 = at_enc ^ prng_successor(nt, 96);
+	traceCrypto1 = lfsr_recovery64(ks2, ks3);
+
+	mf_crypto1_decrypt(traceCrypto1, data, len, 0);
+
+	PrintAndLog("Decrypted data: [%s]", sprint_hex(data,len) );
+	crypto1_destroy(traceCrypto1);
+	return 0;
+}
diff --git a/client/mifarehost.h b/client/mifarehost.h
index e2903ff8..49991d66 100644
--- a/client/mifarehost.h
+++ b/client/mifarehost.h
@@ -68,3 +68,4 @@ int isBlockEmpty(int blockN);
 int isBlockTrailer(int blockN);
 int loadTraceCard(uint8_t *tuid);
 int saveTraceCard(void);
+int tryDecryptWord(uint32_t nt, uint32_t ar_enc, uint32_t at_enc, uint8_t *data, int len);
diff --git a/client/nonce2key/nonce2key.c b/client/nonce2key/nonce2key.c
index c013c85d..b7ab7c32 100644
--- a/client/nonce2key/nonce2key.c
+++ b/client/nonce2key/nonce2key.c
@@ -288,4 +288,4 @@ int tryMfk64(uint64_t myuid, uint8_t *data, uint8_t *outputkey ){
 	crypto1_destroy(revstate);
 	crypto1_destroy(pcs);
 	return 0;
-}
+}
\ No newline at end of file
diff --git a/client/util.c b/client/util.c
index 797a9392..4a3b7476 100644
--- a/client/util.c
+++ b/client/util.c
@@ -333,7 +333,28 @@ int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)
 
 	return 0;
 }
+int param_gethex_ex(const char *line, int paramnum, uint8_t * data, int *hexcnt)
+{
+	int bg, en, temp, i;
 
+	//if (hexcnt % 2)
+	//	return 1;
+	
+	if (param_getptr(line, &bg, &en, paramnum)) return 1;
+
+	*hexcnt = en - bg + 1;
+	if (*hexcnt % 2) //error if not complete hex bytes
+		return 1;
+
+	for(i = 0; i < *hexcnt; i += 2) {
+		if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) )	return 1;
+		
+		sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
+		data[i / 2] = temp & 0xff;
+	}	
+
+	return 0;
+}
 int param_getstr(const char *line, int paramnum, char * str)
 {
 	int bg, en;
diff --git a/client/util.h b/client/util.h
index 8a749ccb..a9ae8313 100644
--- a/client/util.h
+++ b/client/util.h
@@ -55,6 +55,7 @@ uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base);
 uint8_t param_getdec(const char *line, int paramnum, uint8_t *destination);
 uint8_t param_isdec(const char *line, int paramnum);
 int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt);
+int param_gethex_ex(const char *line, int paramnum, uint8_t * data, int *hexcnt);
 int param_getstr(const char *line, int paramnum, char * str);
 
  int hextobinarray( char *target,  char *source);
diff --git a/common/protocols.c b/common/protocols.c
index aa80491b..0a523da3 100644
--- a/common/protocols.c
+++ b/common/protocols.c
@@ -11,13 +11,13 @@
 
 
 typedef struct {
-	uint8_t app_limit;
-	uint8_t otp[2];
-	uint8_t block_writelock;
-	uint8_t chip_config;
-	uint8_t mem_config;
-	uint8_t eas;
-	uint8_t fuses;
+	uint8_t app_limit;      //[8]
+	uint8_t otp[2];         //[9-10]
+	uint8_t block_writelock;//[11]
+	uint8_t chip_config;    //[12]
+	uint8_t mem_config;     //[13]
+	uint8_t eas;            //[14]
+	uint8_t fuses;          //[15]
 }picopass_conf_block;
 
 
@@ -74,24 +74,54 @@ void fuse_config(const picopass_hdr *hdr)
 	if( isset( fuses, FUSE_RA)) prnt("	RA: Read access enabled");
 	else prnt("	RA: Read access not enabled");
 }
-void mem_config(const picopass_hdr *hdr)
+
+void getMemConfig(uint8_t mem_cfg, uint8_t chip_cfg, uint8_t *max_blk, uint8_t *app_areas, uint8_t *kb) {
+	// mem-bit 5, mem-bit 7, chip-bit 4: defines chip type
+	if(isset(chip_cfg, 0x10) && notset(mem_cfg, 0x80) && notset(mem_cfg, 0x20)) {
+		*kb = 2;
+		*app_areas = 2;
+		*max_blk = 31;
+	} else if(isset(chip_cfg, 0x10) && isset(mem_cfg, 0x80) && notset(mem_cfg, 0x20)) {
+		*kb = 16;
+		*app_areas = 2;
+		*max_blk = 255; //16kb
+	} else if(notset(chip_cfg, 0x10) && notset(mem_cfg, 0x80) && notset(mem_cfg, 0x20)) {
+		*kb = 16;
+		*app_areas = 16;
+		*max_blk = 255; //16kb
+	} else if(isset(chip_cfg, 0x10) && isset(mem_cfg, 0x80) && isset(mem_cfg, 0x20)) {
+		*kb = 32;
+		*app_areas = 3;
+		*max_blk = 255; //16kb
+	} else if(notset(chip_cfg, 0x10) && notset(mem_cfg, 0x80) && isset(mem_cfg, 0x20)) {
+		*kb = 32;
+		*app_areas = 17;
+		*max_blk = 255; //16kb
+	} else {
+		*kb = 32;
+		*app_areas = 2;
+		*max_blk = 255;
+	}
+}
+
+void mem_app_config(const picopass_hdr *hdr)
 {
 	uint8_t mem = hdr->conf.mem_config;
-	if( isset (mem, 0x80)) prnt("	Mem: 16KBits (255 * 8 bytes)");
-	else prnt("	Mem: 2 KBits ( 32 * 8 bytes)");
-
-}
-void applimit_config(const picopass_hdr *hdr)
-{
+	uint8_t chip = hdr->conf.chip_config;
 	uint8_t applimit = hdr->conf.app_limit;
-	prnt("	AA1: blocks 6-%d", applimit);
-	prnt("	AA2: blocks %d-", (applimit+1));
+	if (applimit < 6) applimit = 26;
+	uint8_t kb = 2;
+	uint8_t app_areas = 2;
+	uint8_t max_blk = 31;
+	getMemConfig(mem, chip, &max_blk, &app_areas, &kb);
+	prnt("  Mem: %u KBits/%u App Areas (%u * 8 bytes) [%02X]", kb, app_areas, max_blk, mem);
+	prnt("	AA1: blocks 06-%02X", applimit);
+	prnt("	AA2: blocks %02X-%02X", applimit+1, max_blk);
 }
 void print_picopass_info(const picopass_hdr *hdr)
 {
 	fuse_config(hdr);
-	mem_config(hdr);
-	applimit_config(hdr);
+	mem_app_config(hdr);
 }
 void printIclassDumpInfo(uint8_t* iclass_dump)
 {
diff --git a/common/protocols.h b/common/protocols.h
index 2de52b4d..e676cbfe 100644
--- a/common/protocols.h
+++ b/common/protocols.h
@@ -148,6 +148,10 @@ ISO 7816-4 Basic interindustry commands. For command APDU's.
 #define MIFARE_CMD_RESTORE      0xC2
 #define MIFARE_CMD_TRANSFER     0xB0
 
+#define MIFARE_EV1_PERSONAL_UID 0x40
+#define MIFARE_EV1_SETMODE		0x43
+
+
 #define MIFARE_ULC_WRITE        0xA2
 //#define MIFARE_ULC__COMP_WRITE  0xA0
 #define MIFARE_ULC_AUTH_1       0x1A
@@ -162,6 +166,8 @@ ISO 7816-4 Basic interindustry commands. For command APDU's.
 #define MIFARE_ULEV1_CHECKTEAR	0x3E
 #define MIFARE_ULEV1_VCSL		0x4B
 
+
+
 /**
 06 00 = INITIATE
 0E xx = SELECT ID (xx = Chip-ID)
@@ -259,5 +265,6 @@ ISO 7816-4 Basic interindustry commands. For command APDU's.
 //	6x xx = ERROR
 	
 void printIclassDumpInfo(uint8_t* iclass_dump);
+void getMemConfig(uint8_t mem_cfg, uint8_t chip_cfg, uint8_t *max_blk, uint8_t *app_areas, uint8_t *kb);
 
 #endif // PROTOCOLS_H
diff --git a/include/usb_cmd.h b/include/usb_cmd.h
index 96e5e5a2..4a6704c6 100644
--- a/include/usb_cmd.h
+++ b/include/usb_cmd.h
@@ -87,6 +87,7 @@ typedef struct{
 #define CMD_T55XX_WRITE_BLOCK                                             0x0215
 #define CMD_T55XX_READ_TRACE                                              0x0216
 #define CMD_PCF7931_READ                                                  0x0217
+#define CMD_PCF7931_WRITE                                                 0x0223
 #define CMD_EM4X_READ_WORD                                                0x0218
 #define CMD_EM4X_WRITE_WORD                                               0x0219
 #define CMD_IO_DEMOD_FSK                                                  0x021A
@@ -133,12 +134,17 @@ typedef struct{
 #define CMD_EPA_PACE_COLLECT_NONCE                                        0x038A
 #define CMD_EPA_PACE_REPLAY                                               0x038B
 
+#define CMD_ICLASS_READCHECK                                              0x038F
+#define CMD_ICLASS_CLONE                                                  0x0390
+#define CMD_ICLASS_DUMP                                                   0x0391
 #define CMD_SNOOP_ICLASS                                                  0x0392
 #define CMD_SIMULATE_TAG_ICLASS                                           0x0393
 #define CMD_READER_ICLASS                                                 0x0394
 #define CMD_READER_ICLASS_REPLAY                                          0x0395
-#define CMD_ICLASS_ISO14443A_WRITE										  0x0397
+#define CMD_ICLASS_READBLOCK                                              0x0396
+#define CMD_ICLASS_WRITEBLOCK                                             0x0397
 #define CMD_ICLASS_EML_MEMSET                                             0x0398
+#define CMD_ICLASS_AUTHENTICATION                                         0x0399
 
 // For measurements of the antenna tuning
 #define CMD_MEASURE_ANTENNA_TUNING                                        0x0400
@@ -211,6 +217,7 @@ typedef struct{
 #define FLAG_ICLASS_READER_CONF		0x08
 #define FLAG_ICLASS_READER_AA		0x10
 #define FLAG_ICLASS_READER_ONE_TRY      0x20
+#define FLAG_ICLASS_READER_CEDITKEY     0x40