[proxmark3-svn] / client / cmdlfem4x.c

//-----------------------------------------------------------------------------
// Copyright (C) 2010 iZsh <izsh at fail0verflow.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 EM4x commands
//-----------------------------------------------------------------------------

#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include "proxmark3.h"
#include "ui.h"
#include "util.h"
#include "graph.h"
#include "cmdparser.h"
#include "cmddata.h"
#include "cmdlf.h"
#include "cmdlfem4x.h"
#include "lfdemod.h"
char *global_em410xId;

static int CmdHelp(const char *Cmd);

int CmdEMdemodASK(const char *Cmd)
{
	char cmdp = param_getchar(Cmd, 0);
	int findone = (cmdp == '1') ? 1 : 0;
	UsbCommand c={CMD_EM410X_DEMOD};
	c.arg[0]=findone;
	SendCommand(&c);
	return 0;
}

/* Read the ID of an EM410x tag.
 * Format:
 *   1111 1111 1           <-- standard non-repeatable header
 *   XXXX [row parity bit] <-- 10 rows of 5 bits for our 40 bit tag ID
 *   ....
 *   CCCC                  <-- each bit here is parity for the 10 bits above in corresponding column
 *   0                     <-- stop bit, end of tag
 */
int CmdEM410xRead(const char *Cmd)
{
	uint32_t hi=0;
	uint64_t lo=0;

	if(!AskEm410xDemod("", &hi, &lo, false)) return 0;
	PrintAndLog("EM410x pattern found: ");
	printEM410x(hi, lo);
	if (hi){
		PrintAndLog ("EM410x XL pattern found");
		return 0;
	}
	char id[12] = {0x00};
	sprintf(id, "%010llx",lo);
	
	global_em410xId = id;
	return 1;
}

// emulate an EM410X tag
int CmdEM410xSim(const char *Cmd)
{
	int i, n, j, binary[4], parity[4];

	char cmdp = param_getchar(Cmd, 0);
	uint8_t uid[5] = {0x00};

	if (cmdp == 'h' || cmdp == 'H') {
		PrintAndLog("Usage:  lf em4x 410xsim <UID>");
		PrintAndLog("");
		PrintAndLog("     sample: lf em4x 410xsim 0F0368568B");
		return 0;
	}

	if (param_gethex(Cmd, 0, uid, 10)) {
		PrintAndLog("UID must include 10 HEX symbols");
		return 0;
	}
	
	PrintAndLog("Starting simulating UID %02X%02X%02X%02X%02X", uid[0],uid[1],uid[2],uid[3],uid[4]);
	PrintAndLog("Press pm3-button to about simulation");

	/* clock is 64 in EM410x tags */
	int clock = 64;

	/* clear our graph */
	ClearGraph(0);

		/* write 9 start bits */
		for (i = 0; i < 9; i++)
			AppendGraph(0, clock, 1);

		/* for each hex char */
		parity[0] = parity[1] = parity[2] = parity[3] = 0;
		for (i = 0; i < 10; i++)
		{
			/* read each hex char */
			sscanf(&Cmd[i], "%1x", &n);
			for (j = 3; j >= 0; j--, n/= 2)
				binary[j] = n % 2;

			/* append each bit */
			AppendGraph(0, clock, binary[0]);
			AppendGraph(0, clock, binary[1]);
			AppendGraph(0, clock, binary[2]);
			AppendGraph(0, clock, binary[3]);

			/* append parity bit */
			AppendGraph(0, clock, binary[0] ^ binary[1] ^ binary[2] ^ binary[3]);

			/* keep track of column parity */
			parity[0] ^= binary[0];
			parity[1] ^= binary[1];
			parity[2] ^= binary[2];
			parity[3] ^= binary[3];
		}

		/* parity columns */
		AppendGraph(0, clock, parity[0]);
		AppendGraph(0, clock, parity[1]);
		AppendGraph(0, clock, parity[2]);
		AppendGraph(0, clock, parity[3]);

		/* stop bit */
	AppendGraph(1, clock, 0);
 
	CmdLFSim("0"); //240 start_gap.
	return 0;
}

/* Function is equivalent of lf read + data samples + em410xread
 * looped until an EM410x tag is detected 
 * 
 * Why is CmdSamples("16000")?
 *  TBD: Auto-grow sample size based on detected sample rate.  IE: If the
 *       rate gets lower, then grow the number of samples
 *  Changed by martin, 4000 x 4 = 16000, 
 *  see http://www.proxmark.org/forum/viewtopic.php?pid=7235#p7235
*/
int CmdEM410xWatch(const char *Cmd)
{
	do {
		if (ukbhit()) {
			printf("\naborted via keyboard!\n");
			break;
		}
		
		CmdLFRead("s");
		getSamples("8201",true); //capture enough to get 2 complete preambles (4096*2+9)	
	} while (!CmdEM410xRead(""));

	return 0;
}

//currently only supports manchester modulations
int CmdEM410xWatchnSpoof(const char *Cmd)
{
	CmdEM410xWatch(Cmd);
	PrintAndLog("# Replaying captured ID: %s",global_em410xId);
	CmdLFaskSim("");
	return 0;
}

int CmdEM410xWrite(const char *Cmd)
{
	uint64_t id = 0xFFFFFFFFFFFFFFFF; // invalid id value
	int card = 0xFF; // invalid card value
	unsigned int clock = 0; // invalid clock value

	sscanf(Cmd, "%" PRIx64 " %d %d", &id, &card, &clock);

	// Check ID
	if (id == 0xFFFFFFFFFFFFFFFF) {
		PrintAndLog("Error! ID is required.\n");
		return 0;
	}
	if (id >= 0x10000000000) {
		PrintAndLog("Error! Given EM410x ID is longer than 40 bits.\n");
		return 0;
	}

	// Check Card
	if (card == 0xFF) {
		PrintAndLog("Error! Card type required.\n");
		return 0;
	}
	if (card < 0) {
		PrintAndLog("Error! Bad card type selected.\n");
		return 0;
	}

	// Check Clock
	if (card == 1)
	{
		// Default: 64
		if (clock == 0)
			clock = 64;

		// Allowed clock rates: 16, 32 and 64
		if ((clock != 16) && (clock != 32) && (clock != 64)) {
			PrintAndLog("Error! Clock rate %d not valid. Supported clock rates are 16, 32 and 64.\n", clock);
			return 0;
		}
	}
	else if (clock != 0)
	{
		PrintAndLog("Error! Clock rate is only supported on T55x7 tags.\n");
		return 0;
	}

	if (card == 1) {
		PrintAndLog("Writing %s tag with UID 0x%010" PRIx64 " (clock rate: %d)", "T55x7", id, clock);
		// NOTE: We really should pass the clock in as a separate argument, but to
		//   provide for backwards-compatibility for older firmware, and to avoid
		//   having to add another argument to CMD_EM410X_WRITE_TAG, we just store
		//   the clock rate in bits 8-15 of the card value
		card = (card & 0xFF) | (((uint64_t)clock << 8) & 0xFF00);
	}
	else if (card == 0)
		PrintAndLog("Writing %s tag with UID 0x%010" PRIx64, "T5555", id, clock);
	else {
		PrintAndLog("Error! Bad card type selected.\n");
		return 0;
	}

	UsbCommand c = {CMD_EM410X_WRITE_TAG, {card, (uint32_t)(id >> 32), (uint32_t)id}};
	SendCommand(&c);

	return 0;
}

bool EM_EndParityTest(uint8_t *BitStream, size_t size, uint8_t rows, uint8_t cols, uint8_t pType)
{
	if (rows*cols>size) return false;
	uint8_t colP=0;
	//assume last col is a parity and do not test
	for (uint8_t colNum = 0; colNum < cols-1; colNum++) {
		for (uint8_t rowNum = 0; rowNum < rows; rowNum++) {
			colP ^= BitStream[(rowNum*cols)+colNum];
		}
		if (colP != pType) return false;
	}
	return true;
}

bool EM_ByteParityTest(uint8_t *BitStream, size_t size, uint8_t rows, uint8_t cols, uint8_t pType)
{
	if (rows*cols>size) return false;
	uint8_t rowP=0;
	//assume last row is a parity row and do not test
	for (uint8_t rowNum = 0; rowNum < rows-1; rowNum++) {
		for (uint8_t colNum = 0; colNum < cols; colNum++) {
			rowP ^= BitStream[(rowNum*cols)+colNum];
		}
		if (rowP != pType) return false;
	}
	return true;
}

uint32_t OutputEM4x50_Block(uint8_t *BitStream, size_t size, bool verbose, bool pTest)
{
	if (size<45) return 0;
	uint32_t code = bytebits_to_byte(BitStream,8);
	code = code<<8 | bytebits_to_byte(BitStream+9,8);
	code = code<<8 | bytebits_to_byte(BitStream+18,8);
	code = code<<8 | bytebits_to_byte(BitStream+27,8);
	if (verbose || g_debugMode){
		for (uint8_t i = 0; i<5; i++){
			if (i == 4) PrintAndLog(""); //parity byte spacer
			PrintAndLog("%d%d%d%d%d%d%d%d %d -> 0x%02x",
			    BitStream[i*9],
			    BitStream[i*9+1],
			    BitStream[i*9+2],
			    BitStream[i*9+3],
			    BitStream[i*9+4],
			    BitStream[i*9+5],
			    BitStream[i*9+6],
			    BitStream[i*9+7],
			    BitStream[i*9+8],
			    bytebits_to_byte(BitStream+i*9,8)
			);
		}
		if (pTest)
			PrintAndLog("Parity Passed");
		else
			PrintAndLog("Parity Failed");
	}
	return code;
}
/* Read the transmitted data of an EM4x50 tag
 * Format:
 *
 *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 *  CCCCCCCC                         <- column parity bits
 *  0                                <- stop bit
 *  LW                               <- Listen Window
 *
 * This pattern repeats for every block of data being transmitted.
 * Transmission starts with two Listen Windows (LW - a modulated
 * pattern of 320 cycles each (32/32/128/64/64)).
 *
 * Note that this data may or may not be the UID. It is whatever data
 * is stored in the blocks defined in the control word First and Last
 * Word Read values. UID is stored in block 32.
 */
 //completed by Marshmellow
int EM4x50Read(const char *Cmd, bool verbose)
{
	uint8_t fndClk[] = {8,16,32,40,50,64,128};
	int clk = 0; 
	int invert = 0;
	int tol = 0;
	int i, j, startblock, skip, block, start, end, low, high, minClk;
	bool complete = false;
	int tmpbuff[MAX_GRAPH_TRACE_LEN / 64];
	uint32_t Code[6];
	char tmp[6];
	char tmp2[20];
	int phaseoff;
	high = low = 0;
	memset(tmpbuff, 0, MAX_GRAPH_TRACE_LEN / 64);

	// get user entry if any
	sscanf(Cmd, "%i %i", &clk, &invert);
	
	// save GraphBuffer - to restore it later	
	save_restoreGB(1);

	// first get high and low values
	for (i = 0; i < GraphTraceLen; i++) {
		if (GraphBuffer[i] > high)
			high = GraphBuffer[i];
		else if (GraphBuffer[i] < low)
			low = GraphBuffer[i];
	}

	i = 0;
	j = 0;
	minClk = 255;
	// get to first full low to prime loop and skip incomplete first pulse
	while ((GraphBuffer[i] < high) && (i < GraphTraceLen))
		++i;
	while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
		++i;
	skip = i;

	// populate tmpbuff buffer with pulse lengths
	while (i < GraphTraceLen) {
		// measure from low to low
		while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
			++i;
		start= i;
		while ((GraphBuffer[i] < high) && (i < GraphTraceLen))
			++i;
		while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
			++i;
		if (j>=(MAX_GRAPH_TRACE_LEN/64)) {
			break;
		}
		tmpbuff[j++]= i - start;
		if (i-start < minClk && i < GraphTraceLen) {
			minClk = i - start;
		}
	}
	// set clock
	if (!clk) {
		for (uint8_t clkCnt = 0; clkCnt<7; clkCnt++) {
			tol = fndClk[clkCnt]/8;
			if (minClk >= fndClk[clkCnt]-tol && minClk <= fndClk[clkCnt]+1) { 
				clk=fndClk[clkCnt];
				break;
			}
		}
		if (!clk) return 0;
	} else tol = clk/8;

	// look for data start - should be 2 pairs of LW (pulses of clk*3,clk*2)
	start = -1;
	for (i= 0; i < j - 4 ; ++i) {
		skip += tmpbuff[i];
		if (tmpbuff[i] >= clk*3-tol && tmpbuff[i] <= clk*3+tol)  //3 clocks
			if (tmpbuff[i+1] >= clk*2-tol && tmpbuff[i+1] <= clk*2+tol)  //2 clocks
				if (tmpbuff[i+2] >= clk*3-tol && tmpbuff[i+2] <= clk*3+tol) //3 clocks
					if (tmpbuff[i+3] >= clk-tol)  //1.5 to 2 clocks - depends on bit following
					{
						start= i + 4;
						break;
					}
	}
	startblock = i + 4;

	// skip over the remainder of LW
	skip += tmpbuff[i+1] + tmpbuff[i+2] + clk;
	if (tmpbuff[i+3]>clk) 
		phaseoff = tmpbuff[i+3]-clk;
	else
		phaseoff = 0;
	// now do it again to find the end
	end = skip;
	for (i += 3; i < j - 4 ; ++i) {
		end += tmpbuff[i];
		if (tmpbuff[i] >= clk*3-tol && tmpbuff[i] <= clk*3+tol)  //3 clocks
			if (tmpbuff[i+1] >= clk*2-tol && tmpbuff[i+1] <= clk*2+tol)  //2 clocks
				if (tmpbuff[i+2] >= clk*3-tol && tmpbuff[i+2] <= clk*3+tol) //3 clocks
					if (tmpbuff[i+3] >= clk-tol)  //1.5 to 2 clocks - depends on bit following
					{
						complete= true;
						break;
					}
	}
	end = i;
	// report back
	if (verbose || g_debugMode) {
		if (start >= 0) {
			PrintAndLog("\nNote: one block = 50 bits (32 data, 12 parity, 6 marker)");
		}	else {
			PrintAndLog("No data found!, clock tried:%d",clk);
			PrintAndLog("Try again with more samples.");
			PrintAndLog("  or after a 'data askedge' command to clean up the read");
			return 0;
		}
	} else if (start < 0) return 0;
	start = skip;
	snprintf(tmp2, sizeof(tmp2),"%d %d 1000 %d", clk, invert, clk*47);
	// get rid of leading crap 
	snprintf(tmp, sizeof(tmp), "%i", skip);
	CmdLtrim(tmp);
	bool pTest;
	bool AllPTest = true;
	// now work through remaining buffer printing out data blocks
	block = 0;
	i = startblock;
	while (block < 6) {
		if (verbose || g_debugMode) PrintAndLog("\nBlock %i:", block);
		skip = phaseoff;
		
		// look for LW before start of next block
		for ( ; i < j - 4 ; ++i) {
			skip += tmpbuff[i];
			if (tmpbuff[i] >= clk*3-tol && tmpbuff[i] <= clk*3+tol)
				if (tmpbuff[i+1] >= clk-tol)
					break;
		}
		if (i >= j-4) break; //next LW not found
		skip += clk;
		if (tmpbuff[i+1]>clk)
			phaseoff = tmpbuff[i+1]-clk;
		else
			phaseoff = 0;
		i += 2;
		if (ASKDemod(tmp2, false, false, 1) < 1) {
			save_restoreGB(0);
			return 0;
		}
		//set DemodBufferLen to just one block
		DemodBufferLen = skip/clk;
		//test parities
		pTest = EM_ByteParityTest(DemodBuffer,DemodBufferLen,5,9,0);	
		pTest &= EM_EndParityTest(DemodBuffer,DemodBufferLen,5,9,0);
		AllPTest &= pTest;
		//get output
		Code[block] = OutputEM4x50_Block(DemodBuffer,DemodBufferLen,verbose, pTest);
		if (g_debugMode) PrintAndLog("\nskipping %d samples, bits:%d", skip, skip/clk);
		//skip to start of next block
		snprintf(tmp,sizeof(tmp),"%i",skip);
		CmdLtrim(tmp);
		block++;
		if (i >= end) break; //in case chip doesn't output 6 blocks
	}
	//print full code:
	if (verbose || g_debugMode || AllPTest){
		if (!complete) {
			PrintAndLog("*** Warning!");
			PrintAndLog("Partial data - no end found!");
			PrintAndLog("Try again with more samples.");
		}
		PrintAndLog("Found data at sample: %i - using clock: %i", start, clk);    
		end = block;
		for (block=0; block < end; block++){
			PrintAndLog("Block %d: %08x",block,Code[block]);
		}
		if (AllPTest) {
			PrintAndLog("Parities Passed");
		} else {
			PrintAndLog("Parities Failed");
			PrintAndLog("Try cleaning the read samples with 'data askedge'");
		}
	}

	//restore GraphBuffer
	save_restoreGB(0);
	return (int)AllPTest;
}

int CmdEM4x50Read(const char *Cmd)
{
	return EM4x50Read(Cmd, true);
}

int CmdReadWord(const char *Cmd)
{
	int Word = -1; //default to invalid word
	UsbCommand c;
	
	sscanf(Cmd, "%d", &Word);
	
	if ( (Word > 15) | (Word < 0) ) {
		PrintAndLog("Word must be between 0 and 15");
		return 1;
	}
	
	PrintAndLog("Reading word %d", Word);
	
	c.cmd = CMD_EM4X_READ_WORD;
	c.d.asBytes[0] = 0x0; //Normal mode
	c.arg[0] = 0;
	c.arg[1] = Word;
	c.arg[2] = 0;
	SendCommand(&c);
	return 0;
}

int CmdReadWordPWD(const char *Cmd)
{
	int Word = -1; //default to invalid word
	int Password = 0xFFFFFFFF; //default to blank password
	UsbCommand c;
	
	sscanf(Cmd, "%d %x", &Word, &Password);
	
	if ( (Word > 15) | (Word < 0) ) {
		PrintAndLog("Word must be between 0 and 15");
		return 1;
	}
	
	PrintAndLog("Reading word %d with password %08X", Word, Password);
	
	c.cmd = CMD_EM4X_READ_WORD;
	c.d.asBytes[0] = 0x1; //Password mode
	c.arg[0] = 0;
	c.arg[1] = Word;
	c.arg[2] = Password;
	SendCommand(&c);
	return 0;
}

int CmdWriteWord(const char *Cmd)
{
	int Word = 16; //default to invalid block
	int Data = 0xFFFFFFFF; //default to blank data
	UsbCommand c;
	
	sscanf(Cmd, "%x %d", &Data, &Word);
	
	if (Word > 15) {
		PrintAndLog("Word must be between 0 and 15");
		return 1;
	}
	
	PrintAndLog("Writing word %d with data %08X", Word, Data);
	
	c.cmd = CMD_EM4X_WRITE_WORD;
	c.d.asBytes[0] = 0x0; //Normal mode
	c.arg[0] = Data;
	c.arg[1] = Word;
	c.arg[2] = 0;
	SendCommand(&c);
	return 0;
}

int CmdWriteWordPWD(const char *Cmd)
{
	int Word = 16; //default to invalid word
	int Data = 0xFFFFFFFF; //default to blank data
	int Password = 0xFFFFFFFF; //default to blank password
	UsbCommand c;
	
	sscanf(Cmd, "%x %d %x", &Data, &Word, &Password);
	
	if (Word > 15) {
		PrintAndLog("Word must be between 0 and 15");
		return 1;
	}
	
	PrintAndLog("Writing word %d with data %08X and password %08X", Word, Data, Password);
	
	c.cmd = CMD_EM4X_WRITE_WORD;
	c.d.asBytes[0] = 0x1; //Password mode
	c.arg[0] = Data;
	c.arg[1] = Word;
	c.arg[2] = Password;
	SendCommand(&c);
	return 0;
}

static command_t CommandTable[] =
{
	{"help", CmdHelp, 1, "This help"},
	{"em410xdemod", CmdEMdemodASK, 0, "[findone] -- Extract ID from EM410x tag (option 0 for continuous loop, 1 for only 1 tag)"},  
	{"em410xread", CmdEM410xRead, 1, "[clock rate] -- Extract ID from EM410x tag in GraphBuffer"},
	{"em410xsim", CmdEM410xSim, 0, "<UID> -- Simulate EM410x tag"},
	{"em410xwatch", CmdEM410xWatch, 0, "['h'] -- Watches for EM410x 125/134 kHz tags (option 'h' for 134)"},
	{"em410xspoof", CmdEM410xWatchnSpoof, 0, "['h'] --- Watches for EM410x 125/134 kHz tags, and replays them. (option 'h' for 134)" },
	{"em410xwrite", CmdEM410xWrite, 0, "<UID> <'0' T5555> <'1' T55x7> [clock rate] -- Write EM410x UID to T5555(Q5) or T55x7 tag, optionally setting clock rate"},
	{"em4x50read", CmdEM4x50Read, 1, "Extract data from EM4x50 tag"},
	{"readword", CmdReadWord, 1, "<Word> -- Read EM4xxx word data"},
	{"readwordPWD", CmdReadWordPWD, 1, "<Word> <Password> -- Read EM4xxx word data in password mode"},
	{"writeword", CmdWriteWord, 1, "<Data> <Word> -- Write EM4xxx word data"},
	{"writewordPWD", CmdWriteWordPWD, 1, "<Data> <Word> <Password> -- Write EM4xxx word data in password mode"},
	{NULL, NULL, 0, NULL}
};

int CmdLFEM4X(const char *Cmd)
{
	CmdsParse(CommandTable, Cmd);
	return 0;
}

int CmdHelp(const char *Cmd)
{
	CmdsHelp(CommandTable);
	return 0;
}
Commit	Line	Data
a553f267	1	//-----------------------------------------------------------------------------
	2	// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
	3	//
	4	// This code is licensed to you under the terms of the GNU GPL, version 2 or,
	5	// at your option, any later version. See the LICENSE.txt file for the text of
	6	// the license.
	7	//-----------------------------------------------------------------------------
	8	// Low frequency EM4x commands
	9	//-----------------------------------------------------------------------------
	10
7fe9b0b7	11	#include <stdio.h>
9e13f875	12	#include <string.h>
ec564290	13	#include <inttypes.h>
902cb3c0	14	#include "proxmark3.h"
7fe9b0b7	15	#include "ui.h"
3fe4ff4f	16	#include "util.h"
7fe9b0b7	17	#include "graph.h"
	18	#include "cmdparser.h"
	19	#include "cmddata.h"
	20	#include "cmdlf.h"
	21	#include "cmdlfem4x.h"
23f0a7d8	22	#include "lfdemod.h"
c3bfb9c7	23	char *global_em410xId;
7fe9b0b7	24
	25	static int CmdHelp(const char *Cmd);
	26
66707a3b	27	int CmdEMdemodASK(const char *Cmd)
66707a3b	28	{
3fe4ff4f	29	char cmdp = param_getchar(Cmd, 0);
cc15a118	30	int findone = (cmdp == '1') ? 1 : 0;
23f0a7d8	31	UsbCommand c={CMD_EM410X_DEMOD};
	32	c.arg[0]=findone;
	33	SendCommand(&c);
	34	return 0;
66707a3b	35	}
66707a3b	36
7fe9b0b7	37	/* Read the ID of an EM410x tag.
	38	* Format:
	39	* 1111 1111 1 <-- standard non-repeatable header
	40	* XXXX [row parity bit] <-- 10 rows of 5 bits for our 40 bit tag ID
	41	* ....
	42	* CCCC <-- each bit here is parity for the 10 bits above in corresponding column
	43	* 0 <-- stop bit, end of tag
	44	*/
	45	int CmdEM410xRead(const char *Cmd)
	46	{
23f0a7d8	47	uint32_t hi=0;
	48	uint64_t lo=0;
	49
fef74fdc	50	if(!AskEm410xDemod("", &hi, &lo, false)) return 0;
23f0a7d8	51	PrintAndLog("EM410x pattern found: ");
	52	printEM410x(hi, lo);
	53	if (hi){
	54	PrintAndLog ("EM410x XL pattern found");
	55	return 0;
	56	}
	57	char id[12] = {0x00};
	58	sprintf(id, "%010llx",lo);
	59
	60	global_em410xId = id;
	61	return 1;
7fe9b0b7	62	}
7fe9b0b7	63
13d77ef9	64	// emulate an EM410X tag
7fe9b0b7	65	int CmdEM410xSim(const char *Cmd)
7fe9b0b7	66	{
3fe4ff4f	67	int i, n, j, binary[4], parity[4];
	68
	69	char cmdp = param_getchar(Cmd, 0);
	70	uint8_t uid[5] = {0x00};
	71
	72	if (cmdp == 'h' \|\| cmdp == 'H') {
	73	PrintAndLog("Usage: lf em4x 410xsim <UID>");
	74	PrintAndLog("");
	75	PrintAndLog(" sample: lf em4x 410xsim 0F0368568B");
	76	return 0;
	77	}
	78
	79	if (param_gethex(Cmd, 0, uid, 10)) {
	80	PrintAndLog("UID must include 10 HEX symbols");
	81	return 0;
	82	}
	83
	84	PrintAndLog("Starting simulating UID %02X%02X%02X%02X%02X", uid[0],uid[1],uid[2],uid[3],uid[4]);
	85	PrintAndLog("Press pm3-button to about simulation");
7fe9b0b7	86
23f0a7d8	87	/* clock is 64 in EM410x tags */
	88	int clock = 64;
	89
	90	/* clear our graph */
	91	ClearGraph(0);
	92
	93	/* write 9 start bits */
	94	for (i = 0; i < 9; i++)
	95	AppendGraph(0, clock, 1);
	96
	97	/* for each hex char */
	98	parity[0] = parity[1] = parity[2] = parity[3] = 0;
	99	for (i = 0; i < 10; i++)
	100	{
	101	/* read each hex char */
	102	sscanf(&Cmd[i], "%1x", &n);
	103	for (j = 3; j >= 0; j--, n/= 2)
	104	binary[j] = n % 2;
	105
	106	/* append each bit */
	107	AppendGraph(0, clock, binary[0]);
	108	AppendGraph(0, clock, binary[1]);
	109	AppendGraph(0, clock, binary[2]);
	110	AppendGraph(0, clock, binary[3]);
	111
	112	/* append parity bit */
	113	AppendGraph(0, clock, binary[0] ^ binary[1] ^ binary[2] ^ binary[3]);
	114
	115	/* keep track of column parity */
	116	parity[0] ^= binary[0];
	117	parity[1] ^= binary[1];
	118	parity[2] ^= binary[2];
	119	parity[3] ^= binary[3];
	120	}
	121
	122	/* parity columns */
	123	AppendGraph(0, clock, parity[0]);
	124	AppendGraph(0, clock, parity[1]);
	125	AppendGraph(0, clock, parity[2]);
	126	AppendGraph(0, clock, parity[3]);
	127
	128	/* stop bit */
	129	AppendGraph(1, clock, 0);
3fe4ff4f	130
23f0a7d8	131	CmdLFSim("0"); //240 start_gap.
23f0a7d8	132	return 0;
7fe9b0b7	133	}
7fe9b0b7	134
3fe4ff4f	135	/* Function is equivalent of lf read + data samples + em410xread
	136	* looped until an EM410x tag is detected
	137	*
	138	* Why is CmdSamples("16000")?
	139	* TBD: Auto-grow sample size based on detected sample rate. IE: If the
	140	* rate gets lower, then grow the number of samples
	141	* Changed by martin, 4000 x 4 = 16000,
	142	* see http://www.proxmark.org/forum/viewtopic.php?pid=7235#p7235
3fe4ff4f	143	*/
7fe9b0b7	144	int CmdEM410xWatch(const char *Cmd)
7fe9b0b7	145	{
3fe4ff4f	146	do {
	147	if (ukbhit()) {
	148	printf("\naborted via keyboard!\n");
	149	break;
	150	}
	151
1fbf8956	152	CmdLFRead("s");
2767fc02	153	getSamples("8201",true); //capture enough to get 2 complete preambles (4096*2+9)
13d77ef9	154	} while (!CmdEM410xRead(""));
13d77ef9	155
3fe4ff4f	156	return 0;
7fe9b0b7	157	}
7fe9b0b7	158
23f0a7d8	159	//currently only supports manchester modulations
c3bfb9c7	160	int CmdEM410xWatchnSpoof(const char *Cmd)
	161	{
	162	CmdEM410xWatch(Cmd);
1fbf8956	163	PrintAndLog("# Replaying captured ID: %s",global_em410xId);
	164	CmdLFaskSim("");
	165	return 0;
c3bfb9c7	166	}
c3bfb9c7	167
6e984446	168	int CmdEM410xWrite(const char *Cmd)
	169	{
	170	uint64_t id = 0xFFFFFFFFFFFFFFFF; // invalid id value
	171	int card = 0xFF; // invalid card value
	172	unsigned int clock = 0; // invalid clock value
	173
	174	sscanf(Cmd, "%" PRIx64 " %d %d", &id, &card, &clock);
	175
	176	// Check ID
	177	if (id == 0xFFFFFFFFFFFFFFFF) {
	178	PrintAndLog("Error! ID is required.\n");
	179	return 0;
	180	}
	181	if (id >= 0x10000000000) {
	182	PrintAndLog("Error! Given EM410x ID is longer than 40 bits.\n");
	183	return 0;
	184	}
	185
	186	// Check Card
	187	if (card == 0xFF) {
	188	PrintAndLog("Error! Card type required.\n");
	189	return 0;
	190	}
	191	if (card < 0) {
	192	PrintAndLog("Error! Bad card type selected.\n");
	193	return 0;
	194	}
	195
	196	// Check Clock
	197	if (card == 1)
	198	{
	199	// Default: 64
	200	if (clock == 0)
	201	clock = 64;
	202
	203	// Allowed clock rates: 16, 32 and 64
	204	if ((clock != 16) && (clock != 32) && (clock != 64)) {
	205	PrintAndLog("Error! Clock rate %d not valid. Supported clock rates are 16, 32 and 64.\n", clock);
	206	return 0;
	207	}
	208	}
	209	else if (clock != 0)
	210	{
	211	PrintAndLog("Error! Clock rate is only supported on T55x7 tags.\n");
	212	return 0;
	213	}
	214
	215	if (card == 1) {
	216	PrintAndLog("Writing %s tag with UID 0x%010" PRIx64 " (clock rate: %d)", "T55x7", id, clock);
	217	// NOTE: We really should pass the clock in as a separate argument, but to
	218	// provide for backwards-compatibility for older firmware, and to avoid
	219	// having to add another argument to CMD_EM410X_WRITE_TAG, we just store
	220	// the clock rate in bits 8-15 of the card value
	221	card = (card & 0xFF) \| (((uint64_t)clock << 8) & 0xFF00);
	222	}
	223	else if (card == 0)
	224	PrintAndLog("Writing %s tag with UID 0x%010" PRIx64, "T5555", id, clock);
	225	else {
	226	PrintAndLog("Error! Bad card type selected.\n");
	227	return 0;
	228	}
	229
	230	UsbCommand c = {CMD_EM410X_WRITE_TAG, {card, (uint32_t)(id >> 32), (uint32_t)id}};
	231	SendCommand(&c);
232
233	return 0;
234	}
235
23f0a7d8	236	bool EM_EndParityTest(uint8_t *BitStream, size_t size, uint8_t rows, uint8_t cols, uint8_t pType)
	237	{
	238	if (rows*cols>size) return false;
	239	uint8_t colP=0;
cc15a118	240	//assume last col is a parity and do not test
23f0a7d8	241	for (uint8_t colNum = 0; colNum < cols-1; colNum++) {
	242	for (uint8_t rowNum = 0; rowNum < rows; rowNum++) {
	243	colP ^= BitStream[(rowNum*cols)+colNum];
	244	}
	245	if (colP != pType) return false;
	246	}
	247	return true;
	248	}
	249
	250	bool EM_ByteParityTest(uint8_t *BitStream, size_t size, uint8_t rows, uint8_t cols, uint8_t pType)
	251	{
	252	if (rows*cols>size) return false;
	253	uint8_t rowP=0;
	254	//assume last row is a parity row and do not test
	255	for (uint8_t rowNum = 0; rowNum < rows-1; rowNum++) {
	256	for (uint8_t colNum = 0; colNum < cols; colNum++) {
	257	rowP ^= BitStream[(rowNum*cols)+colNum];
	258	}
	259	if (rowP != pType) return false;
	260	}
	261	return true;
	262	}
	263
	264	uint32_t OutputEM4x50_Block(uint8_t *BitStream, size_t size, bool verbose, bool pTest)
	265	{
	266	if (size<45) return 0;
	267	uint32_t code = bytebits_to_byte(BitStream,8);
	268	code = code<<8 \| bytebits_to_byte(BitStream+9,8);
	269	code = code<<8 \| bytebits_to_byte(BitStream+18,8);
	270	code = code<<8 \| bytebits_to_byte(BitStream+27,8);
	271	if (verbose \|\| g_debugMode){
	272	for (uint8_t i = 0; i<5; i++){
cc15a118	273	if (i == 4) PrintAndLog(""); //parity byte spacer
23f0a7d8	274	PrintAndLog("%d%d%d%d%d%d%d%d %d -> 0x%02x",
	275	BitStream[i*9],
	276	BitStream[i*9+1],
	277	BitStream[i*9+2],
	278	BitStream[i*9+3],
	279	BitStream[i*9+4],
	280	BitStream[i*9+5],
	281	BitStream[i*9+6],
	282	BitStream[i*9+7],
	283	BitStream[i*9+8],
	284	bytebits_to_byte(BitStream+i*9,8)
	285	);
	286	}
	287	if (pTest)
	288	PrintAndLog("Parity Passed");
	289	else
	290	PrintAndLog("Parity Failed");
	291	}
23f0a7d8	292	return code;
23f0a7d8	293	}
7fe9b0b7	294	/* Read the transmitted data of an EM4x50 tag
	295	* Format:
	296	*
	297	* XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
	298	* XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
	299	* XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
	300	* XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
	301	* CCCCCCCC <- column parity bits
	302	* 0 <- stop bit
	303	* LW <- Listen Window
	304	*
	305	* This pattern repeats for every block of data being transmitted.
	306	* Transmission starts with two Listen Windows (LW - a modulated
	307	* pattern of 320 cycles each (32/32/128/64/64)).
	308	*
	309	* Note that this data may or may not be the UID. It is whatever data
	310	* is stored in the blocks defined in the control word First and Last
	311	* Word Read values. UID is stored in block 32.
	312	*/
cc15a118	313	//completed by Marshmellow
23f0a7d8	314	int EM4x50Read(const char *Cmd, bool verbose)
23f0a7d8	315	{
cc15a118	316	uint8_t fndClk[] = {8,16,32,40,50,64,128};
23f0a7d8	317	int clk = 0;
23f0a7d8	318	int invert = 0;
23f0a7d8	319	int tol = 0;
23f0a7d8	320	int i, j, startblock, skip, block, start, end, low, high, minClk;
cc15a118	321	bool complete = false;
23f0a7d8	322	int tmpbuff[MAX_GRAPH_TRACE_LEN / 64];
23f0a7d8	323	uint32_t Code[6];
23f0a7d8	324	char tmp[6];
23f0a7d8	325	char tmp2[20];
49bbc60a	326	int phaseoff;
cc15a118	327	high = low = 0;
23f0a7d8	328	memset(tmpbuff, 0, MAX_GRAPH_TRACE_LEN / 64);
cc15a118	329
	330	// get user entry if any
	331	sscanf(Cmd, "%i %i", &clk, &invert);
	332
	333	// save GraphBuffer - to restore it later
	334	save_restoreGB(1);
	335
23f0a7d8	336	// first get high and low values
cc15a118	337	for (i = 0; i < GraphTraceLen; i++) {
23f0a7d8	338	if (GraphBuffer[i] > high)
	339	high = GraphBuffer[i];
	340	else if (GraphBuffer[i] < low)
	341	low = GraphBuffer[i];
	342	}
	343
cc15a118	344	i = 0;
	345	j = 0;
	346	minClk = 255;
	347	// get to first full low to prime loop and skip incomplete first pulse
	348	while ((GraphBuffer[i] < high) && (i < GraphTraceLen))
	349	++i;
	350	while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
	351	++i;
	352	skip = i;
	353
	354	// populate tmpbuff buffer with pulse lengths
	355	while (i < GraphTraceLen) {
23f0a7d8	356	// measure from low to low
cc15a118	357	while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
23f0a7d8	358	++i;
23f0a7d8	359	start= i;
cc15a118	360	while ((GraphBuffer[i] < high) && (i < GraphTraceLen))
23f0a7d8	361	++i;
cc15a118	362	while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
23f0a7d8	363	++i;
	364	if (j>=(MAX_GRAPH_TRACE_LEN/64)) {
	365	break;
	366	}
	367	tmpbuff[j++]= i - start;
cc15a118	368	if (i-start < minClk && i < GraphTraceLen) {
	369	minClk = i - start;
	370	}
23f0a7d8	371	}
23f0a7d8	372	// set clock
cc15a118	373	if (!clk) {
23f0a7d8	374	for (uint8_t clkCnt = 0; clkCnt<7; clkCnt++) {
23f0a7d8	375	tol = fndClk[clkCnt]/8;
cc15a118	376	if (minClk >= fndClk[clkCnt]-tol && minClk <= fndClk[clkCnt]+1) {
23f0a7d8	377	clk=fndClk[clkCnt];
	378	break;
	379	}
	380	}
cc15a118	381	if (!clk) return 0;
6e984446	382	} else tol = clk/8;
23f0a7d8	383
23f0a7d8	384	// look for data start - should be 2 pairs of LW (pulses of clk3,clk2)
cc15a118	385	start = -1;
cc15a118	386	for (i= 0; i < j - 4 ; ++i) {
23f0a7d8	387	skip += tmpbuff[i];
cc15a118	388	if (tmpbuff[i] >= clk3-tol && tmpbuff[i] <= clk3+tol) //3 clocks
	389	if (tmpbuff[i+1] >= clk2-tol && tmpbuff[i+1] <= clk2+tol) //2 clocks
	390	if (tmpbuff[i+2] >= clk3-tol && tmpbuff[i+2] <= clk3+tol) //3 clocks
	391	if (tmpbuff[i+3] >= clk-tol) //1.5 to 2 clocks - depends on bit following
23f0a7d8	392	{
	393	start= i + 4;
	394	break;
	395	}
	396	}
cc15a118	397	startblock = i + 4;
23f0a7d8	398
23f0a7d8	399	// skip over the remainder of LW
49bbc60a	400	skip += tmpbuff[i+1] + tmpbuff[i+2] + clk;
	401	if (tmpbuff[i+3]>clk)
	402	phaseoff = tmpbuff[i+3]-clk;
	403	else
	404	phaseoff = 0;
23f0a7d8	405	// now do it again to find the end
23f0a7d8	406	end = skip;
cc15a118	407	for (i += 3; i < j - 4 ; ++i) {
23f0a7d8	408	end += tmpbuff[i];
cc15a118	409	if (tmpbuff[i] >= clk3-tol && tmpbuff[i] <= clk3+tol) //3 clocks
	410	if (tmpbuff[i+1] >= clk2-tol && tmpbuff[i+1] <= clk2+tol) //2 clocks
	411	if (tmpbuff[i+2] >= clk3-tol && tmpbuff[i+2] <= clk3+tol) //3 clocks
	412	if (tmpbuff[i+3] >= clk-tol) //1.5 to 2 clocks - depends on bit following
23f0a7d8	413	{
	414	complete= true;
	415	break;
	416	}
	417	}
	418	end = i;
	419	// report back
	420	if (verbose \|\| g_debugMode) {
	421	if (start >= 0) {
cc15a118	422	PrintAndLog("\nNote: one block = 50 bits (32 data, 12 parity, 6 marker)");
23f0a7d8	423	} else {
cc15a118	424	PrintAndLog("No data found!, clock tried:%d",clk);
23f0a7d8	425	PrintAndLog("Try again with more samples.");
cc15a118	426	PrintAndLog(" or after a 'data askedge' command to clean up the read");
23f0a7d8	427	return 0;
23f0a7d8	428	}
23f0a7d8	429	} else if (start < 0) return 0;
cc15a118	430	start = skip;
23f0a7d8	431	snprintf(tmp2, sizeof(tmp2),"%d %d 1000 %d", clk, invert, clk*47);
23f0a7d8	432	// get rid of leading crap
cc15a118	433	snprintf(tmp, sizeof(tmp), "%i", skip);
23f0a7d8	434	CmdLtrim(tmp);
23f0a7d8	435	bool pTest;
cc15a118	436	bool AllPTest = true;
23f0a7d8	437	// now work through remaining buffer printing out data blocks
	438	block = 0;
	439	i = startblock;
cc15a118	440	while (block < 6) {
23f0a7d8	441	if (verbose \|\| g_debugMode) PrintAndLog("\nBlock %i:", block);
	442	skip = phaseoff;
	443
	444	// look for LW before start of next block
cc15a118	445	for ( ; i < j - 4 ; ++i) {
23f0a7d8	446	skip += tmpbuff[i];
	447	if (tmpbuff[i] >= clk3-tol && tmpbuff[i] <= clk3+tol)
	448	if (tmpbuff[i+1] >= clk-tol)
	449	break;
	450	}
49bbc60a	451	if (i >= j-4) break; //next LW not found
23f0a7d8	452	skip += clk;
49bbc60a	453	if (tmpbuff[i+1]>clk)
	454	phaseoff = tmpbuff[i+1]-clk;
	455	else
	456	phaseoff = 0;
23f0a7d8	457	i += 2;
fef74fdc	458	if (ASKDemod(tmp2, false, false, 1) < 1) {
cc15a118	459	save_restoreGB(0);
	460	return 0;
	461	}
23f0a7d8	462	//set DemodBufferLen to just one block
	463	DemodBufferLen = skip/clk;
	464	//test parities
	465	pTest = EM_ByteParityTest(DemodBuffer,DemodBufferLen,5,9,0);
	466	pTest &= EM_EndParityTest(DemodBuffer,DemodBufferLen,5,9,0);
	467	AllPTest &= pTest;
	468	//get output
cc15a118	469	Code[block] = OutputEM4x50_Block(DemodBuffer,DemodBufferLen,verbose, pTest);
cc15a118	470	if (g_debugMode) PrintAndLog("\nskipping %d samples, bits:%d", skip, skip/clk);
23f0a7d8	471	//skip to start of next block
	472	snprintf(tmp,sizeof(tmp),"%i",skip);
	473	CmdLtrim(tmp);
	474	block++;
cc15a118	475	if (i >= end) break; //in case chip doesn't output 6 blocks
23f0a7d8	476	}
	477	//print full code:
	478	if (verbose \|\| g_debugMode \|\| AllPTest){
49bbc60a	479	if (!complete) {
	480	PrintAndLog("*** Warning!");
	481	PrintAndLog("Partial data - no end found!");
	482	PrintAndLog("Try again with more samples.");
	483	}
cc15a118	484	PrintAndLog("Found data at sample: %i - using clock: %i", start, clk);
	485	end = block;
	486	for (block=0; block < end; block++){
23f0a7d8	487	PrintAndLog("Block %d: %08x",block,Code[block]);
23f0a7d8	488	}
49bbc60a	489	if (AllPTest) {
23f0a7d8	490	PrintAndLog("Parities Passed");
49bbc60a	491	} else {
23f0a7d8	492	PrintAndLog("Parities Failed");
cc15a118	493	PrintAndLog("Try cleaning the read samples with 'data askedge'");
49bbc60a	494	}
23f0a7d8	495	}
	496
	497	//restore GraphBuffer
	498	save_restoreGB(0);
	499	return (int)AllPTest;
	500	}
	501
7fe9b0b7	502	int CmdEM4x50Read(const char *Cmd)
7fe9b0b7	503	{
23f0a7d8	504	return EM4x50Read(Cmd, true);
7fe9b0b7	505	}
7fe9b0b7	506
54a942b0	507	int CmdReadWord(const char *Cmd)
54a942b0	508	{
b915fda3	509	int Word = -1; //default to invalid word
23f0a7d8	510	UsbCommand c;
	511
	512	sscanf(Cmd, "%d", &Word);
	513
b915fda3	514	if ( (Word > 15) \| (Word < 0) ) {
23f0a7d8	515	PrintAndLog("Word must be between 0 and 15");
	516	return 1;
	517	}
	518
	519	PrintAndLog("Reading word %d", Word);
	520
	521	c.cmd = CMD_EM4X_READ_WORD;
	522	c.d.asBytes[0] = 0x0; //Normal mode
	523	c.arg[0] = 0;
	524	c.arg[1] = Word;
	525	c.arg[2] = 0;
	526	SendCommand(&c);
	527	return 0;
54a942b0	528	}
	529
	530	int CmdReadWordPWD(const char *Cmd)
	531	{
b915fda3	532	int Word = -1; //default to invalid word
23f0a7d8	533	int Password = 0xFFFFFFFF; //default to blank password
	534	UsbCommand c;
	535
	536	sscanf(Cmd, "%d %x", &Word, &Password);
	537
b915fda3	538	if ( (Word > 15) \| (Word < 0) ) {
23f0a7d8	539	PrintAndLog("Word must be between 0 and 15");
	540	return 1;
	541	}
	542
	543	PrintAndLog("Reading word %d with password %08X", Word, Password);
	544
	545	c.cmd = CMD_EM4X_READ_WORD;
	546	c.d.asBytes[0] = 0x1; //Password mode
	547	c.arg[0] = 0;
	548	c.arg[1] = Word;
	549	c.arg[2] = Password;
	550	SendCommand(&c);
	551	return 0;
54a942b0	552	}
	553
	554	int CmdWriteWord(const char *Cmd)
	555	{
23f0a7d8	556	int Word = 16; //default to invalid block
	557	int Data = 0xFFFFFFFF; //default to blank data
	558	UsbCommand c;
	559
	560	sscanf(Cmd, "%x %d", &Data, &Word);
	561
	562	if (Word > 15) {
	563	PrintAndLog("Word must be between 0 and 15");
	564	return 1;
	565	}
	566
	567	PrintAndLog("Writing word %d with data %08X", Word, Data);
	568
	569	c.cmd = CMD_EM4X_WRITE_WORD;
	570	c.d.asBytes[0] = 0x0; //Normal mode
	571	c.arg[0] = Data;
	572	c.arg[1] = Word;
	573	c.arg[2] = 0;
	574	SendCommand(&c);
	575	return 0;
54a942b0	576	}
	577
	578	int CmdWriteWordPWD(const char *Cmd)
	579	{
23f0a7d8	580	int Word = 16; //default to invalid word
	581	int Data = 0xFFFFFFFF; //default to blank data
	582	int Password = 0xFFFFFFFF; //default to blank password
	583	UsbCommand c;
	584
	585	sscanf(Cmd, "%x %d %x", &Data, &Word, &Password);
	586
	587	if (Word > 15) {
	588	PrintAndLog("Word must be between 0 and 15");
	589	return 1;
	590	}
	591
	592	PrintAndLog("Writing word %d with data %08X and password %08X", Word, Data, Password);
	593
	594	c.cmd = CMD_EM4X_WRITE_WORD;
	595	c.d.asBytes[0] = 0x1; //Password mode
	596	c.arg[0] = Data;
	597	c.arg[1] = Word;
	598	c.arg[2] = Password;
	599	SendCommand(&c);
	600	return 0;
54a942b0	601	}
54a942b0	602
2d4eae76	603	static command_t CommandTable[] =
7fe9b0b7	604	{
23f0a7d8	605	{"help", CmdHelp, 1, "This help"},
23f0a7d8	606	{"em410xdemod", CmdEMdemodASK, 0, "[findone] -- Extract ID from EM410x tag (option 0 for continuous loop, 1 for only 1 tag)"},
8e0cf023	607	{"em410xread", CmdEM410xRead, 1, "[clock rate] -- Extract ID from EM410x tag in GraphBuffer"},
23f0a7d8	608	{"em410xsim", CmdEM410xSim, 0, "<UID> -- Simulate EM410x tag"},
	609	{"em410xwatch", CmdEM410xWatch, 0, "['h'] -- Watches for EM410x 125/134 kHz tags (option 'h' for 134)"},
	610	{"em410xspoof", CmdEM410xWatchnSpoof, 0, "['h'] --- Watches for EM410x 125/134 kHz tags, and replays them. (option 'h' for 134)" },
8e0cf023	611	{"em410xwrite", CmdEM410xWrite, 0, "<UID> <'0' T5555> <'1' T55x7> [clock rate] -- Write EM410x UID to T5555(Q5) or T55x7 tag, optionally setting clock rate"},
23f0a7d8	612	{"em4x50read", CmdEM4x50Read, 1, "Extract data from EM4x50 tag"},
	613	{"readword", CmdReadWord, 1, "<Word> -- Read EM4xxx word data"},
	614	{"readwordPWD", CmdReadWordPWD, 1, "<Word> <Password> -- Read EM4xxx word data in password mode"},
	615	{"writeword", CmdWriteWord, 1, "<Data> <Word> -- Write EM4xxx word data"},
	616	{"writewordPWD", CmdWriteWordPWD, 1, "<Data> <Word> <Password> -- Write EM4xxx word data in password mode"},
	617	{NULL, NULL, 0, NULL}
7fe9b0b7	618	};
	619
	620	int CmdLFEM4X(const char *Cmd)
	621	{
23f0a7d8	622	CmdsParse(CommandTable, Cmd);
23f0a7d8	623	return 0;
7fe9b0b7	624	}
	625
	626	int CmdHelp(const char *Cmd)
	627	{
23f0a7d8	628	CmdsHelp(CommandTable);
23f0a7d8	629	return 0;
7fe9b0b7	630	}