git.zerfleddert.de Git - proxmark3-svn/blob - client/cmdlfem4x.c

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