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 "cmdlfem4x.h"
  15
  16 char *global_em410xId;
  17
  18 static int CmdHelp(const char *Cmd);
  19
  20 int CmdEMdemodASK(const char *Cmd)
  21 {
  22         char cmdp = param_getchar(Cmd, 0);
  23         int findone = (cmdp == '1') ? 1 : 0;
  24         UsbCommand c={CMD_EM410X_DEMOD};
  25         c.arg[0]=findone;
  26         SendCommand(&c);
  27         return 0;
  28 }
  29
  30 /* Read the ID of an EM410x tag.
  31  * Format:
  32  *   1111 1111 1           <-- standard non-repeatable header
  33  *   XXXX [row parity bit] <-- 10 rows of 5 bits for our 40 bit tag ID
  34  *   ....
  35  *   CCCC                  <-- each bit here is parity for the 10 bits above in corresponding column
  36  *   0                     <-- stop bit, end of tag
  37  */
  38 int CmdEM410xRead(const char *Cmd)
  39 {
  40         uint32_t hi=0;
  41         uint64_t lo=0;
  42
  43         if(!AskEm410xDemod("", &hi, &lo, false)) return 0;
  44         PrintAndLog("EM410x pattern found: ");
  45         printEM410x(hi, lo);
  46         if (hi){
  47                 PrintAndLog ("EM410x XL pattern found");
  48                 return 0;
  49         }
  50         char id[12] = {0x00};
  51         //sprintf(id, "%010llx",lo);
  52          sprintf(id, "%010"PRIu64, lo);
  53
  54         global_em410xId = id;
  55         return 1;
  56 }
  57
  58 // emulate an EM410X tag
  59 int CmdEM410xSim(const char *Cmd)
  60 {
  61         int i, n, j, binary[4], parity[4];
  62
  63         char cmdp = param_getchar(Cmd, 0);
  64         uint8_t uid[5] = {0x00};
  65
  66         if (cmdp == 'h' || cmdp == 'H') {
  67                 PrintAndLog("Usage:  lf em4x em410xsim <UID> <clock>");
  68                 PrintAndLog("");
  69                 PrintAndLog("     sample: lf em4x em410xsim 0F0368568B");
  70                 return 0;
  71         }
  72         /* clock is 64 in EM410x tags */
  73         uint8_t clock = 64;
  74
  75         if (param_gethex(Cmd, 0, uid, 10)) {
  76                 PrintAndLog("UID must include 10 HEX symbols");
  77                 return 0;
  78         }
  79         param_getdec(Cmd, 1, &clock);
  80
  81         PrintAndLog("Starting simulating UID %02X%02X%02X%02X%02X  clock: %d", uid[0],uid[1],uid[2],uid[3],uid[4],clock);
  82         PrintAndLog("Press pm3-button to about simulation");
  83
  84
  85         /* clear our graph */
  86         ClearGraph(0);
  87
  88                 /* write 9 start bits */
  89                 for (i = 0; i < 9; i++)
  90                         AppendGraph(0, clock, 1);
  91
  92                 /* for each hex char */
  93                 parity[0] = parity[1] = parity[2] = parity[3] = 0;
  94                 for (i = 0; i < 10; i++)
  95                 {
  96                         /* read each hex char */
  97                         sscanf(&Cmd[i], "%1x", &n);
  98                         for (j = 3; j >= 0; j--, n/= 2)
  99                                 binary[j] = n % 2;
 100
 101                         /* append each bit */
 102                         AppendGraph(0, clock, binary[0]);
 103                         AppendGraph(0, clock, binary[1]);
 104                         AppendGraph(0, clock, binary[2]);
 105                         AppendGraph(0, clock, binary[3]);
 106
 107                         /* append parity bit */
 108                         AppendGraph(0, clock, binary[0] ^ binary[1] ^ binary[2] ^ binary[3]);
 109
 110                         /* keep track of column parity */
 111                         parity[0] ^= binary[0];
 112                         parity[1] ^= binary[1];
 113                         parity[2] ^= binary[2];
 114                         parity[3] ^= binary[3];
 115                 }
 116
 117                 /* parity columns */
 118                 AppendGraph(0, clock, parity[0]);
 119                 AppendGraph(0, clock, parity[1]);
 120                 AppendGraph(0, clock, parity[2]);
 121                 AppendGraph(0, clock, parity[3]);
 122
 123                 /* stop bit */
 124         AppendGraph(1, clock, 0);
 125
 126         CmdLFSim("0"); //240 start_gap.
 127         return 0;
 128 }
 129
 130 /* Function is equivalent of lf read + data samples + em410xread
 131  * looped until an EM410x tag is detected
 132  *
 133  * Why is CmdSamples("16000")?
 134  *  TBD: Auto-grow sample size based on detected sample rate.  IE: If the
 135  *       rate gets lower, then grow the number of samples
 136  *  Changed by martin, 4000 x 4 = 16000,
 137  *  see http://www.proxmark.org/forum/viewtopic.php?pid=7235#p7235
 138 */
 139 int CmdEM410xWatch(const char *Cmd)
 140 {
 141         do {
 142                 if (ukbhit()) {
 143                         printf("\naborted via keyboard!\n");
 144                         break;
 145                 }
 146
 147                 CmdLFRead("s");
 148                 getSamples("8201",true); //capture enough to get 2 complete preambles (4096*2+9)
 149         } while (!CmdEM410xRead(""));
 150
 151         return 0;
 152 }
 153
 154 //currently only supports manchester modulations
 155 int CmdEM410xWatchnSpoof(const char *Cmd)
 156 {
 157         CmdEM410xWatch(Cmd);
 158         PrintAndLog("# Replaying captured ID: %s",global_em410xId);
 159         CmdLFaskSim("");
 160         return 0;
 161 }
 162
 163 int CmdEM410xWrite(const char *Cmd)
 164 {
 165         uint64_t id = 0xFFFFFFFFFFFFFFFF; // invalid id value
 166         int card = 0xFF; // invalid card value
 167         uint32_t clock = 0; // invalid clock value
 168
 169         sscanf(Cmd, "%" PRIx64 " %d %d", &id, &card, &clock);
 170
 171         // Check ID
 172         if (id == 0xFFFFFFFFFFFFFFFF) {
 173                 PrintAndLog("Error! ID is required.\n");
 174                 return 0;
 175         }
 176         if (id >= 0x10000000000) {
 177                 PrintAndLog("Error! Given EM410x ID is longer than 40 bits.\n");
 178                 return 0;
 179         }
 180
 181         // Check Card
 182         if (card == 0xFF) {
 183                 PrintAndLog("Error! Card type required.\n");
 184                 return 0;
 185         }
 186         if (card < 0) {
 187                 PrintAndLog("Error! Bad card type selected.\n");
 188                 return 0;
 189         }
 190
 191         // Check Clock
 192                 // Default: 64
 193         if (clock == 0)
 194                 clock = 64;
 195
 196         // Allowed clock rates: 16, 32, 40 and 64
 197         if ((clock != 16) && (clock != 32) && (clock != 64) && (clock != 40)) {
 198                 PrintAndLog("Error! Clock rate %d not valid. Supported clock rates are 16, 32, 40 and 64.\n", clock);
 199                 return 0;
 200         }
 201
 202         if (card == 1) {
 203                 PrintAndLog("Writing %s tag with UID 0x%010" PRIx64 " (clock rate: %d)", "T55x7", id, clock);
 204                 // NOTE: We really should pass the clock in as a separate argument, but to
 205                 //   provide for backwards-compatibility for older firmware, and to avoid
 206                 //   having to add another argument to CMD_EM410X_WRITE_TAG, we just store
 207                 //   the clock rate in bits 8-15 of the card value
 208                 card = (card & 0xFF) | ((clock << 8) & 0xFF00);
 209         }       else if (card == 0) {
 210                 PrintAndLog("Writing %s tag with UID 0x%010" PRIx64, "T5555", id, clock);
 211                 card = (card & 0xFF) | ((clock << 8) & 0xFF00);
 212         } else {
 213                 PrintAndLog("Error! Bad card type selected.\n");
 214                 return 0;
 215         }
 216
 217         UsbCommand c = {CMD_EM410X_WRITE_TAG, {card, (uint32_t)(id >> 32), (uint32_t)id}};
 218         SendCommand(&c);
 219         return 0;
 220 }
 221
 222 bool EM_EndParityTest(uint8_t *BitStream, size_t size, uint8_t rows, uint8_t cols, uint8_t pType)
 223 {
 224         if (rows*cols>size) return false;
 225         uint8_t colP=0;
 226         //assume last col is a parity and do not test
 227         for (uint8_t colNum = 0; colNum < cols-1; colNum++) {
 228                 for (uint8_t rowNum = 0; rowNum < rows; rowNum++) {
 229                         colP ^= BitStream[(rowNum*cols)+colNum];
 230                 }
 231                 if (colP != pType) return false;
 232         }
 233         return true;
 234 }
 235
 236 bool EM_ByteParityTest(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 rowP=0;
 240         //assume last row is a parity row and do not test
 241         for (uint8_t rowNum = 0; rowNum < rows-1; rowNum++) {
 242                 for (uint8_t colNum = 0; colNum < cols; colNum++) {
 243                         rowP ^= BitStream[(rowNum*cols)+colNum];
 244                 }
 245                 if (rowP != pType) return false;
 246         }
 247         return true;
 248 }
 249
 250 uint32_t OutputEM4x50_Block(uint8_t *BitStream, size_t size, bool verbose, bool pTest)
 251 {
 252         if (size<45) return 0;
 253         uint32_t code = bytebits_to_byte(BitStream,8);
 254         code = code<<8 | bytebits_to_byte(BitStream+9,8);
 255         code = code<<8 | bytebits_to_byte(BitStream+18,8);
 256         code = code<<8 | bytebits_to_byte(BitStream+27,8);
 257         if (verbose || g_debugMode){
 258                 for (uint8_t i = 0; i<5; i++){
 259                         if (i == 4) PrintAndLog(""); //parity byte spacer
 260                         PrintAndLog("%d%d%d%d%d%d%d%d %d -> 0x%02x",
 261                             BitStream[i*9],
 262                             BitStream[i*9+1],
 263                             BitStream[i*9+2],
 264                             BitStream[i*9+3],
 265                             BitStream[i*9+4],
 266                             BitStream[i*9+5],
 267                             BitStream[i*9+6],
 268                             BitStream[i*9+7],
 269                             BitStream[i*9+8],
 270                             bytebits_to_byte(BitStream+i*9,8)
 271                         );
 272                 }
 273                 if (pTest)
 274                         PrintAndLog("Parity Passed");
 275                 else
 276                         PrintAndLog("Parity Failed");
 277         }
 278         return code;
 279 }
 280 /* Read the transmitted data of an EM4x50 tag
 281  * Format:
 282  *
 283  *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 284  *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 285  *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 286  *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 287  *  CCCCCCCC                         <- column parity bits
 288  *  0                                <- stop bit
 289  *  LW                               <- Listen Window
 290  *
 291  * This pattern repeats for every block of data being transmitted.
 292  * Transmission starts with two Listen Windows (LW - a modulated
 293  * pattern of 320 cycles each (32/32/128/64/64)).
 294  *
 295  * Note that this data may or may not be the UID. It is whatever data
 296  * is stored in the blocks defined in the control word First and Last
 297  * Word Read values. UID is stored in block 32.
 298  */
 299  //completed by Marshmellow
 300 int EM4x50Read(const char *Cmd, bool verbose)
 301 {
 302         uint8_t fndClk[] = {8,16,32,40,50,64,128};
 303         int clk = 0;
 304         int invert = 0;
 305         int tol = 0;
 306         int i, j, startblock, skip, block, start, end, low, high, minClk;
 307         bool complete = false;
 308         int tmpbuff[MAX_GRAPH_TRACE_LEN / 64];
 309         uint32_t Code[6];
 310         char tmp[6];
 311         char tmp2[20];
 312         int phaseoff;
 313         high = low = 0;
 314         memset(tmpbuff, 0, MAX_GRAPH_TRACE_LEN / 64);
 315
 316         // get user entry if any
 317         sscanf(Cmd, "%i %i", &clk, &invert);
 318
 319         // save GraphBuffer - to restore it later
 320         save_restoreGB(1);
 321
 322         // first get high and low values
 323         for (i = 0; i < GraphTraceLen; i++) {
 324                 if (GraphBuffer[i] > high)
 325                         high = GraphBuffer[i];
 326                 else if (GraphBuffer[i] < low)
 327                         low = GraphBuffer[i];
 328         }
 329
 330         i = 0;
 331         j = 0;
 332         minClk = 255;
 333         // get to first full low to prime loop and skip incomplete first pulse
 334         while ((GraphBuffer[i] < high) && (i < GraphTraceLen))
 335                 ++i;
 336         while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
 337                 ++i;
 338         skip = i;
 339
 340         // populate tmpbuff buffer with pulse lengths
 341         while (i < GraphTraceLen) {
 342                 // measure from low to low
 343                 while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
 344                         ++i;
 345                 start= i;
 346                 while ((GraphBuffer[i] < high) && (i < GraphTraceLen))
 347                         ++i;
 348                 while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
 349                         ++i;
 350                 if (j>=(MAX_GRAPH_TRACE_LEN/64)) {
 351                         break;
 352                 }
 353                 tmpbuff[j++]= i - start;
 354                 if (i-start < minClk && i < GraphTraceLen) {
 355                         minClk = i - start;
 356                 }
 357         }
 358         // set clock
 359         if (!clk) {
 360                 for (uint8_t clkCnt = 0; clkCnt<7; clkCnt++) {
 361                         tol = fndClk[clkCnt]/8;
 362                         if (minClk >= fndClk[clkCnt]-tol && minClk <= fndClk[clkCnt]+1) {
 363                                 clk=fndClk[clkCnt];
 364                                 break;
 365                         }
 366                 }
 367                 if (!clk) return 0;
 368         } else tol = clk/8;
 369
 370         // look for data start - should be 2 pairs of LW (pulses of clk*3,clk*2)
 371         start = -1;
 372         for (i= 0; i < j - 4 ; ++i) {
 373                 skip += tmpbuff[i];
 374                 if (tmpbuff[i] >= clk*3-tol && tmpbuff[i] <= clk*3+tol)  //3 clocks
 375                         if (tmpbuff[i+1] >= clk*2-tol && tmpbuff[i+1] <= clk*2+tol)  //2 clocks
 376                                 if (tmpbuff[i+2] >= clk*3-tol && tmpbuff[i+2] <= clk*3+tol) //3 clocks
 377                                         if (tmpbuff[i+3] >= clk-tol)  //1.5 to 2 clocks - depends on bit following
 378                                         {
 379                                                 start= i + 4;
 380                                                 break;
 381                                         }
 382         }
 383         startblock = i + 4;
 384
 385         // skip over the remainder of LW
 386         skip += tmpbuff[i+1] + tmpbuff[i+2] + clk;
 387         if (tmpbuff[i+3]>clk)
 388                 phaseoff = tmpbuff[i+3]-clk;
 389         else
 390                 phaseoff = 0;
 391         // now do it again to find the end
 392         end = skip;
 393         for (i += 3; i < j - 4 ; ++i) {
 394                 end += tmpbuff[i];
 395                 if (tmpbuff[i] >= clk*3-tol && tmpbuff[i] <= clk*3+tol)  //3 clocks
 396                         if (tmpbuff[i+1] >= clk*2-tol && tmpbuff[i+1] <= clk*2+tol)  //2 clocks
 397                                 if (tmpbuff[i+2] >= clk*3-tol && tmpbuff[i+2] <= clk*3+tol) //3 clocks
 398                                         if (tmpbuff[i+3] >= clk-tol)  //1.5 to 2 clocks - depends on bit following
 399                                         {
 400                                                 complete= true;
 401                                                 break;
 402                                         }
 403         }
 404         end = i;
 405         // report back
 406         if (verbose || g_debugMode) {
 407                 if (start >= 0) {
 408                         PrintAndLog("\nNote: one block = 50 bits (32 data, 12 parity, 6 marker)");
 409                 }       else {
 410                         PrintAndLog("No data found!, clock tried:%d",clk);
 411                         PrintAndLog("Try again with more samples.");
 412                         PrintAndLog("  or after a 'data askedge' command to clean up the read");
 413                         return 0;
 414                 }
 415         } else if (start < 0) return 0;
 416         start = skip;
 417         snprintf(tmp2, sizeof(tmp2),"%d %d 1000 %d", clk, invert, clk*47);
 418         // get rid of leading crap
 419         snprintf(tmp, sizeof(tmp), "%i", skip);
 420         CmdLtrim(tmp);
 421         bool pTest;
 422         bool AllPTest = true;
 423         // now work through remaining buffer printing out data blocks
 424         block = 0;
 425         i = startblock;
 426         while (block < 6) {
 427                 if (verbose || g_debugMode) PrintAndLog("\nBlock %i:", block);
 428                 skip = phaseoff;
 429
 430                 // look for LW before start of next block
 431                 for ( ; i < j - 4 ; ++i) {
 432                         skip += tmpbuff[i];
 433                         if (tmpbuff[i] >= clk*3-tol && tmpbuff[i] <= clk*3+tol)
 434                                 if (tmpbuff[i+1] >= clk-tol)
 435                                         break;
 436                 }
 437                 if (i >= j-4) break; //next LW not found
 438                 skip += clk;
 439                 if (tmpbuff[i+1]>clk)
 440                         phaseoff = tmpbuff[i+1]-clk;
 441                 else
 442                         phaseoff = 0;
 443                 i += 2;
 444                 if (ASKDemod(tmp2, false, false, 1) < 1) {
 445                         save_restoreGB(0);
 446                         return 0;
 447                 }
 448                 //set DemodBufferLen to just one block
 449                 DemodBufferLen = skip/clk;
 450                 //test parities
 451                 pTest = EM_ByteParityTest(DemodBuffer,DemodBufferLen,5,9,0);
 452                 pTest &= EM_EndParityTest(DemodBuffer,DemodBufferLen,5,9,0);
 453                 AllPTest &= pTest;
 454                 //get output
 455                 Code[block] = OutputEM4x50_Block(DemodBuffer,DemodBufferLen,verbose, pTest);
 456                 if (g_debugMode) PrintAndLog("\nskipping %d samples, bits:%d", skip, skip/clk);
 457                 //skip to start of next block
 458                 snprintf(tmp,sizeof(tmp),"%i",skip);
 459                 CmdLtrim(tmp);
 460                 block++;
 461                 if (i >= end) break; //in case chip doesn't output 6 blocks
 462         }
 463         //print full code:
 464         if (verbose || g_debugMode || AllPTest){
 465                 if (!complete) {
 466                         PrintAndLog("*** Warning!");
 467                         PrintAndLog("Partial data - no end found!");
 468                         PrintAndLog("Try again with more samples.");
 469                 }
 470                 PrintAndLog("Found data at sample: %i - using clock: %i", start, clk);
 471                 end = block;
 472                 for (block=0; block < end; block++){
 473                         PrintAndLog("Block %d: %08x",block,Code[block]);
 474                 }
 475                 if (AllPTest) {
 476                         PrintAndLog("Parities Passed");
 477                 } else {
 478                         PrintAndLog("Parities Failed");
 479                         PrintAndLog("Try cleaning the read samples with 'data askedge'");
 480                 }
 481         }
 482
 483         //restore GraphBuffer
 484         save_restoreGB(0);
 485         return (int)AllPTest;
 486 }
 487
 488 int CmdEM4x50Read(const char *Cmd)
 489 {
 490         return EM4x50Read(Cmd, true);
 491 }
 492
 493 int CmdReadWord(const char *Cmd)
 494 {
 495         int Word = -1; //default to invalid word
 496         UsbCommand c;
 497
 498         sscanf(Cmd, "%d", &Word);
 499
 500         if ( (Word > 15) | (Word < 0) ) {
 501                 PrintAndLog("Word must be between 0 and 15");
 502                 return 1;
 503         }
 504
 505         PrintAndLog("Reading word %d", Word);
 506
 507         c.cmd = CMD_EM4X_READ_WORD;
 508         c.d.asBytes[0] = 0x0; //Normal mode
 509         c.arg[0] = 0;
 510         c.arg[1] = Word;
 511         c.arg[2] = 0;
 512         SendCommand(&c);
 513         return 0;
 514 }
 515
 516 int CmdReadWordPWD(const char *Cmd)
 517 {
 518         int Word = -1; //default to invalid word
 519         int Password = 0xFFFFFFFF; //default to blank password
 520         UsbCommand c;
 521
 522         sscanf(Cmd, "%d %x", &Word, &Password);
 523
 524         if ( (Word > 15) | (Word < 0) ) {
 525                 PrintAndLog("Word must be between 0 and 15");
 526                 return 1;
 527         }
 528
 529         PrintAndLog("Reading word %d with password %08X", Word, Password);
 530
 531         c.cmd = CMD_EM4X_READ_WORD;
 532         c.d.asBytes[0] = 0x1; //Password mode
 533         c.arg[0] = 0;
 534         c.arg[1] = Word;
 535         c.arg[2] = Password;
 536         SendCommand(&c);
 537         return 0;
 538 }
 539
 540 int CmdWriteWord(const char *Cmd)
 541 {
 542         int Word = 16; //default to invalid block
 543         int Data = 0xFFFFFFFF; //default to blank data
 544         UsbCommand c;
 545
 546         sscanf(Cmd, "%x %d", &Data, &Word);
 547
 548         if (Word > 15) {
 549                 PrintAndLog("Word must be between 0 and 15");
 550                 return 1;
 551         }
 552
 553         PrintAndLog("Writing word %d with data %08X", Word, Data);
 554
 555         c.cmd = CMD_EM4X_WRITE_WORD;
 556         c.d.asBytes[0] = 0x0; //Normal mode
 557         c.arg[0] = Data;
 558         c.arg[1] = Word;
 559         c.arg[2] = 0;
 560         SendCommand(&c);
 561         return 0;
 562 }
 563
 564 int CmdWriteWordPWD(const char *Cmd)
 565 {
 566         int Word = 16; //default to invalid word
 567         int Data = 0xFFFFFFFF; //default to blank data
 568         int Password = 0xFFFFFFFF; //default to blank password
 569         UsbCommand c;
 570
 571         sscanf(Cmd, "%x %d %x", &Data, &Word, &Password);
 572
 573         if (Word > 15) {
 574                 PrintAndLog("Word must be between 0 and 15");
 575                 return 1;
 576         }
 577
 578         PrintAndLog("Writing word %d with data %08X and password %08X", Word, Data, Password);
 579
 580         c.cmd = CMD_EM4X_WRITE_WORD;
 581         c.d.asBytes[0] = 0x1; //Password mode
 582         c.arg[0] = Data;
 583         c.arg[1] = Word;
 584         c.arg[2] = Password;
 585         SendCommand(&c);
 586         return 0;
 587 }
 588
 589 static command_t CommandTable[] =
 590 {
 591         {"help", CmdHelp, 1, "This help"},
 592         {"em410xdemod", CmdEMdemodASK, 0, "[findone] -- Extract ID from EM410x tag (option 0 for continuous loop, 1 for only 1 tag)"},
 593         {"em410xread", CmdEM410xRead, 1, "[clock rate] -- Extract ID from EM410x tag in GraphBuffer"},
 594         {"em410xsim", CmdEM410xSim, 0, "<UID> -- Simulate EM410x tag"},
 595         {"em410xwatch", CmdEM410xWatch, 0, "['h'] -- Watches for EM410x 125/134 kHz tags (option 'h' for 134)"},
 596         {"em410xspoof", CmdEM410xWatchnSpoof, 0, "['h'] --- Watches for EM410x 125/134 kHz tags, and replays them. (option 'h' for 134)" },
 597         {"em410xwrite", CmdEM410xWrite, 0, "<UID> <'0' T5555> <'1' T55x7> [clock rate] -- Write EM410x UID to T5555(Q5) or T55x7 tag, optionally setting clock rate"},
 598         {"em4x50read", CmdEM4x50Read, 1, "Extract data from EM4x50 tag"},
 599         {"readword", CmdReadWord, 1, "<Word> -- Read EM4xxx word data"},
 600         {"readwordPWD", CmdReadWordPWD, 1, "<Word> <Password> -- Read EM4xxx word data in password mode"},
 601         {"writeword", CmdWriteWord, 1, "<Data> <Word> -- Write EM4xxx word data"},
 602         {"writewordPWD", CmdWriteWordPWD, 1, "<Data> <Word> <Password> -- Write EM4xxx word data in password mode"},
 603         {NULL, NULL, 0, NULL}
 604 };
 605
 606 int CmdLFEM4X(const char *Cmd) {
 607         clearCommandBuffer();
 608         CmdsParse(CommandTable, Cmd);
 609         return 0;
 610 }
 611
 612 int CmdHelp(const char *Cmd) {
 613         CmdsHelp(CommandTable);
 614         return 0;
 615 }