cvs.zerfleddert.de Git - proxmark3-svn/blob - client/cmdlft55xx.c

   1 //-----------------------------------------------------------------------------
   2 //
   3 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   4 // at your option, any later version. See the LICENSE.txt file for the text of
   5 // the license.
   6 //-----------------------------------------------------------------------------
   7 // Low frequency T55xx commands
   8 //-----------------------------------------------------------------------------
   9
  10 #include <stdio.h>
  11 #include <string.h>
  12 #include <inttypes.h>
  13 #include <ctype.h>
  14 #include <time.h>
  15 #include "proxmark3.h"
  16 #include "ui.h"
  17 #include "graph.h"
  18 #include "cmdmain.h"
  19 #include "cmdparser.h"
  20 #include "cmddata.h"
  21 #include "cmdlf.h"
  22 #include "cmdlft55xx.h"
  23 #include "util.h"
  24 #include "data.h"
  25 #include "lfdemod.h"
  26 #include "cmdhf14a.h" //for getTagInfo
  27 #include "protocols.h"
  28
  29 #define T55x7_CONFIGURATION_BLOCK 0x00
  30 #define T55x7_PAGE0 0x00
  31 #define T55x7_PAGE1 0x01
  32 //#define T55x7_PWD     0x00000010
  33 #define REGULAR_READ_MODE_BLOCK 0xFF
  34
  35 // Default configuration
  36 t55xx_conf_block_t config = { .modulation = DEMOD_ASK, .inverted = false, .offset = 0x00, .block0 = 0x00, .Q5 = false };
  37
  38 t55xx_conf_block_t Get_t55xx_Config(){
  39         return config;
  40 }
  41 void Set_t55xx_Config(t55xx_conf_block_t conf){
  42         config = conf;
  43 }
  44
  45 int usage_t55xx_config(){
  46         PrintAndLog("Usage: lf t55xx config [d <demodulation>] [i 1] [o <offset>] [Q5]");
  47         PrintAndLog("Options:");
  48         PrintAndLog("       h                        This help");
  49         PrintAndLog("       b <8|16|32|40|50|64|100|128>  Set bitrate");
  50         PrintAndLog("       d <FSK|FSK1|FSK1a|FSK2|FSK2a|ASK|PSK1|PSK2|NRZ|BI|BIa>  Set demodulation FSK / ASK / PSK / NRZ / Biphase / Biphase A");
  51         PrintAndLog("       i [1]                         Invert data signal, defaults to normal");
  52         PrintAndLog("       o [offset]                    Set offset, where data should start decode in bitstream");
  53         PrintAndLog("       Q5                            Set as Q5(T5555) chip instead of T55x7");
  54         PrintAndLog("       ST                            Set Sequence Terminator on");
  55         PrintAndLog("");
  56         PrintAndLog("Examples:");
  57         PrintAndLog("      lf t55xx config d FSK          - FSK demodulation");
  58         PrintAndLog("      lf t55xx config d FSK i 1      - FSK demodulation, inverse data");
  59         PrintAndLog("      lf t55xx config d FSK i 1 o 3  - FSK demodulation, inverse data, offset=3,start from position 3 to decode data");
  60         PrintAndLog("");
  61         return 0;
  62 }
  63 int usage_t55xx_read(){
  64         PrintAndLog("Usage:  lf t55xx read [b <block>] [p <password>] <override_safety> <page1>");
  65         PrintAndLog("Options:");
  66         PrintAndLog("     b <block>    - block number to read. Between 0-7");
  67         PrintAndLog("     p <password> - OPTIONAL password (8 hex characters)");
  68         PrintAndLog("     o            - OPTIONAL override safety check");
  69         PrintAndLog("     1            - OPTIONAL read Page 1 instead of Page 0");
  70         PrintAndLog("     ****WARNING****");
  71         PrintAndLog("     Use of read with password on a tag not configured for a pwd");
  72         PrintAndLog("     can damage the tag");
  73         PrintAndLog("");
  74         PrintAndLog("Examples:");
  75         PrintAndLog("      lf t55xx read b 0              - read data from block 0");
  76         PrintAndLog("      lf t55xx read b 0 p feedbeef   - read data from block 0 password feedbeef");
  77         PrintAndLog("      lf t55xx read b 0 p feedbeef o - read data from block 0 password feedbeef safety check");
  78         PrintAndLog("");
  79         return 0;
  80 }
  81 int usage_t55xx_write(){
  82         PrintAndLog("Usage:  lf t55xx write [b <block>] [d <data>] [p <password>] [1] [t]");
  83         PrintAndLog("Options:");
  84         PrintAndLog("     b <block>    - block number to write. Between 0-7");
  85         PrintAndLog("     d <data>     - 4 bytes of data to write (8 hex characters)");
  86         PrintAndLog("     p <password> - OPTIONAL password 4bytes (8 hex characters)");
  87         PrintAndLog("     1            - OPTIONAL write Page 1 instead of Page 0");
  88         PrintAndLog("     t            - OPTIONAL test mode write - ****DANGER****");
  89         PrintAndLog("");
  90         PrintAndLog("Examples:");
  91         PrintAndLog("      lf t55xx write b 3 d 11223344            - write 11223344 to block 3");
  92         PrintAndLog("      lf t55xx write b 3 d 11223344 p feedbeef - write 11223344 to block 3 password feedbeef");
  93         PrintAndLog("");
  94         return 0;
  95 }
  96 int usage_t55xx_trace() {
  97         PrintAndLog("Usage:  lf t55xx trace [1]");
  98         PrintAndLog("Options:");
  99         PrintAndLog("     [graph buffer data]  - if set, use Graphbuffer otherwise read data from tag.");
 100         PrintAndLog("");
 101         PrintAndLog("Examples:");
 102         PrintAndLog("      lf t55xx trace");
 103         PrintAndLog("      lf t55xx trace 1");
 104         PrintAndLog("");
 105         return 0;
 106 }
 107 int usage_t55xx_info() {
 108         PrintAndLog("Usage:  lf t55xx info [1]");
 109         PrintAndLog("Options:");
 110         PrintAndLog("     [graph buffer data]  - if set, use Graphbuffer otherwise read data from tag.");
 111         PrintAndLog("");
 112         PrintAndLog("Examples:");
 113         PrintAndLog("      lf t55xx info");
 114         PrintAndLog("      lf t55xx info 1");
 115         PrintAndLog("");
 116         return 0;
 117 }
 118 int usage_t55xx_dump(){
 119         PrintAndLog("Usage:  lf t55xx dump <password> [o]");
 120         PrintAndLog("Options:");
 121         PrintAndLog("     <password>  - OPTIONAL password 4bytes (8 hex symbols)");
 122         PrintAndLog("     o           - OPTIONAL override, force pwd read despite danger to card");
 123         PrintAndLog("");
 124         PrintAndLog("Examples:");
 125         PrintAndLog("      lf t55xx dump");
 126         PrintAndLog("      lf t55xx dump feedbeef o");
 127         PrintAndLog("");
 128         return 0;
 129 }
 130 int usage_t55xx_detect(){
 131         PrintAndLog("Usage:  lf t55xx detect [1] [p <password>]");
 132         PrintAndLog("Options:");
 133         PrintAndLog("     1             - if set, use Graphbuffer otherwise read data from tag.");
 134         PrintAndLog("     p <password>  - OPTIONAL password (8 hex characters)");
 135         PrintAndLog("");
 136         PrintAndLog("Examples:");
 137         PrintAndLog("      lf t55xx detect");
 138         PrintAndLog("      lf t55xx detect 1");
 139         PrintAndLog("      lf t55xx detect p 11223344");
 140         PrintAndLog("");
 141         return 0;
 142 }
 143 int usage_t55xx_detectP1(){
 144         PrintAndLog("Command: Detect Page 1 of a t55xx chip");
 145         PrintAndLog("Usage:  lf t55xx p1detect [1] [p <password>]");
 146         PrintAndLog("Options:");
 147         PrintAndLog("     1             - if set, use Graphbuffer otherwise read data from tag.");
 148         PrintAndLog("     p <password>  - OPTIONAL password (8 hex characters)");
 149         PrintAndLog("");
 150         PrintAndLog("Examples:");
 151         PrintAndLog("      lf t55xx p1detect");
 152         PrintAndLog("      lf t55xx p1detect 1");
 153         PrintAndLog("      lf t55xx p1detect p 11223344");
 154         PrintAndLog("");
 155         return 0;
 156 }
 157 int usage_t55xx_wakup(){
 158         PrintAndLog("Usage:  lf t55xx wakeup [h] <password>");
 159         PrintAndLog("This commands send the Answer-On-Request command and leaves the readerfield ON afterwards.");
 160         PrintAndLog("Options:");
 161         PrintAndLog("     h             - this help");
 162         PrintAndLog("     <password>  - [required] password 4bytes (8 hex symbols)");
 163         PrintAndLog("");
 164         PrintAndLog("Examples:");
 165                 PrintAndLog("      lf t55xx wakeup 11223344  - send wakeup password");
 166         return 0;
 167 }
 168 int usage_t55xx_bruteforce(){
 169         PrintAndLog("This command uses A) bruteforce to scan a number range");
 170         PrintAndLog("                  B) a dictionary attack");
 171         PrintAndLog("Usage: lf t55xx bruteforce <start password> <end password> [i <*.dic>]");
 172         PrintAndLog("       password must be 4 bytes (8 hex symbols)");
 173         PrintAndLog("Options:");
 174         PrintAndLog("     h           - this help");
 175         PrintAndLog("     <start_pwd> - 4 byte hex value to start pwd search at");
 176         PrintAndLog("     <end_pwd>   - 4 byte hex value to end pwd search at");
 177         PrintAndLog("     i <*.dic>   - loads a default keys dictionary file <*.dic>");
 178         PrintAndLog("");
 179         PrintAndLog("Examples:");
 180         PrintAndLog("       lf t55xx bruteforce aaaaaaaa bbbbbbbb");
 181         PrintAndLog("       lf t55xx bruteforce i default_pwd.dic");
 182         PrintAndLog("");
 183         return 0;
 184 }
 185 int usage_t55xx_wipe(){
 186         PrintAndLog("Usage:  lf t55xx wipe [h] [Q5]");
 187         PrintAndLog("This commands wipes a tag, fills blocks 1-7 with zeros and a default configuration block");
 188         PrintAndLog("Options:");
 189         PrintAndLog("     h   - this help");
 190         PrintAndLog("     Q5  - indicates to use the T5555 (Q5) default configuration block");
 191         PrintAndLog("");
 192         PrintAndLog("Examples:");
 193         PrintAndLog("      lf t55xx wipe    -  wipes a t55x7 tag,    config block 0x000880E0");
 194         PrintAndLog("      lf t55xx wipe Q5 -  wipes a t5555 Q5 tag, config block 0x6001F004");
 195         return 0;
 196 }
 197
 198
 199 static int CmdHelp(const char *Cmd);
 200
 201 void printT5xxHeader(uint8_t page){
 202         PrintAndLog("Reading Page %d:", page);
 203         PrintAndLog("blk | hex data | binary");
 204         PrintAndLog("----+----------+---------------------------------");
 205 }
 206
 207 int CmdT55xxSetConfig(const char *Cmd) {
 208
 209         uint8_t offset = 0;
 210         char modulation[5] = {0x00};
 211         char tmp = 0x00;
 212         uint8_t bitRate = 0;
 213         uint8_t rates[9] = {8,16,32,40,50,64,100,128,0};
 214         uint8_t cmdp = 0;
 215         bool errors = false;
 216         while(param_getchar(Cmd, cmdp) != 0x00 && !errors)
 217         {
 218                 tmp = param_getchar(Cmd, cmdp);
 219                 switch(tmp)
 220                 {
 221                 case 'h':
 222                 case 'H':
 223                         return usage_t55xx_config();
 224                 case 'b':
 225                         errors |= param_getdec(Cmd, cmdp+1, &bitRate);
 226                         if ( !errors){
 227                                 uint8_t i = 0;
 228                                 for (; i < 9; i++){
 229                                         if (rates[i]==bitRate) {
 230                                                 config.bitrate = i;
 231                                                 break;
 232                                         }
 233                                 }
 234                                 if (i==9) errors = true;
 235                         }
 236                         cmdp+=2;
 237                         break;
 238                 case 'd':
 239                         param_getstr(Cmd, cmdp+1, modulation);
 240                         cmdp += 2;
 241
 242                         if ( strcmp(modulation, "FSK" ) == 0) {
 243                                 config.modulation = DEMOD_FSK;
 244                         } else if ( strcmp(modulation, "FSK1" ) == 0) {
 245                                 config.modulation = DEMOD_FSK1;
 246                                 config.inverted=1;
 247                         } else if ( strcmp(modulation, "FSK1a" ) == 0) {
 248                                 config.modulation = DEMOD_FSK1a;
 249                                 config.inverted=0;
 250                         } else if ( strcmp(modulation, "FSK2" ) == 0) {
 251                                 config.modulation = DEMOD_FSK2;
 252                                 config.inverted=0;
 253                         } else if ( strcmp(modulation, "FSK2a" ) == 0) {
 254                                 config.modulation = DEMOD_FSK2a;
 255                                 config.inverted=1;
 256                         } else if ( strcmp(modulation, "ASK" ) == 0) {
 257                                 config.modulation = DEMOD_ASK;
 258                         } else if ( strcmp(modulation, "NRZ" ) == 0) {
 259                                 config.modulation = DEMOD_NRZ;
 260                         } else if ( strcmp(modulation, "PSK1" ) == 0) {
 261                                 config.modulation = DEMOD_PSK1;
 262                         } else if ( strcmp(modulation, "PSK2" ) == 0) {
 263                                 config.modulation = DEMOD_PSK2;
 264                         } else if ( strcmp(modulation, "PSK3" ) == 0) {
 265                                 config.modulation = DEMOD_PSK3;
 266                         } else if ( strcmp(modulation, "BIa" ) == 0) {
 267                                 config.modulation = DEMOD_BIa;
 268                                 config.inverted=1;
 269                         } else if ( strcmp(modulation, "BI" ) == 0) {
 270                                 config.modulation = DEMOD_BI;
 271                                 config.inverted=0;
 272                         } else {
 273                                 PrintAndLog("Unknown modulation '%s'", modulation);
 274                                 errors = true;
 275                         }
 276                         break;
 277                 case 'i':
 278                         config.inverted = param_getchar(Cmd,cmdp+1) == '1';
 279                         cmdp+=2;
 280                         break;
 281                 case 'o':
 282                         errors |= param_getdec(Cmd, cmdp+1, &offset);
 283                         if ( !errors )
 284                                 config.offset = offset;
 285                         cmdp+=2;
 286                         break;
 287                 case 'Q':
 288                 case 'q':
 289                         config.Q5 = true;
 290                         cmdp++;
 291                         break;
 292                 case 'S':
 293                 case 's':
 294                         config.ST = true;
 295                         cmdp++;
 296                         break;
 297                 default:
 298                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 299                         errors = true;
 300                         break;
 301                 }
 302         }
 303
 304         // No args
 305         if (cmdp == 0) return printConfiguration( config );
 306
 307         //Validations
 308         if (errors) return usage_t55xx_config();
 309
 310         config.block0 = 0;
 311         return printConfiguration ( config );
 312 }
 313
 314 int T55xxReadBlock(uint8_t block, bool page1, bool usepwd, bool override, uint32_t password){
 315         //Password mode
 316         if ( usepwd ) {
 317                 // try reading the config block and verify that PWD bit is set before doing this!
 318                 if ( !override ) {
 319                         if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, false, 0 ) ) return 0;
 320                         if ( !tryDetectModulation() ) {
 321                                 PrintAndLog("Safety Check: Could not detect if PWD bit is set in config block. Exits.");
 322                                 return 0;
 323                         } else {
 324                                 PrintAndLog("Safety Check: PWD bit is NOT set in config block. Reading without password...");
 325                                 usepwd = false;
 326                                 page1 = false;
 327                         }
 328                 } else {
 329                         PrintAndLog("Safety Check Overriden - proceeding despite risk");
 330                 }
 331         }
 332
 333         if (!AquireData(page1, block, usepwd, password) )       return 0;
 334         if (!DecodeT55xxBlock()) return 0;
 335
 336         char blk[10]={0};
 337         sprintf(blk,"%d", block);
 338         printT55xxBlock(blk);
 339         return 1;
 340 }
 341
 342 int CmdT55xxReadBlock(const char *Cmd) {
 343         uint8_t block = REGULAR_READ_MODE_BLOCK;
 344         uint32_t password = 0; //default to blank Block 7
 345         bool usepwd = false;
 346         bool override = false;
 347         bool page1 = false;
 348         bool errors = false;
 349         uint8_t cmdp = 0;
 350         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 351                 switch(param_getchar(Cmd, cmdp)) {
 352                 case 'h':
 353                 case 'H':
 354                         return usage_t55xx_read();
 355                 case 'b':
 356                 case 'B':
 357                         errors |= param_getdec(Cmd, cmdp+1, &block);
 358                         cmdp += 2;
 359                         break;
 360                 case 'o':
 361                 case 'O':
 362                         override = true;
 363                         cmdp++;
 364                         break;
 365                 case 'p':
 366                 case 'P':
 367                         password = param_get32ex(Cmd, cmdp+1, 0, 16);
 368                         usepwd = true;
 369                         cmdp += 2;
 370                         break;
 371                 case '1':
 372                         page1 = true;
 373                         cmdp++;
 374                         break;
 375                 default:
 376                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 377                         errors = true;
 378                         break;
 379                 }
 380         }
 381         if (errors) return usage_t55xx_read();
 382
 383         if (block > 7 && block != REGULAR_READ_MODE_BLOCK       ) {
 384                 PrintAndLog("Block must be between 0 and 7");
 385                 return 0;
 386         }
 387
 388         printT5xxHeader(page1);
 389         return T55xxReadBlock(block, page1, usepwd, override, password);
 390 }
 391
 392 bool DecodeT55xxBlock(){
 393
 394         char buf[30] = {0x00};
 395         char *cmdStr = buf;
 396         int ans = 0;
 397         bool ST = config.ST;
 398         uint8_t bitRate[8] = {8,16,32,40,50,64,100,128};
 399         DemodBufferLen = 0x00;
 400
 401         switch( config.modulation ){
 402                 case DEMOD_FSK:
 403                         snprintf(cmdStr, sizeof(buf),"%d %d", bitRate[config.bitrate], config.inverted );
 404                         ans = FSKrawDemod(cmdStr, false);
 405                         break;
 406                 case DEMOD_FSK1:
 407                 case DEMOD_FSK1a:
 408                         snprintf(cmdStr, sizeof(buf),"%d %d 8 5", bitRate[config.bitrate], config.inverted );
 409                         ans = FSKrawDemod(cmdStr, false);
 410                         break;
 411                 case DEMOD_FSK2:
 412                 case DEMOD_FSK2a:
 413                         snprintf(cmdStr, sizeof(buf),"%d %d 10 8", bitRate[config.bitrate], config.inverted );
 414                         ans = FSKrawDemod(cmdStr, false);
 415                         break;
 416                 case DEMOD_ASK:
 417                         snprintf(cmdStr, sizeof(buf),"%d %d 1", bitRate[config.bitrate], config.inverted );
 418                         ans = ASKDemod_ext(cmdStr, false, false, 1, &ST);
 419                         break;
 420                 case DEMOD_PSK1:
 421                         // skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)
 422                         save_restoreGB(1);
 423                         CmdLtrim("160");
 424                         snprintf(cmdStr, sizeof(buf),"%d %d 6", bitRate[config.bitrate], config.inverted );
 425                         ans = PSKDemod(cmdStr, false);
 426                         //undo trim samples
 427                         save_restoreGB(0);
 428                         break;
 429                 case DEMOD_PSK2: //inverted won't affect this
 430                 case DEMOD_PSK3: //not fully implemented
 431                         // skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)
 432                         save_restoreGB(1);
 433                         CmdLtrim("160");
 434                         snprintf(cmdStr, sizeof(buf),"%d 0 6", bitRate[config.bitrate] );
 435                         ans = PSKDemod(cmdStr, false);
 436                         psk1TOpsk2(DemodBuffer, DemodBufferLen);
 437                         //undo trim samples
 438                         save_restoreGB(0);
 439                         break;
 440                 case DEMOD_NRZ:
 441                         snprintf(cmdStr, sizeof(buf),"%d %d 1", bitRate[config.bitrate], config.inverted );
 442                         ans = NRZrawDemod(cmdStr, false);
 443                         break;
 444                 case DEMOD_BI:
 445                 case DEMOD_BIa:
 446                         snprintf(cmdStr, sizeof(buf),"0 %d %d 1", bitRate[config.bitrate], config.inverted );
 447                         ans = ASKbiphaseDemod(cmdStr, false);
 448                         break;
 449                 default:
 450                         return false;
 451         }
 452         return (bool) ans;
 453 }
 454
 455 bool DecodeT5555TraceBlock() {
 456         DemodBufferLen = 0x00;
 457
 458         // According to datasheet. Always: RF/64, not inverted, Manchester
 459         return (bool) ASKDemod("64 0 1", false, false, 1);
 460 }
 461
 462 int CmdT55xxDetect(const char *Cmd){
 463         bool errors = false;
 464         bool useGB = false;
 465         bool usepwd = false;
 466         uint32_t password = 0;
 467         uint8_t cmdp = 0;
 468
 469         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 470                 switch(param_getchar(Cmd, cmdp)) {
 471                 case 'h':
 472                 case 'H':
 473                         return usage_t55xx_detect();
 474                 case 'p':
 475                 case 'P':
 476                         password = param_get32ex(Cmd, cmdp+1, 0, 16);
 477                         usepwd = true;
 478                         cmdp += 2;
 479                         break;
 480                 case '1':
 481                         // use Graphbuffer data
 482                         useGB = true;
 483                         cmdp++;
 484                         break;
 485                 default:
 486                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 487                         errors = true;
 488                         break;
 489                 }
 490         }
 491         if (errors) return usage_t55xx_detect();
 492
 493         if ( !useGB) {
 494                 if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, usepwd, password) )
 495                         return 0;
 496         }
 497
 498         if ( !tryDetectModulation() )
 499                 PrintAndLog("Could not detect modulation automatically. Try setting it manually with \'lf t55xx config\'");
 500
 501         return 1;
 502 }
 503
 504 // detect configuration?
 505 bool tryDetectModulation(){
 506         uint8_t hits = 0;
 507         t55xx_conf_block_t tests[15];
 508         int bitRate=0;
 509         uint8_t fc1 = 0, fc2 = 0, ans = 0;
 510         int clk=0;
 511         ans = fskClocks(&fc1, &fc2, (uint8_t *)&clk, false);
 512         if (ans && ((fc1==10 && fc2==8) || (fc1==8 && fc2==5))) {
 513                 if ( FSKrawDemod("0 0", false) && test(DEMOD_FSK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 514                         tests[hits].modulation = DEMOD_FSK;
 515                         if (fc1==8 && fc2 == 5)
 516                                 tests[hits].modulation = DEMOD_FSK1a;
 517                         else if (fc1==10 && fc2 == 8)
 518                                 tests[hits].modulation = DEMOD_FSK2;
 519                         tests[hits].bitrate = bitRate;
 520                         tests[hits].inverted = false;
 521                         tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 522                         tests[hits].ST = false;
 523                         ++hits;
 524                 }
 525                 if ( FSKrawDemod("0 1", false) && test(DEMOD_FSK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 526                         tests[hits].modulation = DEMOD_FSK;
 527                         if (fc1 == 8 && fc2 == 5)
 528                                 tests[hits].modulation = DEMOD_FSK1;
 529                         else if (fc1 == 10 && fc2 == 8)
 530                                 tests[hits].modulation = DEMOD_FSK2a;
 531                         tests[hits].bitrate = bitRate;
 532                         tests[hits].inverted = true;
 533                         tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 534                         tests[hits].ST = false;
 535                         ++hits;
 536                 }
 537         } else {
 538                 clk = GetAskClock("", false, false);
 539                 if (clk>0) {
 540                         tests[hits].ST = true;
 541                         if ( ASKDemod_ext("0 0 1", false, false, 1, &tests[hits].ST) && test(DEMOD_ASK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 542                                 tests[hits].modulation = DEMOD_ASK;
 543                                 tests[hits].bitrate = bitRate;
 544                                 tests[hits].inverted = false;
 545                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 546                                 ++hits;
 547                         }
 548                         tests[hits].ST = true;
 549                         if ( ASKDemod_ext("0 1 1", false, false, 1, &tests[hits].ST)  && test(DEMOD_ASK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 550                                 tests[hits].modulation = DEMOD_ASK;
 551                                 tests[hits].bitrate = bitRate;
 552                                 tests[hits].inverted = true;
 553                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 554                                 ++hits;
 555                         }
 556                         if ( ASKbiphaseDemod("0 0 0 2", false) && test(DEMOD_BI, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5) ) {
 557                                 tests[hits].modulation = DEMOD_BI;
 558                                 tests[hits].bitrate = bitRate;
 559                                 tests[hits].inverted = false;
 560                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 561                                 tests[hits].ST = false;
 562                                 ++hits;
 563                         }
 564                         if ( ASKbiphaseDemod("0 0 1 2", false) && test(DEMOD_BIa, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5) ) {
 565                                 tests[hits].modulation = DEMOD_BIa;
 566                                 tests[hits].bitrate = bitRate;
 567                                 tests[hits].inverted = true;
 568                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 569                                 tests[hits].ST = false;
 570                                 ++hits;
 571                         }
 572                 }
 573                 clk = GetNrzClock("", false, false);
 574                 if (clk>8) { //clock of rf/8 is likely a false positive, so don't use it.
 575                         if ( NRZrawDemod("0 0 1", false)  && test(DEMOD_NRZ, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 576                                 tests[hits].modulation = DEMOD_NRZ;
 577                                 tests[hits].bitrate = bitRate;
 578                                 tests[hits].inverted = false;
 579                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 580                                 tests[hits].ST = false;
 581                                 ++hits;
 582                         }
 583
 584                         if ( NRZrawDemod("0 1 1", false)  && test(DEMOD_NRZ, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 585                                 tests[hits].modulation = DEMOD_NRZ;
 586                                 tests[hits].bitrate = bitRate;
 587                                 tests[hits].inverted = true;
 588                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 589                                 tests[hits].ST = false;
 590                                 ++hits;
 591                         }
 592                 }
 593
 594                 clk = GetPskClock("", false, false);
 595                 if (clk>0) {
 596                         // allow undo
 597                         save_restoreGB(1);
 598                         // skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)
 599                         CmdLtrim("160");
 600                         if ( PSKDemod("0 0 6", false) && test(DEMOD_PSK1, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 601                                 tests[hits].modulation = DEMOD_PSK1;
 602                                 tests[hits].bitrate = bitRate;
 603                                 tests[hits].inverted = false;
 604                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 605                                 tests[hits].ST = false;
 606                                 ++hits;
 607                         }
 608                         if ( PSKDemod("0 1 6", false) && test(DEMOD_PSK1, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 609                                 tests[hits].modulation = DEMOD_PSK1;
 610                                 tests[hits].bitrate = bitRate;
 611                                 tests[hits].inverted = true;
 612                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 613                                 tests[hits].ST = false;
 614                                 ++hits;
 615                         }
 616                         // PSK2 - needs a call to psk1TOpsk2.
 617                         if ( PSKDemod("0 0 6", false)) {
 618                                 psk1TOpsk2(DemodBuffer, DemodBufferLen);
 619                                 if (test(DEMOD_PSK2, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)){
 620                                         tests[hits].modulation = DEMOD_PSK2;
 621                                         tests[hits].bitrate = bitRate;
 622                                         tests[hits].inverted = false;
 623                                         tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 624                                         tests[hits].ST = false;
 625                                         ++hits;
 626                                 }
 627                         } // inverse waves does not affect this demod
 628                         // PSK3 - needs a call to psk1TOpsk2.
 629                         if ( PSKDemod("0 0 6", false)) {
 630                                 psk1TOpsk2(DemodBuffer, DemodBufferLen);
 631                                 if (test(DEMOD_PSK3, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)){
 632                                         tests[hits].modulation = DEMOD_PSK3;
 633                                         tests[hits].bitrate = bitRate;
 634                                         tests[hits].inverted = false;
 635                                         tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 636                                         tests[hits].ST = false;
 637                                         ++hits;
 638                                 }
 639                         } // inverse waves does not affect this demod
 640                         //undo trim samples
 641                         save_restoreGB(0);
 642                 }
 643         }
 644         if ( hits == 1) {
 645                 config.modulation = tests[0].modulation;
 646                 config.bitrate = tests[0].bitrate;
 647                 config.inverted = tests[0].inverted;
 648                 config.offset = tests[0].offset;
 649                 config.block0 = tests[0].block0;
 650                 config.Q5 = tests[0].Q5;
 651                 config.ST = tests[0].ST;
 652                 printConfiguration( config );
 653                 return true;
 654         }
 655
 656         if ( hits > 1) {
 657                 PrintAndLog("Found [%d] possible matches for modulation.",hits);
 658                 for(int i=0; i<hits; ++i){
 659                         PrintAndLog("--[%d]---------------", i+1);
 660                         printConfiguration( tests[i] );
 661                 }
 662         }
 663         return false;
 664 }
 665
 666 bool testModulation(uint8_t mode, uint8_t modread){
 667         switch( mode ){
 668                 case DEMOD_FSK:
 669                         if (modread >= DEMOD_FSK1 && modread <= DEMOD_FSK2a) return true;
 670                         break;
 671                 case DEMOD_ASK:
 672                         if (modread == DEMOD_ASK) return true;
 673                         break;
 674                 case DEMOD_PSK1:
 675                         if (modread == DEMOD_PSK1) return true;
 676                         break;
 677                 case DEMOD_PSK2:
 678                         if (modread == DEMOD_PSK2) return true;
 679                         break;
 680                 case DEMOD_PSK3:
 681                         if (modread == DEMOD_PSK3) return true;
 682                         break;
 683                 case DEMOD_NRZ:
 684                         if (modread == DEMOD_NRZ) return true;
 685                         break;
 686                 case DEMOD_BI:
 687                         if (modread == DEMOD_BI) return true;
 688                         break;
 689                 case DEMOD_BIa:
 690                         if (modread == DEMOD_BIa) return true;
 691                         break;
 692                 default:
 693                         return false;
 694         }
 695         return false;
 696 }
 697
 698 bool testQ5Modulation(uint8_t   mode, uint8_t   modread){
 699         switch( mode ){
 700                 case DEMOD_FSK:
 701                         if (modread >= 4 && modread <= 5) return true;
 702                         break;
 703                 case DEMOD_ASK:
 704                         if (modread == 0) return true;
 705                         break;
 706                 case DEMOD_PSK1:
 707                         if (modread == 1) return true;
 708                         break;
 709                 case DEMOD_PSK2:
 710                         if (modread == 2) return true;
 711                         break;
 712                 case DEMOD_PSK3:
 713                         if (modread == 3) return true;
 714                         break;
 715                 case DEMOD_NRZ:
 716                         if (modread == 7) return true;
 717                         break;
 718                 case DEMOD_BI:
 719                         if (modread == 6) return true;
 720                         break;
 721                 default:
 722                         return false;
 723         }
 724         return false;
 725 }
 726
 727 int convertQ5bitRate(uint8_t bitRateRead) {
 728         uint8_t expected[] = {8, 16, 32, 40, 50, 64, 100, 128};
 729         for (int i=0; i<8; i++)
 730                 if (expected[i] == bitRateRead)
 731                         return i;
 732
 733         return -1;
 734 }
 735
 736 bool testQ5(uint8_t mode, uint8_t *offset, int *fndBitRate, uint8_t     clk){
 737
 738         if ( DemodBufferLen < 64 ) return false;
 739         uint8_t si = 0;
 740         for (uint8_t idx = 28; idx < 64; idx++){
 741                 si = idx;
 742                 if ( PackBits(si, 28, DemodBuffer) == 0x00 ) continue;
 743
 744                 uint8_t safer     = PackBits(si, 4, DemodBuffer); si += 4;     //master key
 745                 uint8_t resv      = PackBits(si, 8, DemodBuffer); si += 8;
 746                 // 2nibble must be zeroed.
 747                 if (safer != 0x6 && safer != 0x9) continue;
 748                 if ( resv > 0x00) continue;
 749                 //uint8_t       pageSel   = PackBits(si, 1, DemodBuffer); si += 1;
 750                 //uint8_t fastWrite = PackBits(si, 1, DemodBuffer); si += 1;
 751                 si += 1+1;
 752                 int bitRate       = PackBits(si, 6, DemodBuffer)*2 + 2; si += 6;     //bit rate
 753                 if (bitRate > 128 || bitRate < 8) continue;
 754
 755                 //uint8_t AOR       = PackBits(si, 1, DemodBuffer); si += 1;
 756                 //uint8_t PWD       = PackBits(si, 1, DemodBuffer); si += 1;
 757                 //uint8_t pskcr     = PackBits(si, 2, DemodBuffer); si += 2;  //could check psk cr
 758                 //uint8_t inverse   = PackBits(si, 1, DemodBuffer); si += 1;
 759                 si += 1+1+2+1;
 760                 uint8_t modread   = PackBits(si, 3, DemodBuffer); si += 3;
 761                 uint8_t maxBlk    = PackBits(si, 3, DemodBuffer); si += 3;
 762                 //uint8_t ST        = PackBits(si, 1, DemodBuffer); si += 1;
 763                 if (maxBlk == 0) continue;
 764                 //test modulation
 765                 if (!testQ5Modulation(mode, modread)) continue;
 766                 if (bitRate != clk) continue;
 767                 *fndBitRate = convertQ5bitRate(bitRate);
 768                 if (*fndBitRate < 0) continue;
 769                 *offset = idx;
 770
 771                 return true;
 772         }
 773         return false;
 774 }
 775
 776 bool testBitRate(uint8_t readRate, uint8_t clk){
 777         uint8_t expected[] = {8, 16, 32, 40, 50, 64, 100, 128};
 778         if (expected[readRate] == clk)
 779                 return true;
 780
 781         return false;
 782 }
 783
 784 bool test(uint8_t mode, uint8_t *offset, int *fndBitRate, uint8_t clk, bool *Q5){
 785
 786         if ( DemodBufferLen < 64 ) return false;
 787         uint8_t si = 0;
 788         for (uint8_t idx = 28; idx < 64; idx++){
 789                 si = idx;
 790                 if ( PackBits(si, 28, DemodBuffer) == 0x00 ) continue;
 791
 792                 uint8_t safer    = PackBits(si, 4, DemodBuffer); si += 4;     //master key
 793                 uint8_t resv     = PackBits(si, 4, DemodBuffer); si += 4;     //was 7 & +=7+3 //should be only 4 bits if extended mode
 794                 // 2nibble must be zeroed.
 795                 // moved test to here, since this gets most faults first.
 796                 if ( resv > 0x00) continue;
 797
 798                 int bitRate      = PackBits(si, 6, DemodBuffer); si += 6;     //bit rate (includes extended mode part of rate)
 799                 uint8_t extend   = PackBits(si, 1, DemodBuffer); si += 1;     //bit 15 extended mode
 800                 uint8_t modread  = PackBits(si, 5, DemodBuffer); si += 5+2+1;
 801                 //uint8_t pskcr   = PackBits(si, 2, DemodBuffer); si += 2+1;  //could check psk cr
 802                 //uint8_t nml01    = PackBits(si, 1, DemodBuffer); si += 1+5;   //bit 24, 30, 31 could be tested for 0 if not extended mode
 803                 //uint8_t nml02    = PackBits(si, 2, DemodBuffer); si += 2;
 804
 805                 //if extended mode
 806                 bool extMode =( (safer == 0x6 || safer == 0x9) && extend) ? true : false;
 807
 808                 if (!extMode) {
 809                         if (bitRate > 7) continue;
 810                         if (!testBitRate(bitRate, clk)) continue;
 811                 } else { //extended mode bitrate = same function to calc bitrate as em4x05
 812                         if (EM4x05_GET_BITRATE(bitRate) != clk) continue;
 813                 }
 814                 //test modulation
 815                 if (!testModulation(mode, modread)) continue;
 816                 *fndBitRate = bitRate;
 817                 *offset = idx;
 818                 *Q5 = false;
 819                 return true;
 820         }
 821         if (testQ5(mode, offset, fndBitRate, clk)) {
 822                 *Q5 = true;
 823                 return true;
 824         }
 825         return false;
 826 }
 827
 828 void printT55xxBlock(const char *blockNum){
 829
 830         uint8_t i = config.offset;
 831         uint8_t endpos = 32 + i;
 832         uint32_t blockData = 0;
 833         uint8_t bits[64] = {0x00};
 834
 835         if ( !DemodBufferLen) return;
 836
 837         if ( endpos > DemodBufferLen){
 838                 PrintAndLog("The configured offset %d is too big. Possible offset: %d)", i, DemodBufferLen-32);
 839                 return;
 840         }
 841
 842         for (; i < endpos; ++i)
 843                 bits[i - config.offset]=DemodBuffer[i];
 844
 845         blockData = PackBits(0, 32, bits);
 846
 847         PrintAndLog("  %s | %08X | %s", blockNum, blockData, sprint_bin(bits,32));
 848 }
 849
 850 int special(const char *Cmd) {
 851         uint32_t blockData = 0;
 852         uint8_t bits[32] = {0x00};
 853
 854         PrintAndLog("OFFSET | DATA       | BINARY");
 855         PrintAndLog("----------------------------------------------------");
 856         int i,j = 0;
 857         for (; j < 64; ++j){
 858
 859                 for (i = 0; i < 32; ++i)
 860                         bits[i]=DemodBuffer[j+i];
 861
 862                 blockData = PackBits(0, 32, bits);
 863
 864                 PrintAndLog("    %02d | 0x%08X | %s",j , blockData, sprint_bin(bits,32));
 865         }
 866         return 0;
 867 }
 868
 869 int printConfiguration( t55xx_conf_block_t b){
 870         PrintAndLog("Chip Type  : %s", (b.Q5) ? "T5555(Q5)" : "T55x7");
 871         PrintAndLog("Modulation : %s", GetSelectedModulationStr(b.modulation) );
 872         PrintAndLog("Bit Rate   : %s", GetBitRateStr(b.bitrate, (b.block0 & T55x7_X_MODE)) );
 873         PrintAndLog("Inverted   : %s", (b.inverted) ? "Yes" : "No" );
 874         PrintAndLog("Offset     : %d", b.offset);
 875         PrintAndLog("Seq. Term. : %s", (b.ST) ? "Yes" : "No" );
 876         PrintAndLog("Block0     : 0x%08X", b.block0);
 877         PrintAndLog("");
 878         return 0;
 879 }
 880
 881 int CmdT55xxWakeUp(const char *Cmd) {
 882         uint32_t password = 0;
 883         if ( strlen(Cmd) <= 0 ) return usage_t55xx_wakup();
 884         char cmdp = param_getchar(Cmd, 0);
 885         if ( cmdp == 'h' || cmdp == 'H') return usage_t55xx_wakup();
 886
 887         password = param_get32ex(Cmd, 0, 0, 16);
 888
 889         UsbCommand c = {CMD_T55XX_WAKEUP, {password, 0, 0}};
 890         clearCommandBuffer();
 891         SendCommand(&c);
 892         PrintAndLog("Wake up command sent. Try read now");
 893         return 0;
 894 }
 895
 896 int CmdT55xxWriteBlock(const char *Cmd) {
 897         uint8_t block = 0xFF; //default to invalid block
 898         uint32_t data = 0; //default to blank Block
 899         uint32_t password = 0; //default to blank Block 7
 900         bool usepwd = false;
 901         bool page1 = false;
 902         bool gotdata = false;
 903         bool testMode = false;
 904         bool errors = false;
 905         uint8_t cmdp = 0;
 906         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 907                 switch(param_getchar(Cmd, cmdp)) {
 908                 case 'h':
 909                 case 'H':
 910                         return usage_t55xx_write();
 911                 case 'b':
 912                 case 'B':
 913                         errors |= param_getdec(Cmd, cmdp+1, &block);
 914                         cmdp += 2;
 915                         break;
 916                 case 'd':
 917                 case 'D':
 918                         data = param_get32ex(Cmd, cmdp+1, 0, 16);
 919                         gotdata = true;
 920                         cmdp += 2;
 921                         break;
 922                 case 'p':
 923                 case 'P':
 924                         password = param_get32ex(Cmd, cmdp+1, 0, 16);
 925                         usepwd = true;
 926                         cmdp += 2;
 927                         break;
 928                 case 't':
 929                 case 'T':
 930                         testMode = true;
 931                         cmdp++;
 932                         break;
 933                 case '1':
 934                         page1 = true;
 935                         cmdp++;
 936                         break;
 937                 default:
 938                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 939                         errors = true;
 940                         break;
 941                 }
 942         }
 943         if (errors || !gotdata) return usage_t55xx_write();
 944
 945         if (block > 7) {
 946                 PrintAndLog("Block number must be between 0 and 7");
 947                 return 0;
 948         }
 949
 950         UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {data, block, 0}};
 951         UsbCommand resp;
 952         c.d.asBytes[0] = (page1) ? 0x2 : 0;
 953         c.d.asBytes[0] |= (testMode) ? 0x4 : 0;
 954
 955         char pwdStr[16] = {0};
 956         snprintf(pwdStr, sizeof(pwdStr), "pwd: 0x%08X", password);
 957
 958         PrintAndLog("Writing page %d  block: %02d  data: 0x%08X %s", page1, block, data,  (usepwd) ? pwdStr : "" );
 959
 960         //Password mode
 961         if (usepwd) {
 962                 c.arg[2] = password;
 963                 c.d.asBytes[0] |= 0x1;
 964         }
 965         clearCommandBuffer();
 966         SendCommand(&c);
 967         if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
 968                 PrintAndLog("Error occurred, device did not ACK write operation. (May be due to old firmware)");
 969                 return 0;
 970         }
 971         return 1;
 972 }
 973
 974 int CmdT55xxReadTrace(const char *Cmd) {
 975         char cmdp = param_getchar(Cmd, 0);
 976         bool pwdmode = false;
 977         uint32_t password = 0;
 978         if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H')
 979                 return usage_t55xx_trace();
 980
 981         if (strlen(Cmd)==0)
 982                 if ( !AquireData( T55x7_PAGE1, REGULAR_READ_MODE_BLOCK, pwdmode, password ) )
 983                         return 0;
 984
 985         if ( config.Q5 ) {
 986                 if (!DecodeT5555TraceBlock()) return 0;
 987         } else {
 988                 if (!DecodeT55xxBlock()) return 0;
 989         }
 990
 991         if ( !DemodBufferLen ) return 0;
 992
 993         RepaintGraphWindow();
 994         uint8_t repeat = (config.offset > 5) ? 32 : 0;
 995
 996         uint8_t si = config.offset+repeat;
 997         uint32_t bl1     = PackBits(si, 32, DemodBuffer);
 998         uint32_t bl2     = PackBits(si+32, 32, DemodBuffer);
 999
1000         if (config.Q5) {
1001                 uint32_t hdr = PackBits(si, 9,  DemodBuffer); si += 9;
1002
1003                 if (hdr != 0x1FF) {
1004                         PrintAndLog("Invalid Q5 Trace data header (expected 0x1FF, found %X)", hdr);
1005                         return 0;
1006                 }
1007
1008                 t5555_tracedata_t data = {.bl1 = bl1, .bl2 = bl2, .icr = 0, .lotidc = '?', .lotid = 0, .wafer = 0, .dw =0};
1009
1010                 data.icr     = PackBits(si, 2,  DemodBuffer); si += 2;
1011                 data.lotidc  = 'Z' - PackBits(si, 2,  DemodBuffer); si += 3;
1012
1013                 data.lotid   = PackBits(si, 4,  DemodBuffer); si += 5;
1014                 data.lotid <<= 4;
1015                 data.lotid  |= PackBits(si, 4,  DemodBuffer); si += 5;
1016                 data.lotid <<= 4;
1017                 data.lotid  |= PackBits(si, 4,  DemodBuffer); si += 5;
1018                 data.lotid <<= 4;
1019                 data.lotid  |= PackBits(si, 4,  DemodBuffer); si += 5;
1020                 data.lotid <<= 1;
1021                 data.lotid  |= PackBits(si, 1,  DemodBuffer); si += 1;
1022
1023                 data.wafer   = PackBits(si, 3,  DemodBuffer); si += 4;
1024                 data.wafer <<= 2;
1025                 data.wafer  |= PackBits(si, 2,  DemodBuffer); si += 2;
1026
1027                 data.dw      = PackBits(si, 2,  DemodBuffer); si += 3;
1028                 data.dw    <<= 4;
1029                 data.dw     |= PackBits(si, 4,  DemodBuffer); si += 5;
1030                 data.dw    <<= 4;
1031                 data.dw     |= PackBits(si, 4,  DemodBuffer); si += 5;
1032                 data.dw    <<= 4;
1033                 data.dw     |= PackBits(si, 4,  DemodBuffer); si += 5;
1034
1035                 printT5555Trace(data, repeat);
1036
1037         } else {
1038
1039                 t55x7_tracedata_t data = {.bl1 = bl1, .bl2 = bl2, .acl = 0, .mfc = 0, .cid = 0, .year = 0, .quarter = 0, .icr = 0,  .lotid = 0, .wafer = 0, .dw = 0};
1040
1041                 data.acl = PackBits(si, 8,  DemodBuffer); si += 8;
1042                 if ( data.acl != 0xE0 ) {
1043                         PrintAndLog("The modulation is most likely wrong since the ACL is not 0xE0. ");
1044                         return 0;
1045                 }
1046
1047                 data.mfc     = PackBits(si, 8,  DemodBuffer); si += 8;
1048                 data.cid     = PackBits(si, 5,  DemodBuffer); si += 5;
1049                 data.icr     = PackBits(si, 3,  DemodBuffer); si += 3;
1050                 data.year    = PackBits(si, 4,  DemodBuffer); si += 4;
1051                 data.quarter = PackBits(si, 2,  DemodBuffer); si += 2;
1052                 data.lotid   = PackBits(si, 14, DemodBuffer); si += 14;
1053                 data.wafer   = PackBits(si, 5,  DemodBuffer); si += 5;
1054                 data.dw      = PackBits(si, 15, DemodBuffer);
1055
1056                 time_t t = time(NULL);
1057                 struct tm tm = *localtime(&t);
1058                 if ( data.year > tm.tm_year-110)
1059                         data.year += 2000;
1060                 else
1061                         data.year += 2010;
1062
1063                 printT55x7Trace(data, repeat);
1064         }
1065         return 0;
1066 }
1067
1068 void printT55x7Trace( t55x7_tracedata_t data, uint8_t repeat ){
1069         PrintAndLog("-- T55x7 Trace Information ----------------------------------");
1070         PrintAndLog("-------------------------------------------------------------");
1071         PrintAndLog(" ACL Allocation class (ISO/IEC 15963-1)  : 0x%02X (%d)", data.acl, data.acl);
1072         PrintAndLog(" MFC Manufacturer ID (ISO/IEC 7816-6)    : 0x%02X (%d) - %s", data.mfc, data.mfc, getTagInfo(data.mfc));
1073         PrintAndLog(" CID                                     : 0x%02X (%d) - %s", data.cid, data.cid, GetModelStrFromCID(data.cid));
1074         PrintAndLog(" ICR IC Revision                         : %d", data.icr );
1075         PrintAndLog(" Manufactured");
1076         PrintAndLog("     Year/Quarter : %d/%d", data.year, data.quarter);
1077         PrintAndLog("     Lot ID       : %d", data.lotid );
1078         PrintAndLog("     Wafer number : %d", data.wafer);
1079         PrintAndLog("     Die Number   : %d", data.dw);
1080         PrintAndLog("-------------------------------------------------------------");
1081         PrintAndLog(" Raw Data - Page 1");
1082         PrintAndLog("     Block 1  : 0x%08X  %s", data.bl1, sprint_bin(DemodBuffer+config.offset+repeat,32) );
1083         PrintAndLog("     Block 2  : 0x%08X  %s", data.bl2, sprint_bin(DemodBuffer+config.offset+repeat+32,32) );
1084         PrintAndLog("-------------------------------------------------------------");
1085
1086         /*
1087         TRACE - BLOCK O
1088                 Bits    Definition                                                              HEX
1089                 1-8             ACL Allocation class (ISO/IEC 15963-1)  0xE0
1090                 9-16    MFC Manufacturer ID (ISO/IEC 7816-6)    0x15 Atmel Corporation
1091                 17-21   CID                                                                             0x1 = Atmel ATA5577M1  0x2 = Atmel ATA5577M2
1092                 22-24   ICR IC revision
1093                 25-28   YEAR (BCD encoded)                                              9 (= 2009)
1094                 29-30   QUARTER                                                                 1,2,3,4
1095                 31-32   LOT ID
1096
1097         TRACE - BLOCK 1
1098                 1-12    LOT ID
1099                 13-17   Wafer number
1100                 18-32   DW,  die number sequential
1101         */
1102 }
1103
1104 void printT5555Trace( t5555_tracedata_t data, uint8_t repeat ){
1105         PrintAndLog("-- T5555 (Q5) Trace Information -----------------------------");
1106         PrintAndLog("-------------------------------------------------------------");
1107         PrintAndLog(" ICR IC Revision  : %d", data.icr );
1108         PrintAndLog("     Lot          : %c%d", data.lotidc, data.lotid);
1109         PrintAndLog("     Wafer number : %d", data.wafer);
1110         PrintAndLog("     Die Number   : %d", data.dw);
1111         PrintAndLog("-------------------------------------------------------------");
1112         PrintAndLog(" Raw Data - Page 1");
1113         PrintAndLog("     Block 1  : 0x%08X  %s", data.bl1, sprint_bin(DemodBuffer+config.offset+repeat,32) );
1114         PrintAndLog("     Block 2  : 0x%08X  %s", data.bl2, sprint_bin(DemodBuffer+config.offset+repeat+32,32) );
1115
1116         /*
1117                 ** Q5 **
1118                 TRACE - BLOCK O and BLOCK1
1119                 Bits    Definition                              HEX
1120                 1-9             Header                  0x1FF
1121                 10-11 IC Revision
1122                 12-13 Lot ID char
1123                 15-35 Lot ID (NB parity)
1124                 36-41 Wafer number (NB parity)
1125                 42-58 DW, die number sequential (NB parity)
1126                 60-63 Parity bits
1127                 64    Always zero
1128         */
1129 }
1130
1131 //need to add Q5 info...
1132 int CmdT55xxInfo(const char *Cmd){
1133         /*
1134                 Page 0 Block 0 Configuration data.
1135                 Normal mode
1136                 Extended mode
1137         */
1138         bool pwdmode = false;
1139         uint32_t password = 0;
1140         char cmdp = param_getchar(Cmd, 0);
1141
1142         if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H')
1143                 return usage_t55xx_info();
1144
1145         if (strlen(Cmd)==0)
1146                 if ( !AquireData( T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, pwdmode, password ) )
1147                         return 1;
1148
1149         if (!DecodeT55xxBlock()) return 1;
1150
1151         // too little space to start with
1152         if ( DemodBufferLen < 32) return 1;
1153
1154         uint8_t si = config.offset;
1155         uint32_t bl0      = PackBits(si, 32, DemodBuffer);
1156
1157         uint32_t safer    = PackBits(si, 4, DemodBuffer); si += 4;
1158         uint32_t resv     = PackBits(si, 7, DemodBuffer); si += 7;
1159         uint32_t dbr      = PackBits(si, 3, DemodBuffer); si += 3;
1160         uint32_t extend   = PackBits(si, 1, DemodBuffer); si += 1;
1161         uint32_t datamod  = PackBits(si, 5, DemodBuffer); si += 5;
1162         uint32_t pskcf    = PackBits(si, 2, DemodBuffer); si += 2;
1163         uint32_t aor      = PackBits(si, 1, DemodBuffer); si += 1;
1164         uint32_t otp      = PackBits(si, 1, DemodBuffer); si += 1;
1165         uint32_t maxblk   = PackBits(si, 3, DemodBuffer); si += 3;
1166         uint32_t pwd      = PackBits(si, 1, DemodBuffer); si += 1;
1167         uint32_t sst      = PackBits(si, 1, DemodBuffer); si += 1;
1168         uint32_t fw       = PackBits(si, 1, DemodBuffer); si += 1;
1169         uint32_t inv      = PackBits(si, 1, DemodBuffer); si += 1;
1170         uint32_t por      = PackBits(si, 1, DemodBuffer); si += 1;
1171
1172         if (config.Q5) PrintAndLog("*** Warning *** Config Info read off a Q5 will not display as expected");
1173         PrintAndLog("");
1174         PrintAndLog("-- T55x7 Configuration & Tag Information --------------------");
1175         PrintAndLog("-------------------------------------------------------------");
1176         PrintAndLog(" Safer key                 : %s", GetSaferStr(safer));
1177         PrintAndLog(" reserved                  : %d", resv);
1178         PrintAndLog(" Data bit rate             : %s", GetBitRateStr(dbr, extend));
1179         PrintAndLog(" eXtended mode             : %s", (extend) ? "Yes - Warning":"No");
1180         PrintAndLog(" Modulation                : %s", GetModulationStr(datamod));
1181         PrintAndLog(" PSK clock frequency       : %d", pskcf);
1182         PrintAndLog(" AOR - Answer on Request   : %s", (aor) ? "Yes":"No");
1183         PrintAndLog(" OTP - One Time Pad        : %s", (otp) ? "Yes - Warning":"No" );
1184         PrintAndLog(" Max block                 : %d", maxblk);
1185         PrintAndLog(" Password mode             : %s", (pwd) ? "Yes":"No");
1186         PrintAndLog(" Sequence Start Terminator : %s", (sst) ? "Yes":"No");
1187         PrintAndLog(" Fast Write                : %s", (fw)  ? "Yes":"No");
1188         PrintAndLog(" Inverse data              : %s", (inv) ? "Yes":"No");
1189         PrintAndLog(" POR-Delay                 : %s", (por) ? "Yes":"No");
1190         PrintAndLog("-------------------------------------------------------------");
1191         PrintAndLog(" Raw Data - Page 0");
1192         PrintAndLog("     Block 0  : 0x%08X  %s", bl0, sprint_bin(DemodBuffer+config.offset,32) );
1193         PrintAndLog("-------------------------------------------------------------");
1194
1195         return 0;
1196 }
1197
1198 int CmdT55xxDump(const char *Cmd){
1199
1200         uint32_t password = 0;
1201         char cmdp = param_getchar(Cmd, 0);
1202         bool override = false;
1203         if ( cmdp == 'h' || cmdp == 'H') return usage_t55xx_dump();
1204
1205         bool usepwd = ( strlen(Cmd) > 0);
1206         if ( usepwd ){
1207                 password = param_get32ex(Cmd, 0, 0, 16);
1208                 if (param_getchar(Cmd, 1) =='o' )
1209                         override = true;
1210         }
1211
1212         printT5xxHeader(0);
1213         for ( uint8_t i = 0; i <8; ++i)
1214                 T55xxReadBlock(i, 0, usepwd, override, password);
1215
1216         printT5xxHeader(1);
1217         for ( uint8_t   i = 0; i<4; i++)
1218                 T55xxReadBlock(i, 1, usepwd, override, password);
1219
1220         return 1;
1221 }
1222
1223 int AquireData( uint8_t page, uint8_t block, bool pwdmode, uint32_t password ){
1224         // arg0 bitmodes:
1225         // bit0 = pwdmode
1226         // bit1 = page to read from
1227         uint8_t arg0 = (page<<1) | pwdmode;
1228         UsbCommand c = {CMD_T55XX_READ_BLOCK, {arg0, block, password}};
1229
1230         clearCommandBuffer();
1231         SendCommand(&c);
1232         if ( !WaitForResponseTimeout(CMD_ACK,NULL,2500) ) {
1233                 PrintAndLog("command execution time out");
1234                 return 0;
1235         }
1236
1237         uint8_t got[12000];
1238         GetFromBigBuf(got,sizeof(got),0);
1239         WaitForResponse(CMD_ACK,NULL);
1240         setGraphBuf(got, sizeof(got));
1241         return 1;
1242 }
1243
1244 char * GetBitRateStr(uint32_t id, bool xmode) {
1245         static char buf[25];
1246
1247         char *retStr = buf;
1248         if (xmode) { //xmode bitrate calc is same as em4x05 calc
1249                 snprintf(retStr,sizeof(buf),"%d - RF/%d", id, EM4x05_GET_BITRATE(id));
1250         } else {
1251                 switch (id) {
1252                         case 0:   snprintf(retStr,sizeof(buf),"%d - RF/8",id);   break;
1253                         case 1:   snprintf(retStr,sizeof(buf),"%d - RF/16",id);  break;
1254                         case 2:   snprintf(retStr,sizeof(buf),"%d - RF/32",id);  break;
1255                         case 3:   snprintf(retStr,sizeof(buf),"%d - RF/40",id);  break;
1256                         case 4:   snprintf(retStr,sizeof(buf),"%d - RF/50",id);  break;
1257                         case 5:   snprintf(retStr,sizeof(buf),"%d - RF/64",id);  break;
1258                         case 6:   snprintf(retStr,sizeof(buf),"%d - RF/100",id); break;
1259                         case 7:   snprintf(retStr,sizeof(buf),"%d - RF/128",id); break;
1260                         default:  snprintf(retStr,sizeof(buf),"%d - (Unknown)",id); break;
1261                 }
1262         }
1263         return buf;
1264 }
1265
1266 char * GetSaferStr(uint32_t id) {
1267         static char buf[40];
1268         char *retStr = buf;
1269
1270         snprintf(retStr,sizeof(buf),"%d",id);
1271         if (id == 6) {
1272                 snprintf(retStr,sizeof(buf),"%d - passwd",id);
1273         }
1274         if (id == 9 ){
1275                 snprintf(retStr,sizeof(buf),"%d - testmode",id);
1276         }
1277
1278         return buf;
1279 }
1280
1281 char * GetModulationStr( uint32_t id){
1282         static char buf[60];
1283         char *retStr = buf;
1284
1285         switch (id){
1286                 case 0: snprintf(retStr,sizeof(buf),"%d - DIRECT (ASK/NRZ)",id); break;
1287                 case 1: snprintf(retStr,sizeof(buf),"%d - PSK 1 phase change when input changes",id); break;
1288                 case 2: snprintf(retStr,sizeof(buf),"%d - PSK 2 phase change on bitclk if input high",id); break;
1289                 case 3: snprintf(retStr,sizeof(buf),"%d - PSK 3 phase change on rising edge of input",id); break;
1290                 case 4: snprintf(retStr,sizeof(buf),"%d - FSK 1 RF/8  RF/5",id); break;
1291                 case 5: snprintf(retStr,sizeof(buf),"%d - FSK 2 RF/8  RF/10",id); break;
1292                 case 6: snprintf(retStr,sizeof(buf),"%d - FSK 1a RF/5  RF/8",id); break;
1293                 case 7: snprintf(retStr,sizeof(buf),"%d - FSK 2a RF/10  RF/8",id); break;
1294                 case 8: snprintf(retStr,sizeof(buf),"%d - Manchester",id); break;
1295                 case 16: snprintf(retStr,sizeof(buf),"%d - Biphase",id); break;
1296                 case 0x18: snprintf(retStr,sizeof(buf),"%d - Biphase a - AKA Conditional Dephase Encoding(CDP)",id); break;
1297                 case 17: snprintf(retStr,sizeof(buf),"%d - Reserved",id); break;
1298                 default: snprintf(retStr,sizeof(buf),"0x%02X (Unknown)",id); break;
1299                 }
1300         return buf;
1301 }
1302
1303 char * GetModelStrFromCID(uint32_t cid){
1304
1305         static char buf[10];
1306         char *retStr = buf;
1307
1308         if (cid == 1) snprintf(retStr, sizeof(buf),"ATA5577M1");
1309         if (cid == 2) snprintf(retStr, sizeof(buf),"ATA5577M2");
1310         return buf;
1311 }
1312
1313 char * GetSelectedModulationStr( uint8_t id){
1314
1315         static char buf[20];
1316         char *retStr = buf;
1317
1318         switch (id) {
1319                 case DEMOD_FSK: snprintf(retStr,sizeof(buf),"FSK");     break;
1320                 case DEMOD_FSK1: snprintf(retStr,sizeof(buf),"FSK1"); break;
1321                 case DEMOD_FSK1a: snprintf(retStr,sizeof(buf),"FSK1a"); break;
1322                 case DEMOD_FSK2: snprintf(retStr,sizeof(buf),"FSK2"); break;
1323                 case DEMOD_FSK2a: snprintf(retStr,sizeof(buf),"FSK2a"); break;
1324                 case DEMOD_ASK: snprintf(retStr,sizeof(buf),"ASK"); break;
1325                 case DEMOD_NRZ: snprintf(retStr,sizeof(buf),"DIRECT/NRZ"); break;
1326                 case DEMOD_PSK1: snprintf(retStr,sizeof(buf),"PSK1"); break;
1327                 case DEMOD_PSK2: snprintf(retStr,sizeof(buf),"PSK2"); break;
1328                 case DEMOD_PSK3: snprintf(retStr,sizeof(buf),"PSK3"); break;
1329                 case DEMOD_BI: snprintf(retStr,sizeof(buf),"BIPHASE"); break;
1330                 case DEMOD_BIa: snprintf(retStr,sizeof(buf),"BIPHASEa - (CDP)"); break;
1331                 default: snprintf(retStr,sizeof(buf),"(Unknown)"); break;
1332         }
1333         return buf;
1334 }
1335
1336 uint32_t PackBits(uint8_t start, uint8_t len, uint8_t* bits){
1337
1338         int i = start;
1339         int j = len-1;
1340
1341         if (len > 32) return 0;
1342
1343         uint32_t tmp = 0;
1344         for (; j >= 0; --j, ++i)
1345                 tmp     |= bits[i] << j;
1346
1347         return tmp;
1348 }
1349
1350 int CmdResetRead(const char *Cmd) {
1351         UsbCommand c = {CMD_T55XX_RESET_READ, {0,0,0}};
1352
1353         clearCommandBuffer();
1354         SendCommand(&c);
1355         if ( !WaitForResponseTimeout(CMD_ACK,NULL,2500) ) {
1356                 PrintAndLog("command execution time out");
1357                 return 0;
1358         }
1359
1360         uint8_t got[BIGBUF_SIZE-1];
1361         GetFromBigBuf(got,sizeof(got),0);
1362         WaitForResponse(CMD_ACK,NULL);
1363         setGraphBuf(got, sizeof(got));
1364         return 1;
1365 }
1366
1367 int CmdT55xxWipe(const char *Cmd) {
1368         char writeData[20] = {0};
1369         char *ptrData = writeData;
1370
1371         char cmdp = param_getchar(Cmd, 0);
1372         if ( cmdp == 'h' || cmdp == 'H') return usage_t55xx_wipe();
1373
1374         bool Q5 = (cmdp == 'q' || cmdp == 'Q');
1375
1376         // Try with the default password to reset block 0
1377         // With a pwd should work even if pwd bit not set
1378         PrintAndLog("\nBeginning Wipe of a T55xx tag (assuming the tag is not password protected)\n");
1379
1380         if ( Q5 ){
1381                 snprintf(ptrData,sizeof(writeData),"b 0 d 6001F004 p 0");
1382         } else {
1383                 snprintf(ptrData,sizeof(writeData),"b 0 d 00088040 p 0");
1384         }
1385
1386         if (!CmdT55xxWriteBlock(ptrData)) PrintAndLog("Error writing blk 0");
1387
1388         for (uint8_t blk = 1; blk<8; blk++) {
1389                 snprintf(ptrData,sizeof(writeData),"b %d d 0", blk);
1390                 if (!CmdT55xxWriteBlock(ptrData))
1391                         PrintAndLog("Error writing blk %d", blk);
1392
1393                 memset(writeData, 0x00, sizeof(writeData));
1394         }
1395         return 0;
1396 }
1397
1398 int CmdT55xxBruteForce(const char *Cmd) {
1399
1400         // load a default pwd file.
1401         char buf[9];
1402         char filename[FILE_PATH_SIZE]={0};
1403         int keycnt = 0;
1404         int ch;
1405         uint8_t stKeyBlock = 20;
1406         uint8_t *keyBlock = NULL, *p = NULL;
1407         uint32_t start_password = 0x00000000; //start password
1408         uint32_t end_password   = 0xFFFFFFFF; //end   password
1409         bool found = false;
1410
1411         char cmdp = param_getchar(Cmd, 0);
1412         if (cmdp == 'h' || cmdp == 'H') return usage_t55xx_bruteforce();
1413
1414         keyBlock = calloc(stKeyBlock, 6);
1415         if (keyBlock == NULL) return 1;
1416
1417         if (cmdp == 'i' || cmdp == 'I') {
1418
1419                 int len = strlen(Cmd+2);
1420                 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
1421                 memcpy(filename, Cmd+2, len);
1422
1423                 FILE * f = fopen( filename , "r");
1424
1425                 if ( !f ) {
1426                         PrintAndLog("File: %s: not found or locked.", filename);
1427                         free(keyBlock);
1428                         return 1;
1429                 }
1430
1431                 while( fgets(buf, sizeof(buf), f) ) {
1432                         if (strlen(buf) < 8 || buf[7] == '\n') continue;
1433
1434                         while (fgetc(f) != '\n' && !feof(f)) ;  //goto next line
1435
1436                         //The line start with # is comment, skip
1437                         if( buf[0]=='#' ) continue;
1438
1439                         if (!isxdigit(buf[0])) {
1440                                 PrintAndLog("File content error. '%s' must include 8 HEX symbols", buf);
1441                                 continue;
1442                         }
1443
1444                         buf[8] = 0;
1445
1446                         if ( stKeyBlock - keycnt < 2) {
1447                                 p = realloc(keyBlock, 6*(stKeyBlock+=10));
1448                                 if (!p) {
1449                                         PrintAndLog("Cannot allocate memory for defaultKeys");
1450                                         free(keyBlock);
1451                                         fclose(f);
1452                                         return 2;
1453                                 }
1454                                 keyBlock = p;
1455                         }
1456                         memset(keyBlock + 4 * keycnt, 0, 4);
1457                         num_to_bytes(strtoll(buf, NULL, 16), 4, keyBlock + 4*keycnt);
1458                         PrintAndLog("chk custom pwd[%2d] %08X", keycnt, bytes_to_num(keyBlock + 4*keycnt, 4));
1459                         keycnt++;
1460                         memset(buf, 0, sizeof(buf));
1461                 }
1462                 fclose(f);
1463
1464                 if (keycnt == 0) {
1465                         PrintAndLog("No keys found in file");
1466                         free(keyBlock);
1467                         return 1;
1468                 }
1469                 PrintAndLog("Loaded %d keys", keycnt);
1470
1471                 // loop
1472                 uint64_t testpwd = 0x00;
1473                 for (uint16_t c = 0; c < keycnt; ++c ) {
1474
1475                         if (ukbhit()) {
1476                                 ch = getchar();
1477                                 (void)ch;
1478                                 printf("\naborted via keyboard!\n");
1479                                 free(keyBlock);
1480                                 return 0;
1481                         }
1482
1483                         testpwd = bytes_to_num(keyBlock + 4*c, 4);
1484
1485                         PrintAndLog("Testing %08X", testpwd);
1486
1487                         if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, true, testpwd)) {
1488                                 PrintAndLog("Aquireing data from device failed. Quitting");
1489                                 free(keyBlock);
1490                                 return 0;
1491                         }
1492
1493                         found = tryDetectModulation();
1494
1495                         if ( found ) {
1496                                 PrintAndLog("Found valid password: [%08X]", testpwd);
1497                                 free(keyBlock);
1498                                 return 0;
1499                         }
1500                 }
1501                 PrintAndLog("Password NOT found.");
1502                 free(keyBlock);
1503                 return 0;
1504         }
1505
1506         // Try to read Block 7, first :)
1507
1508         // incremental pwd range search
1509         start_password = param_get32ex(Cmd, 0, 0, 16);
1510         end_password = param_get32ex(Cmd, 1, 0, 16);
1511
1512         if ( start_password >= end_password ) {
1513                 free(keyBlock);
1514                 return usage_t55xx_bruteforce();
1515         }
1516         PrintAndLog("Search password range [%08X -> %08X]", start_password, end_password);
1517
1518         uint32_t i = start_password;
1519
1520         while ((!found) && (i <= end_password)) {
1521
1522                 printf(".");
1523                 fflush(stdout);
1524                 if (ukbhit()) {
1525                         ch = getchar();
1526                         (void)ch;
1527                         printf("\naborted via keyboard!\n");
1528                         free(keyBlock);
1529                         return 0;
1530                 }
1531
1532                 if (!AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, true, i)) {
1533                         PrintAndLog("Aquireing data from device failed. Quitting");
1534                         free(keyBlock);
1535                         return 0;
1536                 }
1537                 found = tryDetectModulation();
1538
1539                 if (found) break;
1540                 i++;
1541         }
1542
1543         PrintAndLog("");
1544
1545         if (found)
1546                 PrintAndLog("Found valid password: [%08x]", i);
1547         else
1548                 PrintAndLog("Password NOT found. Last tried: [%08x]", --i);
1549
1550         free(keyBlock);
1551         return 0;
1552 }
1553
1554 // note length of data returned is different for different chips.
1555 //   some return all page 1 (64 bits) and others return just that block (32 bits)
1556 //   unfortunately the 64 bits makes this more likely to get a false positive...
1557 bool tryDetectP1(bool getData) {
1558         uint8_t preamble[] = {1,1,1,0,0,0,0,0,0,0,0,1,0,1,0,1};
1559         size_t startIdx = 0;
1560         uint8_t fc1 = 0, fc2 = 0, ans = 0;
1561         int clk = 0;
1562         bool st = true;
1563
1564         if ( getData ) {
1565                 if ( !AquireData(T55x7_PAGE1, 1, false, 0) )
1566                         return false;
1567         }
1568
1569         // try fsk clock detect. if successful it cannot be any other type of modulation...  (in theory...)
1570         ans = fskClocks(&fc1, &fc2, (uint8_t *)&clk, false);
1571         if (ans && ((fc1==10 && fc2==8) || (fc1==8 && fc2==5))) {
1572                 if ( FSKrawDemod("0 0", false) &&
1573                           preambleSearchEx(DemodBuffer,preamble,sizeof(preamble),&DemodBufferLen,&startIdx,false) &&
1574                           (DemodBufferLen == 32 || DemodBufferLen == 64) ) {
1575                         return true;
1576                 }
1577                 if ( FSKrawDemod("0 1", false) &&
1578                           preambleSearchEx(DemodBuffer,preamble,sizeof(preamble),&DemodBufferLen,&startIdx,false) &&
1579                           (DemodBufferLen == 32 || DemodBufferLen == 64) ) {
1580                         return true;
1581                 }
1582                 return false;
1583         }
1584
1585         // try psk clock detect. if successful it cannot be any other type of modulation... (in theory...)
1586         clk = GetPskClock("", false, false);
1587         if (clk>0) {
1588                 // allow undo
1589                 // save_restoreGB(1);
1590                 // skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)
1591                 //CmdLtrim("160");
1592                 if ( PSKDemod("0 0 6", false) &&
1593                           preambleSearchEx(DemodBuffer,preamble,sizeof(preamble),&DemodBufferLen,&startIdx,false) &&
1594                           (DemodBufferLen == 32 || DemodBufferLen == 64) ) {
1595                         //save_restoreGB(0);
1596                         return true;
1597                 }
1598                 if ( PSKDemod("0 1 6", false) &&
1599                           preambleSearchEx(DemodBuffer,preamble,sizeof(preamble),&DemodBufferLen,&startIdx,false) &&
1600                           (DemodBufferLen == 32 || DemodBufferLen == 64) ) {
1601                         //save_restoreGB(0);
1602                         return true;
1603                 }
1604                 // PSK2 - needs a call to psk1TOpsk2.
1605                 if ( PSKDemod("0 0 6", false)) {
1606                         psk1TOpsk2(DemodBuffer, DemodBufferLen);
1607                         if (preambleSearchEx(DemodBuffer,preamble,sizeof(preamble),&DemodBufferLen,&startIdx,false) &&
1608                                   (DemodBufferLen == 32 || DemodBufferLen == 64) ) {
1609                                 //save_restoreGB(0);
1610                                 return true;
1611                         }
1612                 } // inverse waves does not affect PSK2 demod
1613                 //undo trim samples
1614                 //save_restoreGB(0);
1615                 // no other modulation clocks = 2 or 4 so quit searching
1616                 if (fc1 != 8) return false;
1617         }
1618
1619         // try ask clock detect.  it could be another type even if successful.
1620         clk = GetAskClock("", false, false);
1621         if (clk>0) {
1622                 if ( ASKDemod_ext("0 0 1", false, false, 1, &st) &&
1623                           preambleSearchEx(DemodBuffer,preamble,sizeof(preamble),&DemodBufferLen,&startIdx,false) &&
1624                           (DemodBufferLen == 32 || DemodBufferLen == 64) ) {
1625                         return true;
1626                 }
1627                 st = true;
1628                 if ( ASKDemod_ext("0 1 1", false, false, 1, &st)  &&
1629                           preambleSearchEx(DemodBuffer,preamble,sizeof(preamble),&DemodBufferLen,&startIdx,false) &&
1630                           (DemodBufferLen == 32 || DemodBufferLen == 64) ) {
1631                         return true;
1632                 }
1633                 if ( ASKbiphaseDemod("0 0 0 2", false) &&
1634                           preambleSearchEx(DemodBuffer,preamble,sizeof(preamble),&DemodBufferLen,&startIdx,false) &&
1635                           (DemodBufferLen == 32 || DemodBufferLen == 64) ) {
1636                         return true;
1637                 }
1638                 if ( ASKbiphaseDemod("0 0 1 2", false) &&
1639                           preambleSearchEx(DemodBuffer,preamble,sizeof(preamble),&DemodBufferLen,&startIdx,false) &&
1640                           (DemodBufferLen == 32 || DemodBufferLen == 64) ) {
1641                         return true;
1642                 }
1643         }
1644
1645         // try NRZ clock detect.  it could be another type even if successful.
1646         clk = GetNrzClock("", false, false); //has the most false positives :(
1647         if (clk>0) {
1648                 if ( NRZrawDemod("0 0 1", false)  &&
1649                           preambleSearchEx(DemodBuffer,preamble,sizeof(preamble),&DemodBufferLen,&startIdx,false) &&
1650                           (DemodBufferLen == 32 || DemodBufferLen == 64) ) {
1651                         return true;
1652                 }
1653                 if ( NRZrawDemod("0 1 1", false)  &&
1654                           preambleSearchEx(DemodBuffer,preamble,sizeof(preamble),&DemodBufferLen,&startIdx,false) &&
1655                           (DemodBufferLen == 32 || DemodBufferLen == 64) ) {
1656                         return true;
1657                 }
1658         }
1659         return false;
1660 }
1661 //  does this need to be a callable command?
1662 int CmdT55xxDetectPage1(const char *Cmd){
1663         bool errors = false;
1664         bool useGB = false;
1665         bool usepwd = false;
1666         uint32_t password = 0;
1667         uint8_t cmdp = 0;
1668
1669         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
1670                 switch(param_getchar(Cmd, cmdp)) {
1671                 case 'h':
1672                 case 'H':
1673                         return usage_t55xx_detectP1();
1674                 case 'p':
1675                 case 'P':
1676                         password = param_get32ex(Cmd, cmdp+1, 0, 16);
1677                         usepwd = true;
1678                         cmdp += 2;
1679                         break;
1680                 case '1':
1681                         // use Graphbuffer data
1682                         useGB = true;
1683                         cmdp++;
1684                         break;
1685                 default:
1686                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
1687                         errors = true;
1688                         break;
1689                 }
1690         }
1691         if (errors) return usage_t55xx_detectP1();
1692
1693         if ( !useGB ) {
1694                 if ( !AquireData(T55x7_PAGE1, 1, usepwd, password) )
1695                         return false;
1696         }
1697         bool success = tryDetectP1(false);
1698         if (success) PrintAndLog("T55xx chip found!");
1699         return success;
1700 }
1701
1702 static command_t CommandTable[] = {
1703   {"help",      CmdHelp,           1, "This help"},
1704         {"bruteforce",CmdT55xxBruteForce,0, "<start password> <end password> [i <*.dic>] Simple bruteforce attack to find password"},
1705   {"config",    CmdT55xxSetConfig, 1, "Set/Get T55XX configuration (modulation, inverted, offset, rate)"},
1706   {"detect",    CmdT55xxDetect,    1, "[1] Try detecting the tag modulation from reading the configuration block."},
1707   {"p1detect",  CmdT55xxDetectPage1,1, "[1] Try detecting if this is a t55xx tag by reading page 1"},
1708   {"read",      CmdT55xxReadBlock, 0, "b <block> p [password] [o] [1] -- Read T55xx block data. Optional [p password], [override], [page1]"},
1709   {"resetread", CmdResetRead,      0, "Send Reset Cmd then lf read the stream to attempt to identify the start of it (needs a demod and/or plot after)"},
1710   {"write",     CmdT55xxWriteBlock,0, "b <block> d <data> p [password] [1] -- Write T55xx block data. Optional [p password], [page1]"},
1711   {"trace",     CmdT55xxReadTrace, 1, "[1] Show T55x7 traceability data (page 1/ blk 0-1)"},
1712   {"info",      CmdT55xxInfo,      1, "[1] Show T55x7 configuration data (page 0/ blk 0)"},
1713   {"dump",      CmdT55xxDump,      0, "[password] [o] Dump T55xx card block 0-7. Optional [password], [override]"},
1714   {"special",   special,           0, "Show block changes with 64 different offsets"},
1715   {"wakeup",    CmdT55xxWakeUp,    0, "Send AOR wakeup command"},
1716   {"wipe",      CmdT55xxWipe,      0, "[q] Wipe a T55xx tag and set defaults (will destroy any data on tag)"},
1717   {NULL, NULL, 0, NULL}
1718 };
1719
1720 int CmdLFT55XX(const char *Cmd) {
1721   CmdsParse(CommandTable, Cmd);
1722   return 0;
1723 }
1724
1725 int CmdHelp(const char *Cmd) {
1726   CmdsHelp(CommandTable);
1727   return 0;
1728 }