git.zerfleddert.de Git - proxmark3-svn/blob - armsrc/mifarecmd.c

   1 //-----------------------------------------------------------------------------
   2 // Merlok - June 2011, 2012
   3 // Gerhard de Koning Gans - May 2008
   4 // Hagen Fritsch - June 2010
   5 // Midnitesnake - Dec 2013
   6 // Andy Davies  - Apr 2014
   7 // Iceman - May 2014
   8 //
   9 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
  10 // at your option, any later version. See the LICENSE.txt file for the text of
  11 // the license.
  12 //-----------------------------------------------------------------------------
  13 // Routines to support ISO 14443 type A.
  14 //-----------------------------------------------------------------------------
  15
  16 #include "mifarecmd.h"
  17
  18 #include <stdint.h>
  19
  20 #include "proxmark3.h"
  21 #include "usb_cdc.h"
  22 #include "crapto1/crapto1.h"
  23 #include "iso14443a.h"
  24 #include "BigBuf.h"
  25 #include "mifareutil.h"
  26 #include "apps.h"
  27 #include "protocols.h"
  28 #include "util.h"
  29 #include "parity.h"
  30 #include "crc.h"
  31 #include "fpgaloader.h"
  32
  33 #define HARDNESTED_AUTHENTICATION_TIMEOUT 848           // card times out 1ms after wrong authentication (according to NXP documentation)
  34 #define HARDNESTED_PRE_AUTHENTICATION_LEADTIME 400      // some (non standard) cards need a pause after select before they are ready for first authentication
  35
  36 /*
  37 // the block number for the ISO14443-4 PCB
  38 static uint8_t pcb_blocknum = 0;
  39 // Deselect card by sending a s-block. the crc is precalced for speed
  40 static  uint8_t deselect_cmd[] = {0xc2,0xe0,0xb4};
  41
  42 static void OnSuccess(){
  43         pcb_blocknum = 0;
  44         ReaderTransmit(deselect_cmd, 3 , NULL);
  45         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
  46         LEDsoff();
  47 }
  48 */
  49
  50 static void OnError(uint8_t reason){
  51         // pcb_blocknum = 0;
  52         // ReaderTransmit(deselect_cmd, 3 , NULL);
  53         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
  54         LED_D_OFF();
  55         cmd_send(CMD_ACK,0,reason,0,0,0);
  56         LED_A_OFF();
  57 }
  58
  59 //-----------------------------------------------------------------------------
  60 // Select, Authenticate, Read a MIFARE tag.
  61 // read block
  62 //-----------------------------------------------------------------------------
  63 void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
  64 {
  65         LED_A_ON();
  66
  67         uint8_t blockNo = arg0;
  68         uint8_t keyType = arg1;
  69         uint64_t ui64Key = 0;
  70         ui64Key = bytes_to_num(datain, 6);
  71
  72         byte_t isOK = 0;
  73         byte_t dataoutbuf[16];
  74         uint8_t uid[10];
  75         uint32_t cuid;
  76         struct Crypto1State mpcs = {0, 0};
  77         struct Crypto1State *pcs;
  78         pcs = &mpcs;
  79
  80         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  81
  82         clear_trace();
  83
  84         while (true) {
  85                 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
  86                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
  87                         break;
  88                 };
  89
  90                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, NULL)) {
  91                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
  92                         break;
  93                 };
  94
  95                 if(mifare_classic_readblock(pcs, cuid, blockNo, dataoutbuf)) {
  96                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read block error");
  97                         break;
  98                 };
  99
 100                 if(mifare_classic_halt(pcs, cuid)) {
 101                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 102                         break;
 103                 };
 104
 105                 isOK = 1;
 106                 break;
 107         }
 108
 109         //  ----------------------------- crypto1 destroy
 110         crypto1_destroy(pcs);
 111
 112         if (MF_DBGLEVEL >= 2)   DbpString("READ BLOCK FINISHED");
 113
 114         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 115
 116         LED_B_ON();
 117         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
 118         LED_B_OFF();
 119
 120         LEDsoff();
 121 }
 122
 123 void MifareUC_Auth(uint8_t arg0, uint8_t *keybytes){
 124
 125         LED_A_ON();
 126         bool turnOffField = (arg0 == 1);
 127
 128         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 129
 130         if (!iso14443a_select_card(NULL, NULL, NULL, true, 0, true)) {
 131                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
 132                 OnError(0);
 133                 return;
 134         };
 135
 136         if (!mifare_ultra_auth(keybytes)){
 137                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed");
 138                 OnError(1);
 139                 return;
 140         }
 141
 142         if (turnOffField) {
 143                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 144                 LED_D_OFF();
 145         }
 146
 147         cmd_send(CMD_ACK,1,0,0,0,0);
 148         LED_A_OFF();
 149 }
 150
 151 // Arg0 = BlockNo,
 152 // Arg1 = UsePwd bool
 153 // datain = PWD bytes,
 154 void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 155 {
 156         LED_A_ON();
 157
 158         uint8_t blockNo = arg0;
 159         byte_t dataout[16] = {0x00};
 160         bool useKey = (arg1 == 1); //UL_C
 161         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 162
 163         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 164
 165         int len = iso14443a_select_card(NULL, NULL, NULL, true, 0, true);
 166         if(!len) {
 167                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);
 168                 OnError(1);
 169                 return;
 170         }
 171
 172         // UL-C authentication
 173         if (useKey) {
 174                 uint8_t key[16] = {0x00};
 175                 memcpy(key, datain, sizeof(key) );
 176
 177                 if ( !mifare_ultra_auth(key) ) {
 178                         OnError(1);
 179                         return;
 180                 }
 181         }
 182
 183         // UL-EV1 / NTAG authentication
 184         if (usePwd) {
 185                 uint8_t pwd[4] = {0x00};
 186                 memcpy(pwd, datain, 4);
 187                 uint8_t pack[4] = {0,0,0,0};
 188                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 189                         OnError(1);
 190                         return;
 191                 }
 192         }
 193
 194         if (mifare_ultra_readblock(blockNo, dataout)) {
 195                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block error");
 196                 OnError(2);
 197                 return;
 198         }
 199
 200         if (mifare_ultra_halt()) {
 201                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 202                 OnError(3);
 203                 return;
 204         }
 205
 206         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 207         LED_D_OFF();
 208
 209         cmd_send(CMD_ACK,1,0,0,dataout,16);
 210         LED_A_OFF();
 211 }
 212
 213 //-----------------------------------------------------------------------------
 214 // Select, Authenticate, Read a MIFARE tag.
 215 // read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
 216 //-----------------------------------------------------------------------------
 217 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 218 {
 219   // params
 220         uint8_t sectorNo = arg0;
 221         uint8_t keyType = arg1;
 222         uint64_t ui64Key = 0;
 223         ui64Key = bytes_to_num(datain, 6);
 224
 225         // variables
 226         byte_t isOK = 0;
 227         byte_t dataoutbuf[16 * 16];
 228         uint8_t uid[10];
 229         uint32_t cuid;
 230         struct Crypto1State mpcs = {0, 0};
 231         struct Crypto1State *pcs;
 232         pcs = &mpcs;
 233
 234         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 235
 236         clear_trace();
 237
 238         LED_A_ON();
 239         LED_B_OFF();
 240         LED_C_OFF();
 241
 242         isOK = 1;
 243         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 244                 isOK = 0;
 245                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 246         }
 247
 248
 249         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST, NULL)) {
 250                 isOK = 0;
 251                 if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 252         }
 253
 254         for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 255                 if(mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf + 16 * blockNo)) {
 256                         isOK = 0;
 257                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read sector %2d block %2d error", sectorNo, blockNo);
 258                         break;
 259                 }
 260         }
 261
 262         if(mifare_classic_halt(pcs, cuid)) {
 263                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 264         }
 265
 266         //  ----------------------------- crypto1 destroy
 267         crypto1_destroy(pcs);
 268
 269         if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
 270
 271         // Thats it...
 272         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 273
 274         LED_B_ON();
 275         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16*NumBlocksPerSector(sectorNo));
 276         LED_B_OFF();
 277
 278         LEDsoff();
 279 }
 280
 281 // arg0 = blockNo (start)
 282 // arg1 = Pages (number of blocks)
 283 // arg2 = useKey
 284 // datain = KEY bytes
 285 void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 286 {
 287         LED_A_ON();
 288         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 289
 290         // free eventually allocated BigBuf memory
 291         BigBuf_free();
 292
 293         // params
 294         uint8_t blockNo = arg0;
 295         uint16_t blocks = arg1;
 296         bool useKey = (arg2 == 1); //UL_C
 297         bool usePwd = (arg2 == 2); //UL_EV1/NTAG
 298         uint32_t countblocks = 0;
 299         uint8_t *dataout = BigBuf_malloc(CARD_MEMORY_SIZE);
 300         if (dataout == NULL){
 301                 Dbprintf("out of memory");
 302                 OnError(1);
 303                 return;
 304         }
 305
 306         int len = iso14443a_select_card(NULL, NULL, NULL, true, 0, true);
 307         if (!len) {
 308                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%d)",len);
 309                 OnError(1);
 310                 return;
 311         }
 312
 313         // UL-C authentication
 314         if (useKey) {
 315                 uint8_t key[16] = {0x00};
 316                 memcpy(key, datain, sizeof(key) );
 317
 318                 if ( !mifare_ultra_auth(key) ) {
 319                         OnError(1);
 320                         return;
 321                 }
 322         }
 323
 324         // UL-EV1 / NTAG authentication
 325         if (usePwd) {
 326                 uint8_t pwd[4] = {0x00};
 327                 memcpy(pwd, datain, sizeof(pwd));
 328                 uint8_t pack[4] = {0,0,0,0};
 329
 330                 if (!mifare_ul_ev1_auth(pwd, pack)){
 331                         OnError(1);
 332                         return;
 333                 }
 334         }
 335
 336         for (int i = 0; i < blocks; i++){
 337                 if ((i*4) + 4 >= CARD_MEMORY_SIZE) {
 338                         Dbprintf("Data exceeds buffer!!");
 339                         break;
 340                 }
 341
 342                 len = mifare_ultra_readblock(blockNo + i, dataout + 4 * i);
 343
 344                 if (len) {
 345                         if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
 346                         // if no blocks read - error out
 347                         if (i==0){
 348                                 OnError(2);
 349                                 return;
 350                         } else {
 351                                 //stop at last successful read block and return what we got
 352                                 break;
 353                         }
 354                 } else {
 355                         countblocks++;
 356                 }
 357         }
 358
 359         len = mifare_ultra_halt();
 360         if (len) {
 361                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 362                 OnError(3);
 363                 return;
 364         }
 365
 366         if (MF_DBGLEVEL >= MF_DBG_DEBUG) Dbprintf("Blocks read %d", countblocks);
 367
 368         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 369         LED_D_OFF();
 370
 371         cmd_send(CMD_ACK, 1, countblocks*4, BigBuf_max_traceLen(), 0, 0);
 372
 373         BigBuf_free();
 374         LED_A_OFF();
 375 }
 376
 377 //-----------------------------------------------------------------------------
 378 // Select, Authenticate, Write a MIFARE tag.
 379 // read block
 380 //-----------------------------------------------------------------------------
 381 void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 382 {
 383         // params
 384         uint8_t blockNo = arg0;
 385         uint8_t keyType = arg1;
 386         uint64_t ui64Key = 0;
 387         byte_t blockdata[16];
 388
 389         ui64Key = bytes_to_num(datain, 6);
 390         memcpy(blockdata, datain + 10, 16);
 391
 392         // variables
 393         byte_t isOK = 0;
 394         uint8_t uid[10];
 395         uint32_t cuid;
 396         struct Crypto1State mpcs = {0, 0};
 397         struct Crypto1State *pcs;
 398         pcs = &mpcs;
 399
 400         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 401
 402         clear_trace();
 403
 404         LED_A_ON();
 405         LED_B_OFF();
 406         LED_C_OFF();
 407
 408         while (true) {
 409                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 410                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 411                         break;
 412                 };
 413
 414                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, NULL)) {
 415                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 416                         break;
 417                 };
 418
 419                 if(mifare_classic_writeblock(pcs, cuid, blockNo, blockdata)) {
 420                         if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 421                         break;
 422                 };
 423
 424                 if(mifare_classic_halt(pcs, cuid)) {
 425                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 426                         break;
 427                 };
 428
 429                 isOK = 1;
 430                 break;
 431         }
 432
 433         //  ----------------------------- crypto1 destroy
 434         crypto1_destroy(pcs);
 435
 436         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 437
 438         // Thats it...
 439         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 440
 441         LED_B_ON();
 442         cmd_send(CMD_ACK,isOK,0,0,0,0);
 443         LED_B_OFF();
 444
 445
 446         LEDsoff();
 447 }
 448
 449 /* // Command not needed but left for future testing
 450 void MifareUWriteBlockCompat(uint8_t arg0, uint8_t *datain)
 451 {
 452         uint8_t blockNo = arg0;
 453         byte_t blockdata[16] = {0x00};
 454
 455         memcpy(blockdata, datain, 16);
 456
 457         uint8_t uid[10] = {0x00};
 458
 459         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 460
 461         clear_trace();
 462         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 463
 464         if(!iso14443a_select_card(uid, NULL, NULL, true, 0)) {
 465                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 466                 OnError(0);
 467                 return;
 468         };
 469
 470         if(mifare_ultra_writeblock_compat(blockNo, blockdata)) {
 471                 if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 472                 OnError(0);
 473                 return; };
 474
 475         if(mifare_ultra_halt()) {
 476                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 477                 OnError(0);
 478                 return;
 479         };
 480
 481         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 482
 483         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 484
 485         cmd_send(CMD_ACK,1,0,0,0,0);
 486         LEDsoff();
 487 }
 488 */
 489
 490 // Arg0   : Block to write to.
 491 // Arg1   : 0 = use no authentication.
 492 //          1 = use 0x1A authentication.
 493 //          2 = use 0x1B authentication.
 494 // datain : 4 first bytes is data to be written.
 495 //        : 4/16 next bytes is authentication key.
 496 void MifareUWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 497 {
 498         uint8_t blockNo = arg0;
 499         bool useKey = (arg1 == 1); //UL_C
 500         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 501         byte_t blockdata[4] = {0x00};
 502
 503         memcpy(blockdata, datain,4);
 504
 505         LEDsoff();
 506         LED_A_ON();
 507         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 508
 509         clear_trace();
 510
 511         if(!iso14443a_select_card(NULL, NULL, NULL, true, 0, true)) {
 512                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 513                 OnError(0);
 514                 return;
 515         };
 516
 517         // UL-C authentication
 518         if ( useKey ) {
 519                 uint8_t key[16] = {0x00};
 520                 memcpy(key, datain+4, sizeof(key) );
 521
 522                 if ( !mifare_ultra_auth(key) ) {
 523                         OnError(1);
 524                         return;
 525                 }
 526         }
 527
 528         // UL-EV1 / NTAG authentication
 529         if (usePwd) {
 530                 uint8_t pwd[4] = {0x00};
 531                 memcpy(pwd, datain+4, 4);
 532                 uint8_t pack[4] = {0,0,0,0};
 533                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 534                         OnError(1);
 535                         return;
 536                 }
 537         }
 538
 539         if(mifare_ultra_writeblock(blockNo, blockdata)) {
 540                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 541                 OnError(0);
 542                 return;
 543         };
 544
 545         if(mifare_ultra_halt()) {
 546                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 547                 OnError(0);
 548                 return;
 549         };
 550
 551         if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
 552
 553         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 554
 555         cmd_send(CMD_ACK,1,0,0,0,0);
 556         LEDsoff();
 557 }
 558
 559 void MifareUSetPwd(uint8_t arg0, uint8_t *datain){
 560
 561         uint8_t pwd[16] = {0x00};
 562         byte_t blockdata[4] = {0x00};
 563
 564         memcpy(pwd, datain, 16);
 565
 566         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 567         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 568
 569         clear_trace();
 570
 571         if(!iso14443a_select_card(NULL, NULL, NULL, true, 0, true)) {
 572                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 573                 OnError(0);
 574                 return;
 575         };
 576
 577         blockdata[0] = pwd[7];
 578         blockdata[1] = pwd[6];
 579         blockdata[2] = pwd[5];
 580         blockdata[3] = pwd[4];
 581         if(mifare_ultra_writeblock( 44, blockdata)) {
 582                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 583                 OnError(44);
 584                 return;
 585         };
 586
 587         blockdata[0] = pwd[3];
 588         blockdata[1] = pwd[2];
 589         blockdata[2] = pwd[1];
 590         blockdata[3] = pwd[0];
 591         if(mifare_ultra_writeblock( 45, blockdata)) {
 592                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 593                 OnError(45);
 594                 return;
 595         };
 596
 597         blockdata[0] = pwd[15];
 598         blockdata[1] = pwd[14];
 599         blockdata[2] = pwd[13];
 600         blockdata[3] = pwd[12];
 601         if(mifare_ultra_writeblock( 46, blockdata)) {
 602                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 603                 OnError(46);
 604                 return;
 605         };
 606
 607         blockdata[0] = pwd[11];
 608         blockdata[1] = pwd[10];
 609         blockdata[2] = pwd[9];
 610         blockdata[3] = pwd[8];
 611         if(mifare_ultra_writeblock( 47, blockdata)) {
 612                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 613                 OnError(47);
 614                 return;
 615         };
 616
 617         if(mifare_ultra_halt()) {
 618                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 619                 OnError(0);
 620                 return;
 621         };
 622
 623         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 624
 625         cmd_send(CMD_ACK,1,0,0,0,0);
 626         LEDsoff();
 627 }
 628
 629 // Return 1 if the nonce is invalid else return 0
 630 int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_t *parity) {
 631         return ((oddparity8((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity8((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
 632         (oddparity8((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity8((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
 633         (oddparity8((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity8((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
 634 }
 635
 636
 637 //-----------------------------------------------------------------------------
 638 // acquire encrypted nonces in order to perform the attack described in
 639 // Carlo Meijer, Roel Verdult, "Ciphertext-only Cryptanalysis on Hardened
 640 // Mifare Classic Cards" in Proceedings of the 22nd ACM SIGSAC Conference on
 641 // Computer and Communications Security, 2015
 642 //-----------------------------------------------------------------------------
 643 void MifareAcquireEncryptedNonces(uint32_t arg0, uint32_t arg1, uint32_t flags, uint8_t *datain)
 644 {
 645         uint64_t ui64Key = 0;
 646         uint8_t uid[10];
 647         uint32_t cuid;
 648         uint8_t cascade_levels = 0;
 649         struct Crypto1State mpcs = {0, 0};
 650         struct Crypto1State *pcs;
 651         pcs = &mpcs;
 652         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 653         int16_t isOK = 0;
 654         uint8_t par_enc[1];
 655         uint8_t nt_par_enc = 0;
 656         uint8_t buf[USB_CMD_DATA_SIZE];
 657         uint32_t timeout;
 658
 659         uint8_t blockNo = arg0 & 0xff;
 660         uint8_t keyType = (arg0 >> 8) & 0xff;
 661         uint8_t targetBlockNo = arg1 & 0xff;
 662         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 663         ui64Key = bytes_to_num(datain, 6);
 664         bool initialize = flags & 0x0001;
 665         bool slow = flags & 0x0002;
 666         bool field_off = flags & 0x0004;
 667
 668         LED_A_ON();
 669         LED_C_OFF();
 670
 671         if (initialize) {
 672                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 673                 clear_trace();
 674                 set_tracing(true);
 675         }
 676
 677         LED_C_ON();
 678
 679         uint16_t num_nonces = 0;
 680         bool have_uid = false;
 681         for (uint16_t i = 0; i <= USB_CMD_DATA_SIZE - 9; ) {
 682
 683                 // Test if the action was cancelled
 684                 if(BUTTON_PRESS()) {
 685                         isOK = 2;
 686                         field_off = true;
 687                         break;
 688                 }
 689
 690                 if (!have_uid) { // need a full select cycle to get the uid first
 691                         iso14a_card_select_t card_info;
 692                         if(!iso14443a_select_card(uid, &card_info, &cuid, true, 0, true)) {
 693                                 if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Can't select card (ALL)");
 694                                 continue;
 695                         }
 696                         switch (card_info.uidlen) {
 697                                 case 4 : cascade_levels = 1; break;
 698                                 case 7 : cascade_levels = 2; break;
 699                                 case 10: cascade_levels = 3; break;
 700                                 default: break;
 701                         }
 702                         have_uid = true;
 703                 } else { // no need for anticollision. We can directly select the card
 704                         if(!iso14443a_select_card(uid, NULL, NULL, false, cascade_levels, true)) {
 705                                 if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Can't select card (UID)");
 706                                 continue;
 707                         }
 708                 }
 709
 710                 if (slow) {
 711                         timeout = GetCountSspClk() + HARDNESTED_PRE_AUTHENTICATION_LEADTIME;
 712                         while(GetCountSspClk() < timeout);
 713                 }
 714
 715                 uint32_t nt1;
 716                 if (mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, NULL, NULL)) {
 717                         if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Auth1 error");
 718                         continue;
 719                 }
 720
 721                 // nested authentication
 722                 uint16_t len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par_enc, NULL);
 723                 if (len != 4) {
 724                         if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Auth2 error len=%d", len);
 725                         continue;
 726                 }
 727
 728                 // send an incomplete dummy response in order to trigger the card's authentication failure timeout
 729                 uint8_t dummy_answer[1] = {0};
 730                 ReaderTransmit(dummy_answer, 1, NULL);
 731
 732                 timeout = GetCountSspClk() + HARDNESTED_AUTHENTICATION_TIMEOUT;
 733
 734                 num_nonces++;
 735                 if (num_nonces % 2) {
 736                         memcpy(buf+i, receivedAnswer, 4);
 737                         nt_par_enc = par_enc[0] & 0xf0;
 738                 } else {
 739                         nt_par_enc |= par_enc[0] >> 4;
 740                         memcpy(buf+i+4, receivedAnswer, 4);
 741                         memcpy(buf+i+8, &nt_par_enc, 1);
 742                         i += 9;
 743                 }
 744
 745                 // wait for the card to become ready again
 746                 while(GetCountSspClk() < timeout);
 747
 748         }
 749
 750         LED_C_OFF();
 751
 752         crypto1_destroy(pcs);
 753
 754         if (field_off) {
 755                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 756                 LEDsoff();
 757         }
 758
 759         LED_B_ON();
 760         cmd_send(CMD_ACK, isOK, cuid, num_nonces, buf, sizeof(buf));
 761         LED_B_OFF();
 762
 763         if (MF_DBGLEVEL >= 3)   DbpString("AcquireEncryptedNonces finished");
 764
 765 }
 766
 767
 768 //-----------------------------------------------------------------------------
 769 // MIFARE nested authentication.
 770 //
 771 //-----------------------------------------------------------------------------
 772 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain) {
 773
 774         uint8_t blockNo = arg0 & 0xff;
 775         uint8_t keyType = (arg0 >> 8) & 0xff;
 776         uint8_t targetBlockNo = arg1 & 0xff;
 777         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 778         uint64_t ui64Key = 0;
 779
 780         ui64Key = bytes_to_num(datain, 6);
 781
 782         uint16_t rtr, i, j, len;
 783         uint16_t davg;
 784         static uint16_t dmin, dmax;
 785         uint8_t uid[10];
 786         uint32_t cuid, nt1, nt2, nttmp, nttest, ks1;
 787         uint8_t par[1];
 788         uint32_t target_nt[2], target_ks[2];
 789         uint8_t target_nt_duplicate_count = 0;
 790
 791         uint8_t par_array[4];
 792         uint16_t ncount = 0;
 793         struct Crypto1State mpcs = {0, 0};
 794         struct Crypto1State *pcs;
 795         pcs = &mpcs;
 796         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 797
 798         uint32_t auth1_time, auth2_time, authentication_timeout = 0;
 799         static uint16_t delta_time;
 800
 801         LED_A_ON();
 802         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 803
 804         // free eventually allocated BigBuf memory
 805         BigBuf_free();
 806
 807         if (calibrate) clear_trace();
 808         set_tracing(true);
 809
 810         // statistics on nonce distance
 811         int16_t isOK = 0;
 812         #define NESTED_MAX_TRIES 12
 813         uint16_t unsuccessfull_tries = 0;
 814         if (calibrate) {    // for first call only. Otherwise reuse previous calibration
 815                 LED_B_ON();
 816                 WDT_HIT();
 817
 818                 davg = dmax = 0;
 819                 dmin = 2000;
 820                 delta_time = 0;
 821
 822                 for (rtr = 0; rtr < 17; rtr++) {
 823
 824                         // prepare next select. No need to power down the card.
 825                         if (mifare_classic_halt(pcs, cuid)) {
 826                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 827                                 rtr--;
 828                                 continue;
 829                         }
 830
 831                         // Test if the action was cancelled
 832                         if (BUTTON_PRESS()) {
 833                                 isOK = -2;
 834                                 break;
 835                         }
 836
 837                         if (!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 838                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 839                                 rtr--;
 840                                 continue;
 841                         };
 842
 843                         auth1_time = 0;
 844                         if (mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time, NULL)) {
 845                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 846                                 rtr--;
 847                                 continue;
 848                         };
 849
 850                         if (delta_time) {
 851                                 auth2_time = auth1_time + delta_time;
 852                         } else {
 853                                 auth2_time = 0;
 854                         }
 855                         if (mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time, NULL)) {
 856                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 857                                 rtr--;
 858                                 continue;
 859                         };
 860
 861                         nttmp = prng_successor(nt1, 100);               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 862                         for (i = 101; i < 1200; i++) {
 863                                 nttmp = prng_successor(nttmp, 1);
 864                                 if (nttmp == nt2) break;
 865                         }
 866
 867                         if (i != 1200) {
 868                                 if (rtr != 0) {
 869                                         davg += i;
 870                                         dmin = MIN(dmin, i);
 871                                         dmax = MAX(dmax, i);
 872                                 }
 873                                 else {
 874                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 875                                 }
 876                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 877                         } else {
 878                                 unsuccessfull_tries++;
 879                                 if (unsuccessfull_tries > NESTED_MAX_TRIES) {   // card isn't vulnerable to nested attack (random numbers are not predictable)
 880                                         isOK = -3;
 881                                 }
 882                         }
 883                 }
 884
 885                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 886
 887                 if (MF_DBGLEVEL >= 3) Dbprintf("rtr=%d isOK=%d min=%d max=%d avg=%d, delta_time=%d", rtr, isOK, dmin, dmax, davg, delta_time);
 888
 889                 dmin = davg - 2;
 890                 dmax = davg + 2;
 891
 892                 LED_B_OFF();
 893
 894         }
 895         //  -------------------------------------------------------------------------------------------------
 896
 897         LED_C_ON();
 898
 899         //  get crypted nonces for target sector
 900         for (i=0; i < 2 && !isOK; i++) { // look for exactly two different nonces
 901
 902                 target_nt[i] = 0;
 903                 while (target_nt[i] == 0 && !isOK) { // continue until we have an unambiguous nonce
 904
 905                         // prepare next select. No need to power down the card.
 906                         if(mifare_classic_halt(pcs, cuid)) {
 907                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 908                                 continue;
 909                         }
 910
 911                         // break out of the loop on button press
 912                         if (BUTTON_PRESS()) {
 913                                 isOK = -2;
 914                                 break;
 915                         }
 916
 917                         if (!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 918                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 919                                 continue;
 920                         }
 921
 922                         auth1_time = 0;
 923                         authentication_timeout = 0;
 924                         if (mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time, &authentication_timeout)) {
 925                                 if (MF_DBGLEVEL >= 1)  Dbprintf("Nested: Auth1 error");
 926                                 continue;
 927                         }
 928
 929                         // nested authentication
 930                         auth2_time = auth1_time + delta_time;
 931                         len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
 932                         if (len != 4) {
 933                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 934                                 continue;
 935                         }
 936
 937                         nt2 = bytes_to_num(receivedAnswer, 4);
 938                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
 939
 940                         // Parity validity check
 941                         for (j = 0; j < 4; j++) {
 942                                 par_array[j] = (oddparity8(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
 943                         }
 944
 945                         ncount = 0;
 946                         nttest = prng_successor(nt1, dmin - 1);
 947                         for (j = dmin; j < dmax + 1; j++) {
 948                                 nttest = prng_successor(nttest, 1);
 949                                 ks1 = nt2 ^ nttest;
 950
 951                                 if (valid_nonce(nttest, nt2, ks1, par_array)){
 952                                         if (ncount > 0) {       // we are only interested in disambiguous nonces, try again
 953                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
 954                                                 target_nt[i] = 0;
 955                                                 break;
 956                                         }
 957                                         target_nt[i] = nttest;
 958                                         target_ks[i] = ks1;
 959                                         ncount++;
 960                                         if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
 961                                                 if( ++target_nt_duplicate_count >= NESTED_MAX_TRIES ) { // unable to get a 2nd nonce after NESTED_MAX_TRIES tries, probably a fixed nonce
 962                                                         if (MF_DBGLEVEL >= 2) Dbprintf("Nonce#2: cannot get nonce that != nonce#1, continuing anyway with single nonce! ntdist=%d", j);
 963                                                         break;
 964                                                 }
 965
 966                                                 target_nt[1] = 0;
 967                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
 968                                                 break;
 969                                         }
 970                                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 971                                 }
 972                         }
 973                         if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 974                 }
 975         }
 976
 977         LED_C_OFF();
 978
 979         //  ----------------------------- crypto1 destroy
 980         crypto1_destroy(pcs);
 981
 982         uint8_t buf[4 + 4 * 4 + 4];
 983         memcpy(buf, &cuid, 4);
 984         memcpy(buf+4, &target_nt[0], 4);
 985         memcpy(buf+8, &target_ks[0], 4);
 986         memcpy(buf+12, &target_nt[1], 4);
 987         memcpy(buf+16, &target_ks[1], 4);
 988         memcpy(buf+20, &authentication_timeout, 4);
 989
 990         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 991
 992         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 993
 994         LED_B_ON();
 995         cmd_send(CMD_ACK, isOK, 0, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 996         LED_B_OFF();
 997
 998         LEDsoff();
 999 }
1000
1001
1002 //-----------------------------------------------------------------------------
1003 // MIFARE check keys. key count up to 85.
1004 //
1005 //-----------------------------------------------------------------------------
1006 void MifareChkKeys(uint16_t arg0, uint32_t arg1, uint8_t arg2, uint8_t *datain) {
1007
1008         uint8_t blockNo = arg0 & 0xff;
1009         uint8_t keyType = arg0 >> 8;
1010         bool clearTrace = arg1 & 0x01;
1011         bool multisectorCheck = arg1 & 0x02;
1012         bool init = arg1 & 0x04;
1013         bool drop_field = arg1 & 0x08;
1014         uint32_t auth_timeout = arg1 >> 16;
1015         uint8_t keyCount = arg2;
1016
1017         LED_A_ON();
1018
1019         if (init) {
1020                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1021         }
1022
1023         if (clearTrace) {
1024                 clear_trace();
1025         }
1026         set_tracing(true);
1027
1028         // clear debug level. We are expecting lots of authentication failures...
1029         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
1030         MF_DBGLEVEL = MF_DBG_NONE;
1031
1032         int res = 0;
1033         if (multisectorCheck) {
1034                 TKeyIndex keyIndex = {{0}};
1035                 uint8_t sectorCnt = blockNo;
1036                 res = MifareMultisectorChk(datain, keyCount, sectorCnt, keyType, &auth_timeout, OLD_MF_DBGLEVEL, &keyIndex);
1037                 if (res >= 0) {
1038                         cmd_send(CMD_ACK, 1, res, 0, keyIndex, 80);
1039                 } else {
1040                         cmd_send(CMD_ACK, 0, res, 0, NULL, 0);
1041                 }
1042         } else {
1043                 res = MifareChkBlockKeys(datain, keyCount, blockNo, keyType, &auth_timeout, OLD_MF_DBGLEVEL);
1044                 if (res > 0) {
1045                         cmd_send(CMD_ACK, 1, res, 0, datain + (res - 1) * 6, 6);
1046                 } else {
1047                         cmd_send(CMD_ACK, 0, res, 0, NULL, 0);
1048                 }
1049         }
1050
1051         if (drop_field || res != 0) {
1052                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1053                 LED_D_OFF();
1054         }
1055
1056         // restore debug level
1057         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
1058
1059         LED_A_OFF();
1060 }
1061
1062
1063 //-----------------------------------------------------------------------------
1064 // MIFARE Personalize UID. Only for Mifare Classic EV1 7Byte UID
1065 //-----------------------------------------------------------------------------
1066 void MifarePersonalizeUID(uint8_t keyType, uint8_t perso_option, uint8_t *data) {
1067
1068         uint8_t uid[10];
1069         uint32_t cuid;
1070         struct Crypto1State mpcs = {0, 0};
1071         struct Crypto1State *pcs;
1072         pcs = &mpcs;
1073
1074         LED_A_ON();
1075         clear_trace();
1076
1077         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1078
1079         bool isOK = false;
1080         while (true) {
1081                 if (!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
1082                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1083                         break;
1084                 }
1085
1086                 uint8_t block_number = 0;
1087                 uint64_t key = bytes_to_num(data, 6);
1088                 if (mifare_classic_auth(pcs, cuid, block_number, keyType, key, AUTH_FIRST, NULL)) {
1089                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
1090                         break;
1091                 }
1092
1093                 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1094                 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1095                 int len = mifare_sendcmd_short(pcs, true, MIFARE_EV1_PERSONAL_UID, perso_option, receivedAnswer, receivedAnswerPar, NULL);
1096                 if (len != 1 || receivedAnswer[0] != CARD_ACK) {
1097                         if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
1098                         break;;
1099                 }
1100                 isOK = true;
1101                 break;
1102         }
1103
1104         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1105         LED_D_OFF();
1106
1107         crypto1_destroy(pcs);
1108
1109         if (MF_DBGLEVEL >= 2)   DbpString("PERSONALIZE UID FINISHED");
1110
1111         cmd_send(CMD_ACK, isOK, 0, 0, NULL, 0);
1112
1113         LED_A_OFF();
1114 }
1115
1116 //-----------------------------------------------------------------------------
1117 // MIFARE commands set debug level
1118 //
1119 //-----------------------------------------------------------------------------
1120 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1121         MF_DBGLEVEL = arg0;
1122         Dbprintf("Debug level: %d", MF_DBGLEVEL);
1123 }
1124
1125 //-----------------------------------------------------------------------------
1126 // Work with emulator memory
1127 //
1128 // Note: we call FpgaDownloadAndGo(FPGA_BITSTREAM_HF) here although FPGA is not
1129 // involved in dealing with emulator memory. But if it is called later, it might
1130 // destroy the Emulator Memory.
1131 //-----------------------------------------------------------------------------
1132
1133 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1134         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1135         emlClearMem();
1136 }
1137
1138 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1139         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1140         emlSetMem(datain, arg0, arg1); // data, block num, blocks count
1141 }
1142
1143 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1144         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1145         byte_t buf[USB_CMD_DATA_SIZE];
1146         emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
1147
1148         LED_B_ON();
1149         cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
1150         LED_B_OFF();
1151 }
1152
1153 //-----------------------------------------------------------------------------
1154 // Load a card into the emulator memory
1155 //
1156 //-----------------------------------------------------------------------------
1157 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1158         uint8_t numSectors = arg0;
1159         uint8_t keyType = arg1;
1160         uint64_t ui64Key = 0;
1161         uint32_t cuid;
1162         struct Crypto1State mpcs = {0, 0};
1163         struct Crypto1State *pcs;
1164         pcs = &mpcs;
1165
1166         // variables
1167         byte_t dataoutbuf[16];
1168         byte_t dataoutbuf2[16];
1169         uint8_t uid[10];
1170
1171         LED_A_ON();
1172         LED_B_OFF();
1173         LED_C_OFF();
1174         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1175
1176         clear_trace();
1177         set_tracing(false);
1178
1179         bool isOK = true;
1180
1181         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
1182                 isOK = false;
1183                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1184         }
1185
1186         for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
1187                 ui64Key = emlGetKey(sectorNo, keyType);
1188                 if (sectorNo == 0){
1189                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST, NULL)) {
1190                                 isOK = false;
1191                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth error", sectorNo);
1192                                 break;
1193                         }
1194                 } else {
1195                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED, NULL)) {
1196                                 isOK = false;
1197                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
1198                                 break;
1199                         }
1200                 }
1201
1202                 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
1203                         if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
1204                                 isOK = false;
1205                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
1206                                 break;
1207                         };
1208                         if (isOK) {
1209                                 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
1210                                         emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
1211                                 } else {    // sector trailer, keep the keys, set only the AC
1212                                         emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
1213                                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
1214                                         emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
1215                                 }
1216                         }
1217                 }
1218
1219         }
1220
1221         if(mifare_classic_halt(pcs, cuid)) {
1222                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1223         };
1224
1225         //  ----------------------------- crypto1 destroy
1226         crypto1_destroy(pcs);
1227
1228         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1229         LEDsoff();
1230
1231         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
1232
1233 }
1234
1235
1236 //-----------------------------------------------------------------------------
1237 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
1238 //
1239 //-----------------------------------------------------------------------------
1240
1241 static bool isBlockTrailer(int blockN) {
1242         if (blockN >= 0 && blockN < 128) {
1243                 return ((blockN & 0x03) == 0x03);
1244         }
1245         if (blockN >= 128 && blockN <= 256) {
1246                 return ((blockN & 0x0F) == 0x0F);
1247         }
1248         return false;
1249 }
1250
1251 void MifareCWipe(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1252         // var
1253         byte_t isOK = 0;
1254         uint32_t numBlocks = arg0;
1255         // cmdParams:
1256         // bit 0 - wipe gen1a
1257         // bit 1 - fill card with default data
1258         // bit 2 - gen1a = 0, gen1b = 1
1259         uint8_t cmdParams = arg1;
1260         bool needWipe = cmdParams & 0x01;
1261         bool needFill = cmdParams & 0x02;
1262         bool gen1b = cmdParams & 0x04;
1263
1264         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1265         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1266
1267         uint8_t block0[16] = {0x01, 0x02, 0x03, 0x04, 0x04, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xBE, 0xAF};
1268         uint8_t block1[16] = {0x00};
1269         uint8_t blockK[16] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x08, 0x77, 0x8F, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
1270         uint8_t d_block[18] = {0x00};
1271
1272         // card commands
1273         uint8_t wupC1[]       = { 0x40 };
1274         uint8_t wupC2[]       = { 0x43 };
1275         uint8_t wipeC[]       = { 0x41 };
1276
1277         // iso14443 setup
1278         LED_A_ON();
1279         LED_B_OFF();
1280         LED_C_OFF();
1281         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1282
1283         // tracing
1284         clear_trace();
1285         set_tracing(true);
1286
1287         while (true){
1288                 // wipe
1289                 if (needWipe){
1290                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1291                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1292                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1293                                 break;
1294                         };
1295
1296                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1297                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1298                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1299                                 break;
1300                         };
1301
1302                         if(mifare_classic_halt(NULL, 0)) {
1303                                 if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1304                         };
1305                 };
1306
1307                 // put default data
1308                 if (needFill){
1309                         // select commands
1310                         ReaderTransmitBitsPar(wupC1, 7, 0, NULL);
1311
1312                         // gen1b magic tag : do no issue wupC2 and don't expect CARD_ACK response after SELECT_UID (after getting UID from chip in 'hf mf csetuid' command)
1313                         if (!gen1b) {
1314
1315                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1316                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1317                                         break;
1318                                 };
1319
1320                                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1321                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1322                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1323                                         break;
1324                                 };
1325                         }
1326
1327                         // send blocks command
1328                         for (int blockNo = 0; blockNo < numBlocks; blockNo++) {
1329                                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != CARD_ACK)) {
1330                                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1331                                         break;
1332                                 };
1333
1334                                 // check type of block and add crc
1335                                 if (!isBlockTrailer(blockNo)){
1336                                         memcpy(d_block, block1, 16);
1337                                 } else {
1338                                         memcpy(d_block, blockK, 16);
1339                                 }
1340                                 if (blockNo == 0) {
1341                                         memcpy(d_block, block0, 16);
1342                                 }
1343                                 AppendCrc14443a(d_block, 16);
1344
1345                                 // send write command
1346                                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1347                                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != CARD_ACK)) {
1348                                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1349                                         break;
1350                                 };
1351                         }
1352
1353                         // halt
1354                         // do no issue halt command for gen1b
1355                         if (!gen1b) {
1356                                 if (mifare_classic_halt(NULL, 0)) {
1357                                         if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1358                                                 break;
1359                                 }
1360                         }
1361                 }
1362                 break;
1363         }
1364
1365         // reset fpga
1366         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1367
1368         // send USB response
1369         LED_B_ON();
1370         cmd_send(CMD_ACK,isOK,0,0,NULL,0);
1371         LED_B_OFF();
1372
1373         LEDsoff();
1374
1375         return;
1376 }
1377
1378 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1379
1380   // params
1381         uint8_t needWipe = arg0;
1382         // bit 0 - need get UID
1383         // bit 1 - need wupC
1384         // bit 2 - need HALT after sequence
1385         // bit 3 - need init FPGA and field before sequence
1386         // bit 4 - need reset FPGA and LED
1387         // bit 6 - gen1b backdoor type
1388         uint8_t workFlags = arg1;
1389         uint8_t blockNo = arg2;
1390
1391         // card commands
1392         uint8_t wupC1[]       = { 0x40 };
1393         uint8_t wupC2[]       = { 0x43 };
1394         uint8_t wipeC[]       = { 0x41 };
1395
1396         // variables
1397         byte_t isOK = 0;
1398         uint8_t uid[10] = {0x00};
1399         uint8_t d_block[18] = {0x00};
1400         uint32_t cuid;
1401
1402         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1403         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1404
1405         // reset FPGA and LED
1406         if (workFlags & 0x08) {
1407                 LED_A_ON();
1408                 LED_B_OFF();
1409                 LED_C_OFF();
1410                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1411
1412                 clear_trace();
1413                 set_tracing(true);
1414         }
1415
1416         while (true) {
1417
1418                 // get UID from chip
1419                 if (workFlags & 0x01) {
1420                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
1421                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1422                                 // Continue, if we set wrong UID or wrong UID checksum or some ATQA or SAK we will can't select card. But we need to write block 0 to make card work.
1423                                 //break;
1424                                 };
1425
1426                                 if(mifare_classic_halt(NULL, cuid)) {
1427                                         if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1428                                         // Continue, some magic tags misbehavies and send an answer to it.
1429                                         // break;
1430                                 };
1431                 };
1432
1433                 // reset chip
1434                 // Wipe command don't work with gen1b
1435                 if (needWipe && !(workFlags & 0x40)){
1436                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1437                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1438                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1439                                 break;
1440                         };
1441
1442                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1443                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1444                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1445                                 break;
1446                         };
1447
1448                         if(mifare_classic_halt(NULL, 0)) {
1449                                 if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1450                                 // Continue, some magic tags misbehavies and send an answer to it.
1451                                                         // break;
1452                         };
1453                 };
1454
1455                 // write block
1456                 if (workFlags & 0x02) {
1457                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1458
1459                         // gen1b magic tag : do no issue wupC2 and don't expect CARD_ACK response after SELECT_UID (after getting UID from chip in 'hf mf csetuid' command)
1460                         if (!(workFlags & 0x40)) {
1461
1462                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1463                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1464                                         break;
1465                                 };
1466
1467                                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1468                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1469                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1470                                         break;
1471                                 };
1472                         }
1473                 }
1474
1475                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != CARD_ACK)) {
1476                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1477                         break;
1478                 };
1479
1480                 memcpy(d_block, datain, 16);
1481                 AppendCrc14443a(d_block, 16);
1482
1483                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1484                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != CARD_ACK)) {
1485                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1486                         break;
1487                 };
1488
1489                 if (workFlags & 0x04) {
1490                         // do no issue halt command for gen1b magic tag (#db# halt error. response len: 1)
1491                         if (!(workFlags & 0x40)) {
1492                                 if (mifare_classic_halt(NULL, 0)) {
1493                                         if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1494                                         // Continue, some magic tags misbehavies and send an answer to it.
1495                                         // break;
1496                                 }
1497                         }
1498                 }
1499
1500                 isOK = 1;
1501                 break;
1502         }
1503
1504         if ((workFlags & 0x10) || (!isOK)) {
1505                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1506         }
1507
1508         LED_B_ON();
1509         cmd_send(CMD_ACK,isOK,0,0,uid,4);
1510         LED_B_OFF();
1511
1512         LEDsoff();
1513 }
1514
1515
1516 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1517
1518         // params
1519         // bit 1 - need wupC
1520         // bit 2 - need HALT after sequence
1521         // bit 3 - need init FPGA and field before sequence
1522         // bit 4 - need reset FPGA and LED
1523         // bit 5 - need to set datain instead of issuing USB reply (called via ARM for StandAloneMode14a)
1524         // bit 6 - gen1b backdoor type
1525         uint8_t workFlags = arg0;
1526         uint8_t blockNo = arg2;
1527
1528         // card commands
1529         uint8_t wupC1[]       = { 0x40 };
1530         uint8_t wupC2[]       = { 0x43 };
1531
1532         // variables
1533         byte_t isOK = 0;
1534         uint8_t data[18] = {0x00};
1535         uint32_t cuid = 0;
1536
1537         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1538         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1539
1540         if (workFlags & 0x08) {
1541                 LED_A_ON();
1542                 LED_B_OFF();
1543                 LED_C_OFF();
1544                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1545
1546                 clear_trace();
1547                 set_tracing(true);
1548         }
1549
1550         while (true) {
1551                 if (workFlags & 0x02) {
1552                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1553                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1554                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1555                                 break;
1556                 };
1557                 // do no issue for gen1b magic tag
1558                 if (!(workFlags & 0x40)) {
1559                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1560                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1561                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1562                                 break;
1563                         };
1564                 }
1565         }
1566
1567                 // read block
1568                 if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1569                         if (MF_DBGLEVEL >= 1)   Dbprintf("read block send command error");
1570                         break;
1571                 };
1572                 memcpy(data, receivedAnswer, 18);
1573
1574                 if (workFlags & 0x04) {
1575                         // do no issue halt command for gen1b magic tag (#db# halt error. response len: 1)
1576                         if (!(workFlags & 0x40)) {
1577                                 if (mifare_classic_halt(NULL, cuid)) {
1578                                         if (MF_DBGLEVEL > 1)    Dbprintf("Halt error");
1579                                         // Continue, some magic tags misbehavies and send an answer to it.
1580                                         //      break;
1581                                 }
1582                         }
1583                 }
1584
1585                 isOK = 1;
1586                 break;
1587         }
1588
1589         if ((workFlags & 0x10) || (!isOK)) {
1590                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1591         }
1592
1593         LED_B_ON();
1594         if (workFlags & 0x20) {
1595                 if (isOK)
1596                         memcpy(datain, data, 18);
1597         }
1598         else
1599                 cmd_send(CMD_ACK,isOK,0,0,data,18);
1600         LED_B_OFF();
1601
1602         LEDsoff();
1603 }
1604
1605 void MifareCIdent(){
1606
1607         // card commands
1608         uint8_t wupC1[]       = { 0x40 };
1609         uint8_t wupC2[]       = { 0x43 };
1610
1611         // variables
1612         byte_t isOK = 0;
1613
1614         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1615         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1616
1617         LED_A_ON();
1618         LED_B_OFF();
1619         LED_C_OFF();
1620         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1621
1622         clear_trace();
1623         set_tracing(true);
1624
1625         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1626         if(ReaderReceive(receivedAnswer, receivedAnswerPar) && (receivedAnswer[0] == CARD_ACK)) {
1627                 isOK = 2;
1628
1629                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1630                 if(ReaderReceive(receivedAnswer, receivedAnswerPar) && (receivedAnswer[0] == CARD_ACK)) {
1631                         isOK = 1;
1632                 };
1633         };
1634
1635         // From iceman1001: removed the if,  since some magic tags misbehavies and send an answer to it.
1636         mifare_classic_halt(NULL, 0);
1637
1638         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1639
1640         LED_B_ON();
1641         cmd_send(CMD_ACK,isOK,0,0,0,0);
1642         LED_B_OFF();
1643
1644         LEDsoff();
1645 }
1646
1647 //
1648 // DESFIRE
1649 //
1650
1651 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1652
1653         byte_t dataout[11] = {0x00};
1654         uint8_t uid[10] = {0x00};
1655         uint32_t cuid;
1656
1657         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1658         clear_trace();
1659
1660         int len = iso14443a_select_card(uid, NULL, &cuid, true, 0, true);
1661         if(!len) {
1662                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1663                 OnError(1);
1664                 return;
1665         };
1666
1667         if(mifare_desfire_des_auth1(cuid, dataout)){
1668                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1669                 OnError(4);
1670                 return;
1671         }
1672
1673         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1674
1675         cmd_send(CMD_ACK, 1, cuid, 0, dataout, sizeof(dataout));
1676 }
1677
1678 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1679
1680         uint32_t cuid = arg0;
1681         uint8_t key[16] = {0x00};
1682         byte_t isOK = 0;
1683         byte_t dataout[12] = {0x00};
1684
1685         memcpy(key, datain, 16);
1686
1687         isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1688
1689         if (isOK) {
1690                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1691                 OnError(4);
1692                 return;
1693         }
1694
1695         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1696
1697         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1698
1699         cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1700         LEDsoff();
1701 }
1702