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         uint64_t ui64Key = 0;
 645         uint8_t uid[10];
 646         uint32_t cuid;
 647         uint8_t cascade_levels = 0;
 648         struct Crypto1State mpcs = {0, 0};
 649         struct Crypto1State *pcs;
 650         pcs = &mpcs;
 651         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 652         int16_t isOK = 0;
 653         uint8_t par_enc[1];
 654         uint8_t nt_par_enc = 0;
 655         uint8_t buf[USB_CMD_DATA_SIZE];
 656         uint32_t timeout;
 657
 658         uint8_t blockNo = arg0 & 0xff;
 659         uint8_t keyType = (arg0 >> 8) & 0xff;
 660         uint8_t targetBlockNo = arg1 & 0xff;
 661         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 662         ui64Key = bytes_to_num(datain, 6);
 663         bool initialize = flags & 0x0001;
 664         bool slow = flags & 0x0002;
 665         bool field_off = flags & 0x0004;
 666
 667         LED_A_ON();
 668
 669         if (initialize) {
 670                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 671                 clear_trace();
 672                 set_tracing(true);
 673         }
 674
 675         uint16_t num_nonces = 0;
 676         bool have_uid = false;
 677         for (uint16_t i = 0; i <= USB_CMD_DATA_SIZE - 9; ) {
 678
 679                 // Test if the action was cancelled
 680                 if(BUTTON_PRESS()) {
 681                         isOK = 2;
 682                         field_off = true;
 683                         break;
 684                 }
 685
 686                 if (!have_uid) { // need a full select cycle to get the uid first
 687                         iso14a_card_select_t card_info;
 688                         if(!iso14443a_select_card(uid, &card_info, &cuid, true, 0, true)) {
 689                                 if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Can't select card (ALL)");
 690                                 continue;
 691                         }
 692                         switch (card_info.uidlen) {
 693                                 case 4 : cascade_levels = 1; break;
 694                                 case 7 : cascade_levels = 2; break;
 695                                 case 10: cascade_levels = 3; break;
 696                                 default: break;
 697                         }
 698                         have_uid = true;
 699                 } else { // no need for anticollision. We can directly select the card
 700                         if(!iso14443a_select_card(uid, NULL, NULL, false, cascade_levels, true)) {
 701                                 if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Can't select card (UID)");
 702                                 continue;
 703                         }
 704                 }
 705
 706                 if (slow) {
 707                         timeout = GetCountSspClk() + HARDNESTED_PRE_AUTHENTICATION_LEADTIME;
 708                         while(GetCountSspClk() < timeout);
 709                 }
 710
 711                 uint32_t nt1;
 712                 if (mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, NULL, NULL)) {
 713                         if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Auth1 error");
 714                         continue;
 715                 }
 716
 717                 // nested authentication
 718                 uint16_t len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par_enc, NULL);
 719                 if (len != 4) {
 720                         if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Auth2 error len=%d", len);
 721                         continue;
 722                 }
 723
 724                 // send an incomplete dummy response in order to trigger the card's authentication failure timeout
 725                 uint8_t dummy_answer[1] = {0};
 726                 ReaderTransmit(dummy_answer, 1, NULL);
 727
 728                 timeout = GetCountSspClk() + HARDNESTED_AUTHENTICATION_TIMEOUT;
 729
 730                 num_nonces++;
 731                 if (num_nonces % 2) {
 732                         memcpy(buf+i, receivedAnswer, 4);
 733                         nt_par_enc = par_enc[0] & 0xf0;
 734                 } else {
 735                         nt_par_enc |= par_enc[0] >> 4;
 736                         memcpy(buf+i+4, receivedAnswer, 4);
 737                         memcpy(buf+i+8, &nt_par_enc, 1);
 738                         i += 9;
 739                 }
 740
 741                 // wait for the card to become ready again
 742                 while(GetCountSspClk() < timeout);
 743
 744         }
 745
 746         crypto1_destroy(pcs);
 747
 748         if (field_off) {
 749                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 750                 LED_D_OFF();
 751         }
 752
 753         if (MF_DBGLEVEL >= 3)   DbpString("AcquireEncryptedNonces finished");
 754
 755         cmd_send(CMD_ACK, isOK, cuid, num_nonces, buf, sizeof(buf));
 756
 757         LED_A_OFF();
 758 }
 759
 760
 761 //-----------------------------------------------------------------------------
 762 // MIFARE nested authentication.
 763 //
 764 //-----------------------------------------------------------------------------
 765 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain) {
 766
 767         uint8_t blockNo = arg0 & 0xff;
 768         uint8_t keyType = (arg0 >> 8) & 0xff;
 769         uint8_t targetBlockNo = arg1 & 0xff;
 770         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 771         uint64_t ui64Key = 0;
 772
 773         ui64Key = bytes_to_num(datain, 6);
 774
 775         uint16_t rtr, i, j, len;
 776         uint16_t davg;
 777         static uint16_t dmin, dmax;
 778         uint8_t uid[10];
 779         uint32_t cuid, nt1, nt2_enc, nttmp, nttest, ks1;
 780         uint8_t par[1];
 781         uint32_t target_nt[2], target_ks[2];
 782         uint32_t fixed_nt = 0;
 783         uint8_t target_nt_duplicate_count = 0;
 784
 785         uint8_t par_array[4];
 786         uint16_t ncount = 0;
 787         struct Crypto1State mpcs = {0, 0};
 788         struct Crypto1State *pcs;
 789         pcs = &mpcs;
 790         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 791
 792         uint32_t auth1_time, auth2_time, authentication_timeout = 0;
 793         static uint16_t delta_time;
 794
 795         LED_A_ON();
 796         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 797
 798         // free eventually allocated BigBuf memory
 799         BigBuf_free();
 800
 801         if (calibrate) clear_trace();
 802         set_tracing(true);
 803
 804         // statistics on nonce distance
 805         int16_t isOK = 0;
 806         #define NESTED_MAX_TRIES 12
 807         uint16_t unsuccessfull_tries = 0;
 808         if (calibrate) {    // for first call only. Otherwise reuse previous calibration
 809                 WDT_HIT();
 810
 811                 davg = dmax = 0;
 812                 dmin = 2000;
 813                 delta_time = 0;
 814
 815                 for (rtr = 0; rtr < 17; rtr++) {
 816
 817                         // prepare next select. No need to power down the card.
 818                         if (mifare_classic_halt(pcs, cuid)) {
 819                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 820                                 rtr--;
 821                                 continue;
 822                         }
 823
 824                         // Test if the action was cancelled
 825                         if (BUTTON_PRESS()) {
 826                                 isOK = -2;
 827                                 break;
 828                         }
 829
 830                         if (!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 831                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 832                                 rtr--;
 833                                 continue;
 834                         };
 835
 836                         auth1_time = 0;
 837                         if (mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time, NULL)) {
 838                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 839                                 rtr--;
 840                                 continue;
 841                         };
 842                         fixed_nt = nt1;
 843
 844                         if (delta_time) {
 845                                 auth2_time = auth1_time + delta_time;
 846                         } else {
 847                                 auth2_time = 0;
 848                         }
 849                         if (mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2_enc, &auth2_time, NULL)) {
 850                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 851                                 rtr--;
 852                                 continue;
 853                         };
 854
 855                         nttmp = prng_successor(nt1, 100);               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 856                         for (i = 101; i < 1200; i++) {
 857                                 nttmp = prng_successor(nttmp, 1);
 858                                 if (nttmp == nt2_enc) break;
 859                         }
 860
 861                         if (i != 1200) {
 862                                 if (rtr != 0) {
 863                                         davg += i;
 864                                         dmin = MIN(dmin, i);
 865                                         dmax = MAX(dmax, i);
 866                                 }
 867                                 else {
 868                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 869                                 }
 870                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 871                         } else {
 872                                 unsuccessfull_tries++;
 873                                 if (unsuccessfull_tries > NESTED_MAX_TRIES) {   // card isn't vulnerable to nested attack (random numbers are not predictable)
 874                                         isOK = -3;
 875                                 }
 876                         }
 877                 }
 878
 879                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 880
 881                 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);
 882
 883                 dmin = davg - 2;
 884                 dmax = davg + 2;
 885
 886         }
 887         //  -------------------------------------------------------------------------------------------------
 888
 889         //  get crypted nonces for target sector
 890         for (i = 0; i < 2 && !isOK; i++) { // look for exactly two different nonces
 891
 892                 target_nt[i] = 0;
 893                 while (target_nt[i] == 0 && !isOK) { // continue until we have an unambiguous nonce
 894
 895                         // prepare next select. No need to power down the card.
 896                         if (mifare_classic_halt(pcs, cuid)) {
 897                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 898                                 continue;
 899                         }
 900
 901                         // break out of the loop on button press
 902                         if (BUTTON_PRESS()) {
 903                                 isOK = -2;
 904                                 break;
 905                         }
 906
 907                         if (!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 908                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 909                                 continue;
 910                         }
 911
 912                         auth1_time = 0;
 913                         authentication_timeout = 0;
 914                         if (mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time, &authentication_timeout)) {
 915                                 if (MF_DBGLEVEL >= 1)  Dbprintf("Nested: Auth1 error");
 916                                 continue;
 917                         }
 918
 919                         // nested authentication
 920                         auth2_time = auth1_time + delta_time;
 921                         len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
 922                         if (len != 4) {
 923                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 924                                 continue;
 925                         }
 926
 927                         nt2_enc = bytes_to_num(receivedAnswer, 4);
 928                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2_enc, par[0]);
 929
 930                         // Parity validity check
 931                         for (j = 0; j < 4; j++) {
 932                                 par_array[j] = (oddparity8(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
 933                         }
 934
 935                         ncount = 0;
 936                         nttest = prng_successor(nt1, dmin - 1);
 937                         for (j = dmin; j < dmax + 1; j++) {
 938                                 nttest = prng_successor(nttest, 1);
 939                                 ks1 = nt2_enc ^ nttest;
 940
 941                                 if (valid_nonce(nttest, nt2_enc, ks1, par_array)){
 942                                         if (ncount > 0) {       // we are only interested in disambiguous nonces, try again
 943                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
 944                                                 target_nt[i] = 0;
 945                                                 break;
 946                                         }
 947                                         target_nt[i] = nttest;
 948                                         target_ks[i] = ks1;
 949                                         ncount++;
 950                                         if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
 951                                                 if( ++target_nt_duplicate_count >= NESTED_MAX_TRIES ) { // unable to get a 2nd nonce after NESTED_MAX_TRIES tries, probably a fixed nonce
 952                                                         if (MF_DBGLEVEL >= 2) Dbprintf("Nonce#2: cannot get nonce that != nonce#1, continuing anyway with single nonce! ntdist=%d", j);
 953                                                         break;
 954                                                 }
 955
 956                                                 target_nt[1] = 0;
 957                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
 958                                                 break;
 959                                         }
 960                                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 961                                 }
 962                         }
 963                         if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 964                 }
 965         }
 966
 967         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 968         LED_D_OFF();
 969
 970         crypto1_destroy(pcs);
 971
 972         uint8_t buf[4 + 4 * 4 + 4 + 4];
 973         memcpy(buf, &cuid, 4);
 974         memcpy(buf+4, &target_nt[0], 4);
 975         memcpy(buf+8, &target_ks[0], 4);
 976         memcpy(buf+12, &target_nt[1], 4);
 977         memcpy(buf+16, &target_ks[1], 4);
 978         memcpy(buf+20, &authentication_timeout, 4);
 979         memcpy(buf+24, &fixed_nt, 4);
 980
 981         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 982
 983         cmd_send(CMD_ACK, isOK, 0, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 984
 985         LED_A_OFF();
 986 }
 987
 988
 989 //-----------------------------------------------------------------------------
 990 // MIFARE check keys. key count up to 85.
 991 //
 992 //-----------------------------------------------------------------------------
 993 void MifareChkKeys(uint16_t arg0, uint32_t arg1, uint8_t arg2, uint8_t *datain) {
 994
 995         uint8_t blockNo = arg0 & 0xff;
 996         uint8_t keyType = arg0 >> 8;
 997         bool clearTrace = arg1 & 0x01;
 998         bool multisectorCheck = arg1 & 0x02;
 999         bool init = arg1 & 0x04;
1000         bool drop_field = arg1 & 0x08;
1001         bool fixed_nonce = arg1 & 0x10;
1002         uint32_t auth_timeout = arg1 >> 16;
1003         uint8_t keyCount = arg2;
1004
1005         LED_A_ON();
1006
1007         if (init) {
1008                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1009         }
1010
1011         if (clearTrace) {
1012                 clear_trace();
1013         }
1014         set_tracing(true);
1015
1016         // clear debug level. We are expecting lots of authentication failures...
1017         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
1018         MF_DBGLEVEL = MF_DBG_NONE;
1019
1020         int res = 0;
1021         if (multisectorCheck) {
1022                 TKeyIndex keyIndex = {{0}};
1023                 uint8_t sectorCnt = blockNo;
1024                 res = MifareMultisectorChk(datain, keyCount, sectorCnt, keyType, &auth_timeout, OLD_MF_DBGLEVEL, &keyIndex);
1025                 if (res >= 0) {
1026                         cmd_send(CMD_ACK, 1, res, 0, keyIndex, 80);
1027                 } else {
1028                         cmd_send(CMD_ACK, 0, res, 0, NULL, 0);
1029                 }
1030         } else if (fixed_nonce) {
1031                 res = MifareChkBlockKeysFixedNonce(datain, keyCount, blockNo, keyType, &auth_timeout, OLD_MF_DBGLEVEL);
1032                 if (res > 0) {
1033                         cmd_send(CMD_ACK, 1, res, 0, NULL, 0); // key found
1034                 } else {
1035                         cmd_send(CMD_ACK, 0, res, 0, NULL, 0); // no key found or aborted
1036                 }
1037         } else {
1038                 res = MifareChkBlockKeys(datain, keyCount, blockNo, keyType, &auth_timeout, OLD_MF_DBGLEVEL);
1039                 if (res > 0) {
1040                         cmd_send(CMD_ACK, 1, res, 0, datain + (res - 1) * 6, 6);
1041                 } else {
1042                         cmd_send(CMD_ACK, 0, res, 0, NULL, 0);
1043                 }
1044         }
1045
1046         if (drop_field || res != 0) {
1047                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1048                 LED_D_OFF();
1049         }
1050
1051         // restore debug level
1052         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
1053
1054         LED_A_OFF();
1055 }
1056
1057
1058 //-----------------------------------------------------------------------------
1059 // MIFARE Personalize UID. Only for Mifare Classic EV1 7Byte UID
1060 //-----------------------------------------------------------------------------
1061 void MifarePersonalizeUID(uint8_t keyType, uint8_t perso_option, uint8_t *data) {
1062
1063         uint8_t uid[10];
1064         uint32_t cuid;
1065         struct Crypto1State mpcs = {0, 0};
1066         struct Crypto1State *pcs;
1067         pcs = &mpcs;
1068
1069         LED_A_ON();
1070         clear_trace();
1071
1072         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1073
1074         bool isOK = false;
1075         while (true) {
1076                 if (!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
1077                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1078                         break;
1079                 }
1080
1081                 uint8_t block_number = 0;
1082                 uint64_t key = bytes_to_num(data, 6);
1083                 if (mifare_classic_auth(pcs, cuid, block_number, keyType, key, AUTH_FIRST, NULL)) {
1084                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
1085                         break;
1086                 }
1087
1088                 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1089                 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1090                 int len = mifare_sendcmd_short(pcs, true, MIFARE_EV1_PERSONAL_UID, perso_option, receivedAnswer, receivedAnswerPar, NULL);
1091                 if (len != 1 || receivedAnswer[0] != CARD_ACK) {
1092                         if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
1093                         break;;
1094                 }
1095                 isOK = true;
1096                 break;
1097         }
1098
1099         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1100         LED_D_OFF();
1101
1102         crypto1_destroy(pcs);
1103
1104         if (MF_DBGLEVEL >= 2)   DbpString("PERSONALIZE UID FINISHED");
1105
1106         cmd_send(CMD_ACK, isOK, 0, 0, NULL, 0);
1107
1108         LED_A_OFF();
1109 }
1110
1111 //-----------------------------------------------------------------------------
1112 // MIFARE commands set debug level
1113 //
1114 //-----------------------------------------------------------------------------
1115 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1116         MF_DBGLEVEL = arg0;
1117         Dbprintf("Debug level: %d", MF_DBGLEVEL);
1118 }
1119
1120 //-----------------------------------------------------------------------------
1121 // Work with emulator memory
1122 //
1123 // Note: we call FpgaDownloadAndGo(FPGA_BITSTREAM_HF) here although FPGA is not
1124 // involved in dealing with emulator memory. But if it is called later, it might
1125 // destroy the Emulator Memory.
1126 //-----------------------------------------------------------------------------
1127
1128 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1129         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1130         emlClearMem();
1131 }
1132
1133 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1134         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1135         emlSetMem(datain, arg0, arg1); // data, block num, blocks count
1136 }
1137
1138 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1139         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1140         byte_t buf[USB_CMD_DATA_SIZE];
1141         emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
1142
1143         LED_B_ON();
1144         cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
1145         LED_B_OFF();
1146 }
1147
1148 //-----------------------------------------------------------------------------
1149 // Load a card into the emulator memory
1150 //
1151 //-----------------------------------------------------------------------------
1152 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1153         uint8_t numSectors = arg0;
1154         uint8_t keyType = arg1;
1155         uint64_t ui64Key = 0;
1156         uint32_t cuid;
1157         struct Crypto1State mpcs = {0, 0};
1158         struct Crypto1State *pcs;
1159         pcs = &mpcs;
1160
1161         // variables
1162         byte_t dataoutbuf[16];
1163         byte_t dataoutbuf2[16];
1164         uint8_t uid[10];
1165
1166         LED_A_ON();
1167         LED_B_OFF();
1168         LED_C_OFF();
1169         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1170
1171         clear_trace();
1172         set_tracing(false);
1173
1174         bool isOK = true;
1175
1176         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
1177                 isOK = false;
1178                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1179         }
1180
1181         for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
1182                 ui64Key = emlGetKey(sectorNo, keyType);
1183                 if (sectorNo == 0){
1184                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST, NULL)) {
1185                                 isOK = false;
1186                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth error", sectorNo);
1187                                 break;
1188                         }
1189                 } else {
1190                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED, NULL)) {
1191                                 isOK = false;
1192                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
1193                                 break;
1194                         }
1195                 }
1196
1197                 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
1198                         if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
1199                                 isOK = false;
1200                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
1201                                 break;
1202                         };
1203                         if (isOK) {
1204                                 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
1205                                         emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
1206                                 } else {    // sector trailer, keep the keys, set only the AC
1207                                         emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
1208                                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
1209                                         emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
1210                                 }
1211                         }
1212                 }
1213
1214         }
1215
1216         if(mifare_classic_halt(pcs, cuid)) {
1217                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1218         };
1219
1220         //  ----------------------------- crypto1 destroy
1221         crypto1_destroy(pcs);
1222
1223         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1224         LEDsoff();
1225
1226         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
1227
1228 }
1229
1230
1231 //-----------------------------------------------------------------------------
1232 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
1233 //
1234 //-----------------------------------------------------------------------------
1235
1236 static bool isBlockTrailer(int blockN) {
1237         if (blockN >= 0 && blockN < 128) {
1238                 return ((blockN & 0x03) == 0x03);
1239         }
1240         if (blockN >= 128 && blockN <= 256) {
1241                 return ((blockN & 0x0F) == 0x0F);
1242         }
1243         return false;
1244 }
1245
1246 void MifareCWipe(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1247         // var
1248         byte_t isOK = 0;
1249         uint32_t numBlocks = arg0;
1250         // cmdParams:
1251         // bit 0 - wipe gen1a
1252         // bit 1 - fill card with default data
1253         // bit 2 - gen1a = 0, gen1b = 1
1254         uint8_t cmdParams = arg1;
1255         bool needWipe = cmdParams & 0x01;
1256         bool needFill = cmdParams & 0x02;
1257         bool gen1b = cmdParams & 0x04;
1258
1259         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1260         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1261
1262         uint8_t block0[16] = {0x01, 0x02, 0x03, 0x04, 0x04, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xBE, 0xAF};
1263         uint8_t block1[16] = {0x00};
1264         uint8_t blockK[16] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x08, 0x77, 0x8F, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
1265         uint8_t d_block[18] = {0x00};
1266
1267         // card commands
1268         uint8_t wupC1[]       = { 0x40 };
1269         uint8_t wupC2[]       = { 0x43 };
1270         uint8_t wipeC[]       = { 0x41 };
1271
1272         // iso14443 setup
1273         LED_A_ON();
1274         LED_B_OFF();
1275         LED_C_OFF();
1276         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1277
1278         // tracing
1279         clear_trace();
1280         set_tracing(true);
1281
1282         while (true){
1283                 // wipe
1284                 if (needWipe){
1285                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1286                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1287                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1288                                 break;
1289                         };
1290
1291                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1292                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1293                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1294                                 break;
1295                         };
1296
1297                         if(mifare_classic_halt(NULL, 0)) {
1298                                 if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1299                         };
1300                 };
1301
1302                 // put default data
1303                 if (needFill){
1304                         // select commands
1305                         ReaderTransmitBitsPar(wupC1, 7, 0, NULL);
1306
1307                         // 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)
1308                         if (!gen1b) {
1309
1310                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1311                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1312                                         break;
1313                                 };
1314
1315                                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1316                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1317                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1318                                         break;
1319                                 };
1320                         }
1321
1322                         // send blocks command
1323                         for (int blockNo = 0; blockNo < numBlocks; blockNo++) {
1324                                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != CARD_ACK)) {
1325                                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1326                                         break;
1327                                 };
1328
1329                                 // check type of block and add crc
1330                                 if (!isBlockTrailer(blockNo)){
1331                                         memcpy(d_block, block1, 16);
1332                                 } else {
1333                                         memcpy(d_block, blockK, 16);
1334                                 }
1335                                 if (blockNo == 0) {
1336                                         memcpy(d_block, block0, 16);
1337                                 }
1338                                 AppendCrc14443a(d_block, 16);
1339
1340                                 // send write command
1341                                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1342                                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != CARD_ACK)) {
1343                                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1344                                         break;
1345                                 };
1346                         }
1347
1348                         // halt
1349                         // do no issue halt command for gen1b
1350                         if (!gen1b) {
1351                                 if (mifare_classic_halt(NULL, 0)) {
1352                                         if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1353                                                 break;
1354                                 }
1355                         }
1356                 }
1357                 break;
1358         }
1359
1360         // reset fpga
1361         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1362
1363         // send USB response
1364         LED_B_ON();
1365         cmd_send(CMD_ACK,isOK,0,0,NULL,0);
1366         LED_B_OFF();
1367
1368         LEDsoff();
1369
1370         return;
1371 }
1372
1373 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1374
1375   // params
1376         uint8_t needWipe = arg0;
1377         // bit 0 - need get UID
1378         // bit 1 - need wupC
1379         // bit 2 - need HALT after sequence
1380         // bit 3 - need init FPGA and field before sequence
1381         // bit 4 - need reset FPGA and LED
1382         // bit 6 - gen1b backdoor type
1383         uint8_t workFlags = arg1;
1384         uint8_t blockNo = arg2;
1385
1386         // card commands
1387         uint8_t wupC1[]       = { 0x40 };
1388         uint8_t wupC2[]       = { 0x43 };
1389         uint8_t wipeC[]       = { 0x41 };
1390
1391         // variables
1392         byte_t isOK = 0;
1393         uint8_t uid[10] = {0x00};
1394         uint8_t d_block[18] = {0x00};
1395         uint32_t cuid;
1396
1397         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1398         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1399
1400         // reset FPGA and LED
1401         if (workFlags & 0x08) {
1402                 LED_A_ON();
1403                 LED_B_OFF();
1404                 LED_C_OFF();
1405                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1406
1407                 clear_trace();
1408                 set_tracing(true);
1409         }
1410
1411         while (true) {
1412
1413                 // get UID from chip
1414                 if (workFlags & 0x01) {
1415                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
1416                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1417                                 // 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.
1418                                 //break;
1419                                 };
1420
1421                                 if(mifare_classic_halt(NULL, cuid)) {
1422                                         if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1423                                         // Continue, some magic tags misbehavies and send an answer to it.
1424                                         // break;
1425                                 };
1426                 };
1427
1428                 // reset chip
1429                 // Wipe command don't work with gen1b
1430                 if (needWipe && !(workFlags & 0x40)){
1431                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1432                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1433                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1434                                 break;
1435                         };
1436
1437                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1438                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1439                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1440                                 break;
1441                         };
1442
1443                         if(mifare_classic_halt(NULL, 0)) {
1444                                 if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1445                                 // Continue, some magic tags misbehavies and send an answer to it.
1446                                                         // break;
1447                         };
1448                 };
1449
1450                 // write block
1451                 if (workFlags & 0x02) {
1452                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1453
1454                         // 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)
1455                         if (!(workFlags & 0x40)) {
1456
1457                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1458                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1459                                         break;
1460                                 };
1461
1462                                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1463                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1464                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1465                                         break;
1466                                 };
1467                         }
1468                 }
1469
1470                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != CARD_ACK)) {
1471                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1472                         break;
1473                 };
1474
1475                 memcpy(d_block, datain, 16);
1476                 AppendCrc14443a(d_block, 16);
1477
1478                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1479                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != CARD_ACK)) {
1480                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1481                         break;
1482                 };
1483
1484                 if (workFlags & 0x04) {
1485                         // do no issue halt command for gen1b magic tag (#db# halt error. response len: 1)
1486                         if (!(workFlags & 0x40)) {
1487                                 if (mifare_classic_halt(NULL, 0)) {
1488                                         if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1489                                         // Continue, some magic tags misbehavies and send an answer to it.
1490                                         // break;
1491                                 }
1492                         }
1493                 }
1494
1495                 isOK = 1;
1496                 break;
1497         }
1498
1499         if ((workFlags & 0x10) || (!isOK)) {
1500                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1501         }
1502
1503         LED_B_ON();
1504         cmd_send(CMD_ACK,isOK,0,0,uid,4);
1505         LED_B_OFF();
1506
1507         LEDsoff();
1508 }
1509
1510
1511 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1512
1513         // params
1514         // bit 1 - need wupC
1515         // bit 2 - need HALT after sequence
1516         // bit 3 - need init FPGA and field before sequence
1517         // bit 4 - need reset FPGA and LED
1518         // bit 5 - need to set datain instead of issuing USB reply (called via ARM for StandAloneMode14a)
1519         // bit 6 - gen1b backdoor type
1520         uint8_t workFlags = arg0;
1521         uint8_t blockNo = arg2;
1522
1523         // card commands
1524         uint8_t wupC1[]       = { 0x40 };
1525         uint8_t wupC2[]       = { 0x43 };
1526
1527         // variables
1528         byte_t isOK = 0;
1529         uint8_t data[18] = {0x00};
1530         uint32_t cuid = 0;
1531
1532         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1533         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1534
1535         if (workFlags & 0x08) {
1536                 LED_A_ON();
1537                 LED_B_OFF();
1538                 LED_C_OFF();
1539                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1540
1541                 clear_trace();
1542                 set_tracing(true);
1543         }
1544
1545         while (true) {
1546                 if (workFlags & 0x02) {
1547                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1548                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1549                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1550                                 break;
1551                 };
1552                 // do no issue for gen1b magic tag
1553                 if (!(workFlags & 0x40)) {
1554                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1555                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1556                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1557                                 break;
1558                         };
1559                 }
1560         }
1561
1562                 // read block
1563                 if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1564                         if (MF_DBGLEVEL >= 1)   Dbprintf("read block send command error");
1565                         break;
1566                 };
1567                 memcpy(data, receivedAnswer, 18);
1568
1569                 if (workFlags & 0x04) {
1570                         // do no issue halt command for gen1b magic tag (#db# halt error. response len: 1)
1571                         if (!(workFlags & 0x40)) {
1572                                 if (mifare_classic_halt(NULL, cuid)) {
1573                                         if (MF_DBGLEVEL > 1)    Dbprintf("Halt error");
1574                                         // Continue, some magic tags misbehavies and send an answer to it.
1575                                         //      break;
1576                                 }
1577                         }
1578                 }
1579
1580                 isOK = 1;
1581                 break;
1582         }
1583
1584         if ((workFlags & 0x10) || (!isOK)) {
1585                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1586         }
1587
1588         LED_B_ON();
1589         if (workFlags & 0x20) {
1590                 if (isOK)
1591                         memcpy(datain, data, 18);
1592         }
1593         else
1594                 cmd_send(CMD_ACK,isOK,0,0,data,18);
1595         LED_B_OFF();
1596
1597         LEDsoff();
1598 }
1599
1600 void MifareCIdent(){
1601
1602         // card commands
1603         uint8_t wupC1[]       = { 0x40 };
1604         uint8_t wupC2[]       = { 0x43 };
1605
1606         // variables
1607         byte_t isOK = 0;
1608
1609         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1610         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1611
1612         LED_A_ON();
1613         LED_B_OFF();
1614         LED_C_OFF();
1615         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1616
1617         clear_trace();
1618         set_tracing(true);
1619
1620         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1621         if(ReaderReceive(receivedAnswer, receivedAnswerPar) && (receivedAnswer[0] == CARD_ACK)) {
1622                 isOK = 2;
1623
1624                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1625                 if(ReaderReceive(receivedAnswer, receivedAnswerPar) && (receivedAnswer[0] == CARD_ACK)) {
1626                         isOK = 1;
1627                 };
1628         };
1629
1630         // From iceman1001: removed the if,  since some magic tags misbehavies and send an answer to it.
1631         mifare_classic_halt(NULL, 0);
1632
1633         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1634
1635         LED_B_ON();
1636         cmd_send(CMD_ACK,isOK,0,0,0,0);
1637         LED_B_OFF();
1638
1639         LEDsoff();
1640 }
1641
1642 //
1643 // DESFIRE
1644 //
1645
1646 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1647
1648         byte_t dataout[11] = {0x00};
1649         uint8_t uid[10] = {0x00};
1650         uint32_t cuid;
1651
1652         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1653         clear_trace();
1654
1655         int len = iso14443a_select_card(uid, NULL, &cuid, true, 0, true);
1656         if(!len) {
1657                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1658                 OnError(1);
1659                 return;
1660         };
1661
1662         if(mifare_desfire_des_auth1(cuid, dataout)){
1663                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1664                 OnError(4);
1665                 return;
1666         }
1667
1668         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1669
1670         cmd_send(CMD_ACK, 1, cuid, 0, dataout, sizeof(dataout));
1671 }
1672
1673 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1674
1675         uint32_t cuid = arg0;
1676         uint8_t key[16] = {0x00};
1677         byte_t isOK = 0;
1678         byte_t dataout[12] = {0x00};
1679
1680         memcpy(key, datain, 16);
1681
1682         isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1683
1684         if (isOK) {
1685                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1686                 OnError(4);
1687                 return;
1688         }
1689
1690         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1691
1692         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1693
1694         cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1695         LEDsoff();
1696 }
1697