cvs.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 "apps.h"
  19 #include "util.h"
  20 #include "parity.h"
  21 #include "crc.h"
  22
  23 #define HARDNESTED_AUTHENTICATION_TIMEOUT 848                   // card times out 1ms after wrong authentication (according to NXP documentation)
  24 #define HARDNESTED_PRE_AUTHENTICATION_LEADTIME 400              // some (non standard) cards need a pause after select before they are ready for first authentication
  25
  26 // the block number for the ISO14443-4 PCB
  27 static uint8_t pcb_blocknum = 0;
  28 // Deselect card by sending a s-block. the crc is precalced for speed
  29 static  uint8_t deselect_cmd[] = {0xc2,0xe0,0xb4};
  30
  31 //-----------------------------------------------------------------------------
  32 // Select, Authenticate, Read a MIFARE tag.
  33 // read block
  34 //-----------------------------------------------------------------------------
  35 void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
  36 {
  37   // params
  38         uint8_t blockNo = arg0;
  39         uint8_t keyType = arg1;
  40         uint64_t ui64Key = 0;
  41         ui64Key = bytes_to_num(datain, 6);
  42
  43         // variables
  44         byte_t isOK = 0;
  45         byte_t dataoutbuf[16];
  46         uint8_t uid[10];
  47         uint32_t cuid;
  48         struct Crypto1State mpcs = {0, 0};
  49         struct Crypto1State *pcs;
  50         pcs = &mpcs;
  51
  52         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  53
  54         clear_trace();
  55
  56         LED_A_ON();
  57         LED_B_OFF();
  58         LED_C_OFF();
  59
  60         while (true) {
  61                 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
  62                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
  63                         break;
  64                 };
  65
  66                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
  67                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
  68                         break;
  69                 };
  70
  71                 if(mifare_classic_readblock(pcs, cuid, blockNo, dataoutbuf)) {
  72                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read block error");
  73                         break;
  74                 };
  75
  76                 if(mifare_classic_halt(pcs, cuid)) {
  77                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
  78                         break;
  79                 };
  80
  81                 isOK = 1;
  82                 break;
  83         }
  84
  85         //  ----------------------------- crypto1 destroy
  86         crypto1_destroy(pcs);
  87
  88         if (MF_DBGLEVEL >= 2)   DbpString("READ BLOCK FINISHED");
  89
  90         LED_B_ON();
  91         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
  92         LED_B_OFF();
  93
  94         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
  95         LEDsoff();
  96 }
  97
  98 void MifareUC_Auth(uint8_t arg0, uint8_t *keybytes){
  99
 100         bool turnOffField = (arg0 == 1);
 101
 102         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 103
 104         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 105
 106         clear_trace();
 107
 108         if(!iso14443a_select_card(NULL, NULL, NULL, true, 0, true)) {
 109                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
 110                 OnError(0);
 111                 return;
 112         };
 113
 114         if(!mifare_ultra_auth(keybytes)){
 115                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed");
 116                 OnError(1);
 117                 return;
 118         }
 119
 120         if (turnOffField) {
 121                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 122                 LEDsoff();
 123         }
 124         cmd_send(CMD_ACK,1,0,0,0,0);
 125 }
 126
 127 // Arg0 = BlockNo,
 128 // Arg1 = UsePwd bool
 129 // datain = PWD bytes,
 130 void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 131 {
 132         uint8_t blockNo = arg0;
 133         byte_t dataout[16] = {0x00};
 134         bool useKey = (arg1 == 1); //UL_C
 135         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 136
 137         LEDsoff();
 138         LED_A_ON();
 139         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 140
 141         clear_trace();
 142
 143         int len = iso14443a_select_card(NULL, NULL, NULL, true, 0, true);
 144         if(!len) {
 145                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);
 146                 OnError(1);
 147                 return;
 148         }
 149
 150         // UL-C authentication
 151         if ( useKey ) {
 152                 uint8_t key[16] = {0x00};
 153                 memcpy(key, datain, sizeof(key) );
 154
 155                 if ( !mifare_ultra_auth(key) ) {
 156                         OnError(1);
 157                         return;
 158                 }
 159         }
 160
 161         // UL-EV1 / NTAG authentication
 162         if ( usePwd ) {
 163                 uint8_t pwd[4] = {0x00};
 164                 memcpy(pwd, datain, 4);
 165                 uint8_t pack[4] = {0,0,0,0};
 166                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 167                         OnError(1);
 168                         return;
 169                 }
 170         }
 171
 172         if( mifare_ultra_readblock(blockNo, dataout) ) {
 173                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block error");
 174                 OnError(2);
 175                 return;
 176         }
 177
 178         if( mifare_ultra_halt() ) {
 179                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 180                 OnError(3);
 181                 return;
 182         }
 183
 184         cmd_send(CMD_ACK,1,0,0,dataout,16);
 185         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 186         LEDsoff();
 187 }
 188
 189 //-----------------------------------------------------------------------------
 190 // Select, Authenticate, Read a MIFARE tag.
 191 // read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
 192 //-----------------------------------------------------------------------------
 193 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 194 {
 195   // params
 196         uint8_t sectorNo = arg0;
 197         uint8_t keyType = arg1;
 198         uint64_t ui64Key = 0;
 199         ui64Key = bytes_to_num(datain, 6);
 200
 201         // variables
 202         byte_t isOK = 0;
 203         byte_t dataoutbuf[16 * 16];
 204         uint8_t uid[10];
 205         uint32_t cuid;
 206         struct Crypto1State mpcs = {0, 0};
 207         struct Crypto1State *pcs;
 208         pcs = &mpcs;
 209
 210         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 211
 212         clear_trace();
 213
 214         LED_A_ON();
 215         LED_B_OFF();
 216         LED_C_OFF();
 217
 218         isOK = 1;
 219         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 220                 isOK = 0;
 221                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 222         }
 223
 224
 225         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 226                 isOK = 0;
 227                 if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 228         }
 229
 230         for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 231                 if(mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf + 16 * blockNo)) {
 232                         isOK = 0;
 233                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read sector %2d block %2d error", sectorNo, blockNo);
 234                         break;
 235                 }
 236         }
 237
 238         if(mifare_classic_halt(pcs, cuid)) {
 239                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 240         }
 241
 242         //  ----------------------------- crypto1 destroy
 243         crypto1_destroy(pcs);
 244
 245         if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
 246
 247         LED_B_ON();
 248         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16*NumBlocksPerSector(sectorNo));
 249         LED_B_OFF();
 250
 251         // Thats it...
 252         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 253         LEDsoff();
 254 }
 255
 256 // arg0 = blockNo (start)
 257 // arg1 = Pages (number of blocks)
 258 // arg2 = useKey
 259 // datain = KEY bytes
 260 void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 261 {
 262         LEDsoff();
 263         LED_A_ON();
 264         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 265
 266         // free eventually allocated BigBuf memory
 267         BigBuf_free();
 268         clear_trace();
 269
 270         // params
 271         uint8_t blockNo = arg0;
 272         uint16_t blocks = arg1;
 273         bool useKey = (arg2 == 1); //UL_C
 274         bool usePwd = (arg2 == 2); //UL_EV1/NTAG
 275         uint32_t countblocks = 0;
 276         uint8_t *dataout = BigBuf_malloc(CARD_MEMORY_SIZE);
 277         if (dataout == NULL){
 278                 Dbprintf("out of memory");
 279                 OnError(1);
 280                 return;
 281         }
 282
 283         int len = iso14443a_select_card(NULL, NULL, NULL, true, 0, true);
 284         if (!len) {
 285                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%d)",len);
 286                 OnError(1);
 287                 return;
 288         }
 289
 290         // UL-C authentication
 291         if ( useKey ) {
 292                 uint8_t key[16] = {0x00};
 293                 memcpy(key, datain, sizeof(key) );
 294
 295                 if ( !mifare_ultra_auth(key) ) {
 296                         OnError(1);
 297                         return;
 298                 }
 299         }
 300
 301         // UL-EV1 / NTAG authentication
 302         if (usePwd) {
 303                 uint8_t pwd[4] = {0x00};
 304                 memcpy(pwd, datain, sizeof(pwd));
 305                 uint8_t pack[4] = {0,0,0,0};
 306
 307                 if (!mifare_ul_ev1_auth(pwd, pack)){
 308                         OnError(1);
 309                         return;
 310                 }
 311         }
 312
 313         for (int i = 0; i < blocks; i++){
 314                 if ((i*4) + 4 >= CARD_MEMORY_SIZE) {
 315                         Dbprintf("Data exceeds buffer!!");
 316                         break;
 317                 }
 318
 319                 len = mifare_ultra_readblock(blockNo + i, dataout + 4 * i);
 320
 321                 if (len) {
 322                         if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
 323                         // if no blocks read - error out
 324                         if (i==0){
 325                                 OnError(2);
 326                                 return;
 327                         } else {
 328                                 //stop at last successful read block and return what we got
 329                                 break;
 330                         }
 331                 } else {
 332                         countblocks++;
 333                 }
 334         }
 335
 336         len = mifare_ultra_halt();
 337         if (len) {
 338                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 339                 OnError(3);
 340                 return;
 341         }
 342
 343         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Blocks read %d", countblocks);
 344
 345         countblocks *= 4;
 346
 347         cmd_send(CMD_ACK, 1, countblocks, BigBuf_max_traceLen(), 0, 0);
 348         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 349         LEDsoff();
 350         BigBuf_free();
 351 }
 352
 353 //-----------------------------------------------------------------------------
 354 // Select, Authenticate, Write a MIFARE tag.
 355 // read block
 356 //-----------------------------------------------------------------------------
 357 void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 358 {
 359         // params
 360         uint8_t blockNo = arg0;
 361         uint8_t keyType = arg1;
 362         uint64_t ui64Key = 0;
 363         byte_t blockdata[16];
 364
 365         ui64Key = bytes_to_num(datain, 6);
 366         memcpy(blockdata, datain + 10, 16);
 367
 368         // variables
 369         byte_t isOK = 0;
 370         uint8_t uid[10];
 371         uint32_t cuid;
 372         struct Crypto1State mpcs = {0, 0};
 373         struct Crypto1State *pcs;
 374         pcs = &mpcs;
 375
 376         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 377
 378         clear_trace();
 379
 380         LED_A_ON();
 381         LED_B_OFF();
 382         LED_C_OFF();
 383
 384         while (true) {
 385                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 386                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 387                         break;
 388                 };
 389
 390                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 391                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 392                         break;
 393                 };
 394
 395                 if(mifare_classic_writeblock(pcs, cuid, blockNo, blockdata)) {
 396                         if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 397                         break;
 398                 };
 399
 400                 if(mifare_classic_halt(pcs, cuid)) {
 401                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 402                         break;
 403                 };
 404
 405                 isOK = 1;
 406                 break;
 407         }
 408
 409         //  ----------------------------- crypto1 destroy
 410         crypto1_destroy(pcs);
 411
 412         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 413
 414         LED_B_ON();
 415         cmd_send(CMD_ACK,isOK,0,0,0,0);
 416         LED_B_OFF();
 417
 418
 419         // Thats it...
 420         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 421         LEDsoff();
 422 }
 423
 424 /* // Command not needed but left for future testing
 425 void MifareUWriteBlockCompat(uint8_t arg0, uint8_t *datain)
 426 {
 427         uint8_t blockNo = arg0;
 428         byte_t blockdata[16] = {0x00};
 429
 430         memcpy(blockdata, datain, 16);
 431
 432         uint8_t uid[10] = {0x00};
 433
 434         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 435
 436         clear_trace();
 437         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 438
 439         if(!iso14443a_select_card(uid, NULL, NULL, true, 0)) {
 440                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 441                 OnError(0);
 442                 return;
 443         };
 444
 445         if(mifare_ultra_writeblock_compat(blockNo, blockdata)) {
 446                 if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 447                 OnError(0);
 448                 return; };
 449
 450         if(mifare_ultra_halt()) {
 451                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 452                 OnError(0);
 453                 return;
 454         };
 455
 456         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 457
 458         cmd_send(CMD_ACK,1,0,0,0,0);
 459         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 460         LEDsoff();
 461 }
 462 */
 463
 464 // Arg0   : Block to write to.
 465 // Arg1   : 0 = use no authentication.
 466 //          1 = use 0x1A authentication.
 467 //          2 = use 0x1B authentication.
 468 // datain : 4 first bytes is data to be written.
 469 //        : 4/16 next bytes is authentication key.
 470 void MifareUWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 471 {
 472         uint8_t blockNo = arg0;
 473         bool useKey = (arg1 == 1); //UL_C
 474         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 475         byte_t blockdata[4] = {0x00};
 476
 477         memcpy(blockdata, datain,4);
 478
 479         LEDsoff();
 480         LED_A_ON();
 481         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 482
 483         clear_trace();
 484
 485         if(!iso14443a_select_card(NULL, NULL, NULL, true, 0, true)) {
 486                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 487                 OnError(0);
 488                 return;
 489         };
 490
 491         // UL-C authentication
 492         if ( useKey ) {
 493                 uint8_t key[16] = {0x00};
 494                 memcpy(key, datain+4, sizeof(key) );
 495
 496                 if ( !mifare_ultra_auth(key) ) {
 497                         OnError(1);
 498                         return;
 499                 }
 500         }
 501
 502         // UL-EV1 / NTAG authentication
 503         if (usePwd) {
 504                 uint8_t pwd[4] = {0x00};
 505                 memcpy(pwd, datain+4, 4);
 506                 uint8_t pack[4] = {0,0,0,0};
 507                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 508                         OnError(1);
 509                         return;
 510                 }
 511         }
 512
 513         if(mifare_ultra_writeblock(blockNo, blockdata)) {
 514                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 515                 OnError(0);
 516                 return;
 517         };
 518
 519         if(mifare_ultra_halt()) {
 520                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 521                 OnError(0);
 522                 return;
 523         };
 524
 525         if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
 526
 527         cmd_send(CMD_ACK,1,0,0,0,0);
 528         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 529         LEDsoff();
 530 }
 531
 532 void MifareUSetPwd(uint8_t arg0, uint8_t *datain){
 533
 534         uint8_t pwd[16] = {0x00};
 535         byte_t blockdata[4] = {0x00};
 536
 537         memcpy(pwd, datain, 16);
 538
 539         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 540         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 541
 542         clear_trace();
 543
 544         if(!iso14443a_select_card(NULL, NULL, NULL, true, 0, true)) {
 545                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 546                 OnError(0);
 547                 return;
 548         };
 549
 550         blockdata[0] = pwd[7];
 551         blockdata[1] = pwd[6];
 552         blockdata[2] = pwd[5];
 553         blockdata[3] = pwd[4];
 554         if(mifare_ultra_writeblock( 44, blockdata)) {
 555                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 556                 OnError(44);
 557                 return;
 558         };
 559
 560         blockdata[0] = pwd[3];
 561         blockdata[1] = pwd[2];
 562         blockdata[2] = pwd[1];
 563         blockdata[3] = pwd[0];
 564         if(mifare_ultra_writeblock( 45, blockdata)) {
 565                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 566                 OnError(45);
 567                 return;
 568         };
 569
 570         blockdata[0] = pwd[15];
 571         blockdata[1] = pwd[14];
 572         blockdata[2] = pwd[13];
 573         blockdata[3] = pwd[12];
 574         if(mifare_ultra_writeblock( 46, blockdata)) {
 575                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 576                 OnError(46);
 577                 return;
 578         };
 579
 580         blockdata[0] = pwd[11];
 581         blockdata[1] = pwd[10];
 582         blockdata[2] = pwd[9];
 583         blockdata[3] = pwd[8];
 584         if(mifare_ultra_writeblock( 47, blockdata)) {
 585                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 586                 OnError(47);
 587                 return;
 588         };
 589
 590         if(mifare_ultra_halt()) {
 591                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 592                 OnError(0);
 593                 return;
 594         };
 595
 596         cmd_send(CMD_ACK,1,0,0,0,0);
 597         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 598         LEDsoff();
 599 }
 600
 601 // Return 1 if the nonce is invalid else return 0
 602 int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_t *parity) {
 603         return ((oddparity8((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity8((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
 604         (oddparity8((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity8((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
 605         (oddparity8((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity8((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
 606 }
 607
 608
 609 //-----------------------------------------------------------------------------
 610 // acquire encrypted nonces in order to perform the attack described in
 611 // Carlo Meijer, Roel Verdult, "Ciphertext-only Cryptanalysis on Hardened
 612 // Mifare Classic Cards" in Proceedings of the 22nd ACM SIGSAC Conference on
 613 // Computer and Communications Security, 2015
 614 //-----------------------------------------------------------------------------
 615 void MifareAcquireEncryptedNonces(uint32_t arg0, uint32_t arg1, uint32_t flags, uint8_t *datain)
 616 {
 617         uint64_t ui64Key = 0;
 618         uint8_t uid[10];
 619         uint32_t cuid;
 620         uint8_t cascade_levels = 0;
 621         struct Crypto1State mpcs = {0, 0};
 622         struct Crypto1State *pcs;
 623         pcs = &mpcs;
 624         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 625         int16_t isOK = 0;
 626         uint8_t par_enc[1];
 627         uint8_t nt_par_enc = 0;
 628         uint8_t buf[USB_CMD_DATA_SIZE];
 629         uint32_t timeout;
 630
 631         uint8_t blockNo = arg0 & 0xff;
 632         uint8_t keyType = (arg0 >> 8) & 0xff;
 633         uint8_t targetBlockNo = arg1 & 0xff;
 634         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 635         ui64Key = bytes_to_num(datain, 6);
 636         bool initialize = flags & 0x0001;
 637         bool slow = flags & 0x0002;
 638         bool field_off = flags & 0x0004;
 639
 640         LED_A_ON();
 641         LED_C_OFF();
 642
 643         if (initialize) {
 644                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 645                 clear_trace();
 646                 set_tracing(true);
 647         }
 648
 649         LED_C_ON();
 650
 651         uint16_t num_nonces = 0;
 652         bool have_uid = false;
 653         for (uint16_t i = 0; i <= USB_CMD_DATA_SIZE - 9; ) {
 654
 655                 // Test if the action was cancelled
 656                 if(BUTTON_PRESS()) {
 657                         isOK = 2;
 658                         field_off = true;
 659                         break;
 660                 }
 661
 662                 if (!have_uid) { // need a full select cycle to get the uid first
 663                         iso14a_card_select_t card_info;
 664                         if(!iso14443a_select_card(uid, &card_info, &cuid, true, 0, true)) {
 665                                 if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Can't select card (ALL)");
 666                                 continue;
 667                         }
 668                         switch (card_info.uidlen) {
 669                                 case 4 : cascade_levels = 1; break;
 670                                 case 7 : cascade_levels = 2; break;
 671                                 case 10: cascade_levels = 3; break;
 672                                 default: break;
 673                         }
 674                         have_uid = true;
 675                 } else { // no need for anticollision. We can directly select the card
 676                         if(!iso14443a_select_card(uid, NULL, NULL, false, cascade_levels, true)) {
 677                                 if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Can't select card (UID)");
 678                                 continue;
 679                         }
 680                 }
 681
 682                 if (slow) {
 683                         timeout = GetCountSspClk() + HARDNESTED_PRE_AUTHENTICATION_LEADTIME;
 684                         while(GetCountSspClk() < timeout);
 685                 }
 686
 687                 uint32_t nt1;
 688                 if (mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, NULL)) {
 689                         if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Auth1 error");
 690                         continue;
 691                 }
 692
 693                 // nested authentication
 694                 uint16_t len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par_enc, NULL);
 695                 if (len != 4) {
 696                         if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Auth2 error len=%d", len);
 697                         continue;
 698                 }
 699
 700                 // send an incomplete dummy response in order to trigger the card's authentication failure timeout
 701                 uint8_t dummy_answer[1] = {0};
 702                 ReaderTransmit(dummy_answer, 1, NULL);
 703
 704                 timeout = GetCountSspClk() + HARDNESTED_AUTHENTICATION_TIMEOUT;
 705
 706                 num_nonces++;
 707                 if (num_nonces % 2) {
 708                         memcpy(buf+i, receivedAnswer, 4);
 709                         nt_par_enc = par_enc[0] & 0xf0;
 710                 } else {
 711                         nt_par_enc |= par_enc[0] >> 4;
 712                         memcpy(buf+i+4, receivedAnswer, 4);
 713                         memcpy(buf+i+8, &nt_par_enc, 1);
 714                         i += 9;
 715                 }
 716
 717                 // wait for the card to become ready again
 718                 while(GetCountSspClk() < timeout);
 719
 720         }
 721
 722         LED_C_OFF();
 723
 724         crypto1_destroy(pcs);
 725
 726         LED_B_ON();
 727         cmd_send(CMD_ACK, isOK, cuid, num_nonces, buf, sizeof(buf));
 728         LED_B_OFF();
 729
 730         if (MF_DBGLEVEL >= 3)   DbpString("AcquireEncryptedNonces finished");
 731
 732         if (field_off) {
 733                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 734                 LEDsoff();
 735         }
 736 }
 737
 738
 739 //-----------------------------------------------------------------------------
 740 // MIFARE nested authentication.
 741 //
 742 //-----------------------------------------------------------------------------
 743 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain)
 744 {
 745         // params
 746         uint8_t blockNo = arg0 & 0xff;
 747         uint8_t keyType = (arg0 >> 8) & 0xff;
 748         uint8_t targetBlockNo = arg1 & 0xff;
 749         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 750         uint64_t ui64Key = 0;
 751
 752         ui64Key = bytes_to_num(datain, 6);
 753
 754         // variables
 755         uint16_t rtr, i, j, len;
 756         uint16_t davg;
 757         static uint16_t dmin, dmax;
 758         uint8_t uid[10];
 759         uint32_t cuid, nt1, nt2, nttmp, nttest, ks1;
 760         uint8_t par[1];
 761         uint32_t target_nt[2], target_ks[2];
 762
 763         uint8_t par_array[4];
 764         uint16_t ncount = 0;
 765         struct Crypto1State mpcs = {0, 0};
 766         struct Crypto1State *pcs;
 767         pcs = &mpcs;
 768         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 769
 770         uint32_t auth1_time, auth2_time;
 771         static uint16_t delta_time;
 772
 773         LED_A_ON();
 774         LED_C_OFF();
 775         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 776
 777         // free eventually allocated BigBuf memory
 778         BigBuf_free();
 779
 780         if (calibrate) clear_trace();
 781         set_tracing(true);
 782
 783         // statistics on nonce distance
 784         int16_t isOK = 0;
 785         #define NESTED_MAX_TRIES 12
 786         uint16_t unsuccessfull_tries = 0;
 787         if (calibrate) {        // for first call only. Otherwise reuse previous calibration
 788                 LED_B_ON();
 789                 WDT_HIT();
 790
 791                 davg = dmax = 0;
 792                 dmin = 2000;
 793                 delta_time = 0;
 794
 795                 for (rtr = 0; rtr < 17; rtr++) {
 796
 797                         // Test if the action was cancelled
 798                         if(BUTTON_PRESS()) {
 799                                 isOK = -2;
 800                                 break;
 801                         }
 802
 803                         // prepare next select. No need to power down the card.
 804                         if(mifare_classic_halt(pcs, cuid)) {
 805                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 806                                 rtr--;
 807                                 continue;
 808                         }
 809
 810                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 811                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 812                                 rtr--;
 813                                 continue;
 814                         };
 815
 816                         auth1_time = 0;
 817                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 818                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 819                                 rtr--;
 820                                 continue;
 821                         };
 822
 823                         if (delta_time) {
 824                                 auth2_time = auth1_time + delta_time;
 825                         } else {
 826                                 auth2_time = 0;
 827                         }
 828                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
 829                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 830                                 rtr--;
 831                                 continue;
 832                         };
 833
 834                         nttmp = prng_successor(nt1, 100);                               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 835                         for (i = 101; i < 1200; i++) {
 836                                 nttmp = prng_successor(nttmp, 1);
 837                                 if (nttmp == nt2) break;
 838                         }
 839
 840                         if (i != 1200) {
 841                                 if (rtr != 0) {
 842                                         davg += i;
 843                                         dmin = MIN(dmin, i);
 844                                         dmax = MAX(dmax, i);
 845                                 }
 846                                 else {
 847                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 848                                 }
 849                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 850                         } else {
 851                                 unsuccessfull_tries++;
 852                                 if (unsuccessfull_tries > NESTED_MAX_TRIES) {   // card isn't vulnerable to nested attack (random numbers are not predictable)
 853                                         isOK = -3;
 854                                 }
 855                         }
 856                 }
 857
 858                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 859
 860                 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);
 861
 862                 dmin = davg - 2;
 863                 dmax = davg + 2;
 864
 865                 LED_B_OFF();
 866
 867         }
 868         //  -------------------------------------------------------------------------------------------------
 869
 870         LED_C_ON();
 871
 872         //  get crypted nonces for target sector
 873         for(i=0; i < 2 && !isOK; i++) { // look for exactly two different nonces
 874
 875                 target_nt[i] = 0;
 876                 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
 877
 878                         // prepare next select. No need to power down the card.
 879                         if(mifare_classic_halt(pcs, cuid)) {
 880                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 881                                 continue;
 882                         }
 883
 884                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 885                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 886                                 continue;
 887                         };
 888
 889                         auth1_time = 0;
 890                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 891                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 892                                 continue;
 893                         };
 894
 895                         // nested authentication
 896                         auth2_time = auth1_time + delta_time;
 897                         len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
 898                         if (len != 4) {
 899                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 900                                 continue;
 901                         };
 902
 903                         nt2 = bytes_to_num(receivedAnswer, 4);
 904                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
 905
 906                         // Parity validity check
 907                         for (j = 0; j < 4; j++) {
 908                                 par_array[j] = (oddparity8(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
 909                         }
 910
 911                         ncount = 0;
 912                         nttest = prng_successor(nt1, dmin - 1);
 913                         for (j = dmin; j < dmax + 1; j++) {
 914                                 nttest = prng_successor(nttest, 1);
 915                                 ks1 = nt2 ^ nttest;
 916
 917                                 if (valid_nonce(nttest, nt2, ks1, par_array)){
 918                                         if (ncount > 0) {               // we are only interested in disambiguous nonces, try again
 919                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
 920                                                 target_nt[i] = 0;
 921                                                 break;
 922                                         }
 923                                         target_nt[i] = nttest;
 924                                         target_ks[i] = ks1;
 925                                         ncount++;
 926                                         if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
 927                                                 target_nt[i] = 0;
 928                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
 929                                                 break;
 930                                         }
 931                                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 932                                 }
 933                         }
 934                         if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 935                 }
 936         }
 937
 938         LED_C_OFF();
 939
 940         //  ----------------------------- crypto1 destroy
 941         crypto1_destroy(pcs);
 942
 943         byte_t buf[4 + 4 * 4];
 944         memcpy(buf, &cuid, 4);
 945         memcpy(buf+4, &target_nt[0], 4);
 946         memcpy(buf+8, &target_ks[0], 4);
 947         memcpy(buf+12, &target_nt[1], 4);
 948         memcpy(buf+16, &target_ks[1], 4);
 949
 950         LED_B_ON();
 951         cmd_send(CMD_ACK, isOK, 0, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 952         LED_B_OFF();
 953
 954         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 955
 956         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 957         LEDsoff();
 958 }
 959
 960 //-----------------------------------------------------------------------------
 961 // MIFARE check keys. key count up to 85.
 962 //
 963 //-----------------------------------------------------------------------------
 964 void MifareChkKeys(uint16_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 965 {
 966         uint8_t blockNo = arg0 & 0xff;
 967         uint8_t keyType = (arg0 >> 8) & 0xff;
 968         bool clearTrace = arg1 & 0x01;
 969         bool multisectorCheck = arg1 & 0x02;
 970         uint8_t set14aTimeout = (arg1 >> 8) & 0xff;
 971         uint8_t keyCount = arg2;
 972
 973         // clear debug level
 974         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
 975         MF_DBGLEVEL = MF_DBG_NONE;
 976
 977         LED_A_ON();
 978         LED_B_OFF();
 979         LED_C_OFF();
 980         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 981
 982         if (clearTrace) clear_trace();
 983         set_tracing(true);
 984
 985         if (set14aTimeout){
 986                 iso14a_set_timeout(set14aTimeout * 10); // timeout: ms = x/106  35-minimum, 50-OK 106-recommended 500-safe
 987         }
 988
 989         if (multisectorCheck) {
 990                 TKeyIndex keyIndex = {{0}};
 991                 uint8_t sectorCnt = blockNo;
 992                 int res = MifareMultisectorChk(datain, keyCount, sectorCnt, keyType, OLD_MF_DBGLEVEL, &keyIndex);
 993
 994                 LED_B_ON();
 995                 if (res >= 0) {
 996                         cmd_send(CMD_ACK, 1, 0, 0, keyIndex, 80);
 997                 } else {
 998                         cmd_send(CMD_ACK, 0, 0, 0, NULL, 0);
 999                 }
1000                 LED_B_OFF();
1001         } else {
1002                 int res = MifareChkBlockKeys(datain, keyCount, blockNo, keyType, OLD_MF_DBGLEVEL);
1003
1004                 LED_B_ON();
1005                 if (res > 0) {
1006                         cmd_send(CMD_ACK, 1, 0, 0, datain + (res - 1) * 6, 6);
1007                 } else {
1008                         cmd_send(CMD_ACK, 0, 0, 0, NULL, 0);
1009                 }
1010                 LED_B_OFF();
1011         }
1012
1013         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1014         LEDsoff();
1015
1016         // restore debug level
1017         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
1018 }
1019
1020 //-----------------------------------------------------------------------------
1021 // MIFARE commands set debug level
1022 //
1023 //-----------------------------------------------------------------------------
1024 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1025         MF_DBGLEVEL = arg0;
1026         Dbprintf("Debug level: %d", MF_DBGLEVEL);
1027 }
1028
1029 //-----------------------------------------------------------------------------
1030 // Work with emulator memory
1031 //
1032 // Note: we call FpgaDownloadAndGo(FPGA_BITSTREAM_HF) here although FPGA is not
1033 // involved in dealing with emulator memory. But if it is called later, it might
1034 // destroy the Emulator Memory.
1035 //-----------------------------------------------------------------------------
1036
1037 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1038         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1039         emlClearMem();
1040 }
1041
1042 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1043         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1044         emlSetMem(datain, arg0, arg1); // data, block num, blocks count
1045 }
1046
1047 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1048         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1049         byte_t buf[USB_CMD_DATA_SIZE];
1050         emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
1051
1052         LED_B_ON();
1053         cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
1054         LED_B_OFF();
1055 }
1056
1057 //-----------------------------------------------------------------------------
1058 // Load a card into the emulator memory
1059 //
1060 //-----------------------------------------------------------------------------
1061 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1062         uint8_t numSectors = arg0;
1063         uint8_t keyType = arg1;
1064         uint64_t ui64Key = 0;
1065         uint32_t cuid;
1066         struct Crypto1State mpcs = {0, 0};
1067         struct Crypto1State *pcs;
1068         pcs = &mpcs;
1069
1070         // variables
1071         byte_t dataoutbuf[16];
1072         byte_t dataoutbuf2[16];
1073         uint8_t uid[10];
1074
1075         LED_A_ON();
1076         LED_B_OFF();
1077         LED_C_OFF();
1078         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1079
1080         clear_trace();
1081         set_tracing(false);
1082
1083         bool isOK = true;
1084
1085         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
1086                 isOK = false;
1087                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1088         }
1089
1090         for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
1091                 ui64Key = emlGetKey(sectorNo, keyType);
1092                 if (sectorNo == 0){
1093                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
1094                                 isOK = false;
1095                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth error", sectorNo);
1096                                 break;
1097                         }
1098                 } else {
1099                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
1100                                 isOK = false;
1101                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
1102                                 break;
1103                         }
1104                 }
1105
1106                 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
1107                         if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
1108                                 isOK = false;
1109                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
1110                                 break;
1111                         };
1112                         if (isOK) {
1113                                 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
1114                                         emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
1115                                 } else {        // sector trailer, keep the keys, set only the AC
1116                                         emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
1117                                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
1118                                         emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
1119                                 }
1120                         }
1121                 }
1122
1123         }
1124
1125         if(mifare_classic_halt(pcs, cuid)) {
1126                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1127         };
1128
1129         //  ----------------------------- crypto1 destroy
1130         crypto1_destroy(pcs);
1131
1132         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1133         LEDsoff();
1134
1135         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
1136
1137 }
1138
1139
1140 //-----------------------------------------------------------------------------
1141 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
1142 //
1143 //-----------------------------------------------------------------------------
1144
1145 static bool isBlockTrailer(int blockN) {
1146         if (blockN >= 0 && blockN < 128) {
1147                 return ((blockN & 0x03) == 0x03);
1148         }
1149         if (blockN >= 128 && blockN <= 256) {
1150                 return ((blockN & 0x0F) == 0x0F);
1151         }
1152         return false;
1153 }
1154
1155 void MifareCWipe(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1156         // var
1157         byte_t isOK = 0;
1158         uint32_t numBlocks = arg0;
1159         // cmdParams:
1160         // bit 0 - wipe gen1a
1161         // bit 1 - fill card with default data
1162         // bit 2 - gen1a = 0, gen1b = 1
1163         uint8_t cmdParams = arg1;
1164         bool needWipe = cmdParams & 0x01;
1165         bool needFill = cmdParams & 0x02;
1166         bool gen1b = cmdParams & 0x04;
1167
1168         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1169         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1170
1171         uint8_t block0[16] = {0x01, 0x02, 0x03, 0x04, 0x04, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xBE, 0xAF};
1172         uint8_t block1[16] = {0x00};
1173         uint8_t blockK[16] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x08, 0x77, 0x8F, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
1174         uint8_t d_block[18] = {0x00};
1175
1176         // card commands
1177         uint8_t wupC1[]       = { 0x40 };
1178         uint8_t wupC2[]       = { 0x43 };
1179         uint8_t wipeC[]       = { 0x41 };
1180
1181         // iso14443 setup
1182         LED_A_ON();
1183         LED_B_OFF();
1184         LED_C_OFF();
1185         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1186
1187         // tracing
1188         clear_trace();
1189         set_tracing(true);
1190
1191         while (true){
1192                 // wipe
1193                 if (needWipe){
1194                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1195                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1196                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1197                                 break;
1198                         };
1199
1200                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1201                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1202                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1203                                 break;
1204                         };
1205
1206                         if(mifare_classic_halt(NULL, 0)) {
1207                                 if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1208                         };
1209                 };
1210
1211                 // put default data
1212                 if (needFill){
1213                         // select commands
1214                         ReaderTransmitBitsPar(wupC1, 7, 0, NULL);
1215
1216                         // gen1b magic tag : do no issue wupC2 and don't expect 0x0a response after SELECT_UID (after getting UID from chip in 'hf mf csetuid' command)
1217                         if (!gen1b) {
1218
1219                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1220                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1221                                         break;
1222                                 };
1223
1224                                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1225                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1226                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1227                                         break;
1228                                 };
1229                         }
1230
1231                         // send blocks command
1232                         for (int blockNo = 0; blockNo < numBlocks; blockNo++) {
1233                                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1234                                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1235                                         break;
1236                                 };
1237
1238                                 // check type of block and add crc
1239                                 if (!isBlockTrailer(blockNo)){
1240                                         memcpy(d_block, block1, 16);
1241                                 } else {
1242                                         memcpy(d_block, blockK, 16);
1243                                 }
1244                                 if (blockNo == 0) {
1245                                         memcpy(d_block, block0, 16);
1246                                 }
1247                                 AppendCrc14443a(d_block, 16);
1248
1249                                 // send write command
1250                                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1251                                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1252                                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1253                                         break;
1254                                 };
1255                         }
1256
1257                         // halt
1258                         // do no issue halt command for gen1b
1259                         if (!gen1b) {
1260                                 if (mifare_classic_halt(NULL, 0)) {
1261                                         if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1262                                                 break;
1263                                 }
1264                         }
1265                 }
1266                 break;
1267         }
1268
1269         // send USB response
1270         LED_B_ON();
1271         cmd_send(CMD_ACK,isOK,0,0,NULL,0);
1272         LED_B_OFF();
1273
1274         // reset fpga
1275         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1276         LEDsoff();
1277
1278         return;
1279 }
1280
1281 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1282
1283   // params
1284         uint8_t needWipe = arg0;
1285         // bit 0 - need get UID
1286         // bit 1 - need wupC
1287         // bit 2 - need HALT after sequence
1288         // bit 3 - need init FPGA and field before sequence
1289         // bit 4 - need reset FPGA and LED
1290         // bit 6 - gen1b backdoor type
1291         uint8_t workFlags = arg1;
1292         uint8_t blockNo = arg2;
1293
1294         // card commands
1295         uint8_t wupC1[]       = { 0x40 };
1296         uint8_t wupC2[]       = { 0x43 };
1297         uint8_t wipeC[]       = { 0x41 };
1298
1299         // variables
1300         byte_t isOK = 0;
1301         uint8_t uid[10] = {0x00};
1302         uint8_t d_block[18] = {0x00};
1303         uint32_t cuid;
1304
1305         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1306         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1307
1308         // reset FPGA and LED
1309         if (workFlags & 0x08) {
1310                 LED_A_ON();
1311                 LED_B_OFF();
1312                 LED_C_OFF();
1313                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1314
1315                 clear_trace();
1316                 set_tracing(true);
1317         }
1318
1319         while (true) {
1320
1321                 // get UID from chip
1322                 if (workFlags & 0x01) {
1323                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
1324                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1325                                 // 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.
1326                                 //break;
1327                                 };
1328
1329                                 if(mifare_classic_halt(NULL, cuid)) {
1330                                         if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1331                                         // Continue, some magic tags misbehavies and send an answer to it.
1332                                         // break;
1333                                 };
1334                 };
1335
1336                 // reset chip
1337                 // Wipe command don't work with gen1b
1338                 if (needWipe && !(workFlags & 0x40)){
1339                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1340                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1341                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1342                                 break;
1343                         };
1344
1345                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1346                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1347                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1348                                 break;
1349                         };
1350
1351                         if(mifare_classic_halt(NULL, 0)) {
1352                                 if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1353                                 // Continue, some magic tags misbehavies and send an answer to it.
1354                                 // break;
1355                         };
1356                 };
1357
1358                 // write block
1359                 if (workFlags & 0x02) {
1360                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1361
1362                         // gen1b magic tag : do no issue wupC2 and don't expect 0x0a response after SELECT_UID (after getting UID from chip in 'hf mf csetuid' command)
1363                         if (!(workFlags & 0x40)) {
1364
1365                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1366                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1367                                         break;
1368                                 };
1369
1370                                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1371                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1372                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1373                                         break;
1374                                 };
1375                         }
1376                 }
1377
1378                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1379                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1380                         break;
1381                 };
1382
1383                 memcpy(d_block, datain, 16);
1384                 AppendCrc14443a(d_block, 16);
1385
1386                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1387                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1388                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1389                         break;
1390                 };
1391
1392                 if (workFlags & 0x04) {
1393                         // do no issue halt command for gen1b magic tag (#db# halt error. response len: 1)
1394                         if (!(workFlags & 0x40)) {
1395                                 if (mifare_classic_halt(NULL, 0)) {
1396                                         if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1397                                         // Continue, some magic tags misbehavies and send an answer to it.
1398                                         // break;
1399                                 }
1400                         }
1401                 }
1402
1403                 isOK = 1;
1404                 break;
1405         }
1406
1407         LED_B_ON();
1408         cmd_send(CMD_ACK,isOK,0,0,uid,4);
1409         LED_B_OFF();
1410
1411         if ((workFlags & 0x10) || (!isOK)) {
1412                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1413                 LEDsoff();
1414         }
1415 }
1416
1417
1418 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1419
1420         // params
1421         // bit 1 - need wupC
1422         // bit 2 - need HALT after sequence
1423         // bit 3 - need init FPGA and field before sequence
1424         // bit 4 - need reset FPGA and LED
1425         // bit 5 - need to set datain instead of issuing USB reply (called via ARM for StandAloneMode14a)
1426         // bit 6 - gen1b backdoor type
1427         uint8_t workFlags = arg0;
1428         uint8_t blockNo = arg2;
1429
1430         // card commands
1431         uint8_t wupC1[]       = { 0x40 };
1432         uint8_t wupC2[]       = { 0x43 };
1433
1434         // variables
1435         byte_t isOK = 0;
1436         uint8_t data[18] = {0x00};
1437         uint32_t cuid = 0;
1438
1439         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1440         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1441
1442         if (workFlags & 0x08) {
1443                 LED_A_ON();
1444                 LED_B_OFF();
1445                 LED_C_OFF();
1446                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1447
1448                 clear_trace();
1449                 set_tracing(true);
1450         }
1451
1452         while (true) {
1453                 if (workFlags & 0x02) {
1454                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1455                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1456                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1457                                 break;
1458                 };
1459                 // do no issue for gen1b magic tag
1460                 if (!(workFlags & 0x40)) {
1461                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1462                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1463                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1464                                 break;
1465                         };
1466                 }
1467         }
1468
1469                 // read block
1470                 if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1471                         if (MF_DBGLEVEL >= 1)   Dbprintf("read block send command error");
1472                         break;
1473                 };
1474                 memcpy(data, receivedAnswer, 18);
1475
1476                 if (workFlags & 0x04) {
1477                         // do no issue halt command for gen1b magic tag (#db# halt error. response len: 1)
1478                         if (!(workFlags & 0x40)) {
1479                                 if (mifare_classic_halt(NULL, cuid)) {
1480                                         if (MF_DBGLEVEL > 1)    Dbprintf("Halt error");
1481                                         // Continue, some magic tags misbehavies and send an answer to it.
1482                                         //              break;
1483                                 }
1484                         }
1485                 }
1486
1487                 isOK = 1;
1488                 break;
1489         }
1490
1491         LED_B_ON();
1492         if (workFlags & 0x20) {
1493                 if (isOK)
1494                         memcpy(datain, data, 18);
1495         }
1496         else
1497                 cmd_send(CMD_ACK,isOK,0,0,data,18);
1498         LED_B_OFF();
1499
1500         if ((workFlags & 0x10) || (!isOK)) {
1501                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1502                 LEDsoff();
1503         }
1504 }
1505
1506 void MifareCIdent(){
1507
1508         // card commands
1509         uint8_t wupC1[]       = { 0x40 };
1510         uint8_t wupC2[]       = { 0x43 };
1511
1512         // variables
1513         byte_t isOK = 0;
1514
1515         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1516         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1517
1518         LED_A_ON();
1519         LED_B_OFF();
1520         LED_C_OFF();
1521         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1522
1523         clear_trace();
1524         set_tracing(true);
1525
1526         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1527         if(ReaderReceive(receivedAnswer, receivedAnswerPar) && (receivedAnswer[0] == 0x0a)) {
1528                 isOK = 2;
1529
1530                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1531                 if(ReaderReceive(receivedAnswer, receivedAnswerPar) && (receivedAnswer[0] == 0x0a)) {
1532                         isOK = 1;
1533                 };
1534         };
1535
1536         // From iceman1001: removed the if,  since some magic tags misbehavies and send an answer to it.
1537         mifare_classic_halt(NULL, 0);
1538
1539         LED_B_ON();
1540         cmd_send(CMD_ACK,isOK,0,0,0,0);
1541         LED_B_OFF();
1542
1543         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1544         LEDsoff();
1545 }
1546
1547 //
1548 // DESFIRE
1549 //
1550
1551 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1552
1553         byte_t dataout[11] = {0x00};
1554         uint8_t uid[10] = {0x00};
1555         uint32_t cuid;
1556
1557         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1558         clear_trace();
1559
1560         int len = iso14443a_select_card(uid, NULL, &cuid, true, 0, true);
1561         if(!len) {
1562                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1563                 OnError(1);
1564                 return;
1565         };
1566
1567         if(mifare_desfire_des_auth1(cuid, dataout)){
1568                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1569                 OnError(4);
1570                 return;
1571         }
1572
1573         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1574     cmd_send(CMD_ACK,1,cuid,0,dataout, sizeof(dataout));
1575 }
1576
1577 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1578
1579         uint32_t cuid = arg0;
1580         uint8_t key[16] = {0x00};
1581         byte_t isOK = 0;
1582         byte_t dataout[12] = {0x00};
1583
1584         memcpy(key, datain, 16);
1585
1586         isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1587
1588         if( isOK) {
1589                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1590                 OnError(4);
1591                 return;
1592         }
1593
1594         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1595
1596         cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1597         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1598         LEDsoff();
1599 }
1600
1601 void OnSuccess(){
1602         pcb_blocknum = 0;
1603         ReaderTransmit(deselect_cmd, 3 , NULL);
1604         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1605         LEDsoff();
1606 }
1607
1608 void OnError(uint8_t reason){
1609         pcb_blocknum = 0;
1610         ReaderTransmit(deselect_cmd, 3 , NULL);
1611         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1612         cmd_send(CMD_ACK,0,reason,0,0,0);
1613         LEDsoff();
1614 }