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 2014,2015,2016
   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 #include "apps.h"
  18 #include "util.h"
  19 #include "crc.h"
  20 #include "protocols.h"
  21 #include "parity.h"
  22
  23 //-----------------------------------------------------------------------------
  24 // Select, Authenticate, Read a MIFARE tag.
  25 // read block
  26 //-----------------------------------------------------------------------------
  27 void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
  28 {
  29   // params
  30         uint8_t blockNo = arg0;
  31         uint8_t keyType = arg1;
  32         uint64_t ui64Key = 0;
  33         ui64Key = bytes_to_num(datain, 6);
  34
  35         // variables
  36         byte_t isOK = 0;
  37         byte_t dataoutbuf[16] = {0x00};
  38         uint8_t uid[10] = {0x00};
  39         uint32_t cuid = 0;
  40         struct Crypto1State mpcs = {0, 0};
  41         struct Crypto1State *pcs;
  42         pcs = &mpcs;
  43
  44         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  45
  46         clear_trace();
  47         set_tracing(true);
  48
  49         LED_A_ON();
  50         LED_B_OFF();
  51         LED_C_OFF();
  52
  53         while (true) {
  54                 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
  55                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
  56                         break;
  57                 };
  58
  59                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
  60                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
  61                         break;
  62                 };
  63
  64                 if(mifare_classic_readblock(pcs, cuid, blockNo, dataoutbuf)) {
  65                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read block error");
  66                         break;
  67                 };
  68
  69                 if(mifare_classic_halt(pcs, cuid)) {
  70                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
  71                         break;
  72                 };
  73
  74                 isOK = 1;
  75                 break;
  76         }
  77
  78         //  ----------------------------- crypto1 destroy
  79         crypto1_destroy(pcs);
  80
  81         if (MF_DBGLEVEL >= 2)   DbpString("READ BLOCK FINISHED");
  82
  83         LED_B_ON();
  84         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
  85         LED_B_OFF();
  86
  87         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
  88         LEDsoff();
  89 }
  90
  91 void MifareUC_Auth(uint8_t arg0, uint8_t *keybytes){
  92
  93         bool turnOffField = (arg0 == 1);
  94
  95         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
  96
  97         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  98
  99         clear_trace();
 100         set_tracing(true);
 101
 102         if(!iso14443a_select_card(NULL, NULL, NULL, true, 0)) {
 103                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
 104                 OnError(0);
 105                 return;
 106         };
 107
 108         if(!mifare_ultra_auth(keybytes)){
 109                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed");
 110                 OnError(1);
 111                 return;
 112         }
 113
 114         if (turnOffField) {
 115                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 116                 LEDsoff();
 117         }
 118         cmd_send(CMD_ACK,1,0,0,0,0);
 119 }
 120
 121 // Arg0 = BlockNo,
 122 // Arg1 = UsePwd bool
 123 // datain = PWD bytes,
 124 void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 125 {
 126         uint8_t blockNo = arg0;
 127         byte_t dataout[16] = {0x00};
 128         bool useKey = (arg1 == 1); //UL_C
 129         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 130
 131         LEDsoff();
 132         LED_A_ON();
 133         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 134
 135         clear_trace();
 136         set_tracing(true);
 137
 138         int len = iso14443a_select_card(NULL, NULL, NULL, true, 0);
 139         if(!len) {
 140                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);
 141                 OnError(1);
 142                 return;
 143         }
 144
 145         // UL-C authentication
 146         if ( useKey ) {
 147                 uint8_t key[16] = {0x00};
 148                 memcpy(key, datain, sizeof(key) );
 149
 150                 if ( !mifare_ultra_auth(key) ) {
 151                         OnError(1);
 152                         return;
 153                 }
 154         }
 155
 156         // UL-EV1 / NTAG authentication
 157         if ( usePwd ) {
 158                 uint8_t pwd[4] = {0x00};
 159                 memcpy(pwd, datain, 4);
 160                 uint8_t pack[4] = {0,0,0,0};
 161                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 162                         OnError(1);
 163                         return;
 164                 }
 165         }
 166
 167         if( mifare_ultra_readblock(blockNo, dataout) ) {
 168                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block error");
 169                 OnError(2);
 170                 return;
 171         }
 172
 173         if( mifare_ultra_halt() ) {
 174                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 175                 OnError(3);
 176                 return;
 177         }
 178
 179     cmd_send(CMD_ACK,1,0,0,dataout,16);
 180         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 181         LEDsoff();
 182 }
 183
 184 //-----------------------------------------------------------------------------
 185 // Select, Authenticate, Read a MIFARE tag.
 186 // read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
 187 //-----------------------------------------------------------------------------
 188 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 189 {
 190   // params
 191         uint8_t sectorNo = arg0;
 192         uint8_t keyType = arg1;
 193         uint64_t ui64Key = 0;
 194         ui64Key = bytes_to_num(datain, 6);
 195
 196         // variables
 197         byte_t isOK = 0;
 198         byte_t dataoutbuf[16 * 16];
 199         uint8_t uid[10] = {0x00};
 200         uint32_t cuid = 0;
 201         struct Crypto1State mpcs = {0, 0};
 202         struct Crypto1State *pcs;
 203         pcs = &mpcs;
 204
 205         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 206
 207         clear_trace();
 208         set_tracing(true);
 209
 210         LED_A_ON();
 211         LED_B_OFF();
 212         LED_C_OFF();
 213
 214         isOK = 1;
 215         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
 216                 isOK = 0;
 217                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 218         }
 219
 220
 221         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 222                 isOK = 0;
 223                 if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 224         }
 225
 226         for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 227                 if(mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf + 16 * blockNo)) {
 228                         isOK = 0;
 229                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read sector %2d block %2d error", sectorNo, blockNo);
 230                         break;
 231                 }
 232         }
 233
 234         if(mifare_classic_halt(pcs, cuid)) {
 235                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 236         }
 237
 238         if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
 239
 240         crypto1_destroy(pcs);
 241
 242         LED_B_ON();
 243         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16*NumBlocksPerSector(sectorNo));
 244         LED_B_OFF();
 245
 246         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 247         LEDsoff();
 248         set_tracing(FALSE);
 249 }
 250
 251 // arg0 = blockNo (start)
 252 // arg1 = Pages (number of blocks)
 253 // arg2 = useKey
 254 // datain = KEY bytes
 255 void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 256 {
 257         LEDsoff();
 258         LED_A_ON();
 259         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 260
 261         // free eventually allocated BigBuf memory
 262         BigBuf_free(); BigBuf_Clear_ext(false);
 263         clear_trace();
 264         set_tracing(true);
 265
 266         // params
 267         uint8_t blockNo = arg0;
 268         uint16_t blocks = arg1;
 269         bool useKey = (arg2 == 1); //UL_C
 270         bool usePwd = (arg2 == 2); //UL_EV1/NTAG
 271         uint32_t countblocks = 0;
 272         uint8_t *dataout = BigBuf_malloc(CARD_MEMORY_SIZE);
 273         if (dataout == NULL){
 274                 Dbprintf("out of memory");
 275                 OnError(1);
 276                 return;
 277         }
 278
 279         int len = iso14443a_select_card(NULL, NULL, NULL, true, 0);
 280         if (!len) {
 281                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%d)",len);
 282                 OnError(1);
 283                 return;
 284         }
 285
 286         // UL-C authentication
 287         if ( useKey ) {
 288                 uint8_t key[16] = {0x00};
 289                 memcpy(key, datain, sizeof(key) );
 290
 291                 if ( !mifare_ultra_auth(key) ) {
 292                         OnError(1);
 293                         return;
 294                 }
 295         }
 296
 297         // UL-EV1 / NTAG authentication
 298         if (usePwd) {
 299                 uint8_t pwd[4] = {0x00};
 300                 memcpy(pwd, datain, sizeof(pwd));
 301                 uint8_t pack[4] = {0,0,0,0};
 302
 303                 if (!mifare_ul_ev1_auth(pwd, pack)){
 304                         OnError(1);
 305                         return;
 306                 }
 307         }
 308
 309         for (int i = 0; i < blocks; i++){
 310                 if ((i*4) + 4 >= CARD_MEMORY_SIZE) {
 311                         Dbprintf("Data exceeds buffer!!");
 312                         break;
 313                 }
 314
 315                 len = mifare_ultra_readblock(blockNo + i, dataout + 4 * i);
 316
 317                 if (len) {
 318                         if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
 319                         // if no blocks read - error out
 320                         if (i==0){
 321                                 OnError(2);
 322                         return;
 323                         } else {
 324                                 //stop at last successful read block and return what we got
 325                                 break;
 326                         }
 327                 } else {
 328                         countblocks++;
 329                 }
 330         }
 331
 332         len = mifare_ultra_halt();
 333         if (len) {
 334                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 335                 OnError(3);
 336                 return;
 337         }
 338
 339         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Blocks read %d", countblocks);
 340
 341         countblocks *= 4;
 342
 343         cmd_send(CMD_ACK, 1, countblocks, BigBuf_max_traceLen(), 0, 0);
 344         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 345         LEDsoff();
 346         BigBuf_free();
 347         set_tracing(FALSE);
 348 }
 349
 350 //-----------------------------------------------------------------------------
 351 // Select, Authenticate, Write a MIFARE tag.
 352 // read block
 353 //-----------------------------------------------------------------------------
 354 void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 355 {
 356         // params
 357         uint8_t blockNo = arg0;
 358         uint8_t keyType = arg1;
 359         uint64_t ui64Key = 0;
 360         byte_t blockdata[16] = {0x00};
 361
 362         ui64Key = bytes_to_num(datain, 6);
 363         memcpy(blockdata, datain + 10, 16);
 364
 365         // variables
 366         byte_t isOK = 0;
 367         uint8_t uid[10] = {0x00};
 368         uint32_t cuid = 0;
 369         struct Crypto1State mpcs = {0, 0};
 370         struct Crypto1State *pcs;
 371         pcs = &mpcs;
 372
 373         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 374
 375         clear_trace();
 376         set_tracing(true);
 377
 378         LED_A_ON();
 379         LED_B_OFF();
 380         LED_C_OFF();
 381
 382         while (true) {
 383                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
 384                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 385                         break;
 386                 };
 387
 388                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 389                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 390                         break;
 391                 };
 392
 393                 if(mifare_classic_writeblock(pcs, cuid, blockNo, blockdata)) {
 394                         if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 395                         break;
 396                 };
 397
 398                 if(mifare_classic_halt(pcs, cuid)) {
 399                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 400                         break;
 401                 };
 402
 403                 isOK = 1;
 404                 break;
 405         }
 406
 407         //  ----------------------------- crypto1 destroy
 408         crypto1_destroy(pcs);
 409
 410         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 411
 412         LED_B_ON();
 413         cmd_send(CMD_ACK,isOK,0,0,0,0);
 414         LED_B_OFF();
 415
 416         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 417         LEDsoff();
 418         set_tracing(FALSE);
 419 }
 420
 421 /* // Command not needed but left for future testing
 422 void MifareUWriteBlockCompat(uint8_t arg0, uint8_t *datain)
 423 {
 424         uint8_t blockNo = arg0;
 425         byte_t blockdata[16] = {0x00};
 426
 427         memcpy(blockdata, datain, 16);
 428
 429         uint8_t uid[10] = {0x00};
 430
 431         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 432
 433         clear_trace();
 434         set_tracing(true);
 435         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 436
 437         if(!iso14443a_select_card(uid, NULL, NULL, true, 0)) {
 438                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 439                 OnError(0);
 440                 return;
 441         };
 442
 443         if(mifare_ultra_writeblock_compat(blockNo, blockdata)) {
 444                 if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 445                 OnError(0);
 446                 return; };
 447
 448         if(mifare_ultra_halt()) {
 449                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 450                 OnError(0);
 451                 return;
 452         };
 453
 454         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 455
 456         cmd_send(CMD_ACK,1,0,0,0,0);
 457         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 458         LEDsoff();
 459 }
 460 */
 461
 462 // Arg0   : Block to write to.
 463 // Arg1   : 0 = use no authentication.
 464 //          1 = use 0x1A authentication.
 465 //          2 = use 0x1B authentication.
 466 // datain : 4 first bytes is data to be written.
 467 //        : 4/16 next bytes is authentication key.
 468 void MifareUWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 469 {
 470         uint8_t blockNo = arg0;
 471         bool useKey = (arg1 == 1); //UL_C
 472         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 473         byte_t blockdata[4] = {0x00};
 474
 475         memcpy(blockdata, datain,4);
 476
 477         LEDsoff();
 478         LED_A_ON();
 479         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 480
 481         clear_trace();
 482         set_tracing(true);
 483
 484         if(!iso14443a_select_card(NULL, NULL, NULL, true, 0)) {
 485                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 486                 OnError(0);
 487                 return;
 488         };
 489
 490         // UL-C authentication
 491         if ( useKey ) {
 492                 uint8_t key[16] = {0x00};
 493                 memcpy(key, datain+4, sizeof(key) );
 494
 495                 if ( !mifare_ultra_auth(key) ) {
 496                         OnError(1);
 497                         return;
 498                 }
 499         }
 500
 501         // UL-EV1 / NTAG authentication
 502         if (usePwd) {
 503                 uint8_t pwd[4] = {0x00};
 504                 memcpy(pwd, datain+4, 4);
 505                 uint8_t pack[4] = {0,0,0,0};
 506                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 507                         OnError(1);
 508                         return;
 509                 }
 510         }
 511
 512         if(mifare_ultra_writeblock(blockNo, blockdata)) {
 513                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 514                 OnError(0);
 515                 return;
 516         };
 517
 518         if(mifare_ultra_halt()) {
 519                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 520                 OnError(0);
 521                 return;
 522         };
 523
 524         if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
 525
 526         cmd_send(CMD_ACK,1,0,0,0,0);
 527         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 528         LEDsoff();
 529         set_tracing(FALSE);
 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         set_tracing(true);
 544
 545         if(!iso14443a_select_card(NULL, NULL, NULL, true, 0)) {
 546                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 547                 OnError(0);
 548                 return;
 549         };
 550
 551         blockdata[0] = pwd[7];
 552         blockdata[1] = pwd[6];
 553         blockdata[2] = pwd[5];
 554         blockdata[3] = pwd[4];
 555         if(mifare_ultra_writeblock( 44, blockdata)) {
 556                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 557                 OnError(44);
 558                 return;
 559         };
 560
 561         blockdata[0] = pwd[3];
 562         blockdata[1] = pwd[2];
 563         blockdata[2] = pwd[1];
 564         blockdata[3] = pwd[0];
 565         if(mifare_ultra_writeblock( 45, blockdata)) {
 566                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 567                 OnError(45);
 568                 return;
 569         };
 570
 571         blockdata[0] = pwd[15];
 572         blockdata[1] = pwd[14];
 573         blockdata[2] = pwd[13];
 574         blockdata[3] = pwd[12];
 575         if(mifare_ultra_writeblock( 46, blockdata)) {
 576                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 577                 OnError(46);
 578                 return;
 579         };
 580
 581         blockdata[0] = pwd[11];
 582         blockdata[1] = pwd[10];
 583         blockdata[2] = pwd[9];
 584         blockdata[3] = pwd[8];
 585         if(mifare_ultra_writeblock( 47, blockdata)) {
 586                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 587                 OnError(47);
 588                 return;
 589         };
 590
 591         if(mifare_ultra_halt()) {
 592                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 593                 OnError(0);
 594                 return;
 595         };
 596
 597         cmd_send(CMD_ACK,1,0,0,0,0);
 598         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 599         LEDsoff();
 600         set_tracing(FALSE);
 601 }
 602
 603 // Return 1 if the nonce is invalid else return 0
 604 int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_t *parity) {
 605         return ((oddparity8((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity8((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
 606         (oddparity8((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity8((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
 607         (oddparity8((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity8((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
 608 }
 609
 610
 611 //-----------------------------------------------------------------------------
 612 // acquire encrypted nonces in order to perform the attack described in
 613 // Carlo Meijer, Roel Verdult, "Ciphertext-only Cryptanalysis on Hardened
 614 // Mifare Classic Cards" in Proceedings of the 22nd ACM SIGSAC Conference on
 615 // Computer and Communications Security, 2015
 616 //-----------------------------------------------------------------------------
 617 #define AUTHENTICATION_TIMEOUT 848                      // card times out 1ms after wrong authentication (according to NXP documentation)
 618 #define PRE_AUTHENTICATION_LEADTIME 400         // some (non standard) cards need a pause after select before they are ready for first authentication
 619
 620 void MifareAcquireEncryptedNonces(uint32_t arg0, uint32_t arg1, uint32_t flags, uint8_t *datain)
 621 {
 622         uint64_t ui64Key = 0;
 623         uint8_t uid[10] = {0x00};
 624         uint32_t cuid = 0;
 625         uint8_t cascade_levels = 0;
 626         struct Crypto1State mpcs = {0, 0};
 627         struct Crypto1State *pcs;
 628         pcs = &mpcs;
 629         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 630         int16_t isOK = 0;
 631         uint8_t par_enc[1] = {0x00};
 632         uint8_t nt_par_enc = 0;
 633         uint8_t buf[USB_CMD_DATA_SIZE] = {0x00};
 634         uint32_t timeout = 0;
 635
 636         uint8_t blockNo = arg0 & 0xff;
 637         uint8_t keyType = (arg0 >> 8) & 0xff;
 638         uint8_t targetBlockNo = arg1 & 0xff;
 639         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 640         ui64Key = bytes_to_num(datain, 6);
 641         bool initialize = flags & 0x0001;
 642         bool slow = flags & 0x0002;
 643         bool field_off = flags & 0x0004;
 644
 645         LED_A_ON();
 646         LED_C_OFF();
 647
 648         if (initialize) {
 649                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 650                 clear_trace();
 651                 set_tracing(true);
 652         }
 653
 654         LED_C_ON();
 655
 656         uint16_t num_nonces = 0;
 657         bool have_uid = false;
 658         for (uint16_t i = 0; i <= USB_CMD_DATA_SIZE - 9; ) {
 659
 660                 // Test if the action was cancelled
 661                 if(BUTTON_PRESS()) {
 662                         isOK = 2;
 663                         field_off = true;
 664                         break;
 665                 }
 666
 667                 if (!have_uid) { // need a full select cycle to get the uid first
 668                         iso14a_card_select_t card_info;
 669                         if(!iso14443a_select_card(uid, &card_info, &cuid, true, 0)) {
 670                                 if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Can't select card (ALL)");
 671                                 continue;
 672                         }
 673                         switch (card_info.uidlen) {
 674                                 case 4 : cascade_levels = 1; break;
 675                                 case 7 : cascade_levels = 2; break;
 676                                 case 10: cascade_levels = 3; break;
 677                                 default: break;
 678                         }
 679                         have_uid = true;
 680                 } else { // no need for anticollision. We can directly select the card
 681                         if(!iso14443a_select_card(uid, NULL, NULL, false, cascade_levels)) {
 682                                 if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Can't select card (UID)");
 683                                 continue;
 684                         }
 685                 }
 686
 687                 if (slow) {
 688                         timeout = GetCountSspClk() + PRE_AUTHENTICATION_LEADTIME;
 689                         while(GetCountSspClk() < timeout);
 690                 }
 691
 692                 uint32_t nt1;
 693                 if (mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, NULL)) {
 694                         if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Auth1 error");
 695                         continue;
 696                 }
 697
 698                 // nested authentication
 699                 uint16_t len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par_enc, NULL);
 700                 if (len != 4) {
 701                         if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Auth2 error len=%d", len);
 702                         continue;
 703                 }
 704
 705                 // send a dummy byte as reader response in order to trigger the cards authentication timeout
 706                 uint8_t dummy_answer = 0;
 707                 ReaderTransmit(&dummy_answer, 1, NULL);
 708                 timeout = GetCountSspClk() + AUTHENTICATION_TIMEOUT;
 709
 710                 num_nonces++;
 711                 if (num_nonces % 2) {
 712                         memcpy(buf+i, receivedAnswer, 4);
 713                         nt_par_enc = par_enc[0] & 0xf0;
 714                 } else {
 715                         nt_par_enc |= par_enc[0] >> 4;
 716                         memcpy(buf+i+4, receivedAnswer, 4);
 717                         memcpy(buf+i+8, &nt_par_enc, 1);
 718                         i += 9;
 719                 }
 720
 721                 // wait for the card to become ready again
 722                 while(GetCountSspClk() < timeout);
 723
 724         }
 725
 726         LED_C_OFF();
 727
 728         crypto1_destroy(pcs);
 729
 730         LED_B_ON();
 731         cmd_send(CMD_ACK, isOK, cuid, num_nonces, buf, sizeof(buf));
 732         LED_B_OFF();
 733
 734         if (MF_DBGLEVEL >= 3)   DbpString("AcquireEncryptedNonces finished");
 735
 736         if (field_off) {
 737                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 738                 LEDsoff();
 739                 set_tracing(FALSE);
 740         }
 741 }
 742
 743
 744 //-----------------------------------------------------------------------------
 745 // MIFARE nested authentication.
 746 //
 747 //-----------------------------------------------------------------------------
 748 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain)
 749 {
 750         // params
 751         uint8_t blockNo = arg0 & 0xff;
 752         uint8_t keyType = (arg0 >> 8) & 0xff;
 753         uint8_t targetBlockNo = arg1 & 0xff;
 754         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 755         uint64_t ui64Key = 0;
 756
 757         ui64Key = bytes_to_num(datain, 6);
 758
 759         // variables
 760         uint16_t rtr, i, j, len;
 761         uint16_t davg = 0;
 762         static uint16_t dmin, dmax;
 763         uint8_t uid[10] = {0x00};
 764         uint32_t cuid = 0, nt1, nt2, nttmp, nttest, ks1;
 765         uint8_t par[1] = {0x00};
 766         uint32_t target_nt[2] = {0x00}, target_ks[2] = {0x00};
 767
 768         uint8_t par_array[4] = {0x00};
 769         uint16_t ncount = 0;
 770         struct Crypto1State mpcs = {0, 0};
 771         struct Crypto1State *pcs;
 772         pcs = &mpcs;
 773         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 774
 775         uint32_t auth1_time, auth2_time;
 776         static uint16_t delta_time = 0;
 777
 778         LED_A_ON();
 779         LED_C_OFF();
 780         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 781
 782         // free eventually allocated BigBuf memory
 783         BigBuf_free(); BigBuf_Clear_ext(false);
 784
 785         if (calibrate) clear_trace();
 786         set_tracing(true);
 787
 788         // statistics on nonce distance
 789         int16_t isOK = 0;
 790         #define NESTED_MAX_TRIES 12
 791         uint16_t unsuccessfull_tries = 0;
 792         if (calibrate) {        // for first call only. Otherwise reuse previous calibration
 793                 LED_B_ON();
 794                 WDT_HIT();
 795
 796                 davg = dmax = 0;
 797                 dmin = 2000;
 798                 delta_time = 0;
 799
 800                 for (rtr = 0; rtr < 17; rtr++) {
 801
 802                         // Test if the action was cancelled
 803                         if(BUTTON_PRESS()) {
 804                                 isOK = -2;
 805                                 break;
 806                         }
 807
 808                         // prepare next select. No need to power down the card.
 809                         if(mifare_classic_halt(pcs, cuid)) {
 810                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 811                                 rtr--;
 812                                 continue;
 813                         }
 814
 815                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
 816                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 817                                 rtr--;
 818                                 continue;
 819                         };
 820
 821                         auth1_time = 0;
 822                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 823                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 824                                 rtr--;
 825                                 continue;
 826                         };
 827                         auth2_time = (delta_time) ? auth1_time + delta_time : 0;
 828
 829                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
 830                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 831                                 rtr--;
 832                                 continue;
 833                         };
 834
 835                         nttmp = prng_successor(nt1, 100);                               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 836                         for (i = 101; i < 1200; i++) {
 837                                 nttmp = prng_successor(nttmp, 1);
 838                                 if (nttmp == nt2) break;
 839                         }
 840
 841                         if (i != 1200) {
 842                                 if (rtr != 0) {
 843                                         davg += i;
 844                                         dmin = MIN(dmin, i);
 845                                         dmax = MAX(dmax, i);
 846                                 }
 847                                 else {
 848                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 849                                 }
 850                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 851                         } else {
 852                                 unsuccessfull_tries++;
 853                                 if (unsuccessfull_tries > NESTED_MAX_TRIES) {   // card isn't vulnerable to nested attack (random numbers are not predictable)
 854                                         isOK = -3;
 855                                 }
 856                         }
 857                 }
 858
 859                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 860
 861                 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);
 862
 863                 dmin = davg - 2;
 864                 dmax = davg + 2;
 865
 866                 LED_B_OFF();
 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)) {
 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
 898                         len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
 899                         if (len != 4) {
 900                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 901                                 continue;
 902                         };
 903
 904                         nt2 = bytes_to_num(receivedAnswer, 4);
 905                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
 906
 907                         // Parity validity check
 908 //                      for (j = 0; j < 4; j++) {
 909 //                              par_array[j] = (oddparity8(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
 910 //                      }
 911                         par_array[0] = (oddparity8(receivedAnswer[0]) != ((par[0] >> (7-0)) & 0x01));
 912                         par_array[1] = (oddparity8(receivedAnswer[1]) != ((par[0] >> (7-1)) & 0x01));
 913                         par_array[2] = (oddparity8(receivedAnswer[2]) != ((par[0] >> (7-2)) & 0x01));
 914                         par_array[3] = (oddparity8(receivedAnswer[3]) != ((par[0] >> (7-3)) & 0x01));
 915
 916                         ncount = 0;
 917                         nttest = prng_successor(nt1, dmin - 1);
 918                         for (j = dmin; j < dmax + 1; j++) {
 919                                 nttest = prng_successor(nttest, 1);
 920                                 ks1 = nt2 ^ nttest;
 921
 922                                 if (valid_nonce(nttest, nt2, ks1, par_array)){
 923                                         if (ncount > 0) {               // we are only interested in disambiguous nonces, try again
 924                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
 925                                                 target_nt[i] = 0;
 926                                                 break;
 927                                         }
 928                                         target_nt[i] = nttest;
 929                                         target_ks[i] = ks1;
 930                                         ncount++;
 931                                         if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
 932                                                 target_nt[i] = 0;
 933                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
 934                                                 break;
 935                                         }
 936                                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 937                                 }
 938                         }
 939                         if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 940                 }
 941         }
 942
 943         LED_C_OFF();
 944
 945         crypto1_destroy(pcs);
 946
 947         byte_t buf[4 + 4 * 4] = {0};
 948         memcpy(buf, &cuid, 4);
 949         memcpy(buf+4, &target_nt[0], 4);
 950         memcpy(buf+8, &target_ks[0], 4);
 951         memcpy(buf+12, &target_nt[1], 4);
 952         memcpy(buf+16, &target_ks[1], 4);
 953
 954         LED_B_ON();
 955         cmd_send(CMD_ACK, isOK, 0, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 956         LED_B_OFF();
 957
 958         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 959
 960         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 961         LEDsoff();
 962         set_tracing(FALSE);
 963 }
 964
 965 //-----------------------------------------------------------------------------
 966 // MIFARE check keys. key count up to 85.
 967 //
 968 //-----------------------------------------------------------------------------
 969 void MifareChkKeys(uint16_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain) {
 970         uint8_t blockNo = arg0 & 0xff;
 971         uint8_t keyType = (arg0 >> 8) & 0xff;
 972         bool clearTrace = arg1;
 973         uint8_t keyCount = arg2;
 974         uint64_t ui64Key = 0;
 975
 976         bool have_uid = FALSE;
 977         uint8_t cascade_levels = 0;
 978         uint32_t timeout = 0;
 979
 980         int i;
 981         byte_t isOK = 0;
 982         uint8_t uid[10] = {0x00};
 983         uint32_t cuid = 0;
 984         struct Crypto1State mpcs = {0, 0};
 985         struct Crypto1State *pcs;
 986         pcs = &mpcs;
 987
 988         // save old debuglevel, and tempory turn off dbg printing. speedissues.
 989         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
 990         MF_DBGLEVEL = MF_DBG_NONE;
 991
 992         LEDsoff();
 993         LED_A_ON();
 994
 995         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 996
 997         if (clearTrace)
 998                 clear_trace();
 999
1000         set_tracing(TRUE);
1001
1002         for (i = 0; i < keyCount; ++i) {
1003
1004                 //mifare_classic_halt(pcs, cuid);
1005
1006                 // this part is from Piwi's faster nonce collecting part in Hardnested.
1007                 if (!have_uid) { // need a full select cycle to get the uid first
1008                         iso14a_card_select_t card_info;
1009                         if(!iso14443a_select_card(uid, &card_info, &cuid, true, 0)) {
1010                                 if (MF_DBGLEVEL >= 1)   Dbprintf("ChkKeys: Can't select card (ALL)");
1011                                 break;
1012                         }
1013                         switch (card_info.uidlen) {
1014                                 case 4 : cascade_levels = 1; break;
1015                                 case 7 : cascade_levels = 2; break;
1016                                 case 10: cascade_levels = 3; break;
1017                                 default: break;
1018                         }
1019                         have_uid = TRUE;
1020                 } else { // no need for anticollision. We can directly select the card
1021                         if(!iso14443a_select_card(uid, NULL, NULL, false, cascade_levels)) {
1022                                 if (MF_DBGLEVEL >= 1)   Dbprintf("ChkKeys: Can't select card (UID)");
1023                                 continue;
1024                         }
1025                 }
1026
1027                 ui64Key = bytes_to_num(datain + i * 6, 6);
1028
1029                 if (mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
1030
1031                         uint8_t dummy_answer = 0;
1032                         ReaderTransmit(&dummy_answer, 1, NULL);
1033                         timeout = GetCountSspClk() + AUTHENTICATION_TIMEOUT;
1034
1035                         // wait for the card to become ready again
1036                         while(GetCountSspClk() < timeout);
1037
1038                         continue;
1039                 }
1040                 isOK = 1;
1041                 break;
1042         }
1043
1044         LED_B_ON();
1045     cmd_send(CMD_ACK, isOK, 0, 0, datain + i * 6, 6);
1046
1047         // restore debug level
1048         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
1049
1050         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1051         LEDsoff();
1052         set_tracing(FALSE);
1053         crypto1_destroy(pcs);
1054 }
1055
1056 //-----------------------------------------------------------------------------
1057 // MIFARE commands set debug level
1058 //
1059 //-----------------------------------------------------------------------------
1060 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1061         MF_DBGLEVEL = arg0;
1062         Dbprintf("Debug level: %d", MF_DBGLEVEL);
1063 }
1064
1065 //-----------------------------------------------------------------------------
1066 // Work with emulator memory
1067 //
1068 // Note: we call FpgaDownloadAndGo(FPGA_BITSTREAM_HF) here although FPGA is not
1069 // involved in dealing with emulator memory. But if it is called later, it might
1070 // destroy the Emulator Memory.
1071 //-----------------------------------------------------------------------------
1072
1073 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1074         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1075         emlClearMem();
1076 }
1077
1078 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1079         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1080         if (arg2==0) arg2 = 16; // backwards compat... default bytewidth
1081         emlSetMem_xt(datain, arg0, arg1, arg2); // data, block num, blocks count, block byte width
1082 }
1083
1084 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1085         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1086         byte_t buf[USB_CMD_DATA_SIZE] = {0x00};
1087         emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
1088
1089         LED_B_ON();
1090         cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
1091         LED_B_OFF();
1092 }
1093
1094 //-----------------------------------------------------------------------------
1095 // Load a card into the emulator memory
1096 //
1097 //-----------------------------------------------------------------------------
1098 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1099         uint8_t numSectors = arg0;
1100         uint8_t keyType = arg1;
1101         uint64_t ui64Key = 0;
1102         uint32_t cuid = 0;
1103         struct Crypto1State mpcs = {0, 0};
1104         struct Crypto1State *pcs;
1105         pcs = &mpcs;
1106
1107         // variables
1108         byte_t dataoutbuf[16] = {0x00};
1109         byte_t dataoutbuf2[16] = {0x00};
1110         uint8_t uid[10] = {0x00};
1111
1112         LED_A_ON();
1113         LED_B_OFF();
1114         LED_C_OFF();
1115         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1116
1117         clear_trace();
1118         set_tracing(TRUE);
1119
1120         bool isOK = true;
1121
1122         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
1123                 isOK = false;
1124                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1125         }
1126
1127         for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
1128                 ui64Key = emlGetKey(sectorNo, keyType);
1129                 if (sectorNo == 0){
1130                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
1131                                 isOK = false;
1132                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth error", sectorNo);
1133                                 break;
1134                         }
1135                 } else {
1136                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
1137                                 isOK = false;
1138                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
1139                                 break;
1140                         }
1141                 }
1142
1143                 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
1144                         if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
1145                                 isOK = false;
1146                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
1147                                 break;
1148                         }
1149                         if (isOK) {
1150                                 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
1151                                         emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
1152                                 } else {        // sector trailer, keep the keys, set only the AC
1153                                         emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
1154                                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
1155                                         emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
1156                                 }
1157                         }
1158                 }
1159
1160         }
1161
1162         if(mifare_classic_halt(pcs, cuid))
1163                 if (MF_DBGLEVEL >= 1)
1164                         Dbprintf("Halt error");
1165
1166         //  ----------------------------- crypto1 destroy
1167         crypto1_destroy(pcs);
1168
1169         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1170         LEDsoff();
1171
1172         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
1173
1174         set_tracing(FALSE);
1175 }
1176
1177
1178 //-----------------------------------------------------------------------------
1179 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
1180 //
1181 // PARAMS - workFlags
1182 // bit 0 - need get UID
1183 // bit 1 - need wupC
1184 // bit 2 - need HALT after sequence
1185 // bit 3 - need turn on FPGA before sequence
1186 // bit 4 - need turn off FPGA
1187 // bit 5 - need to set datain instead of issuing USB reply (called via ARM for StandAloneMode14a)
1188 // bit 6 - wipe tag.
1189 //-----------------------------------------------------------------------------
1190 // magic uid card generation 1 commands
1191 uint8_t wupC1[] = { MIFARE_MAGICWUPC1 };
1192 uint8_t wupC2[] = { MIFARE_MAGICWUPC2 };
1193 uint8_t wipeC[] = { MIFARE_MAGICWIPEC };
1194
1195 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint8_t *datain){
1196
1197         // params
1198         uint8_t workFlags = arg0;
1199         uint8_t blockNo = arg1;
1200
1201         // variables
1202         bool isOK = false; //assume we will get an error
1203         uint8_t errormsg = 0x00;
1204         uint8_t uid[10] = {0x00};
1205         uint8_t data[18] = {0x00};
1206         uint32_t cuid = 0;
1207
1208         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
1209         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
1210
1211         if (workFlags & MAGIC_INIT) {
1212                 LED_A_ON();
1213                 LED_B_OFF();
1214                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1215                 clear_trace();
1216                 set_tracing(TRUE);
1217         }
1218
1219         //loop doesn't loop just breaks out if error
1220         while (true) {
1221                 // read UID and return to client with write
1222                 if (workFlags & MAGIC_UID) {
1223                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
1224                                 if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("Can't select card");
1225                                 errormsg = MAGIC_UID;
1226                                 // break;
1227                         }
1228
1229                         if ( mifare_classic_halt_ex(NULL) ) break;
1230                 }
1231
1232                 // wipe tag, fill it with zeros
1233                 if (workFlags & MAGIC_WIPE){
1234                         ReaderTransmitBitsPar(wupC1, 7, NULL, NULL);
1235                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1236                                 if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("wupC1 error");
1237                                 errormsg = MAGIC_WIPE;
1238                                 break;
1239                         }
1240
1241                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1242                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1243                                 if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("wipeC error");
1244                                 errormsg = MAGIC_WIPE;
1245                                 break;
1246                         }
1247
1248                         if ( mifare_classic_halt_ex(NULL) ) break;
1249                 }
1250
1251                 // write block
1252                 if (workFlags & MAGIC_WUPC) {
1253                         ReaderTransmitBitsPar(wupC1, 7, NULL, NULL);
1254                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1255                                 if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("wupC1 error");
1256                                 errormsg = MAGIC_WUPC;
1257                                 break;
1258                         }
1259
1260                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1261                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1262                                 if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("wupC2 error");
1263                                 errormsg = MAGIC_WUPC;
1264                                 break;
1265                         }
1266                 }
1267
1268                 if ((mifare_sendcmd_short(NULL, 0, ISO14443A_CMD_WRITEBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1269                         if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("write block send command error");
1270                         errormsg = 4;
1271                         break;
1272                 }
1273
1274                 memcpy(data, datain, 16);
1275                 AppendCrc14443a(data, 16);
1276
1277                 ReaderTransmit(data, sizeof(data), NULL);
1278                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1279                         if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("write block send data error");
1280                         errormsg = 0;
1281                         break;
1282                 }
1283
1284                 if (workFlags & MAGIC_OFF)
1285                         if ( mifare_classic_halt_ex(NULL) ) break;
1286
1287                 isOK = true;
1288                 break;
1289
1290         } // end while
1291
1292         if (isOK )
1293                 cmd_send(CMD_ACK,1,0,0,uid,sizeof(uid));
1294         else
1295                 OnErrorMagic(errormsg);
1296
1297         if (workFlags & MAGIC_OFF)
1298                 OnSuccessMagic();
1299 }
1300
1301 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint8_t *datain){
1302
1303         uint8_t workFlags = arg0;
1304         uint8_t blockNo = arg1;
1305         uint8_t errormsg = 0x00;
1306         bool isOK = false; //assume we will get an error
1307
1308         // variables
1309         uint8_t data[MAX_MIFARE_FRAME_SIZE];
1310         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
1311         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
1312
1313         memset(data, 0x00, sizeof(data));
1314
1315         if (workFlags & MAGIC_INIT) {
1316                 LED_A_ON();
1317                 LED_B_OFF();
1318                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1319                 clear_trace();
1320                 set_tracing(TRUE);
1321         }
1322
1323         //loop doesn't loop just breaks out if error or done
1324         while (true) {
1325                 if (workFlags & MAGIC_WUPC) {
1326                         ReaderTransmitBitsPar(wupC1, 7, NULL, NULL);
1327                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1328                                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC1 error");
1329                                 errormsg = MAGIC_WUPC;
1330                                 break;
1331                         }
1332
1333                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1334                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1335                                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC2 error");
1336                                 errormsg = MAGIC_WUPC;
1337                                 break;
1338                         }
1339                 }
1340
1341                 // read block
1342                 if ((mifare_sendcmd_short(NULL, 0, ISO14443A_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1343                         if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("read block send command error");
1344                         errormsg = 0;
1345                         break;
1346                 }
1347
1348                 memcpy(data, receivedAnswer, sizeof(data));
1349
1350                 // send HALT
1351                 if (workFlags & MAGIC_HALT)
1352                         mifare_classic_halt_ex(NULL);
1353
1354                 isOK = true;
1355                 break;
1356         }
1357         // if MAGIC_DATAIN, the data stays on device side.
1358         if (workFlags & MAGIC_DATAIN) {
1359                 if (isOK)
1360                         memcpy(datain, data, sizeof(data));
1361         } else {
1362                 if (isOK)
1363                         cmd_send(CMD_ACK,1,0,0,data,sizeof(data));
1364                 else
1365                         OnErrorMagic(errormsg);
1366         }
1367
1368         if (workFlags & MAGIC_OFF)
1369                 OnSuccessMagic();
1370 }
1371
1372 void MifareCIdent(){
1373
1374         // variables
1375         bool isOK = true;
1376         uint8_t receivedAnswer[1] = {0x00};
1377         uint8_t receivedAnswerPar[1] = {0x00};
1378
1379         ReaderTransmitBitsPar(wupC1, 7, NULL, NULL);
1380         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1381                 isOK = false;
1382         }
1383
1384         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1385         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1386                 isOK = false;
1387         }
1388
1389         // removed the if,  since some magic tags misbehavies and send an answer to it.
1390         mifare_classic_halt(NULL, 0);
1391         cmd_send(CMD_ACK,isOK,0,0,0,0);
1392 }
1393
1394 void OnSuccessMagic(){
1395         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1396         LEDsoff();
1397         set_tracing(FALSE);
1398 }
1399 void OnErrorMagic(uint8_t reason){
1400         //          ACK, ISOK, reason,0,0,0
1401         cmd_send(CMD_ACK,0,reason,0,0,0);
1402         OnSuccessMagic();
1403 }
1404 //
1405 // DESFIRE
1406 //
1407 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1408         byte_t dataout[12] = {0x00};
1409         uint8_t uid[10] = {0x00};
1410         uint32_t cuid = 0;
1411
1412         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1413         clear_trace();
1414         set_tracing(true);
1415
1416         int len = iso14443a_select_card(uid, NULL, &cuid, true, 0);
1417         if(!len) {
1418                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1419                 OnError(1);
1420                 return;
1421         };
1422
1423         if(mifare_desfire_des_auth1(cuid, dataout)){
1424                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1425                 OnError(4);
1426                 return;
1427         }
1428
1429         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1430     cmd_send(CMD_ACK, 1, cuid, 0, dataout, sizeof(dataout));
1431 }
1432
1433 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1434
1435         uint32_t cuid = arg0;
1436         uint8_t key[16] = {0x00};
1437         byte_t dataout[12] = {0x00};
1438         byte_t isOK = 0;
1439
1440         memcpy(key, datain, 16);
1441
1442         isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1443
1444         if( isOK) {
1445             if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1446                 OnError(4);
1447                 return;
1448         }
1449
1450         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1451
1452         cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1453         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1454         LEDsoff();
1455         set_tracing(FALSE);
1456 }