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 <stdint.h>
  19
  20 #include "proxmark3.h"
  21 #include "cmd.h"
  22 #include "crapto1/crapto1.h"
  23 #include "iso14443a.h"
  24 #include "BigBuf.h"
  25 #include "mifareutil.h"
  26 #include "apps.h"
  27 #include "protocols.h"
  28 #include "util.h"
  29 #include "parity.h"
  30 #include "crc.h"
  31 #include "fpgaloader.h"
  32
  33 #define HARDNESTED_AUTHENTICATION_TIMEOUT 848           // card times out 1ms after wrong authentication (according to NXP documentation)
  34 #define HARDNESTED_PRE_AUTHENTICATION_LEADTIME 400      // some (non standard) cards need a pause after select before they are ready for first authentication
  35
  36 /*
  37 // the block number for the ISO14443-4 PCB
  38 static uint8_t pcb_blocknum = 0;
  39 // Deselect card by sending a s-block. the crc is precalced for speed
  40 static  uint8_t deselect_cmd[] = {0xc2,0xe0,0xb4};
  41
  42 static void OnSuccess(){
  43         pcb_blocknum = 0;
  44         ReaderTransmit(deselect_cmd, 3 , NULL);
  45         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
  46         LEDsoff();
  47 }
  48 */
  49
  50 static void OnError(uint8_t reason){
  51         // pcb_blocknum = 0;
  52         // ReaderTransmit(deselect_cmd, 3 , NULL);
  53         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
  54         LED_D_OFF();
  55         cmd_send(CMD_ACK,0,reason,0,0,0);
  56         LED_A_OFF();
  57 }
  58
  59 //-----------------------------------------------------------------------------
  60 // Select, Authenticate, Read a MIFARE tag.
  61 // read block
  62 //-----------------------------------------------------------------------------
  63 void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
  64 {
  65         LED_A_ON();
  66
  67         uint8_t blockNo = arg0;
  68         uint8_t keyType = arg1;
  69         uint64_t ui64Key = 0;
  70         ui64Key = bytes_to_num(datain, 6);
  71
  72         byte_t isOK = 0;
  73         byte_t dataoutbuf[16];
  74         uint8_t uid[10];
  75         uint32_t cuid;
  76         struct Crypto1State mpcs = {0, 0};
  77         struct Crypto1State *pcs;
  78         pcs = &mpcs;
  79
  80         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  81
  82         clear_trace();
  83
  84         while (true) {
  85                 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
  86                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
  87                         break;
  88                 };
  89
  90                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
  91                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
  92                         break;
  93                 };
  94
  95                 if(mifare_classic_readblock(pcs, cuid, blockNo, dataoutbuf)) {
  96                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read block error");
  97                         break;
  98                 };
  99
 100                 if(mifare_classic_halt(pcs, cuid)) {
 101                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 102                         break;
 103                 };
 104
 105                 isOK = 1;
 106                 break;
 107         }
 108
 109         //  ----------------------------- crypto1 destroy
 110         crypto1_destroy(pcs);
 111
 112         if (MF_DBGLEVEL >= 2)   DbpString("READ BLOCK FINISHED");
 113
 114         LED_B_ON();
 115         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
 116         LED_B_OFF();
 117
 118         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 119         LEDsoff();
 120 }
 121
 122 void MifareUC_Auth(uint8_t arg0, uint8_t *keybytes){
 123
 124         LED_A_ON();
 125         bool turnOffField = (arg0 == 1);
 126
 127         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 128
 129         if (!iso14443a_select_card(NULL, NULL, NULL, true, 0, true)) {
 130                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
 131                 OnError(0);
 132                 return;
 133         };
 134
 135         if (!mifare_ultra_auth(keybytes)){
 136                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed");
 137                 OnError(1);
 138                 return;
 139         }
 140
 141         if (turnOffField) {
 142                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 143                 LED_D_OFF();
 144         }
 145
 146         cmd_send(CMD_ACK,1,0,0,0,0);
 147         LED_A_OFF();
 148 }
 149
 150 // Arg0 = BlockNo,
 151 // Arg1 = UsePwd bool
 152 // datain = PWD bytes,
 153 void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 154 {
 155         LED_A_ON();
 156
 157         uint8_t blockNo = arg0;
 158         byte_t dataout[16] = {0x00};
 159         bool useKey = (arg1 == 1); //UL_C
 160         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 161
 162         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 163
 164         int len = iso14443a_select_card(NULL, NULL, NULL, true, 0, true);
 165         if(!len) {
 166                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);
 167                 OnError(1);
 168                 return;
 169         }
 170
 171         // UL-C authentication
 172         if (useKey) {
 173                 uint8_t key[16] = {0x00};
 174                 memcpy(key, datain, sizeof(key) );
 175
 176                 if ( !mifare_ultra_auth(key) ) {
 177                         OnError(1);
 178                         return;
 179                 }
 180         }
 181
 182         // UL-EV1 / NTAG authentication
 183         if (usePwd) {
 184                 uint8_t pwd[4] = {0x00};
 185                 memcpy(pwd, datain, 4);
 186                 uint8_t pack[4] = {0,0,0,0};
 187                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 188                         OnError(1);
 189                         return;
 190                 }
 191         }
 192
 193         if (mifare_ultra_readblock(blockNo, dataout)) {
 194                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block error");
 195                 OnError(2);
 196                 return;
 197         }
 198
 199         if (mifare_ultra_halt()) {
 200                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 201                 OnError(3);
 202                 return;
 203         }
 204
 205         cmd_send(CMD_ACK,1,0,0,dataout,16);
 206         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 207         LED_D_OFF();
 208         LED_A_OFF();
 209 }
 210
 211 //-----------------------------------------------------------------------------
 212 // Select, Authenticate, Read a MIFARE tag.
 213 // read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
 214 //-----------------------------------------------------------------------------
 215 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 216 {
 217   // params
 218         uint8_t sectorNo = arg0;
 219         uint8_t keyType = arg1;
 220         uint64_t ui64Key = 0;
 221         ui64Key = bytes_to_num(datain, 6);
 222
 223         // variables
 224         byte_t isOK = 0;
 225         byte_t dataoutbuf[16 * 16];
 226         uint8_t uid[10];
 227         uint32_t cuid;
 228         struct Crypto1State mpcs = {0, 0};
 229         struct Crypto1State *pcs;
 230         pcs = &mpcs;
 231
 232         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 233
 234         clear_trace();
 235
 236         LED_A_ON();
 237         LED_B_OFF();
 238         LED_C_OFF();
 239
 240         isOK = 1;
 241         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 242                 isOK = 0;
 243                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 244         }
 245
 246
 247         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 248                 isOK = 0;
 249                 if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 250         }
 251
 252         for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 253                 if(mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf + 16 * blockNo)) {
 254                         isOK = 0;
 255                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read sector %2d block %2d error", sectorNo, blockNo);
 256                         break;
 257                 }
 258         }
 259
 260         if(mifare_classic_halt(pcs, cuid)) {
 261                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 262         }
 263
 264         //  ----------------------------- crypto1 destroy
 265         crypto1_destroy(pcs);
 266
 267         if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
 268
 269         LED_B_ON();
 270         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16*NumBlocksPerSector(sectorNo));
 271         LED_B_OFF();
 272
 273         // Thats it...
 274         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 275         LEDsoff();
 276 }
 277
 278 // arg0 = blockNo (start)
 279 // arg1 = Pages (number of blocks)
 280 // arg2 = useKey
 281 // datain = KEY bytes
 282 void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 283 {
 284         LED_A_ON();
 285         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 286
 287         // free eventually allocated BigBuf memory
 288         BigBuf_free();
 289
 290         // params
 291         uint8_t blockNo = arg0;
 292         uint16_t blocks = arg1;
 293         bool useKey = (arg2 == 1); //UL_C
 294         bool usePwd = (arg2 == 2); //UL_EV1/NTAG
 295         uint32_t countblocks = 0;
 296         uint8_t *dataout = BigBuf_malloc(CARD_MEMORY_SIZE);
 297         if (dataout == NULL){
 298                 Dbprintf("out of memory");
 299                 OnError(1);
 300                 return;
 301         }
 302
 303         int len = iso14443a_select_card(NULL, NULL, NULL, true, 0, true);
 304         if (!len) {
 305                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%d)",len);
 306                 OnError(1);
 307                 return;
 308         }
 309
 310         // UL-C authentication
 311         if (useKey) {
 312                 uint8_t key[16] = {0x00};
 313                 memcpy(key, datain, sizeof(key) );
 314
 315                 if ( !mifare_ultra_auth(key) ) {
 316                         OnError(1);
 317                         return;
 318                 }
 319         }
 320
 321         // UL-EV1 / NTAG authentication
 322         if (usePwd) {
 323                 uint8_t pwd[4] = {0x00};
 324                 memcpy(pwd, datain, sizeof(pwd));
 325                 uint8_t pack[4] = {0,0,0,0};
 326
 327                 if (!mifare_ul_ev1_auth(pwd, pack)){
 328                         OnError(1);
 329                         return;
 330                 }
 331         }
 332
 333         for (int i = 0; i < blocks; i++){
 334                 if ((i*4) + 4 >= CARD_MEMORY_SIZE) {
 335                         Dbprintf("Data exceeds buffer!!");
 336                         break;
 337                 }
 338
 339                 len = mifare_ultra_readblock(blockNo + i, dataout + 4 * i);
 340
 341                 if (len) {
 342                         if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
 343                         // if no blocks read - error out
 344                         if (i==0){
 345                                 OnError(2);
 346                                 return;
 347                         } else {
 348                                 //stop at last successful read block and return what we got
 349                                 break;
 350                         }
 351                 } else {
 352                         countblocks++;
 353                 }
 354         }
 355
 356         len = mifare_ultra_halt();
 357         if (len) {
 358                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 359                 OnError(3);
 360                 return;
 361         }
 362
 363         if (MF_DBGLEVEL >= MF_DBG_DEBUG) Dbprintf("Blocks read %d", countblocks);
 364
 365         cmd_send(CMD_ACK, 1, countblocks*4, BigBuf_max_traceLen(), 0, 0);
 366
 367         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 368         LED_D_OFF();
 369         BigBuf_free();
 370         LED_A_OFF();
 371 }
 372
 373 //-----------------------------------------------------------------------------
 374 // Select, Authenticate, Write a MIFARE tag.
 375 // read block
 376 //-----------------------------------------------------------------------------
 377 void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 378 {
 379         // params
 380         uint8_t blockNo = arg0;
 381         uint8_t keyType = arg1;
 382         uint64_t ui64Key = 0;
 383         byte_t blockdata[16];
 384
 385         ui64Key = bytes_to_num(datain, 6);
 386         memcpy(blockdata, datain + 10, 16);
 387
 388         // variables
 389         byte_t isOK = 0;
 390         uint8_t uid[10];
 391         uint32_t cuid;
 392         struct Crypto1State mpcs = {0, 0};
 393         struct Crypto1State *pcs;
 394         pcs = &mpcs;
 395
 396         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 397
 398         clear_trace();
 399
 400         LED_A_ON();
 401         LED_B_OFF();
 402         LED_C_OFF();
 403
 404         while (true) {
 405                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 406                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 407                         break;
 408                 };
 409
 410                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 411                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 412                         break;
 413                 };
 414
 415                 if(mifare_classic_writeblock(pcs, cuid, blockNo, blockdata)) {
 416                         if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 417                         break;
 418                 };
 419
 420                 if(mifare_classic_halt(pcs, cuid)) {
 421                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 422                         break;
 423                 };
 424
 425                 isOK = 1;
 426                 break;
 427         }
 428
 429         //  ----------------------------- crypto1 destroy
 430         crypto1_destroy(pcs);
 431
 432         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 433
 434         LED_B_ON();
 435         cmd_send(CMD_ACK,isOK,0,0,0,0);
 436         LED_B_OFF();
 437
 438
 439         // Thats it...
 440         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 441         LEDsoff();
 442 }
 443
 444 /* // Command not needed but left for future testing
 445 void MifareUWriteBlockCompat(uint8_t arg0, uint8_t *datain)
 446 {
 447         uint8_t blockNo = arg0;
 448         byte_t blockdata[16] = {0x00};
 449
 450         memcpy(blockdata, datain, 16);
 451
 452         uint8_t uid[10] = {0x00};
 453
 454         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 455
 456         clear_trace();
 457         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 458
 459         if(!iso14443a_select_card(uid, NULL, NULL, true, 0)) {
 460                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 461                 OnError(0);
 462                 return;
 463         };
 464
 465         if(mifare_ultra_writeblock_compat(blockNo, blockdata)) {
 466                 if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 467                 OnError(0);
 468                 return; };
 469
 470         if(mifare_ultra_halt()) {
 471                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 472                 OnError(0);
 473                 return;
 474         };
 475
 476         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 477
 478         cmd_send(CMD_ACK,1,0,0,0,0);
 479         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 480         LEDsoff();
 481 }
 482 */
 483
 484 // Arg0   : Block to write to.
 485 // Arg1   : 0 = use no authentication.
 486 //          1 = use 0x1A authentication.
 487 //          2 = use 0x1B authentication.
 488 // datain : 4 first bytes is data to be written.
 489 //        : 4/16 next bytes is authentication key.
 490 void MifareUWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 491 {
 492         uint8_t blockNo = arg0;
 493         bool useKey = (arg1 == 1); //UL_C
 494         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 495         byte_t blockdata[4] = {0x00};
 496
 497         memcpy(blockdata, datain,4);
 498
 499         LEDsoff();
 500         LED_A_ON();
 501         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 502
 503         clear_trace();
 504
 505         if(!iso14443a_select_card(NULL, NULL, NULL, true, 0, true)) {
 506                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 507                 OnError(0);
 508                 return;
 509         };
 510
 511         // UL-C authentication
 512         if ( useKey ) {
 513                 uint8_t key[16] = {0x00};
 514                 memcpy(key, datain+4, sizeof(key) );
 515
 516                 if ( !mifare_ultra_auth(key) ) {
 517                         OnError(1);
 518                         return;
 519                 }
 520         }
 521
 522         // UL-EV1 / NTAG authentication
 523         if (usePwd) {
 524                 uint8_t pwd[4] = {0x00};
 525                 memcpy(pwd, datain+4, 4);
 526                 uint8_t pack[4] = {0,0,0,0};
 527                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 528                         OnError(1);
 529                         return;
 530                 }
 531         }
 532
 533         if(mifare_ultra_writeblock(blockNo, blockdata)) {
 534                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 535                 OnError(0);
 536                 return;
 537         };
 538
 539         if(mifare_ultra_halt()) {
 540                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 541                 OnError(0);
 542                 return;
 543         };
 544
 545         if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
 546
 547         cmd_send(CMD_ACK,1,0,0,0,0);
 548         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 549         LEDsoff();
 550 }
 551
 552 void MifareUSetPwd(uint8_t arg0, uint8_t *datain){
 553
 554         uint8_t pwd[16] = {0x00};
 555         byte_t blockdata[4] = {0x00};
 556
 557         memcpy(pwd, datain, 16);
 558
 559         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 560         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 561
 562         clear_trace();
 563
 564         if(!iso14443a_select_card(NULL, NULL, NULL, true, 0, true)) {
 565                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 566                 OnError(0);
 567                 return;
 568         };
 569
 570         blockdata[0] = pwd[7];
 571         blockdata[1] = pwd[6];
 572         blockdata[2] = pwd[5];
 573         blockdata[3] = pwd[4];
 574         if(mifare_ultra_writeblock( 44, blockdata)) {
 575                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 576                 OnError(44);
 577                 return;
 578         };
 579
 580         blockdata[0] = pwd[3];
 581         blockdata[1] = pwd[2];
 582         blockdata[2] = pwd[1];
 583         blockdata[3] = pwd[0];
 584         if(mifare_ultra_writeblock( 45, blockdata)) {
 585                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 586                 OnError(45);
 587                 return;
 588         };
 589
 590         blockdata[0] = pwd[15];
 591         blockdata[1] = pwd[14];
 592         blockdata[2] = pwd[13];
 593         blockdata[3] = pwd[12];
 594         if(mifare_ultra_writeblock( 46, blockdata)) {
 595                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 596                 OnError(46);
 597                 return;
 598         };
 599
 600         blockdata[0] = pwd[11];
 601         blockdata[1] = pwd[10];
 602         blockdata[2] = pwd[9];
 603         blockdata[3] = pwd[8];
 604         if(mifare_ultra_writeblock( 47, blockdata)) {
 605                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 606                 OnError(47);
 607                 return;
 608         };
 609
 610         if(mifare_ultra_halt()) {
 611                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 612                 OnError(0);
 613                 return;
 614         };
 615
 616         cmd_send(CMD_ACK,1,0,0,0,0);
 617         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 618         LEDsoff();
 619 }
 620
 621 // Return 1 if the nonce is invalid else return 0
 622 int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_t *parity) {
 623         return ((oddparity8((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity8((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
 624         (oddparity8((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity8((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
 625         (oddparity8((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity8((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
 626 }
 627
 628
 629 //-----------------------------------------------------------------------------
 630 // acquire encrypted nonces in order to perform the attack described in
 631 // Carlo Meijer, Roel Verdult, "Ciphertext-only Cryptanalysis on Hardened
 632 // Mifare Classic Cards" in Proceedings of the 22nd ACM SIGSAC Conference on
 633 // Computer and Communications Security, 2015
 634 //-----------------------------------------------------------------------------
 635 void MifareAcquireEncryptedNonces(uint32_t arg0, uint32_t arg1, uint32_t flags, uint8_t *datain)
 636 {
 637         uint64_t ui64Key = 0;
 638         uint8_t uid[10];
 639         uint32_t cuid;
 640         uint8_t cascade_levels = 0;
 641         struct Crypto1State mpcs = {0, 0};
 642         struct Crypto1State *pcs;
 643         pcs = &mpcs;
 644         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 645         int16_t isOK = 0;
 646         uint8_t par_enc[1];
 647         uint8_t nt_par_enc = 0;
 648         uint8_t buf[USB_CMD_DATA_SIZE];
 649         uint32_t timeout;
 650
 651         uint8_t blockNo = arg0 & 0xff;
 652         uint8_t keyType = (arg0 >> 8) & 0xff;
 653         uint8_t targetBlockNo = arg1 & 0xff;
 654         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 655         ui64Key = bytes_to_num(datain, 6);
 656         bool initialize = flags & 0x0001;
 657         bool slow = flags & 0x0002;
 658         bool field_off = flags & 0x0004;
 659
 660         LED_A_ON();
 661         LED_C_OFF();
 662
 663         if (initialize) {
 664                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 665                 clear_trace();
 666                 set_tracing(true);
 667         }
 668
 669         LED_C_ON();
 670
 671         uint16_t num_nonces = 0;
 672         bool have_uid = false;
 673         for (uint16_t i = 0; i <= USB_CMD_DATA_SIZE - 9; ) {
 674
 675                 // Test if the action was cancelled
 676                 if(BUTTON_PRESS()) {
 677                         isOK = 2;
 678                         field_off = true;
 679                         break;
 680                 }
 681
 682                 if (!have_uid) { // need a full select cycle to get the uid first
 683                         iso14a_card_select_t card_info;
 684                         if(!iso14443a_select_card(uid, &card_info, &cuid, true, 0, true)) {
 685                                 if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Can't select card (ALL)");
 686                                 continue;
 687                         }
 688                         switch (card_info.uidlen) {
 689                                 case 4 : cascade_levels = 1; break;
 690                                 case 7 : cascade_levels = 2; break;
 691                                 case 10: cascade_levels = 3; break;
 692                                 default: break;
 693                         }
 694                         have_uid = true;
 695                 } else { // no need for anticollision. We can directly select the card
 696                         if(!iso14443a_select_card(uid, NULL, NULL, false, cascade_levels, true)) {
 697                                 if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Can't select card (UID)");
 698                                 continue;
 699                         }
 700                 }
 701
 702                 if (slow) {
 703                         timeout = GetCountSspClk() + HARDNESTED_PRE_AUTHENTICATION_LEADTIME;
 704                         while(GetCountSspClk() < timeout);
 705                 }
 706
 707                 uint32_t nt1;
 708                 if (mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, NULL)) {
 709                         if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Auth1 error");
 710                         continue;
 711                 }
 712
 713                 // nested authentication
 714                 uint16_t len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par_enc, NULL);
 715                 if (len != 4) {
 716                         if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Auth2 error len=%d", len);
 717                         continue;
 718                 }
 719
 720                 // send an incomplete dummy response in order to trigger the card's authentication failure timeout
 721                 uint8_t dummy_answer[1] = {0};
 722                 ReaderTransmit(dummy_answer, 1, NULL);
 723
 724                 timeout = GetCountSspClk() + HARDNESTED_AUTHENTICATION_TIMEOUT;
 725
 726                 num_nonces++;
 727                 if (num_nonces % 2) {
 728                         memcpy(buf+i, receivedAnswer, 4);
 729                         nt_par_enc = par_enc[0] & 0xf0;
 730                 } else {
 731                         nt_par_enc |= par_enc[0] >> 4;
 732                         memcpy(buf+i+4, receivedAnswer, 4);
 733                         memcpy(buf+i+8, &nt_par_enc, 1);
 734                         i += 9;
 735                 }
 736
 737                 // wait for the card to become ready again
 738                 while(GetCountSspClk() < timeout);
 739
 740         }
 741
 742         LED_C_OFF();
 743
 744         crypto1_destroy(pcs);
 745
 746         LED_B_ON();
 747         cmd_send(CMD_ACK, isOK, cuid, num_nonces, buf, sizeof(buf));
 748         LED_B_OFF();
 749
 750         if (MF_DBGLEVEL >= 3)   DbpString("AcquireEncryptedNonces finished");
 751
 752         if (field_off) {
 753                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 754                 LEDsoff();
 755         }
 756 }
 757
 758
 759 //-----------------------------------------------------------------------------
 760 // MIFARE nested authentication.
 761 //
 762 //-----------------------------------------------------------------------------
 763 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain)
 764 {
 765         // params
 766         uint8_t blockNo = arg0 & 0xff;
 767         uint8_t keyType = (arg0 >> 8) & 0xff;
 768         uint8_t targetBlockNo = arg1 & 0xff;
 769         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 770         uint64_t ui64Key = 0;
 771
 772         ui64Key = bytes_to_num(datain, 6);
 773
 774         // variables
 775         uint16_t rtr, i, j, len;
 776         uint16_t davg;
 777         static uint16_t dmin, dmax;
 778         uint8_t uid[10];
 779         uint32_t cuid, nt1, nt2, nttmp, nttest, ks1;
 780         uint8_t par[1];
 781         uint32_t target_nt[2], target_ks[2];
 782
 783         uint8_t par_array[4];
 784         uint16_t ncount = 0;
 785         struct Crypto1State mpcs = {0, 0};
 786         struct Crypto1State *pcs;
 787         pcs = &mpcs;
 788         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 789
 790         uint32_t auth1_time, auth2_time;
 791         static uint16_t delta_time;
 792
 793         LED_A_ON();
 794         LED_C_OFF();
 795         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 796
 797         // free eventually allocated BigBuf memory
 798         BigBuf_free();
 799
 800         if (calibrate) clear_trace();
 801         set_tracing(true);
 802
 803         // statistics on nonce distance
 804         int16_t isOK = 0;
 805         #define NESTED_MAX_TRIES 12
 806         uint16_t unsuccessfull_tries = 0;
 807         if (calibrate) {    // for first call only. Otherwise reuse previous calibration
 808                 LED_B_ON();
 809                 WDT_HIT();
 810
 811                 davg = dmax = 0;
 812                 dmin = 2000;
 813                 delta_time = 0;
 814
 815                 for (rtr = 0; rtr < 17; rtr++) {
 816
 817                         // Test if the action was cancelled
 818                         if(BUTTON_PRESS()) {
 819                                 isOK = -2;
 820                                 break;
 821                         }
 822
 823                         // prepare next select. No need to power down the card.
 824                         if(mifare_classic_halt(pcs, cuid)) {
 825                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 826                                 rtr--;
 827                                 continue;
 828                         }
 829
 830                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 831                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 832                                 rtr--;
 833                                 continue;
 834                         };
 835
 836                         auth1_time = 0;
 837                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 838                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 839                                 rtr--;
 840                                 continue;
 841                         };
 842
 843                         if (delta_time) {
 844                                 auth2_time = auth1_time + delta_time;
 845                         } else {
 846                                 auth2_time = 0;
 847                         }
 848                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
 849                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 850                                 rtr--;
 851                                 continue;
 852                         };
 853
 854                         nttmp = prng_successor(nt1, 100);               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 855                         for (i = 101; i < 1200; i++) {
 856                                 nttmp = prng_successor(nttmp, 1);
 857                                 if (nttmp == nt2) break;
 858                         }
 859
 860                         if (i != 1200) {
 861                                 if (rtr != 0) {
 862                                         davg += i;
 863                                         dmin = MIN(dmin, i);
 864                                         dmax = MAX(dmax, i);
 865                                 }
 866                                 else {
 867                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 868                                 }
 869                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 870                         } else {
 871                                 unsuccessfull_tries++;
 872                                 if (unsuccessfull_tries > NESTED_MAX_TRIES) {   // card isn't vulnerable to nested attack (random numbers are not predictable)
 873                                         isOK = -3;
 874                                 }
 875                         }
 876                 }
 877
 878                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 879
 880                 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);
 881
 882                 dmin = davg - 2;
 883                 dmax = davg + 2;
 884
 885                 LED_B_OFF();
 886
 887         }
 888         //  -------------------------------------------------------------------------------------------------
 889
 890         LED_C_ON();
 891
 892         //  get crypted nonces for target sector
 893         for(i=0; i < 2 && !isOK; i++) { // look for exactly two different nonces
 894
 895                 target_nt[i] = 0;
 896                 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
 897
 898                         // prepare next select. No need to power down the card.
 899                         if(mifare_classic_halt(pcs, cuid)) {
 900                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 901                                 continue;
 902                         }
 903
 904                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 905                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 906                                 continue;
 907                         };
 908
 909                         auth1_time = 0;
 910                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 911                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 912                                 continue;
 913                         };
 914
 915                         // nested authentication
 916                         auth2_time = auth1_time + delta_time;
 917                         len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
 918                         if (len != 4) {
 919                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 920                                 continue;
 921                         };
 922
 923                         nt2 = bytes_to_num(receivedAnswer, 4);
 924                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
 925
 926                         // Parity validity check
 927                         for (j = 0; j < 4; j++) {
 928                                 par_array[j] = (oddparity8(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
 929                         }
 930
 931                         ncount = 0;
 932                         nttest = prng_successor(nt1, dmin - 1);
 933                         for (j = dmin; j < dmax + 1; j++) {
 934                                 nttest = prng_successor(nttest, 1);
 935                                 ks1 = nt2 ^ nttest;
 936
 937                                 if (valid_nonce(nttest, nt2, ks1, par_array)){
 938                                         if (ncount > 0) {       // we are only interested in disambiguous nonces, try again
 939                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
 940                                                 target_nt[i] = 0;
 941                                                 break;
 942                                         }
 943                                         target_nt[i] = nttest;
 944                                         target_ks[i] = ks1;
 945                                         ncount++;
 946                                         if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
 947                                                 target_nt[i] = 0;
 948                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
 949                                                 break;
 950                                         }
 951                                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 952                                 }
 953                         }
 954                         if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 955                 }
 956         }
 957
 958         LED_C_OFF();
 959
 960         //  ----------------------------- crypto1 destroy
 961         crypto1_destroy(pcs);
 962
 963         byte_t buf[4 + 4 * 4];
 964         memcpy(buf, &cuid, 4);
 965         memcpy(buf+4, &target_nt[0], 4);
 966         memcpy(buf+8, &target_ks[0], 4);
 967         memcpy(buf+12, &target_nt[1], 4);
 968         memcpy(buf+16, &target_ks[1], 4);
 969
 970         LED_B_ON();
 971         cmd_send(CMD_ACK, isOK, 0, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 972         LED_B_OFF();
 973
 974         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 975
 976         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 977         LEDsoff();
 978 }
 979
 980 //-----------------------------------------------------------------------------
 981 // MIFARE check keys. key count up to 85.
 982 //
 983 //-----------------------------------------------------------------------------
 984 void MifareChkKeys(uint16_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 985 {
 986         uint8_t blockNo = arg0 & 0xff;
 987         uint8_t keyType = (arg0 >> 8) & 0xff;
 988         bool clearTrace = arg1 & 0x01;
 989         bool multisectorCheck = arg1 & 0x02;
 990         uint8_t set14aTimeout = (arg1 >> 8) & 0xff;
 991         uint8_t keyCount = arg2;
 992
 993         LED_A_ON();
 994
 995         // clear debug level
 996         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
 997         MF_DBGLEVEL = MF_DBG_NONE;
 998
 999         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1000
1001         if (clearTrace) {
1002                 clear_trace();
1003         }
1004         set_tracing(true);
1005
1006         if (set14aTimeout){
1007                 iso14a_set_timeout(set14aTimeout * 10); // timeout: ms = x/106  35-minimum, 50-OK 106-recommended 500-safe
1008         }
1009
1010         if (multisectorCheck) {
1011                 TKeyIndex keyIndex = {{0}};
1012                 uint8_t sectorCnt = blockNo;
1013                 int res = MifareMultisectorChk(datain, keyCount, sectorCnt, keyType, OLD_MF_DBGLEVEL, &keyIndex);
1014
1015                 if (res >= 0) {
1016                         cmd_send(CMD_ACK, 1, 0, 0, keyIndex, 80);
1017                 } else {
1018                         cmd_send(CMD_ACK, 0, 0, 0, NULL, 0);
1019                 }
1020         } else {
1021                 int res = MifareChkBlockKeys(datain, keyCount, blockNo, keyType, OLD_MF_DBGLEVEL);
1022
1023                 if (res > 0) {
1024                         cmd_send(CMD_ACK, 1, 0, 0, datain + (res - 1) * 6, 6);
1025                 } else {
1026                         cmd_send(CMD_ACK, 0, 0, 0, NULL, 0);
1027                 }
1028         }
1029
1030         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1031         LED_D_OFF();
1032
1033         // restore debug level
1034         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
1035
1036         LED_A_OFF();
1037 }
1038
1039
1040 //-----------------------------------------------------------------------------
1041 // MIFARE Personalize UID. Only for Mifare Classic EV1 7Byte UID
1042 //-----------------------------------------------------------------------------
1043 void MifarePersonalizeUID(uint8_t keyType, uint8_t perso_option, uint8_t *data) {
1044
1045         uint8_t uid[10];
1046         uint32_t cuid;
1047         struct Crypto1State mpcs = {0, 0};
1048         struct Crypto1State *pcs;
1049         pcs = &mpcs;
1050
1051         LED_A_ON();
1052         clear_trace();
1053
1054         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1055
1056         bool isOK = false;
1057         while (true) {
1058                 if (!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
1059                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1060                         break;
1061                 }
1062
1063                 uint8_t block_number = 0;
1064                 uint64_t key = bytes_to_num(data, 6);
1065                 if (mifare_classic_auth(pcs, cuid, block_number, keyType, key, AUTH_FIRST)) {
1066                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
1067                         break;
1068                 }
1069
1070                 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1071                 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1072                 int len = mifare_sendcmd_short(pcs, true, MIFARE_EV1_PERSONAL_UID, perso_option, receivedAnswer, receivedAnswerPar, NULL);
1073                 if (len != 1 || receivedAnswer[0] != CARD_ACK) {
1074                         if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
1075                         break;;
1076                 }
1077                 isOK = true;
1078                 break;
1079         }
1080
1081         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1082         LED_D_OFF();
1083
1084         crypto1_destroy(pcs);
1085
1086         if (MF_DBGLEVEL >= 2)   DbpString("PERSONALIZE UID FINISHED");
1087
1088         cmd_send(CMD_ACK, isOK, 0, 0, NULL, 0);
1089
1090         LED_A_OFF();
1091 }
1092
1093 //-----------------------------------------------------------------------------
1094 // MIFARE commands set debug level
1095 //
1096 //-----------------------------------------------------------------------------
1097 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1098         MF_DBGLEVEL = arg0;
1099         Dbprintf("Debug level: %d", MF_DBGLEVEL);
1100 }
1101
1102 //-----------------------------------------------------------------------------
1103 // Work with emulator memory
1104 //
1105 // Note: we call FpgaDownloadAndGo(FPGA_BITSTREAM_HF) here although FPGA is not
1106 // involved in dealing with emulator memory. But if it is called later, it might
1107 // destroy the Emulator Memory.
1108 //-----------------------------------------------------------------------------
1109
1110 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1111         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1112         emlClearMem();
1113 }
1114
1115 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1116         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1117         emlSetMem(datain, arg0, arg1); // data, block num, blocks count
1118 }
1119
1120 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1121         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1122         byte_t buf[USB_CMD_DATA_SIZE];
1123         emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
1124
1125         LED_B_ON();
1126         cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
1127         LED_B_OFF();
1128 }
1129
1130 //-----------------------------------------------------------------------------
1131 // Load a card into the emulator memory
1132 //
1133 //-----------------------------------------------------------------------------
1134 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1135         uint8_t numSectors = arg0;
1136         uint8_t keyType = arg1;
1137         uint64_t ui64Key = 0;
1138         uint32_t cuid;
1139         struct Crypto1State mpcs = {0, 0};
1140         struct Crypto1State *pcs;
1141         pcs = &mpcs;
1142
1143         // variables
1144         byte_t dataoutbuf[16];
1145         byte_t dataoutbuf2[16];
1146         uint8_t uid[10];
1147
1148         LED_A_ON();
1149         LED_B_OFF();
1150         LED_C_OFF();
1151         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1152
1153         clear_trace();
1154         set_tracing(false);
1155
1156         bool isOK = true;
1157
1158         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
1159                 isOK = false;
1160                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1161         }
1162
1163         for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
1164                 ui64Key = emlGetKey(sectorNo, keyType);
1165                 if (sectorNo == 0){
1166                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
1167                                 isOK = false;
1168                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth error", sectorNo);
1169                                 break;
1170                         }
1171                 } else {
1172                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
1173                                 isOK = false;
1174                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
1175                                 break;
1176                         }
1177                 }
1178
1179                 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
1180                         if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
1181                                 isOK = false;
1182                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
1183                                 break;
1184                         };
1185                         if (isOK) {
1186                                 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
1187                                         emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
1188                                 } else {    // sector trailer, keep the keys, set only the AC
1189                                         emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
1190                                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
1191                                         emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
1192                                 }
1193                         }
1194                 }
1195
1196         }
1197
1198         if(mifare_classic_halt(pcs, cuid)) {
1199                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1200         };
1201
1202         //  ----------------------------- crypto1 destroy
1203         crypto1_destroy(pcs);
1204
1205         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1206         LEDsoff();
1207
1208         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
1209
1210 }
1211
1212
1213 //-----------------------------------------------------------------------------
1214 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
1215 //
1216 //-----------------------------------------------------------------------------
1217
1218 static bool isBlockTrailer(int blockN) {
1219         if (blockN >= 0 && blockN < 128) {
1220                 return ((blockN & 0x03) == 0x03);
1221         }
1222         if (blockN >= 128 && blockN <= 256) {
1223                 return ((blockN & 0x0F) == 0x0F);
1224         }
1225         return false;
1226 }
1227
1228 void MifareCWipe(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1229         // var
1230         byte_t isOK = 0;
1231         uint32_t numBlocks = arg0;
1232         // cmdParams:
1233         // bit 0 - wipe gen1a
1234         // bit 1 - fill card with default data
1235         // bit 2 - gen1a = 0, gen1b = 1
1236         uint8_t cmdParams = arg1;
1237         bool needWipe = cmdParams & 0x01;
1238         bool needFill = cmdParams & 0x02;
1239         bool gen1b = cmdParams & 0x04;
1240
1241         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1242         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1243
1244         uint8_t block0[16] = {0x01, 0x02, 0x03, 0x04, 0x04, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xBE, 0xAF};
1245         uint8_t block1[16] = {0x00};
1246         uint8_t blockK[16] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x08, 0x77, 0x8F, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
1247         uint8_t d_block[18] = {0x00};
1248
1249         // card commands
1250         uint8_t wupC1[]       = { 0x40 };
1251         uint8_t wupC2[]       = { 0x43 };
1252         uint8_t wipeC[]       = { 0x41 };
1253
1254         // iso14443 setup
1255         LED_A_ON();
1256         LED_B_OFF();
1257         LED_C_OFF();
1258         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1259
1260         // tracing
1261         clear_trace();
1262         set_tracing(true);
1263
1264         while (true){
1265                 // wipe
1266                 if (needWipe){
1267                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1268                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1269                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1270                                 break;
1271                         };
1272
1273                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1274                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1275                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1276                                 break;
1277                         };
1278
1279                         if(mifare_classic_halt(NULL, 0)) {
1280                                 if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1281                         };
1282                 };
1283
1284                 // put default data
1285                 if (needFill){
1286                         // select commands
1287                         ReaderTransmitBitsPar(wupC1, 7, 0, NULL);
1288
1289                         // gen1b magic tag : do no issue wupC2 and don't expect CARD_ACK response after SELECT_UID (after getting UID from chip in 'hf mf csetuid' command)
1290                         if (!gen1b) {
1291
1292                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1293                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1294                                         break;
1295                                 };
1296
1297                                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1298                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1299                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1300                                         break;
1301                                 };
1302                         }
1303
1304                         // send blocks command
1305                         for (int blockNo = 0; blockNo < numBlocks; blockNo++) {
1306                                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != CARD_ACK)) {
1307                                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1308                                         break;
1309                                 };
1310
1311                                 // check type of block and add crc
1312                                 if (!isBlockTrailer(blockNo)){
1313                                         memcpy(d_block, block1, 16);
1314                                 } else {
1315                                         memcpy(d_block, blockK, 16);
1316                                 }
1317                                 if (blockNo == 0) {
1318                                         memcpy(d_block, block0, 16);
1319                                 }
1320                                 AppendCrc14443a(d_block, 16);
1321
1322                                 // send write command
1323                                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1324                                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != CARD_ACK)) {
1325                                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1326                                         break;
1327                                 };
1328                         }
1329
1330                         // halt
1331                         // do no issue halt command for gen1b
1332                         if (!gen1b) {
1333                                 if (mifare_classic_halt(NULL, 0)) {
1334                                         if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1335                                                 break;
1336                                 }
1337                         }
1338                 }
1339                 break;
1340         }
1341
1342         // send USB response
1343         LED_B_ON();
1344         cmd_send(CMD_ACK,isOK,0,0,NULL,0);
1345         LED_B_OFF();
1346
1347         // reset fpga
1348         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1349         LEDsoff();
1350
1351         return;
1352 }
1353
1354 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1355
1356   // params
1357         uint8_t needWipe = arg0;
1358         // bit 0 - need get UID
1359         // bit 1 - need wupC
1360         // bit 2 - need HALT after sequence
1361         // bit 3 - need init FPGA and field before sequence
1362         // bit 4 - need reset FPGA and LED
1363         // bit 6 - gen1b backdoor type
1364         uint8_t workFlags = arg1;
1365         uint8_t blockNo = arg2;
1366
1367         // card commands
1368         uint8_t wupC1[]       = { 0x40 };
1369         uint8_t wupC2[]       = { 0x43 };
1370         uint8_t wipeC[]       = { 0x41 };
1371
1372         // variables
1373         byte_t isOK = 0;
1374         uint8_t uid[10] = {0x00};
1375         uint8_t d_block[18] = {0x00};
1376         uint32_t cuid;
1377
1378         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1379         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1380
1381         // reset FPGA and LED
1382         if (workFlags & 0x08) {
1383                 LED_A_ON();
1384                 LED_B_OFF();
1385                 LED_C_OFF();
1386                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1387
1388                 clear_trace();
1389                 set_tracing(true);
1390         }
1391
1392         while (true) {
1393
1394                 // get UID from chip
1395                 if (workFlags & 0x01) {
1396                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
1397                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1398                                 // 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.
1399                                 //break;
1400                                 };
1401
1402                                 if(mifare_classic_halt(NULL, cuid)) {
1403                                         if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1404                                         // Continue, some magic tags misbehavies and send an answer to it.
1405                                         // break;
1406                                 };
1407                 };
1408
1409                 // reset chip
1410                 // Wipe command don't work with gen1b
1411                 if (needWipe && !(workFlags & 0x40)){
1412                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1413                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1414                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1415                                 break;
1416                         };
1417
1418                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1419                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1420                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1421                                 break;
1422                         };
1423
1424                         if(mifare_classic_halt(NULL, 0)) {
1425                                 if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1426                                 // Continue, some magic tags misbehavies and send an answer to it.
1427                                                         // break;
1428                         };
1429                 };
1430
1431                 // write block
1432                 if (workFlags & 0x02) {
1433                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1434
1435                         // gen1b magic tag : do no issue wupC2 and don't expect CARD_ACK response after SELECT_UID (after getting UID from chip in 'hf mf csetuid' command)
1436                         if (!(workFlags & 0x40)) {
1437
1438                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1439                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1440                                         break;
1441                                 };
1442
1443                                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1444                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1445                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1446                                         break;
1447                                 };
1448                         }
1449                 }
1450
1451                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != CARD_ACK)) {
1452                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1453                         break;
1454                 };
1455
1456                 memcpy(d_block, datain, 16);
1457                 AppendCrc14443a(d_block, 16);
1458
1459                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1460                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != CARD_ACK)) {
1461                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1462                         break;
1463                 };
1464
1465                 if (workFlags & 0x04) {
1466                         // do no issue halt command for gen1b magic tag (#db# halt error. response len: 1)
1467                         if (!(workFlags & 0x40)) {
1468                                 if (mifare_classic_halt(NULL, 0)) {
1469                                         if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1470                                         // Continue, some magic tags misbehavies and send an answer to it.
1471                                         // break;
1472                                 }
1473                         }
1474                 }
1475
1476                 isOK = 1;
1477                 break;
1478         }
1479
1480         LED_B_ON();
1481         cmd_send(CMD_ACK,isOK,0,0,uid,4);
1482         LED_B_OFF();
1483
1484         if ((workFlags & 0x10) || (!isOK)) {
1485                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1486                 LEDsoff();
1487         }
1488 }
1489
1490
1491 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1492
1493         // params
1494         // bit 1 - need wupC
1495         // bit 2 - need HALT after sequence
1496         // bit 3 - need init FPGA and field before sequence
1497         // bit 4 - need reset FPGA and LED
1498         // bit 5 - need to set datain instead of issuing USB reply (called via ARM for StandAloneMode14a)
1499         // bit 6 - gen1b backdoor type
1500         uint8_t workFlags = arg0;
1501         uint8_t blockNo = arg2;
1502
1503         // card commands
1504         uint8_t wupC1[]       = { 0x40 };
1505         uint8_t wupC2[]       = { 0x43 };
1506
1507         // variables
1508         byte_t isOK = 0;
1509         uint8_t data[18] = {0x00};
1510         uint32_t cuid = 0;
1511
1512         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1513         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1514
1515         if (workFlags & 0x08) {
1516                 LED_A_ON();
1517                 LED_B_OFF();
1518                 LED_C_OFF();
1519                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1520
1521                 clear_trace();
1522                 set_tracing(true);
1523         }
1524
1525         while (true) {
1526                 if (workFlags & 0x02) {
1527                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1528                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1529                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1530                                 break;
1531                 };
1532                 // do no issue for gen1b magic tag
1533                 if (!(workFlags & 0x40)) {
1534                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1535                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1536                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1537                                 break;
1538                         };
1539                 }
1540         }
1541
1542                 // read block
1543                 if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1544                         if (MF_DBGLEVEL >= 1)   Dbprintf("read block send command error");
1545                         break;
1546                 };
1547                 memcpy(data, receivedAnswer, 18);
1548
1549                 if (workFlags & 0x04) {
1550                         // do no issue halt command for gen1b magic tag (#db# halt error. response len: 1)
1551                         if (!(workFlags & 0x40)) {
1552                                 if (mifare_classic_halt(NULL, cuid)) {
1553                                         if (MF_DBGLEVEL > 1)    Dbprintf("Halt error");
1554                                         // Continue, some magic tags misbehavies and send an answer to it.
1555                                         //      break;
1556                                 }
1557                         }
1558                 }
1559
1560                 isOK = 1;
1561                 break;
1562         }
1563
1564         LED_B_ON();
1565         if (workFlags & 0x20) {
1566                 if (isOK)
1567                         memcpy(datain, data, 18);
1568         }
1569         else
1570                 cmd_send(CMD_ACK,isOK,0,0,data,18);
1571         LED_B_OFF();
1572
1573         if ((workFlags & 0x10) || (!isOK)) {
1574                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1575                 LEDsoff();
1576         }
1577 }
1578
1579 void MifareCIdent(){
1580
1581         // card commands
1582         uint8_t wupC1[]       = { 0x40 };
1583         uint8_t wupC2[]       = { 0x43 };
1584
1585         // variables
1586         byte_t isOK = 0;
1587
1588         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1589         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1590
1591         LED_A_ON();
1592         LED_B_OFF();
1593         LED_C_OFF();
1594         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1595
1596         clear_trace();
1597         set_tracing(true);
1598
1599         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1600         if(ReaderReceive(receivedAnswer, receivedAnswerPar) && (receivedAnswer[0] == CARD_ACK)) {
1601                 isOK = 2;
1602
1603                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1604                 if(ReaderReceive(receivedAnswer, receivedAnswerPar) && (receivedAnswer[0] == CARD_ACK)) {
1605                         isOK = 1;
1606                 };
1607         };
1608
1609         // From iceman1001: removed the if,  since some magic tags misbehavies and send an answer to it.
1610         mifare_classic_halt(NULL, 0);
1611
1612         LED_B_ON();
1613         cmd_send(CMD_ACK,isOK,0,0,0,0);
1614         LED_B_OFF();
1615
1616         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1617         LEDsoff();
1618 }
1619
1620 //
1621 // DESFIRE
1622 //
1623
1624 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1625
1626         byte_t dataout[11] = {0x00};
1627         uint8_t uid[10] = {0x00};
1628         uint32_t cuid;
1629
1630         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1631         clear_trace();
1632
1633         int len = iso14443a_select_card(uid, NULL, &cuid, true, 0, true);
1634         if(!len) {
1635                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1636                 OnError(1);
1637                 return;
1638         };
1639
1640         if(mifare_desfire_des_auth1(cuid, dataout)){
1641                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1642                 OnError(4);
1643                 return;
1644         }
1645
1646         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1647         cmd_send(CMD_ACK,1,cuid,0,dataout, sizeof(dataout));
1648 }
1649
1650 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1651
1652         uint32_t cuid = arg0;
1653         uint8_t key[16] = {0x00};
1654         byte_t isOK = 0;
1655         byte_t dataout[12] = {0x00};
1656
1657         memcpy(key, datain, 16);
1658
1659         isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1660
1661         if( isOK) {
1662                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1663                 OnError(4);
1664                 return;
1665         }
1666
1667         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1668
1669         cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1670         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1671         LEDsoff();
1672 }
1673