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

   1 //-----------------------------------------------------------------------------
   2 // Merlok - June 2011, 2012
   3 // Gerhard de Koning Gans - May 2008
   4 // Hagen Fritsch - June 2010
   5 // Midnitesnake - Dec 2013
   6 // Andy Davies  - Apr 2014
   7 // Iceman - May 2014
   8 //
   9 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
  10 // at your option, any later version. See the LICENSE.txt file for the text of
  11 // the license.
  12 //-----------------------------------------------------------------------------
  13 // Routines to support ISO 14443 type A.
  14 //-----------------------------------------------------------------------------
  15
  16 #include "mifarecmd.h"
  17
  18 #include <stdint.h>
  19
  20 #include "proxmark3.h"
  21 #include "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         uint8_t target_nt_duplicate_count = 0;
 783
 784         uint8_t par_array[4];
 785         uint16_t ncount = 0;
 786         struct Crypto1State mpcs = {0, 0};
 787         struct Crypto1State *pcs;
 788         pcs = &mpcs;
 789         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 790
 791         uint32_t auth1_time, auth2_time;
 792         static uint16_t delta_time;
 793
 794         LED_A_ON();
 795         LED_C_OFF();
 796         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 797
 798         // free eventually allocated BigBuf memory
 799         BigBuf_free();
 800
 801         if (calibrate) clear_trace();
 802         set_tracing(true);
 803
 804         // statistics on nonce distance
 805         int16_t isOK = 0;
 806         #define NESTED_MAX_TRIES 12
 807         uint16_t unsuccessfull_tries = 0;
 808         if (calibrate) {    // for first call only. Otherwise reuse previous calibration
 809                 LED_B_ON();
 810                 WDT_HIT();
 811
 812                 davg = dmax = 0;
 813                 dmin = 2000;
 814                 delta_time = 0;
 815
 816                 for (rtr = 0; rtr < 17; rtr++) {
 817
 818                         // prepare next select. No need to power down the card.
 819                         if(mifare_classic_halt(pcs, cuid)) {
 820                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 821                                 rtr--;
 822                                 continue;
 823                         }
 824
 825                         // Test if the action was cancelled
 826                         if(BUTTON_PRESS()) {
 827                                 isOK = -2;
 828                                 break;
 829                         }
 830
 831                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 832                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 833                                 rtr--;
 834                                 continue;
 835                         };
 836
 837                         auth1_time = 0;
 838                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 839                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 840                                 rtr--;
 841                                 continue;
 842                         };
 843
 844                         if (delta_time) {
 845                                 auth2_time = auth1_time + delta_time;
 846                         } else {
 847                                 auth2_time = 0;
 848                         }
 849                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
 850                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 851                                 rtr--;
 852                                 continue;
 853                         };
 854
 855                         nttmp = prng_successor(nt1, 100);               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 856                         for (i = 101; i < 1200; i++) {
 857                                 nttmp = prng_successor(nttmp, 1);
 858                                 if (nttmp == nt2) break;
 859                         }
 860
 861                         if (i != 1200) {
 862                                 if (rtr != 0) {
 863                                         davg += i;
 864                                         dmin = MIN(dmin, i);
 865                                         dmax = MAX(dmax, i);
 866                                 }
 867                                 else {
 868                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 869                                 }
 870                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 871                         } else {
 872                                 unsuccessfull_tries++;
 873                                 if (unsuccessfull_tries > NESTED_MAX_TRIES) {   // card isn't vulnerable to nested attack (random numbers are not predictable)
 874                                         isOK = -3;
 875                                 }
 876                         }
 877                 }
 878
 879                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 880
 881                 if (MF_DBGLEVEL >= 3) Dbprintf("rtr=%d isOK=%d min=%d max=%d avg=%d, delta_time=%d", rtr, isOK, dmin, dmax, davg, delta_time);
 882
 883                 dmin = davg - 2;
 884                 dmax = davg + 2;
 885
 886                 LED_B_OFF();
 887
 888         }
 889         //  -------------------------------------------------------------------------------------------------
 890
 891         LED_C_ON();
 892
 893         //  get crypted nonces for target sector
 894         for(i=0; i < 2 && !isOK; i++) { // look for exactly two different nonces
 895
 896                 target_nt[i] = 0;
 897                 while(target_nt[i] == 0 && !isOK) { // continue until we have an unambiguous nonce
 898
 899                         // prepare next select. No need to power down the card.
 900                         if(mifare_classic_halt(pcs, cuid)) {
 901                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 902                                 continue;
 903                         }
 904
 905                         // break out of the loop on button press
 906                         if(BUTTON_PRESS()) {
 907                                 isOK = -2;
 908                                 break;
 909                         }
 910
 911                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 912                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 913                                 continue;
 914                         }
 915
 916                         auth1_time = 0;
 917                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 918                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 919                                 continue;
 920                         }
 921
 922                         // nested authentication
 923                         auth2_time = auth1_time + delta_time;
 924                         len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
 925                         if (len != 4) {
 926                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 927                                 continue;
 928                         }
 929
 930                         nt2 = bytes_to_num(receivedAnswer, 4);
 931                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
 932
 933                         // Parity validity check
 934                         for (j = 0; j < 4; j++) {
 935                                 par_array[j] = (oddparity8(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
 936                         }
 937
 938                         ncount = 0;
 939                         nttest = prng_successor(nt1, dmin - 1);
 940                         for (j = dmin; j < dmax + 1; j++) {
 941                                 nttest = prng_successor(nttest, 1);
 942                                 ks1 = nt2 ^ nttest;
 943
 944                                 if (valid_nonce(nttest, nt2, ks1, par_array)){
 945                                         if (ncount > 0) {       // we are only interested in disambiguous nonces, try again
 946                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
 947                                                 target_nt[i] = 0;
 948                                                 break;
 949                                         }
 950                                         target_nt[i] = nttest;
 951                                         target_ks[i] = ks1;
 952                                         ncount++;
 953                                         if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
 954                                                 if( ++target_nt_duplicate_count >= NESTED_MAX_TRIES ) { // unable to get a 2nd nonce after NESTED_MAX_TRIES tries, probably a fixed nonce
 955                                                         if (MF_DBGLEVEL >= 2) Dbprintf("Nonce#2: cannot get nonce that != nonce#1, continuing anyway with single nonce! ntdist=%d", j);
 956                                                         break;
 957                                                 }
 958
 959                                                 target_nt[1] = 0;
 960                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
 961                                                 break;
 962                                         }
 963                                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 964                                 }
 965                         }
 966                         if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 967                 }
 968         }
 969
 970         LED_C_OFF();
 971
 972         //  ----------------------------- crypto1 destroy
 973         crypto1_destroy(pcs);
 974
 975         byte_t buf[4 + 4 * 4];
 976         memcpy(buf, &cuid, 4);
 977         memcpy(buf+4, &target_nt[0], 4);
 978         memcpy(buf+8, &target_ks[0], 4);
 979         memcpy(buf+12, &target_nt[1], 4);
 980         memcpy(buf+16, &target_ks[1], 4);
 981
 982         LED_B_ON();
 983         cmd_send(CMD_ACK, isOK, 0, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 984         LED_B_OFF();
 985
 986         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 987
 988         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 989         LEDsoff();
 990 }
 991
 992 //-----------------------------------------------------------------------------
 993 // MIFARE check keys. key count up to 85.
 994 //
 995 //-----------------------------------------------------------------------------
 996 void MifareChkKeys(uint16_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 997 {
 998         uint8_t blockNo = arg0 & 0xff;
 999         uint8_t keyType = (arg0 >> 8) & 0xff;
1000         bool clearTrace = arg1 & 0x01;
1001         bool multisectorCheck = arg1 & 0x02;
1002         uint8_t set14aTimeout = (arg1 >> 8) & 0xff;
1003         uint8_t keyCount = arg2;
1004
1005         LED_A_ON();
1006
1007         // clear debug level
1008         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
1009         MF_DBGLEVEL = MF_DBG_NONE;
1010
1011         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1012
1013         if (clearTrace) {
1014                 clear_trace();
1015         }
1016         set_tracing(true);
1017
1018         if (set14aTimeout){
1019                 iso14a_set_timeout(set14aTimeout * 10); // timeout: ms = x/106  35-minimum, 50-OK 106-recommended 500-safe
1020         }
1021
1022         if (multisectorCheck) {
1023                 TKeyIndex keyIndex = {{0}};
1024                 uint8_t sectorCnt = blockNo;
1025                 int res = MifareMultisectorChk(datain, keyCount, sectorCnt, keyType, OLD_MF_DBGLEVEL, &keyIndex);
1026
1027                 if (res >= 0) {
1028                         cmd_send(CMD_ACK, 1, res, 0, keyIndex, 80);
1029                 } else {
1030                         cmd_send(CMD_ACK, 0, res, 0, NULL, 0);
1031                 }
1032         } else {
1033                 int res = MifareChkBlockKeys(datain, keyCount, blockNo, keyType, OLD_MF_DBGLEVEL);
1034
1035                 if (res > 0) {
1036                         cmd_send(CMD_ACK, 1, res, 0, datain + (res - 1) * 6, 6);
1037                 } else {
1038                         cmd_send(CMD_ACK, 0, res, 0, NULL, 0);
1039                 }
1040         }
1041
1042         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1043         LED_D_OFF();
1044
1045         // restore debug level
1046         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
1047
1048         LED_A_OFF();
1049 }
1050
1051
1052 //-----------------------------------------------------------------------------
1053 // MIFARE Personalize UID. Only for Mifare Classic EV1 7Byte UID
1054 //-----------------------------------------------------------------------------
1055 void MifarePersonalizeUID(uint8_t keyType, uint8_t perso_option, uint8_t *data) {
1056
1057         uint8_t uid[10];
1058         uint32_t cuid;
1059         struct Crypto1State mpcs = {0, 0};
1060         struct Crypto1State *pcs;
1061         pcs = &mpcs;
1062
1063         LED_A_ON();
1064         clear_trace();
1065
1066         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1067
1068         bool isOK = false;
1069         while (true) {
1070                 if (!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
1071                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1072                         break;
1073                 }
1074
1075                 uint8_t block_number = 0;
1076                 uint64_t key = bytes_to_num(data, 6);
1077                 if (mifare_classic_auth(pcs, cuid, block_number, keyType, key, AUTH_FIRST)) {
1078                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
1079                         break;
1080                 }
1081
1082                 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1083                 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1084                 int len = mifare_sendcmd_short(pcs, true, MIFARE_EV1_PERSONAL_UID, perso_option, receivedAnswer, receivedAnswerPar, NULL);
1085                 if (len != 1 || receivedAnswer[0] != CARD_ACK) {
1086                         if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
1087                         break;;
1088                 }
1089                 isOK = true;
1090                 break;
1091         }
1092
1093         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1094         LED_D_OFF();
1095
1096         crypto1_destroy(pcs);
1097
1098         if (MF_DBGLEVEL >= 2)   DbpString("PERSONALIZE UID FINISHED");
1099
1100         cmd_send(CMD_ACK, isOK, 0, 0, NULL, 0);
1101
1102         LED_A_OFF();
1103 }
1104
1105 //-----------------------------------------------------------------------------
1106 // MIFARE commands set debug level
1107 //
1108 //-----------------------------------------------------------------------------
1109 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1110         MF_DBGLEVEL = arg0;
1111         Dbprintf("Debug level: %d", MF_DBGLEVEL);
1112 }
1113
1114 //-----------------------------------------------------------------------------
1115 // Work with emulator memory
1116 //
1117 // Note: we call FpgaDownloadAndGo(FPGA_BITSTREAM_HF) here although FPGA is not
1118 // involved in dealing with emulator memory. But if it is called later, it might
1119 // destroy the Emulator Memory.
1120 //-----------------------------------------------------------------------------
1121
1122 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1123         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1124         emlClearMem();
1125 }
1126
1127 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1128         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1129         emlSetMem(datain, arg0, arg1); // data, block num, blocks count
1130 }
1131
1132 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1133         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1134         byte_t buf[USB_CMD_DATA_SIZE];
1135         emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
1136
1137         LED_B_ON();
1138         cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
1139         LED_B_OFF();
1140 }
1141
1142 //-----------------------------------------------------------------------------
1143 // Load a card into the emulator memory
1144 //
1145 //-----------------------------------------------------------------------------
1146 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1147         uint8_t numSectors = arg0;
1148         uint8_t keyType = arg1;
1149         uint64_t ui64Key = 0;
1150         uint32_t cuid;
1151         struct Crypto1State mpcs = {0, 0};
1152         struct Crypto1State *pcs;
1153         pcs = &mpcs;
1154
1155         // variables
1156         byte_t dataoutbuf[16];
1157         byte_t dataoutbuf2[16];
1158         uint8_t uid[10];
1159
1160         LED_A_ON();
1161         LED_B_OFF();
1162         LED_C_OFF();
1163         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1164
1165         clear_trace();
1166         set_tracing(false);
1167
1168         bool isOK = true;
1169
1170         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
1171                 isOK = false;
1172                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1173         }
1174
1175         for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
1176                 ui64Key = emlGetKey(sectorNo, keyType);
1177                 if (sectorNo == 0){
1178                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
1179                                 isOK = false;
1180                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth error", sectorNo);
1181                                 break;
1182                         }
1183                 } else {
1184                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
1185                                 isOK = false;
1186                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
1187                                 break;
1188                         }
1189                 }
1190
1191                 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
1192                         if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
1193                                 isOK = false;
1194                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
1195                                 break;
1196                         };
1197                         if (isOK) {
1198                                 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
1199                                         emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
1200                                 } else {    // sector trailer, keep the keys, set only the AC
1201                                         emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
1202                                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
1203                                         emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
1204                                 }
1205                         }
1206                 }
1207
1208         }
1209
1210         if(mifare_classic_halt(pcs, cuid)) {
1211                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1212         };
1213
1214         //  ----------------------------- crypto1 destroy
1215         crypto1_destroy(pcs);
1216
1217         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1218         LEDsoff();
1219
1220         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
1221
1222 }
1223
1224
1225 //-----------------------------------------------------------------------------
1226 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
1227 //
1228 //-----------------------------------------------------------------------------
1229
1230 static bool isBlockTrailer(int blockN) {
1231         if (blockN >= 0 && blockN < 128) {
1232                 return ((blockN & 0x03) == 0x03);
1233         }
1234         if (blockN >= 128 && blockN <= 256) {
1235                 return ((blockN & 0x0F) == 0x0F);
1236         }
1237         return false;
1238 }
1239
1240 void MifareCWipe(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1241         // var
1242         byte_t isOK = 0;
1243         uint32_t numBlocks = arg0;
1244         // cmdParams:
1245         // bit 0 - wipe gen1a
1246         // bit 1 - fill card with default data
1247         // bit 2 - gen1a = 0, gen1b = 1
1248         uint8_t cmdParams = arg1;
1249         bool needWipe = cmdParams & 0x01;
1250         bool needFill = cmdParams & 0x02;
1251         bool gen1b = cmdParams & 0x04;
1252
1253         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1254         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1255
1256         uint8_t block0[16] = {0x01, 0x02, 0x03, 0x04, 0x04, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xBE, 0xAF};
1257         uint8_t block1[16] = {0x00};
1258         uint8_t blockK[16] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x08, 0x77, 0x8F, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
1259         uint8_t d_block[18] = {0x00};
1260
1261         // card commands
1262         uint8_t wupC1[]       = { 0x40 };
1263         uint8_t wupC2[]       = { 0x43 };
1264         uint8_t wipeC[]       = { 0x41 };
1265
1266         // iso14443 setup
1267         LED_A_ON();
1268         LED_B_OFF();
1269         LED_C_OFF();
1270         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1271
1272         // tracing
1273         clear_trace();
1274         set_tracing(true);
1275
1276         while (true){
1277                 // wipe
1278                 if (needWipe){
1279                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1280                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1281                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1282                                 break;
1283                         };
1284
1285                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1286                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1287                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1288                                 break;
1289                         };
1290
1291                         if(mifare_classic_halt(NULL, 0)) {
1292                                 if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1293                         };
1294                 };
1295
1296                 // put default data
1297                 if (needFill){
1298                         // select commands
1299                         ReaderTransmitBitsPar(wupC1, 7, 0, NULL);
1300
1301                         // 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)
1302                         if (!gen1b) {
1303
1304                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1305                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1306                                         break;
1307                                 };
1308
1309                                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1310                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1311                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1312                                         break;
1313                                 };
1314                         }
1315
1316                         // send blocks command
1317                         for (int blockNo = 0; blockNo < numBlocks; blockNo++) {
1318                                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != CARD_ACK)) {
1319                                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1320                                         break;
1321                                 };
1322
1323                                 // check type of block and add crc
1324                                 if (!isBlockTrailer(blockNo)){
1325                                         memcpy(d_block, block1, 16);
1326                                 } else {
1327                                         memcpy(d_block, blockK, 16);
1328                                 }
1329                                 if (blockNo == 0) {
1330                                         memcpy(d_block, block0, 16);
1331                                 }
1332                                 AppendCrc14443a(d_block, 16);
1333
1334                                 // send write command
1335                                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1336                                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != CARD_ACK)) {
1337                                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1338                                         break;
1339                                 };
1340                         }
1341
1342                         // halt
1343                         // do no issue halt command for gen1b
1344                         if (!gen1b) {
1345                                 if (mifare_classic_halt(NULL, 0)) {
1346                                         if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1347                                                 break;
1348                                 }
1349                         }
1350                 }
1351                 break;
1352         }
1353
1354         // send USB response
1355         LED_B_ON();
1356         cmd_send(CMD_ACK,isOK,0,0,NULL,0);
1357         LED_B_OFF();
1358
1359         // reset fpga
1360         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1361         LEDsoff();
1362
1363         return;
1364 }
1365
1366 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1367
1368   // params
1369         uint8_t needWipe = arg0;
1370         // bit 0 - need get UID
1371         // bit 1 - need wupC
1372         // bit 2 - need HALT after sequence
1373         // bit 3 - need init FPGA and field before sequence
1374         // bit 4 - need reset FPGA and LED
1375         // bit 6 - gen1b backdoor type
1376         uint8_t workFlags = arg1;
1377         uint8_t blockNo = arg2;
1378
1379         // card commands
1380         uint8_t wupC1[]       = { 0x40 };
1381         uint8_t wupC2[]       = { 0x43 };
1382         uint8_t wipeC[]       = { 0x41 };
1383
1384         // variables
1385         byte_t isOK = 0;
1386         uint8_t uid[10] = {0x00};
1387         uint8_t d_block[18] = {0x00};
1388         uint32_t cuid;
1389
1390         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1391         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1392
1393         // reset FPGA and LED
1394         if (workFlags & 0x08) {
1395                 LED_A_ON();
1396                 LED_B_OFF();
1397                 LED_C_OFF();
1398                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1399
1400                 clear_trace();
1401                 set_tracing(true);
1402         }
1403
1404         while (true) {
1405
1406                 // get UID from chip
1407                 if (workFlags & 0x01) {
1408                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
1409                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1410                                 // 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.
1411                                 //break;
1412                                 };
1413
1414                                 if(mifare_classic_halt(NULL, cuid)) {
1415                                         if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1416                                         // Continue, some magic tags misbehavies and send an answer to it.
1417                                         // break;
1418                                 };
1419                 };
1420
1421                 // reset chip
1422                 // Wipe command don't work with gen1b
1423                 if (needWipe && !(workFlags & 0x40)){
1424                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1425                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1426                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1427                                 break;
1428                         };
1429
1430                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1431                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1432                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1433                                 break;
1434                         };
1435
1436                         if(mifare_classic_halt(NULL, 0)) {
1437                                 if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1438                                 // Continue, some magic tags misbehavies and send an answer to it.
1439                                                         // break;
1440                         };
1441                 };
1442
1443                 // write block
1444                 if (workFlags & 0x02) {
1445                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1446
1447                         // 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)
1448                         if (!(workFlags & 0x40)) {
1449
1450                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1451                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1452                                         break;
1453                                 };
1454
1455                                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1456                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1457                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1458                                         break;
1459                                 };
1460                         }
1461                 }
1462
1463                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != CARD_ACK)) {
1464                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1465                         break;
1466                 };
1467
1468                 memcpy(d_block, datain, 16);
1469                 AppendCrc14443a(d_block, 16);
1470
1471                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1472                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != CARD_ACK)) {
1473                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1474                         break;
1475                 };
1476
1477                 if (workFlags & 0x04) {
1478                         // do no issue halt command for gen1b magic tag (#db# halt error. response len: 1)
1479                         if (!(workFlags & 0x40)) {
1480                                 if (mifare_classic_halt(NULL, 0)) {
1481                                         if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1482                                         // Continue, some magic tags misbehavies and send an answer to it.
1483                                         // break;
1484                                 }
1485                         }
1486                 }
1487
1488                 isOK = 1;
1489                 break;
1490         }
1491
1492         LED_B_ON();
1493         cmd_send(CMD_ACK,isOK,0,0,uid,4);
1494         LED_B_OFF();
1495
1496         if ((workFlags & 0x10) || (!isOK)) {
1497                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1498                 LEDsoff();
1499         }
1500 }
1501
1502
1503 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1504
1505         // params
1506         // bit 1 - need wupC
1507         // bit 2 - need HALT after sequence
1508         // bit 3 - need init FPGA and field before sequence
1509         // bit 4 - need reset FPGA and LED
1510         // bit 5 - need to set datain instead of issuing USB reply (called via ARM for StandAloneMode14a)
1511         // bit 6 - gen1b backdoor type
1512         uint8_t workFlags = arg0;
1513         uint8_t blockNo = arg2;
1514
1515         // card commands
1516         uint8_t wupC1[]       = { 0x40 };
1517         uint8_t wupC2[]       = { 0x43 };
1518
1519         // variables
1520         byte_t isOK = 0;
1521         uint8_t data[18] = {0x00};
1522         uint32_t cuid = 0;
1523
1524         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1525         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1526
1527         if (workFlags & 0x08) {
1528                 LED_A_ON();
1529                 LED_B_OFF();
1530                 LED_C_OFF();
1531                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1532
1533                 clear_trace();
1534                 set_tracing(true);
1535         }
1536
1537         while (true) {
1538                 if (workFlags & 0x02) {
1539                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1540                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1541                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1542                                 break;
1543                 };
1544                 // do no issue for gen1b magic tag
1545                 if (!(workFlags & 0x40)) {
1546                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1547                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != CARD_ACK)) {
1548                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1549                                 break;
1550                         };
1551                 }
1552         }
1553
1554                 // read block
1555                 if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1556                         if (MF_DBGLEVEL >= 1)   Dbprintf("read block send command error");
1557                         break;
1558                 };
1559                 memcpy(data, receivedAnswer, 18);
1560
1561                 if (workFlags & 0x04) {
1562                         // do no issue halt command for gen1b magic tag (#db# halt error. response len: 1)
1563                         if (!(workFlags & 0x40)) {
1564                                 if (mifare_classic_halt(NULL, cuid)) {
1565                                         if (MF_DBGLEVEL > 1)    Dbprintf("Halt error");
1566                                         // Continue, some magic tags misbehavies and send an answer to it.
1567                                         //      break;
1568                                 }
1569                         }
1570                 }
1571
1572                 isOK = 1;
1573                 break;
1574         }
1575
1576         LED_B_ON();
1577         if (workFlags & 0x20) {
1578                 if (isOK)
1579                         memcpy(datain, data, 18);
1580         }
1581         else
1582                 cmd_send(CMD_ACK,isOK,0,0,data,18);
1583         LED_B_OFF();
1584
1585         if ((workFlags & 0x10) || (!isOK)) {
1586                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1587                 LEDsoff();
1588         }
1589 }
1590
1591 void MifareCIdent(){
1592
1593         // card commands
1594         uint8_t wupC1[]       = { 0x40 };
1595         uint8_t wupC2[]       = { 0x43 };
1596
1597         // variables
1598         byte_t isOK = 0;
1599
1600         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1601         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1602
1603         LED_A_ON();
1604         LED_B_OFF();
1605         LED_C_OFF();
1606         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1607
1608         clear_trace();
1609         set_tracing(true);
1610
1611         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1612         if(ReaderReceive(receivedAnswer, receivedAnswerPar) && (receivedAnswer[0] == CARD_ACK)) {
1613                 isOK = 2;
1614
1615                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1616                 if(ReaderReceive(receivedAnswer, receivedAnswerPar) && (receivedAnswer[0] == CARD_ACK)) {
1617                         isOK = 1;
1618                 };
1619         };
1620
1621         // From iceman1001: removed the if,  since some magic tags misbehavies and send an answer to it.
1622         mifare_classic_halt(NULL, 0);
1623
1624         LED_B_ON();
1625         cmd_send(CMD_ACK,isOK,0,0,0,0);
1626         LED_B_OFF();
1627
1628         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1629         LEDsoff();
1630 }
1631
1632 //
1633 // DESFIRE
1634 //
1635
1636 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1637
1638         byte_t dataout[11] = {0x00};
1639         uint8_t uid[10] = {0x00};
1640         uint32_t cuid;
1641
1642         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1643         clear_trace();
1644
1645         int len = iso14443a_select_card(uid, NULL, &cuid, true, 0, true);
1646         if(!len) {
1647                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1648                 OnError(1);
1649                 return;
1650         };
1651
1652         if(mifare_desfire_des_auth1(cuid, dataout)){
1653                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1654                 OnError(4);
1655                 return;
1656         }
1657
1658         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1659         cmd_send(CMD_ACK,1,cuid,0,dataout, sizeof(dataout));
1660 }
1661
1662 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1663
1664         uint32_t cuid = arg0;
1665         uint8_t key[16] = {0x00};
1666         byte_t isOK = 0;
1667         byte_t dataout[12] = {0x00};
1668
1669         memcpy(key, datain, 16);
1670
1671         isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1672
1673         if( isOK) {
1674                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1675                 OnError(4);
1676                 return;
1677         }
1678
1679         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1680
1681         cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1682         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1683         LEDsoff();
1684 }
1685