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