cvs.zerfleddert.de Git - proxmark3-svn/blob - client/mifarehost.c

   1 // Merlok, 2011, 2012
   2 // people from mifare@nethemba.com, 2010
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // mifare commands
   9 //-----------------------------------------------------------------------------
  10
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #include <pthread.h>
  15 #include "mifarehost.h"
  16 #include "proxmark3.h"
  17
  18 // MIFARE
  19 int compar_int(const void * a, const void * b) {
  20         // didn't work: (the result is truncated to 32 bits)
  21         //return (*(uint64_t*)b - *(uint64_t*)a);
  22
  23         // better:
  24         if (*(uint64_t*)b == *(uint64_t*)a) return 0;
  25         else if (*(uint64_t*)b > *(uint64_t*)a) return 1;
  26         else return -1;
  27 }
  28
  29 // Compare 16 Bits out of cryptostate
  30 int Compare16Bits(const void * a, const void * b) {
  31         if ((*(uint64_t*)b & 0x00ff000000ff0000) == (*(uint64_t*)a & 0x00ff000000ff0000)) return 0;
  32         else if ((*(uint64_t*)b & 0x00ff000000ff0000) > (*(uint64_t*)a & 0x00ff000000ff0000)) return 1;
  33         else return -1;
  34 }
  35
  36 typedef
  37         struct {
  38                 union {
  39                         struct Crypto1State *slhead;
  40                         uint64_t *keyhead;
  41                 } head;
  42                 union {
  43                         struct Crypto1State *sltail;
  44                         uint64_t *keytail;
  45                 } tail;
  46                 uint32_t len;
  47                 uint32_t uid;
  48                 uint32_t blockNo;
  49                 uint32_t keyType;
  50                 uint32_t nt;
  51                 uint32_t ks1;
  52         } StateList_t;
  53
  54
  55 // wrapper function for multi-threaded lfsr_recovery32
  56 void* nested_worker_thread(void *arg)
  57 {
  58         struct Crypto1State *p1;
  59         StateList_t *statelist = arg;
  60
  61         statelist->head.slhead = lfsr_recovery32(statelist->ks1, statelist->nt ^ statelist->uid);
  62         for (p1 = statelist->head.slhead; *(uint64_t *)p1 != 0; p1++);
  63         statelist->len = p1 - statelist->head.slhead;
  64         statelist->tail.sltail = --p1;
  65         qsort(statelist->head.slhead, statelist->len, sizeof(uint64_t), Compare16Bits);
  66
  67         return statelist->head.slhead;
  68 }
  69
  70 int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo, uint8_t trgKeyType, uint8_t * resultKey, bool calibrate)
  71 {
  72         uint16_t i, len;
  73         uint32_t uid;
  74         UsbCommand resp;
  75         StateList_t statelists[2];
  76         struct Crypto1State *p1, *p2, *p3, *p4;
  77
  78         // flush queue
  79         WaitForResponseTimeout(CMD_ACK,NULL,100);
  80
  81         UsbCommand c = {CMD_MIFARE_NESTED, {blockNo + keyType * 0x100, trgBlockNo + trgKeyType * 0x100, calibrate}};
  82         memcpy(c.d.asBytes, key, 6);
  83         SendCommand(&c);
  84
  85         if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
  86                 len = resp.arg[1];
  87                 if (len == 2) {
  88                         memcpy(&uid, resp.d.asBytes, 4);
  89                         PrintAndLog("uid:%08x len=%d trgbl=%d trgkey=%x", uid, len, (uint16_t)resp.arg[2] & 0xff, (uint16_t)resp.arg[2] >> 8);
  90
  91                         for (i = 0; i < 2; i++) {
  92                                 statelists[i].blockNo = resp.arg[2] & 0xff;
  93                                 statelists[i].keyType = (resp.arg[2] >> 8) & 0xff;
  94                                 statelists[i].uid = uid;
  95
  96                                 memcpy(&statelists[i].nt,  (void *)(resp.d.asBytes + 4 + i * 8 + 0), 4);
  97                                 memcpy(&statelists[i].ks1, (void *)(resp.d.asBytes + 4 + i * 8 + 4), 4);
  98                         }
  99                 }
 100                 else {
 101                         PrintAndLog("Got 0 keys from proxmark.");
 102                         return 1;
 103                 }
 104         }
 105
 106         // calc keys
 107
 108         pthread_t thread_id[2];
 109
 110         // create and run worker threads
 111         for (i = 0; i < 2; i++) {
 112                 pthread_create(thread_id + i, NULL, nested_worker_thread, &statelists[i]);
 113         }
 114
 115         // wait for threads to terminate:
 116         for (i = 0; i < 2; i++) {
 117                 pthread_join(thread_id[i], (void*)&statelists[i].head.slhead);
 118         }
 119
 120
 121         // the first 16 Bits of the cryptostate already contain part of our key.
 122         // Create the intersection of the two lists based on these 16 Bits and
 123         // roll back the cryptostate
 124         p1 = p3 = statelists[0].head.slhead;
 125         p2 = p4 = statelists[1].head.slhead;
 126         while (p1 <= statelists[0].tail.sltail && p2 <= statelists[1].tail.sltail) {
 127                 if (Compare16Bits(p1, p2) == 0) {
 128                         struct Crypto1State savestate, *savep = &savestate;
 129                         savestate = *p1;
 130                         while(Compare16Bits(p1, savep) == 0 && p1 <= statelists[0].tail.sltail) {
 131                                 *p3 = *p1;
 132                                 lfsr_rollback_word(p3, statelists[0].nt ^ statelists[0].uid, 0);
 133                                 p3++;
 134                                 p1++;
 135                         }
 136                         savestate = *p2;
 137                         while(Compare16Bits(p2, savep) == 0 && p2 <= statelists[1].tail.sltail) {
 138                                 *p4 = *p2;
 139                                 lfsr_rollback_word(p4, statelists[1].nt ^ statelists[1].uid, 0);
 140                                 p4++;
 141                                 p2++;
 142                         }
 143                 }
 144                 else {
 145                         while (Compare16Bits(p1, p2) == -1) p1++;
 146                         while (Compare16Bits(p1, p2) == 1) p2++;
 147                 }
 148         }
 149         p3->even = 0; p3->odd = 0;
 150         p4->even = 0; p4->odd = 0;
 151         statelists[0].len = p3 - statelists[0].head.slhead;
 152         statelists[1].len = p4 - statelists[1].head.slhead;
 153         statelists[0].tail.sltail=--p3;
 154         statelists[1].tail.sltail=--p4;
 155
 156         // the statelists now contain possible keys. The key we are searching for must be in the
 157         // intersection of both lists. Create the intersection:
 158         qsort(statelists[0].head.keyhead, statelists[0].len, sizeof(uint64_t), compar_int);
 159         qsort(statelists[1].head.keyhead, statelists[1].len, sizeof(uint64_t), compar_int);
 160
 161         uint64_t *p5, *p6, *p7;
 162         p5 = p7 = statelists[0].head.keyhead;
 163         p6 = statelists[1].head.keyhead;
 164         while (p5 <= statelists[0].tail.keytail && p6 <= statelists[1].tail.keytail) {
 165                 if (compar_int(p5, p6) == 0) {
 166                         *p7++ = *p5++;
 167                         p6++;
 168                 }
 169                 else {
 170                         while (compar_int(p5, p6) == -1) p5++;
 171                         while (compar_int(p5, p6) == 1) p6++;
 172                 }
 173         }
 174         statelists[0].len = p7 - statelists[0].head.keyhead;
 175         statelists[0].tail.keytail=--p7;
 176
 177         memset(resultKey, 0, 6);
 178         // The list may still contain several key candidates. Test each of them with mfCheckKeys
 179         for (i = 0; i < statelists[0].len; i++) {
 180                 uint8_t keyBlock[6];
 181                 uint64_t key64;
 182                 crypto1_get_lfsr(statelists[0].head.slhead + i, &key64);
 183                 num_to_bytes(key64, 6, keyBlock);
 184                 key64 = 0;
 185                 if (!mfCheckKeys(statelists[0].blockNo, statelists[0].keyType, 1, keyBlock, &key64)) {
 186                         num_to_bytes(key64, 6, resultKey);
 187                         break;
 188                 }
 189         }
 190
 191         free(statelists[0].head.slhead);
 192         free(statelists[1].head.slhead);
 193
 194         return 0;
 195 }
 196
 197 int mfCheckKeys (uint8_t blockNo, uint8_t keyType, uint8_t keycnt, uint8_t * keyBlock, uint64_t * key){
 198
 199         *key = 0;
 200
 201         UsbCommand c = {CMD_MIFARE_CHKKEYS, {blockNo, keyType, keycnt}};
 202         memcpy(c.d.asBytes, keyBlock, 6 * keycnt);
 203         SendCommand(&c);
 204
 205         UsbCommand resp;
 206         if (!WaitForResponseTimeout(CMD_ACK,&resp,3000)) return 1;
 207         if ((resp.arg[0] & 0xff) != 0x01) return 2;
 208         *key = bytes_to_num(resp.d.asBytes, 6);
 209         return 0;
 210 }
 211
 212 // EMULATOR
 213
 214 int mfEmlGetMem(uint8_t *data, int blockNum, int blocksCount) {
 215         UsbCommand c = {CMD_MIFARE_EML_MEMGET, {blockNum, blocksCount, 0}};
 216         SendCommand(&c);
 217
 218         UsbCommand resp;
 219         if (!WaitForResponseTimeout(CMD_ACK,&resp,1500)) return 1;
 220         memcpy(data, resp.d.asBytes, blocksCount * 16);
 221         return 0;
 222 }
 223
 224 int mfEmlSetMem(uint8_t *data, int blockNum, int blocksCount) {
 225         UsbCommand c = {CMD_MIFARE_EML_MEMSET, {blockNum, blocksCount, 0}};
 226         memcpy(c.d.asBytes, data, blocksCount * 16);
 227         SendCommand(&c);
 228         return 0;
 229 }
 230
 231 // "MAGIC" CARD
 232
 233 int mfCSetUID(uint8_t *uid, uint8_t *oldUID, bool wantWipe) {
 234
 235         uint8_t oldblock0[16] = {0x00};
 236         uint8_t block0[16] = {0x00};
 237         memcpy(block0, uid, 4);
 238         block0[4] = block0[0]^block0[1]^block0[2]^block0[3]; // Mifare UID BCC
 239         // mifare classic SAK(byte 5) and ATQA(byte 6 and 7)
 240         //block0[5] = 0x08;
 241         //block0[6] = 0x04;
 242         //block0[7] = 0x00;
 243
 244         block0[5] = 0x01;  //sak
 245         block0[6] = 0x01;
 246         block0[7] = 0x0f;
 247
 248         int old = mfCGetBlock(0, oldblock0, CSETBLOCK_SINGLE_OPER);
 249         if ( old == 0) {
 250                 memcpy(block0+8, oldblock0+8, 8);
 251                 PrintAndLog("block 0:  %s", sprint_hex(block0,16));
 252         } else {
 253                 PrintAndLog("Couldn't get olddata. Will write over the last bytes of Block 0.");
 254         }
 255         return mfCSetBlock(0, block0, oldUID, wantWipe, CSETBLOCK_SINGLE_OPER);
 256 }
 257
 258 int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, bool wantWipe, uint8_t params) {
 259
 260         uint8_t isOK = 0;
 261         UsbCommand c = {CMD_MIFARE_CSETBLOCK, {wantWipe, params & (0xFE | (uid == NULL ? 0:1)), blockNo}};
 262         memcpy(c.d.asBytes, data, 16);
 263         SendCommand(&c);
 264
 265         UsbCommand resp;
 266         if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
 267                 isOK  = resp.arg[0] & 0xff;
 268                 if (uid != NULL)
 269                         memcpy(uid, resp.d.asBytes, 4);
 270                 if (!isOK)
 271                         return 2;
 272         } else {
 273                 PrintAndLog("Command execute timeout");
 274                 return 1;
 275         }
 276         return 0;
 277 }
 278
 279 int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params) {
 280         uint8_t isOK = 0;
 281
 282         UsbCommand c = {CMD_MIFARE_CGETBLOCK, {params, 0, blockNo}};
 283         SendCommand(&c);
 284
 285   UsbCommand resp;
 286         if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
 287                 isOK  = resp.arg[0] & 0xff;
 288                 memcpy(data, resp.d.asBytes, 16);
 289                 if (!isOK) return 2;
 290         } else {
 291                 PrintAndLog("Command execute timeout");
 292                 return 1;
 293         }
 294         return 0;
 295 }
 296
 297 // SNIFFER
 298
 299 // constants
 300 static uint8_t trailerAccessBytes[4] = {0x08, 0x77, 0x8F, 0x00};
 301
 302 // variables
 303 char logHexFileName[FILE_PATH_SIZE] = {0x00};
 304 static uint8_t traceCard[4096] = {0x00};
 305 static char traceFileName[FILE_PATH_SIZE] = {0x00};
 306 static int traceState = TRACE_IDLE;
 307 static uint8_t traceCurBlock = 0;
 308 static uint8_t traceCurKey = 0;
 309
 310 struct Crypto1State *traceCrypto1 = NULL;
 311
 312 struct Crypto1State *revstate;
 313 uint64_t lfsr;
 314 uint32_t ks2;
 315 uint32_t ks3;
 316
 317 uint32_t uid;     // serial number
 318 uint32_t nt;      // tag challenge
 319 uint32_t nr_enc;  // encrypted reader challenge
 320 uint32_t ar_enc;  // encrypted reader response
 321 uint32_t at_enc;  // encrypted tag response
 322
 323 int isTraceCardEmpty(void) {
 324         return ((traceCard[0] == 0) && (traceCard[1] == 0) && (traceCard[2] == 0) && (traceCard[3] == 0));
 325 }
 326
 327 int isBlockEmpty(int blockN) {
 328         for (int i = 0; i < 16; i++)
 329                 if (traceCard[blockN * 16 + i] != 0) return 0;
 330
 331         return 1;
 332 }
 333
 334 int isBlockTrailer(int blockN) {
 335  return ((blockN & 0x03) == 0x03);
 336 }
 337
 338 int loadTraceCard(uint8_t *tuid) {
 339         FILE * f;
 340         char buf[64] = {0x00};
 341         uint8_t buf8[64] = {0x00};
 342         int i, blockNum;
 343
 344         if (!isTraceCardEmpty())
 345                 saveTraceCard();
 346
 347         memset(traceCard, 0x00, 4096);
 348         memcpy(traceCard, tuid + 3, 4);
 349
 350         FillFileNameByUID(traceFileName, tuid, ".eml", 7);
 351
 352         f = fopen(traceFileName, "r");
 353         if (!f) {
 354                 fclose(f);
 355                 return 1;
 356         }
 357
 358         blockNum = 0;
 359
 360         while(!feof(f)){
 361
 362                 memset(buf, 0, sizeof(buf));
 363                 if (fgets(buf, sizeof(buf), f) == NULL) {
 364       PrintAndLog("File reading error.");
 365                         fclose(f);
 366                         return 2;
 367     }
 368
 369                 if (strlen(buf) < 32){
 370                         if (feof(f)) break;
 371                         PrintAndLog("File content error. Block data must include 32 HEX symbols");
 372                         fclose(f);
 373                         return 2;
 374                 }
 375                 for (i = 0; i < 32; i += 2)
 376                         sscanf(&buf[i], "%02x", (unsigned int *)&buf8[i / 2]);
 377
 378                 memcpy(traceCard + blockNum * 16, buf8, 16);
 379
 380                 blockNum++;
 381         }
 382         fclose(f);
 383
 384         return 0;
 385 }
 386
 387 int saveTraceCard(void) {
 388         FILE * f;
 389
 390         if ((!strlen(traceFileName)) || (isTraceCardEmpty())) return 0;
 391
 392         f = fopen(traceFileName, "w+");
 393         if ( !f ) {
 394                 fclose(f);
 395                 return 1;
 396         }
 397
 398         for (int i = 0; i < 64; i++) {  // blocks
 399                 for (int j = 0; j < 16; j++)  // bytes
 400                         fprintf(f, "%02x", *(traceCard + i * 16 + j));
 401                 fprintf(f,"\n");
 402         }
 403         fclose(f);
 404         return 0;
 405 }
 406
 407 int mfTraceInit(uint8_t *tuid, uint8_t *atqa, uint8_t sak, bool wantSaveToEmlFile) {
 408
 409         if (traceCrypto1)
 410                 crypto1_destroy(traceCrypto1);
 411
 412         traceCrypto1 = NULL;
 413
 414         if (wantSaveToEmlFile)
 415                 loadTraceCard(tuid);
 416
 417         traceCard[4] = traceCard[0] ^ traceCard[1] ^ traceCard[2] ^ traceCard[3];
 418         traceCard[5] = sak;
 419         memcpy(&traceCard[6], atqa, 2);
 420         traceCurBlock = 0;
 421         uid = bytes_to_num(tuid + 3, 4);
 422
 423         traceState = TRACE_IDLE;
 424
 425         return 0;
 426 }
 427
 428 void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len, bool isEncrypted){
 429         uint8_t bt = 0;
 430         int i;
 431
 432         if (len != 1) {
 433                 for (i = 0; i < len; i++)
 434                         data[i] = crypto1_byte(pcs, 0x00, isEncrypted) ^ data[i];
 435         } else {
 436                 bt = 0;
 437                 for (i = 0; i < 4; i++)
 438                         bt |= (crypto1_bit(pcs, 0, isEncrypted) ^ BIT(data[0], i)) << i;
 439
 440                 data[0] = bt;
 441         }
 442         return;
 443 }
 444
 445
 446 int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) {
 447         uint8_t data[64];
 448
 449         if (traceState == TRACE_ERROR) return 1;
 450         if (len > 64) {
 451                 traceState = TRACE_ERROR;
 452                 return 1;
 453         }
 454
 455         memcpy(data, data_src, len);
 456         if ((traceCrypto1) && ((traceState == TRACE_IDLE) || (traceState > TRACE_AUTH_OK))) {
 457                 mf_crypto1_decrypt(traceCrypto1, data, len, 0);
 458                 PrintAndLog("dec> %s", sprint_hex(data, len));
 459                 AddLogHex(logHexFileName, "dec> ", data, len);
 460         }
 461
 462         switch (traceState) {
 463         case TRACE_IDLE:
 464                 // check packet crc16!
 465                 if ((len >= 4) && (!CheckCrc14443(CRC_14443_A, data, len))) {
 466                         PrintAndLog("dec> CRC ERROR!!!");
 467                         AddLogLine(logHexFileName, "dec> ", "CRC ERROR!!!");
 468                         traceState = TRACE_ERROR;  // do not decrypt the next commands
 469                         return 1;
 470                 }
 471
 472                 // AUTHENTICATION
 473                 if ((len == 4) && ((data[0] == 0x60) || (data[0] == 0x61))) {
 474                         traceState = TRACE_AUTH1;
 475                         traceCurBlock = data[1];
 476                         traceCurKey = data[0] == 60 ? 1:0;
 477                         return 0;
 478                 }
 479
 480                 // READ
 481                 if ((len ==4) && ((data[0] == 0x30))) {
 482                         traceState = TRACE_READ_DATA;
 483                         traceCurBlock = data[1];
 484                         return 0;
 485                 }
 486
 487                 // WRITE
 488                 if ((len ==4) && ((data[0] == 0xA0))) {
 489                         traceState = TRACE_WRITE_OK;
 490                         traceCurBlock = data[1];
 491                         return 0;
 492                 }
 493
 494                 // HALT
 495                 if ((len ==4) && ((data[0] == 0x50) && (data[1] == 0x00))) {
 496                         traceState = TRACE_ERROR;  // do not decrypt the next commands
 497                         return 0;
 498                 }
 499
 500                 return 0;
 501         break;
 502
 503         case TRACE_READ_DATA:
 504                 if (len == 18) {
 505                         traceState = TRACE_IDLE;
 506
 507                         if (isBlockTrailer(traceCurBlock)) {
 508                                 memcpy(traceCard + traceCurBlock * 16 + 6, data + 6, 4);
 509                         } else {
 510                                 memcpy(traceCard + traceCurBlock * 16, data, 16);
 511                         }
 512                         if (wantSaveToEmlFile) saveTraceCard();
 513                         return 0;
 514                 } else {
 515                         traceState = TRACE_ERROR;
 516                         return 1;
 517                 }
 518         break;
 519
 520         case TRACE_WRITE_OK:
 521                 if ((len == 1) && (data[0] == 0x0a)) {
 522                         traceState = TRACE_WRITE_DATA;
 523
 524                         return 0;
 525                 } else {
 526                         traceState = TRACE_ERROR;
 527                         return 1;
 528                 }
 529         break;
 530
 531         case TRACE_WRITE_DATA:
 532                 if (len == 18) {
 533                         traceState = TRACE_IDLE;
 534
 535                         memcpy(traceCard + traceCurBlock * 16, data, 16);
 536                         if (wantSaveToEmlFile) saveTraceCard();
 537                         return 0;
 538                 } else {
 539                         traceState = TRACE_ERROR;
 540                         return 1;
 541                 }
 542         break;
 543
 544         case TRACE_AUTH1:
 545                 if (len == 4) {
 546                         traceState = TRACE_AUTH2;
 547                         nt = bytes_to_num(data, 4);
 548                         return 0;
 549                 } else {
 550                         traceState = TRACE_ERROR;
 551                         return 1;
 552                 }
 553         break;
 554
 555         case TRACE_AUTH2:
 556                 if (len == 8) {
 557                         traceState = TRACE_AUTH_OK;
 558
 559                         nr_enc = bytes_to_num(data, 4);
 560                         ar_enc = bytes_to_num(data + 4, 4);
 561                         return 0;
 562                 } else {
 563                         traceState = TRACE_ERROR;
 564                         return 1;
 565                 }
 566         break;
 567
 568         case TRACE_AUTH_OK:
 569                 if (len ==4) {
 570                         traceState = TRACE_IDLE;
 571
 572                         at_enc = bytes_to_num(data, 4);
 573
 574                         //  decode key here)
 575                         ks2 = ar_enc ^ prng_successor(nt, 64);
 576                         ks3 = at_enc ^ prng_successor(nt, 96);
 577                         revstate = lfsr_recovery64(ks2, ks3);
 578                         lfsr_rollback_word(revstate, 0, 0);
 579                         lfsr_rollback_word(revstate, 0, 0);
 580                         lfsr_rollback_word(revstate, nr_enc, 1);
 581                         lfsr_rollback_word(revstate, uid ^ nt, 0);
 582
 583                         crypto1_get_lfsr(revstate, &lfsr);
 584                         printf("key> %x%x\n", (unsigned int)((lfsr & 0xFFFFFFFF00000000) >> 32), (unsigned int)(lfsr & 0xFFFFFFFF));
 585                         AddLogUint64(logHexFileName, "key> ", lfsr);
 586
 587                         int blockShift = ((traceCurBlock & 0xFC) + 3) * 16;
 588                         if (isBlockEmpty((traceCurBlock & 0xFC) + 3)) memcpy(traceCard + blockShift + 6, trailerAccessBytes, 4);
 589
 590                         if (traceCurKey) {
 591                                 num_to_bytes(lfsr, 6, traceCard + blockShift + 10);
 592                         } else {
 593                                 num_to_bytes(lfsr, 6, traceCard + blockShift);
 594                         }
 595                         if (wantSaveToEmlFile) saveTraceCard();
 596
 597                         if (traceCrypto1) {
 598                                 crypto1_destroy(traceCrypto1);
 599                         }
 600
 601                         // set cryptosystem state
 602                         traceCrypto1 = lfsr_recovery64(ks2, ks3);
 603
 604 //      nt = crypto1_word(traceCrypto1, nt ^ uid, 1) ^ nt;
 605
 606         /*      traceCrypto1 = crypto1_create(lfsr); // key in lfsr
 607                 crypto1_word(traceCrypto1, nt ^ uid, 0);
 608                 crypto1_word(traceCrypto1, ar, 1);
 609                 crypto1_word(traceCrypto1, 0, 0);
 610                 crypto1_word(traceCrypto1, 0, 0);*/
 611
 612                         return 0;
 613                 } else {
 614                         traceState = TRACE_ERROR;
 615                         return 1;
 616                 }
 617         break;
 618
 619         default:
 620                 traceState = TRACE_ERROR;
 621                 return 1;
 622         }
 623
 624         return 0;
 625 }