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

   1 //-----------------------------------------------------------------------------
   2 // Merlok, May 2011, 2012
   3 // Many authors, whom made it possible
   4 //
   5 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   6 // at your option, any later version. See the LICENSE.txt file for the text of
   7 // the license.
   8 //-----------------------------------------------------------------------------
   9 // Work with mifare cards.
  10 //-----------------------------------------------------------------------------
  11
  12 #include "mifareutil.h"
  13 #include "proxmark3.h"
  14 #include "apps.h"
  15 #include "util.h"
  16 #include "parity.h"
  17 #include "string.h"
  18
  19 #include "iso14443crc.h"
  20 #include "iso14443a.h"
  21 #include "crapto1/crapto1.h"
  22 #include "des.h"
  23
  24 int MF_DBGLEVEL = MF_DBG_ALL;
  25
  26 // crypto1 helpers
  27 void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){
  28         uint8_t bt = 0;
  29         int i;
  30
  31         if (len != 1) {
  32                 for (i = 0; i < len; i++)
  33                         data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
  34         } else {
  35                 bt = 0;
  36                 for (i = 0; i < 4; i++)
  37                         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], i)) << i;
  38
  39                 data[0] = bt;
  40         }
  41         return;
  42 }
  43
  44 void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {
  45         uint8_t bt = 0;
  46         int i;
  47         par[0] = 0;
  48
  49         for (i = 0; i < len; i++) {
  50                 bt = data[i];
  51                 data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
  52                 if((i&0x0007) == 0)
  53                         par[i>>3] = 0;
  54                 par[i>>3] |= (((filter(pcs->odd) ^ oddparity8(bt)) & 0x01)<<(7-(i&0x0007)));
  55         }
  56         return;
  57 }
  58
  59 uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {
  60         uint8_t bt = 0;
  61         int i;
  62
  63         for (i = 0; i < 4; i++)
  64                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, i)) << i;
  65
  66         return bt;
  67 }
  68
  69 // send X byte basic commands
  70 int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)
  71 {
  72         uint8_t dcmd[data_size+3];
  73         dcmd[0] = cmd;
  74         memcpy(dcmd+1,data,data_size);
  75         AppendCrc14443a(dcmd, data_size+1);
  76         ReaderTransmit(dcmd, sizeof(dcmd), timing);
  77         int len = ReaderReceive(answer, answer_parity);
  78         if(!len) {
  79                 if (MF_DBGLEVEL >= MF_DBG_ERROR)   Dbprintf("%02X Cmd failed. Card timeout.", cmd);
  80                         len = ReaderReceive(answer,answer_parity);
  81                 //return 0;
  82         }
  83         return len;
  84 }
  85
  86 // send 2 byte commands
  87 int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing)
  88 {
  89         uint8_t dcmd[4], ecmd[4];
  90         uint16_t pos, res;
  91         uint8_t par[1];                 // 1 Byte parity is enough here
  92         dcmd[0] = cmd;
  93         dcmd[1] = data;
  94         AppendCrc14443a(dcmd, 2);
  95
  96         memcpy(ecmd, dcmd, sizeof(dcmd));
  97
  98         if (crypted) {
  99                 par[0] = 0;
 100                 for (pos = 0; pos < 4; pos++)
 101                 {
 102                         ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];
 103                         par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos));
 104                 }
 105
 106                 ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);
 107
 108         } else {
 109                 ReaderTransmit(dcmd, sizeof(dcmd), timing);
 110         }
 111
 112         int len = ReaderReceive(answer, par);
 113
 114         if (answer_parity) *answer_parity = par[0];
 115
 116         if (crypted == CRYPT_ALL) {
 117                 if (len == 1) {
 118                         res = 0;
 119                         for (pos = 0; pos < 4; pos++)
 120                                 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], pos)) << pos;
 121
 122                         answer[0] = res;
 123
 124                 } else {
 125                         for (pos = 0; pos < len; pos++)
 126                         {
 127                                 answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];
 128                         }
 129                 }
 130         }
 131
 132         return len;
 133 }
 134
 135 // mifare classic commands
 136 int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested)
 137 {
 138         return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);
 139 }
 140
 141 int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested, uint32_t *ntptr, uint32_t *timing)
 142 {
 143         // variables
 144         int len;
 145         uint32_t pos;
 146         uint8_t tmp4[4];
 147         uint8_t par[1] = {0x00};
 148         byte_t nr[4];
 149         uint32_t nt, ntpp; // Supplied tag nonce
 150
 151         uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
 152         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 153         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 154
 155         // Transmit MIFARE_CLASSIC_AUTH
 156         len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);
 157         if (MF_DBGLEVEL >= 4)   Dbprintf("rand tag nonce len: %x", len);
 158         if (len != 4) return 1;
 159
 160         // "random" reader nonce:
 161         nr[0] = 0x55;
 162         nr[1] = 0x41;
 163         nr[2] = 0x49;
 164         nr[3] = 0x92;
 165
 166         // Save the tag nonce (nt)
 167         nt = bytes_to_num(receivedAnswer, 4);
 168
 169         //  ----------------------------- crypto1 create
 170         if (isNested)
 171                 crypto1_destroy(pcs);
 172
 173         // Init cipher with key
 174         crypto1_create(pcs, ui64Key);
 175
 176         if (isNested == AUTH_NESTED) {
 177                 // decrypt nt with help of new key
 178                 nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;
 179         } else {
 180                 // Load (plain) uid^nt into the cipher
 181                 crypto1_word(pcs, nt ^ uid, 0);
 182         }
 183
 184         // some statistic
 185         if (!ntptr && (MF_DBGLEVEL >= 3))
 186                 Dbprintf("auth uid: %08x nt: %08x", uid, nt);
 187
 188         // save Nt
 189         if (ntptr)
 190                 *ntptr = nt;
 191
 192         // Generate (encrypted) nr+parity by loading it into the cipher (Nr)
 193         par[0] = 0;
 194         for (pos = 0; pos < 4; pos++)
 195         {
 196                 mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];
 197                 par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));
 198         }
 199
 200         // Skip 32 bits in pseudo random generator
 201         nt = prng_successor(nt,32);
 202
 203         //  ar+parity
 204         for (pos = 4; pos < 8; pos++)
 205         {
 206                 nt = prng_successor(nt,8);
 207                 mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);
 208                 par[0] |= (((filter(pcs->odd) ^ oddparity8(nt)) & 0x01) << (7-pos));
 209         }
 210
 211         // Transmit reader nonce and reader answer
 212         ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);
 213
 214         // Receive 4 byte tag answer
 215         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 216         if (!len)
 217         {
 218                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Card timeout.");
 219                 return 2;
 220         }
 221
 222         memcpy(tmp4, receivedAnswer, 4);
 223         ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);
 224
 225         if (ntpp != bytes_to_num(tmp4, 4)) {
 226                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Error card response.");
 227                 return 3;
 228         }
 229
 230         return 0;
 231 }
 232
 233 int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
 234 {
 235         // variables
 236         int len;
 237         uint8_t bt[2];
 238
 239         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 240         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 241
 242         // command MIFARE_CLASSIC_READBLOCK
 243         len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 244         if (len == 1) {
 245                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 246                 return 1;
 247         }
 248         if (len != 18) {
 249                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: card timeout. len: %x", len);
 250                 return 2;
 251         }
 252
 253         memcpy(bt, receivedAnswer + 16, 2);
 254         AppendCrc14443a(receivedAnswer, 16);
 255         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 256                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd CRC response error.");
 257                 return 3;
 258         }
 259
 260         memcpy(blockData, receivedAnswer, 16);
 261         return 0;
 262 }
 263
 264 // mifare ultralight commands
 265 int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){
 266
 267         uint16_t len;
 268         uint8_t resp[4];
 269         uint8_t respPar[1];
 270         uint8_t key[4] = {0x00};
 271         memcpy(key, keybytes, 4);
 272
 273         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 274                 Dbprintf("EV1 Auth : %02x%02x%02x%02x", key[0], key[1], key[2], key[3]);
 275         len = mifare_sendcmd(0x1B, key, sizeof(key), resp, respPar, NULL);
 276         //len = mifare_sendcmd_short_mfuev1auth(NULL, 0, 0x1B, key, resp, respPar, NULL);
 277         if (len != 4) {
 278                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);
 279                 return 0;
 280         }
 281
 282         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 283                 Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);
 284
 285         memcpy(pack, resp, 4);
 286         return 1;
 287 }
 288
 289 int mifare_ultra_auth(uint8_t *keybytes){
 290
 291         /// 3des2k
 292
 293         uint8_t random_a[8] = {1,1,1,1,1,1,1,1};
 294         uint8_t random_b[8] = {0x00};
 295         uint8_t enc_random_b[8] = {0x00};
 296         uint8_t rnd_ab[16] = {0x00};
 297         uint8_t IV[8] = {0x00};
 298         uint8_t key[16] = {0x00};
 299         memcpy(key, keybytes, 16);
 300
 301         uint16_t len;
 302         uint8_t resp[19] = {0x00};
 303         uint8_t respPar[3] = {0,0,0};
 304
 305         // REQUEST AUTHENTICATION
 306         len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, resp, respPar ,NULL);
 307         if (len != 11) {
 308                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 309                 return 0;
 310         }
 311
 312         // tag nonce.
 313         memcpy(enc_random_b,resp+1,8);
 314
 315         // decrypt nonce.
 316         tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );
 317         rol(random_b,8);
 318         memcpy(rnd_ab  ,random_a,8);
 319         memcpy(rnd_ab+8,random_b,8);
 320
 321         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 322                 Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",
 323                         enc_random_b[0],enc_random_b[1],enc_random_b[2],enc_random_b[3],enc_random_b[4],enc_random_b[5],enc_random_b[6],enc_random_b[7]);
 324
 325                 Dbprintf("    B: %02x %02x %02x %02x %02x %02x %02x %02x",
 326                         random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);
 327
 328                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 329                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 330
 331                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 332                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );
 333         }
 334
 335         // encrypt    out, in, length, key, iv
 336         tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
 337         //len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, resp, respPar, NULL);
 338         len = mifare_sendcmd(0xAF, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL);
 339         if (len != 11) {
 340                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 341                 return 0;
 342         }
 343
 344         uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };
 345         uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };
 346         memcpy(enc_resp, resp+1, 8);
 347
 348         // decrypt    out, in, length, key, iv
 349         tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
 350         if ( memcmp(resp_random_a, random_a, 8) != 0 ) {
 351                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");
 352                 return 0;
 353         }
 354
 355         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 356                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 357                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],
 358                                 rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 359
 360                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 361                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],
 362                                 rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);
 363
 364                 Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",
 365                                 random_a[0],random_a[1],random_a[2],random_a[3],
 366                                 random_a[4],random_a[5],random_a[6],random_a[7]);
 367
 368                 Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",
 369                                 resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],
 370                                 resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);
 371         }
 372         return 1;
 373 }
 374
 375 int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData)
 376 {
 377         uint16_t len;
 378         uint8_t bt[2];
 379         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 380         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 381
 382
 383         len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 384         if (len == 1) {
 385                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 386                 return 1;
 387         }
 388         if (len != 18) {
 389                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);
 390                 return 2;
 391         }
 392
 393         memcpy(bt, receivedAnswer + 16, 2);
 394         AppendCrc14443a(receivedAnswer, 16);
 395         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 396                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");
 397                 return 3;
 398         }
 399
 400         memcpy(blockData, receivedAnswer, 14);
 401         return 0;
 402 }
 403
 404 int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
 405 {
 406         // variables
 407         uint16_t len, i;
 408         uint32_t pos;
 409         uint8_t par[3] = {0};           // enough for 18 Bytes to send
 410         byte_t res;
 411
 412         uint8_t d_block[18], d_block_enc[18];
 413         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 414         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 415
 416         // command MIFARE_CLASSIC_WRITEBLOCK
 417         len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 418
 419         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 420                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 421                 return 1;
 422         }
 423
 424         memcpy(d_block, blockData, 16);
 425         AppendCrc14443a(d_block, 16);
 426
 427         // crypto
 428         for (pos = 0; pos < 18; pos++)
 429         {
 430                 d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
 431                 par[pos>>3] |= (((filter(pcs->odd) ^ oddparity8(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));
 432         }
 433
 434         ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
 435
 436         // Receive the response
 437         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 438
 439         res = 0;
 440         for (i = 0; i < 4; i++)
 441                 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;
 442
 443         if ((len != 1) || (res != 0x0A)) {
 444                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd send data2 Error: %02x", res);
 445                 return 2;
 446         }
 447
 448         return 0;
 449 }
 450
 451 /* // command not needed, but left for future testing
 452 int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData)
 453 {
 454         uint16_t len;
 455         uint8_t par[3] = {0};  // enough for 18 parity bits
 456         uint8_t d_block[18] = {0x00};
 457         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 458         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 459
 460         len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 461
 462         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 463                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 464                         Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
 465                 return 1;
 466         }
 467
 468         memcpy(d_block, blockData, 16);
 469         AppendCrc14443a(d_block, 16);
 470
 471         ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
 472
 473         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 474
 475         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 476                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 477                         Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
 478                 return 2;
 479         }
 480         return 0;
 481 }
 482 */
 483
 484 int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData)
 485 {
 486         uint16_t len;
 487         uint8_t d_block[5] = {0x00};
 488         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 489         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 490
 491         // command MIFARE_CLASSIC_WRITEBLOCK
 492         d_block[0]= blockNo;
 493         memcpy(d_block+1,blockData,4);
 494         //AppendCrc14443a(d_block, 6);
 495
 496         len = mifare_sendcmd(0xA2, d_block, sizeof(d_block), receivedAnswer, receivedAnswerPar, NULL);
 497
 498         if (receivedAnswer[0] != 0x0A) {   //  0x0a - ACK
 499                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 500                         Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
 501                 return 1;
 502         }
 503         return 0;
 504 }
 505
 506 int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)
 507 {
 508         uint16_t len;
 509         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 510         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 511
 512         len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 513         if (len != 0) {
 514                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 515                         Dbprintf("halt error. response len: %x", len);
 516                 return 1;
 517         }
 518
 519         return 0;
 520 }
 521
 522 int mifare_ultra_halt()
 523 {
 524         uint16_t len;
 525         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 526         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 527
 528         len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 529         if (len != 0) {
 530                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 531                         Dbprintf("halt error. response len: %x", len);
 532                 return 1;
 533         }
 534         return 0;
 535 }
 536
 537
 538 // Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),
 539 // plus evtl. 8 sectors with 16 blocks each (4k cards)
 540 uint8_t NumBlocksPerSector(uint8_t sectorNo)
 541 {
 542         if (sectorNo < 32)
 543                 return 4;
 544         else
 545                 return 16;
 546 }
 547
 548 uint8_t FirstBlockOfSector(uint8_t sectorNo)
 549 {
 550         if (sectorNo < 32)
 551                 return sectorNo * 4;
 552         else
 553                 return 32*4 + (sectorNo - 32) * 16;
 554
 555 }
 556
 557
 558 // work with emulator memory
 559 void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
 560         uint8_t* emCARD = BigBuf_get_EM_addr();
 561         memcpy(emCARD + blockNum * 16, data, blocksCount * 16);
 562 }
 563
 564 void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {
 565         uint8_t* emCARD = BigBuf_get_EM_addr();
 566         memcpy(data, emCARD + blockNum * 16, blocksCount * 16);
 567 }
 568
 569 void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
 570         uint8_t* emCARD = BigBuf_get_EM_addr();
 571         memcpy(data, emCARD + bytePtr, byteCount);
 572 }
 573
 574 int emlCheckValBl(int blockNum) {
 575         uint8_t* emCARD = BigBuf_get_EM_addr();
 576         uint8_t* data = emCARD + blockNum * 16;
 577
 578         if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
 579                         (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||
 580                         (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||
 581                         (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||
 582                         (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||
 583                         (data[12] != (data[15] ^ 0xff))
 584                  )
 585                 return 1;
 586         return 0;
 587 }
 588
 589 int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
 590         uint8_t* emCARD = BigBuf_get_EM_addr();
 591         uint8_t* data = emCARD + blockNum * 16;
 592
 593         if (emlCheckValBl(blockNum)) {
 594                 return 1;
 595         }
 596
 597         memcpy(blReg, data, 4);
 598         *blBlock = data[12];
 599         return 0;
 600 }
 601
 602 int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
 603         uint8_t* emCARD = BigBuf_get_EM_addr();
 604         uint8_t* data = emCARD + blockNum * 16;
 605
 606         memcpy(data + 0, &blReg, 4);
 607         memcpy(data + 8, &blReg, 4);
 608         blReg = blReg ^ 0xffffffff;
 609         memcpy(data + 4, &blReg, 4);
 610
 611         data[12] = blBlock;
 612         data[13] = blBlock ^ 0xff;
 613         data[14] = blBlock;
 614         data[15] = blBlock ^ 0xff;
 615
 616         return 0;
 617 }
 618
 619 uint64_t emlGetKey(int sectorNum, int keyType) {
 620         uint8_t key[6];
 621         uint8_t* emCARD = BigBuf_get_EM_addr();
 622
 623         memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
 624         return bytes_to_num(key, 6);
 625 }
 626
 627 void emlClearMem(void) {
 628         int b;
 629
 630         const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 631         const uint8_t uid[]   =   {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
 632         uint8_t* emCARD = BigBuf_get_EM_addr();
 633
 634         memset(emCARD, 0, CARD_MEMORY_SIZE);
 635
 636         // fill sectors trailer data
 637         for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {
 638                 emlSetMem((uint8_t *)trailer, b , 1);
 639         }
 640
 641         // uid
 642         emlSetMem((uint8_t *)uid, 0, 1);
 643         return;
 644 }
 645
 646
 647 // Mifare desfire commands
 648 int mifare_sendcmd_special(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)
 649 {
 650     uint8_t dcmd[5] = {0x00};
 651     dcmd[0] = cmd;
 652     memcpy(dcmd+1,data,2);
 653         AppendCrc14443a(dcmd, 3);
 654
 655         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 656         int len = ReaderReceive(answer, answer_parity);
 657         if(!len) {
 658                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 659                         Dbprintf("Authentication failed. Card timeout.");
 660                 return 1;
 661     }
 662         return len;
 663 }
 664
 665 int mifare_sendcmd_special2(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer,uint8_t *answer_parity, uint32_t *timing)
 666 {
 667     uint8_t dcmd[20] = {0x00};
 668     dcmd[0] = cmd;
 669     memcpy(dcmd+1,data,17);
 670         AppendCrc14443a(dcmd, 18);
 671
 672         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 673         int len = ReaderReceive(answer, answer_parity);
 674         if(!len){
 675         if (MF_DBGLEVEL >= MF_DBG_ERROR)
 676                         Dbprintf("Authentication failed. Card timeout.");
 677                 return 1;
 678     }
 679         return len;
 680 }
 681
 682 int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){
 683
 684         int len;
 685         // load key, keynumber
 686         uint8_t data[2]={0x0a, 0x00};
 687         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 688         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 689
 690         len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);
 691         if (len == 1) {
 692                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 693                         Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 694                 return 1;
 695         }
 696
 697         if (len == 12) {
 698                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED)     {
 699                         Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 700                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 701                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 702                                 receivedAnswer[10],receivedAnswer[11]);
 703                         }
 704                         memcpy(blockData, receivedAnswer, 12);
 705                 return 0;
 706         }
 707         return 1;
 708 }
 709
 710 int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
 711
 712         int len;
 713         uint8_t data[17] = {0x00};
 714         data[0] = 0xAF;
 715         memcpy(data+1,key,16);
 716
 717         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 718         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 719
 720         len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);
 721
 722         if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {
 723                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 724                         Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);
 725                 return 1;
 726         }
 727
 728         if (len == 12){
 729                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 730                         Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 731                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 732                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 733                                 receivedAnswer[10],receivedAnswer[11]);
 734                         }
 735                 memcpy(blockData, receivedAnswer, 12);
 736                 return 0;
 737         }
 738         return 1;
 739 }