cvs.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 "proxmark3.h"
  13 #include "apps.h"
  14 #include "util.h"
  15 #include "string.h"
  16
  17 #include "iso14443crc.h"
  18 #include "iso14443a.h"
  19 #include "crapto1.h"
  20 #include "mifareutil.h"
  21 #include "parity.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
 149         // "random" reader nonce:
 150         byte_t nr[4] = {0x55, 0x41, 0x49, 0x92};
 151         //byte_t nr[4] = {0x01, 0x01, 0x01, 0x01};
 152
 153         uint32_t nt, ntpp; // Supplied tag nonce
 154
 155         uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
 156         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 157         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 158
 159         // Transmit MIFARE_CLASSIC_AUTH
 160         len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);
 161         if (MF_DBGLEVEL >= 4)   Dbprintf("rand tag nonce len: %x", len);
 162         if (len != 4) return 1;
 163
 164         // Save the tag nonce (nt)
 165         nt = bytes_to_num(receivedAnswer, 4);
 166
 167         //  ----------------------------- crypto1 create
 168         if (isNested)
 169                 crypto1_destroy(pcs);
 170
 171         // Init cipher with key
 172         crypto1_create(pcs, ui64Key);
 173
 174         if (isNested == AUTH_NESTED) {
 175                 // decrypt nt with help of new key
 176                 nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;
 177         } else {
 178                 // Load (plain) uid^nt into the cipher
 179                 crypto1_word(pcs, nt ^ uid, 0);
 180         }
 181
 182         // some statistic
 183         if (!ntptr && (MF_DBGLEVEL >= 3))
 184                 Dbprintf("auth uid: %08x nt: %08x", uid, nt);
 185
 186         // save Nt
 187         if (ntptr)
 188                 *ntptr = nt;
 189
 190         // Generate (encrypted) nr+parity by loading it into the cipher (Nr)
 191         par[0] = 0;
 192         for (pos = 0; pos < 4; pos++)
 193         {
 194                 mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];
 195                 par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));
 196         }
 197
 198         // Skip 32 bits in pseudo random generator
 199         nt = prng_successor(nt,32);
 200
 201         //  ar+parity
 202         for (pos = 4; pos < 8; pos++)
 203         {
 204                 nt = prng_successor(nt,8);
 205                 mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);
 206                 par[0] |= (((filter(pcs->odd) ^ oddparity8(nt & 0xff)) & 0x01) << (7-pos));
 207         }
 208
 209         // Transmit reader nonce and reader answer
 210         ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);
 211
 212         // Receive 4 byte tag answer
 213         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 214         if (!len)
 215         {
 216                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Card timeout.");
 217                 return 2;
 218         }
 219
 220         memcpy(tmp4, receivedAnswer, 4);
 221         ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);
 222
 223         if (ntpp != bytes_to_num(tmp4, 4)) {
 224                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Error card response.");
 225                 return 3;
 226         }
 227
 228         return 0;
 229 }
 230
 231 int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
 232 {
 233         // variables
 234         int len;
 235         uint8_t bt[2];
 236
 237         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 238         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 239
 240         // command MIFARE_CLASSIC_READBLOCK
 241         len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 242         if (len == 1) {
 243                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 244                 return 1;
 245         }
 246         if (len != 18) {
 247                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: card timeout. len: %x", len);
 248                 return 2;
 249         }
 250
 251         memcpy(bt, receivedAnswer + 16, 2);
 252         AppendCrc14443a(receivedAnswer, 16);
 253         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 254                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd CRC response error.");
 255                 return 3;
 256         }
 257
 258         memcpy(blockData, receivedAnswer, 16);
 259         return 0;
 260 }
 261
 262 // mifare ultralight commands
 263 int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){
 264
 265         uint16_t len;
 266         uint8_t resp[4];
 267         uint8_t respPar[1];
 268         uint8_t key[4] = {0x00};
 269         memcpy(key, keybytes, 4);
 270
 271         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 272                 Dbprintf("EV1 Auth : %02x%02x%02x%02x", key[0], key[1], key[2], key[3]);
 273         len = mifare_sendcmd(0x1B, key, sizeof(key), resp, respPar, NULL);
 274
 275         if (len != 4) {
 276                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);
 277                 return 0;
 278         }
 279
 280         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 281                 Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);
 282
 283         memcpy(pack, resp, 4);
 284         return 1;
 285 }
 286
 287 int mifare_ultra_auth(uint8_t *keybytes){
 288
 289         /// 3des2k
 290
 291         uint8_t random_a[8] = {1,1,1,1,1,1,1,1};
 292         uint8_t random_b[8] = {0x00};
 293         uint8_t enc_random_b[8] = {0x00};
 294         uint8_t rnd_ab[16] = {0x00};
 295         uint8_t IV[8] = {0x00};
 296         uint8_t key[16] = {0x00};
 297         memcpy(key, keybytes, 16);
 298
 299         uint16_t len;
 300         uint8_t resp[19] = {0x00};
 301         uint8_t respPar[3] = {0,0,0};
 302
 303         // REQUEST AUTHENTICATION
 304         len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, resp, respPar ,NULL);
 305         if (len != 11) {
 306                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 307                 return 0;
 308         }
 309
 310         // tag nonce.
 311         memcpy(enc_random_b,resp+1,8);
 312
 313         // decrypt nonce.
 314         tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );
 315         rol(random_b,8);
 316         memcpy(rnd_ab  ,random_a,8);
 317         memcpy(rnd_ab+8,random_b,8);
 318
 319         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 320                 Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",
 321                         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]);
 322
 323                 Dbprintf("    B: %02x %02x %02x %02x %02x %02x %02x %02x",
 324                         random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);
 325
 326                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 327                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 328
 329                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 330                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );
 331         }
 332
 333         // encrypt    out, in, length, key, iv
 334         tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
 335         //len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, resp, respPar, NULL);
 336         len = mifare_sendcmd(0xAF, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL);
 337         if (len != 11) {
 338                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 339                 return 0;
 340         }
 341
 342         uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };
 343         uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };
 344         memcpy(enc_resp, resp+1, 8);
 345
 346         // decrypt    out, in, length, key, iv
 347         tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
 348         if ( memcmp(resp_random_a, random_a, 8) != 0 ) {
 349                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");
 350                 return 0;
 351         }
 352
 353         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 354                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 355                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],
 356                                 rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 357
 358                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 359                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],
 360                                 rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);
 361
 362                 Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",
 363                                 random_a[0],random_a[1],random_a[2],random_a[3],
 364                                 random_a[4],random_a[5],random_a[6],random_a[7]);
 365
 366                 Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",
 367                                 resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],
 368                                 resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);
 369         }
 370         return 1;
 371 }
 372
 373 int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData)
 374 {
 375         uint16_t len;
 376         uint8_t bt[2];
 377         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 378         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 379
 380
 381         len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 382         if (len == 1) {
 383                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 384                 return 1;
 385         }
 386         if (len != 18) {
 387                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);
 388                 return 2;
 389         }
 390
 391         memcpy(bt, receivedAnswer + 16, 2);
 392         AppendCrc14443a(receivedAnswer, 16);
 393         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 394                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");
 395                 return 3;
 396         }
 397
 398         memcpy(blockData, receivedAnswer, 14);
 399         return 0;
 400 }
 401
 402 int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
 403 {
 404         // variables
 405         uint16_t len, i;
 406         uint32_t pos = 0;
 407         uint8_t par[3] = {0x00};                // enough for 18 Bytes to send
 408         byte_t res = 0;
 409
 410         uint8_t d_block[18], d_block_enc[18];
 411         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 412         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 413
 414         // command MIFARE_CLASSIC_WRITEBLOCK
 415         len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 416
 417         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 418                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 419                 return 1;
 420         }
 421
 422         memcpy(d_block, blockData, 16);
 423         AppendCrc14443a(d_block, 16);
 424
 425         // crypto
 426         for (pos = 0; pos < 18; pos++)
 427         {
 428                 d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
 429                 par[pos>>3] |= (((filter(pcs->odd) ^ oddparity8(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));
 430         }
 431
 432         ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
 433
 434         // Receive the response
 435         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 436
 437         res = 0;
 438         for (i = 0; i < 4; i++)
 439                 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;
 440
 441         if ((len != 1) || (res != 0x0A)) {
 442                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd send data2 Error: %02x", res);
 443                 return 2;
 444         }
 445
 446         return 0;
 447 }
 448
 449 /* // command not needed, but left for future testing
 450 int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData)
 451 {
 452         uint16_t len;
 453     uint8_t par[3] = {0};  // enough for 18 parity bits
 454         uint8_t d_block[18] = {0x00};
 455         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 456         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 457
 458     len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 459
 460     if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 461                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 462                         Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
 463         return 1;
 464     }
 465
 466         memcpy(d_block, blockData, 16);
 467     AppendCrc14443a(d_block, 16);
 468
 469         ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
 470
 471         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 472
 473         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 474                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 475                         Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
 476         return 2;
 477         }
 478     return 0;
 479 }
 480 */
 481
 482 int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData)
 483 {
 484     uint16_t len;
 485         uint8_t d_block[5] = {0x00};
 486         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 487         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 488
 489     // command MIFARE_CLASSIC_WRITEBLOCK
 490         d_block[0]= blockNo;
 491         memcpy(d_block+1,blockData,4);
 492         //AppendCrc14443a(d_block, 6);
 493
 494         len = mifare_sendcmd(0xA2, d_block, sizeof(d_block), receivedAnswer, receivedAnswerPar, NULL);
 495
 496     if (receivedAnswer[0] != 0x0A) {   //  0x0a - ACK
 497                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 498                         Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
 499         return 1;
 500     }
 501     return 0;
 502 }
 503 int mifare_classic_halt_ex(struct Crypto1State *pcs) {
 504         uint16_t len;
 505         uint8_t receivedAnswer[4];
 506         uint8_t receivedAnswerPar[4];
 507
 508         len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 509         if (len != 0) {
 510                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("halt error. response len: %x", len);
 511                 return 1;
 512         }
 513         return 0;
 514 }
 515 int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) {
 516         return mifare_classic_halt_ex(pcs);
 517 }
 518
 519 int mifare_ultra_halt()
 520 {
 521         uint16_t len;
 522         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 523         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 524
 525         len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 526         if (len != 0) {
 527                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 528                         Dbprintf("halt error. response len: %x", len);
 529                 return 1;
 530         }
 531         return 0;
 532 }
 533
 534
 535 // Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),
 536 // plus evtl. 8 sectors with 16 blocks each (4k cards)
 537 uint8_t NumBlocksPerSector(uint8_t sectorNo)
 538 {
 539         if (sectorNo < 32)
 540                 return 4;
 541         else
 542                 return 16;
 543 }
 544
 545 uint8_t FirstBlockOfSector(uint8_t sectorNo)
 546 {
 547         if (sectorNo < 32)
 548                 return sectorNo * 4;
 549         else
 550                 return 32*4 + (sectorNo - 32) * 16;
 551
 552 }
 553
 554
 555 // work with emulator memory
 556 void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
 557         emlSetMem_xt(data, blockNum, blocksCount, 16);
 558 }
 559
 560 void emlSetMem_xt(uint8_t *data, int blockNum, int blocksCount, int blockBtWidth) {
 561         uint8_t* emCARD = BigBuf_get_EM_addr();
 562         memcpy(emCARD + blockNum * blockBtWidth, data, blocksCount * blockBtWidth);
 563 }
 564
 565 void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {
 566         uint8_t* emCARD = BigBuf_get_EM_addr();
 567         memcpy(data, emCARD + blockNum * 16, blocksCount * 16);
 568 }
 569
 570 void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
 571         uint8_t* emCARD = BigBuf_get_EM_addr();
 572         memcpy(data, emCARD + bytePtr, byteCount);
 573 }
 574
 575 int emlCheckValBl(int blockNum) {
 576         uint8_t* emCARD = BigBuf_get_EM_addr();
 577         uint8_t* data = emCARD + blockNum * 16;
 578
 579         if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
 580                         (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||
 581                         (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||
 582                         (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||
 583                         (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||
 584                         (data[12] != (data[15] ^ 0xff))
 585                  )
 586                 return 1;
 587         return 0;
 588 }
 589
 590 int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
 591         uint8_t* emCARD = BigBuf_get_EM_addr();
 592         uint8_t* data = emCARD + blockNum * 16;
 593
 594         if (emlCheckValBl(blockNum)) {
 595                 return 1;
 596         }
 597
 598         memcpy(blReg, data, 4);
 599         *blBlock = data[12];
 600         return 0;
 601 }
 602
 603 int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
 604         uint8_t* emCARD = BigBuf_get_EM_addr();
 605         uint8_t* data = emCARD + blockNum * 16;
 606
 607         memcpy(data + 0, &blReg, 4);
 608         memcpy(data + 8, &blReg, 4);
 609         blReg = blReg ^ 0xffffffff;
 610         memcpy(data + 4, &blReg, 4);
 611
 612         data[12] = blBlock;
 613         data[13] = blBlock ^ 0xff;
 614         data[14] = blBlock;
 615         data[15] = blBlock ^ 0xff;
 616
 617         return 0;
 618 }
 619
 620 uint64_t emlGetKey(int sectorNum, int keyType) {
 621         uint8_t key[6];
 622         uint8_t* emCARD = BigBuf_get_EM_addr();
 623
 624         memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
 625         return bytes_to_num(key, 6);
 626 }
 627
 628 void emlClearMem(void) {
 629         int b;
 630
 631         const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 632         const uint8_t uid[]   =   {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
 633         uint8_t* emCARD = BigBuf_get_EM_addr();
 634
 635         memset(emCARD, 0, CARD_MEMORY_SIZE);
 636
 637         // fill sectors trailer data
 638         for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {
 639                 emlSetMem((uint8_t *)trailer, b , 1);
 640         }
 641
 642         // uid
 643         emlSetMem((uint8_t *)uid, 0, 1);
 644         return;
 645 }
 646
 647
 648 // Mifare desfire commands
 649 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)
 650 {
 651     uint8_t dcmd[5] = {0x00};
 652     dcmd[0] = cmd;
 653     memcpy(dcmd+1,data,2);
 654         AppendCrc14443a(dcmd, 3);
 655
 656         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 657         int len = ReaderReceive(answer, answer_parity);
 658         if(!len) {
 659                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 660                         Dbprintf("Authentication failed. Card timeout.");
 661                 return 1;
 662     }
 663         return len;
 664 }
 665
 666 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)
 667 {
 668     uint8_t dcmd[20] = {0x00};
 669     dcmd[0] = cmd;
 670     memcpy(dcmd+1,data,17);
 671         AppendCrc14443a(dcmd, 18);
 672
 673         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 674         int len = ReaderReceive(answer, answer_parity);
 675         if(!len){
 676         if (MF_DBGLEVEL >= MF_DBG_ERROR)
 677                         Dbprintf("Authentication failed. Card timeout.");
 678                 return 1;
 679     }
 680         return len;
 681 }
 682
 683 int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){
 684
 685         int len;
 686         // load key, keynumber
 687         uint8_t data[2]={0x0a, 0x00};
 688         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 689         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 690
 691         len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);
 692         if (len == 1) {
 693                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 694                         Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 695                 return 1;
 696         }
 697
 698         if (len == 12) {
 699                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED)     {
 700                         Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 701                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 702                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 703                                 receivedAnswer[10],receivedAnswer[11]);
 704                         }
 705                         memcpy(blockData, receivedAnswer, 12);
 706                 return 0;
 707         }
 708         return 1;
 709 }
 710
 711 int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
 712
 713         int len;
 714         uint8_t data[17] = {0x00};
 715         data[0] = 0xAF;
 716         memcpy(data+1,key,16);
 717
 718         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 719         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 720
 721         len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);
 722
 723         if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {
 724                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 725                         Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);
 726                 return 1;
 727         }
 728
 729         if (len == 12){
 730                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 731                         Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 732                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 733                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 734                                 receivedAnswer[10],receivedAnswer[11]);
 735                         }
 736                 memcpy(blockData, receivedAnswer, 12);
 737                 return 0;
 738         }
 739         return 1;
 740 }