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 #include "mifareutil.h"
  12
  13 int MF_DBGLEVEL = MF_DBG_ALL;
  14
  15 // crypto1 helpers
  16 void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){
  17         uint8_t bt = 0;
  18         int i;
  19
  20         if (len != 1) {
  21                 for (i = 0; i < len; i++)
  22                         data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
  23         } else {
  24                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 0)) << 0;
  25                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 1)) << 1;
  26                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 2)) << 2;
  27                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 3)) << 3;
  28                 data[0] = bt;
  29         }
  30         return;
  31 }
  32
  33 void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {
  34         uint8_t bt = 0;
  35         int i;
  36         par[0] = 0;
  37
  38         for (i = 0; i < len; i++) {
  39                 bt = data[i];
  40                 data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
  41                 if ( ( i & 0x0007 ) == 0)
  42                         par[ i >> 3 ] = 0;
  43                 par[ i >> 3 ] |= (((filter(pcs->odd) ^ oddparity8(bt)) & 0x01)<<(7-(i&0x0007)));
  44         }
  45 }
  46
  47 uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {
  48         uint8_t bt = 0;
  49         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 0)) << 0;
  50         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 1)) << 1;
  51         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 2)) << 2;
  52         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 3)) << 3;
  53         return bt;
  54 }
  55
  56 // send X byte basic commands
  57 int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing) {
  58         uint8_t dcmd[data_size+3];
  59     dcmd[0] = cmd;
  60         memcpy(dcmd+1, data, data_size);
  61         AppendCrc14443a(dcmd, data_size+1);
  62         ReaderTransmit(dcmd, sizeof(dcmd), timing);
  63         int len = ReaderReceive(answer, answer_parity);
  64         if(!len) {
  65                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
  66                         Dbprintf("%02X Cmd failed. Card timeout.", cmd);
  67                 len = ReaderReceive(answer,answer_parity);
  68     }
  69         return len;
  70 }
  71
  72 // send 2 byte commands
  73 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) {
  74         uint16_t pos, res;
  75         uint8_t dcmd[4] = {cmd, data, 0x00, 0x00};
  76         uint8_t ecmd[4] = {0x00, 0x00, 0x00, 0x00};
  77         uint8_t par[1] = {0x00};                        // 1 Byte parity is enough here
  78         AppendCrc14443a(dcmd, 2);
  79         memcpy(ecmd, dcmd, sizeof(dcmd));
  80
  81         if (crypted) {
  82                 par[0] = 0;
  83                 for (pos = 0; pos < 4; pos++) {
  84                         ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];
  85                         par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos));
  86                 }
  87                 ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);
  88         } else {
  89                 ReaderTransmit(dcmd, sizeof(dcmd), timing);
  90         }
  91
  92         int len = ReaderReceive(answer, par);
  93
  94         if (answer_parity) *answer_parity = par[0];
  95
  96         if (crypted == CRYPT_ALL) {
  97                 if (len == 1) {
  98                         res = 0;
  99                         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 0)) << 0;
 100                         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 1)) << 1;
 101                         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 2)) << 2;
 102                         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 3)) << 3;
 103                         answer[0] = res;
 104                 } else {
 105                         for (pos = 0; pos < len; pos++)
 106                                 answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];
 107                 }
 108         }
 109         return len;
 110 }
 111
 112 // mifare classic commands
 113 int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested) {
 114         return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);
 115 }
 116
 117 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) {
 118         int len;
 119         uint32_t pos;
 120         uint8_t par[1] = {0x00};
 121
 122         // "random" reader nonce:
 123         //byte_t nr[4] = {0x55, 0x41, 0x49, 0x92};
 124         byte_t nr[4] = {0x01, 0x01, 0x01, 0x01};
 125
 126         uint32_t nt, ntpp; // Supplied tag nonce
 127
 128         uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
 129         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 130         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 131
 132         // Transmit MIFARE_CLASSIC_AUTH
 133         len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);
 134         if (MF_DBGLEVEL >= 4)   Dbprintf("rand tag nonce len: %x", len);
 135         if (len != 4) return 1;
 136
 137         // Save the tag nonce (nt)
 138         nt = bytes_to_num(receivedAnswer, 4);
 139
 140         //  ----------------------------- crypto1 create
 141         if (isNested)
 142                 crypto1_destroy(pcs);
 143
 144         // Init cipher with key
 145         crypto1_create(pcs, ui64Key);
 146
 147         if (isNested == AUTH_NESTED) {
 148                 // decrypt nt with help of new key
 149                 nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;
 150         } else {
 151                 // Load (plain) uid^nt into the cipher
 152                 crypto1_word(pcs, nt ^ uid, 0);
 153         }
 154
 155         // some statistic
 156         if (!ntptr && (MF_DBGLEVEL >= 3))
 157                 Dbprintf("auth uid: %08x nt: %08x", uid, nt);
 158
 159         // save Nt
 160         if (ntptr)
 161                 *ntptr = nt;
 162
 163         // Generate (encrypted) nr+parity by loading it into the cipher (Nr)
 164         par[0] = 0;
 165         for (pos = 0; pos < 4; pos++) {
 166                 mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];
 167                 par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));
 168         }
 169
 170         // Skip 32 bits in pseudo random generator
 171         nt = prng_successor(nt, 32);
 172
 173         //  ar+parity
 174         for (pos = 4; pos < 8; pos++) {
 175                 nt = prng_successor(nt,8);
 176                 mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);
 177                 par[0] |= (((filter(pcs->odd) ^ oddparity8(nt & 0xff)) & 0x01) << (7-pos));
 178         }
 179
 180         // Transmit reader nonce and reader answer
 181         ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);
 182
 183         // Receive 4 byte tag answer
 184         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 185         if (!len) {
 186                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Card timeout.");
 187                 return 2;
 188         }
 189
 190         ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);
 191
 192         if (ntpp != bytes_to_num(receivedAnswer, 4)) {
 193                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Error card response.");
 194                 return 3;
 195         }
 196         return 0;
 197 }
 198
 199 int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) {
 200
 201         int len;
 202         uint8_t bt[2] = {0x00, 0x00};
 203         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 204         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 205
 206         len = mifare_sendcmd_short(pcs, 1, ISO14443A_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 207         if (len == 1) {
 208                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 209                 return 1;
 210         }
 211         if (len != 18) {
 212                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: card timeout. len: %x", len);
 213                 return 2;
 214         }
 215
 216         memcpy(bt, receivedAnswer + 16, 2);
 217         AppendCrc14443a(receivedAnswer, 16);
 218         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 219                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd CRC response error.");
 220                 return 3;
 221         }
 222
 223         memcpy(blockData, receivedAnswer, 16);
 224         return 0;
 225 }
 226
 227 // mifare ultralight commands
 228 int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){
 229
 230         uint16_t len = 0;
 231         uint8_t resp[4] = {0x00, 0x00, 0x00, 0x00};
 232         uint8_t respPar[1] = {0x00};
 233         uint8_t key[4] = {0x00, 0x00, 0x00, 0x00};
 234         memcpy(key, keybytes, 4);
 235
 236         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 237                 Dbprintf("EV1 Auth : %02x%02x%02x%02x", key[0], key[1], key[2], key[3]);
 238
 239         len = mifare_sendcmd(0x1B, key, sizeof(key), resp, respPar, NULL);
 240
 241         if (len != 4) {
 242                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);
 243                 return 0;
 244         }
 245
 246         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 247                 Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);
 248
 249         memcpy(pack, resp, 4);
 250         return 1;
 251 }
 252
 253 int mifare_ultra_auth(uint8_t *keybytes){
 254
 255         /// 3des2k
 256         uint8_t random_a[8] = {1,1,1,1,1,1,1,1};
 257         uint8_t random_b[8] = {0x00};
 258         uint8_t enc_random_b[8] = {0x00};
 259         uint8_t rnd_ab[16] = {0x00};
 260         uint8_t IV[8] = {0x00};
 261         uint8_t key[16] = {0x00};
 262         memcpy(key, keybytes, 16);
 263
 264         uint16_t len = 0;
 265         uint8_t resp[19] = {0x00};
 266         uint8_t respPar[3] = {0,0,0};
 267
 268         // REQUEST AUTHENTICATION
 269         len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, resp, respPar ,NULL);
 270         if (len != 11) {
 271                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 272                 return 0;
 273         }
 274
 275         // tag nonce.
 276         memcpy(enc_random_b,resp+1,8);
 277
 278         // decrypt nonce.
 279         tdes_2key_dec((void*)random_b, (void*)enc_random_b, sizeof(random_b), (const void*)key, IV );
 280         rol(random_b,8);
 281         memcpy(rnd_ab  ,random_a,8);
 282         memcpy(rnd_ab+8,random_b,8);
 283
 284         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 285                 Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",
 286                         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]);
 287
 288                 Dbprintf("    B: %02x %02x %02x %02x %02x %02x %02x %02x",
 289                         random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);
 290
 291                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 292                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 293
 294                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 295                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );
 296         }
 297
 298         // encrypt    out, in, length, key, iv
 299         tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
 300
 301         len = mifare_sendcmd(0xAF, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL);
 302         if (len != 11) {
 303                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 304                 return 0;
 305         }
 306
 307         uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };
 308         uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };
 309         memcpy(enc_resp, resp+1, 8);
 310
 311         // decrypt    out, in, length, key, iv
 312         tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
 313         if ( memcmp(resp_random_a, random_a, 8) != 0 ) {
 314                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");
 315                 return 0;
 316         }
 317
 318         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 319                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 320                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],
 321                                 rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 322
 323                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 324                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],
 325                                 rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);
 326
 327                 Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",
 328                                 random_a[0],random_a[1],random_a[2],random_a[3],
 329                                 random_a[4],random_a[5],random_a[6],random_a[7]);
 330
 331                 Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",
 332                                 resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],
 333                                 resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);
 334         }
 335         return 1;
 336 }
 337
 338 int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData) {
 339         uint16_t len = 0;
 340         uint8_t bt[2] = {0x00, 0x00};
 341         uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
 342         uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
 343
 344         len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 345         if (len == 1) {
 346                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 347                 return 1;
 348         }
 349         if (len != 18) {
 350                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);
 351                 return 2;
 352         }
 353
 354         memcpy(bt, receivedAnswer + 16, 2);
 355         AppendCrc14443a(receivedAnswer, 16);
 356         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 357                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");
 358                 return 3;
 359         }
 360
 361         memcpy(blockData, receivedAnswer, 14);
 362         return 0;
 363 }
 364
 365 int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) {
 366         // variables
 367         uint16_t len = 0;
 368         uint32_t pos = 0;
 369         uint8_t par[3] = {0x00, 0x00, 0x00}; // enough for 18 Bytes to send
 370         byte_t res = 0;
 371
 372         uint8_t d_block[18], d_block_enc[18];
 373         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 374         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 375
 376         // command MIFARE_CLASSIC_WRITEBLOCK
 377         len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 378
 379         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 380                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 381                 return 1;
 382         }
 383
 384         memcpy(d_block, blockData, 16);
 385         AppendCrc14443a(d_block, 16);
 386
 387         // crypto
 388         for (pos = 0; pos < 18; pos++) {
 389                 d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
 390                 par[pos>>3] |= (((filter(pcs->odd) ^ oddparity8(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));
 391         }
 392
 393         ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
 394
 395         // Receive the response
 396         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 397
 398         res = 0;
 399         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 0)) << 0;
 400         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 1)) << 1;
 401         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 2)) << 2;
 402         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 3)) << 3;
 403
 404         if ((len != 1) || (res != 0x0A)) {
 405                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd send data2 Error: %02x", res);
 406                 return 2;
 407         }
 408         return 0;
 409 }
 410
 411 /* // command not needed, but left for future testing
 412 int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData) {
 413         uint16_t len;
 414     uint8_t par[3] = {0};  // enough for 18 parity bits
 415         uint8_t d_block[18] = {0x00};
 416         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 417         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 418
 419     len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 420
 421     if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 422                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 423                         Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
 424         return 1;
 425     }
 426
 427         memcpy(d_block, blockData, 16);
 428     AppendCrc14443a(d_block, 16);
 429
 430         ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
 431
 432         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 433
 434         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 435                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 436                         Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
 437         return 2;
 438         }
 439     return 0;
 440 }
 441 */
 442
 443 int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData) {
 444     uint16_t len = 0;
 445         uint8_t block[5] = {blockNo, 0x00, 0x00, 0x00, 0x00 };
 446         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 447         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 448
 449     // command MIFARE_CLASSIC_WRITEBLOCK
 450         memcpy(block+1, blockData, 4);
 451
 452         len = mifare_sendcmd( MIFARE_ULC_WRITE, block, sizeof(block), receivedAnswer, receivedAnswerPar, NULL);
 453
 454     if (receivedAnswer[0] != 0x0A) {   //  0x0a - ACK
 455                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 456                         Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
 457         return 1;
 458     }
 459     return 0;
 460 }
 461 int mifare_classic_halt_ex(struct Crypto1State *pcs) {
 462         uint8_t receivedAnswer[4] = {0x00, 0x00, 0x00, 0x00};
 463         uint16_t len = mifare_sendcmd_short(pcs, (pcs == NULL) ? CRYPT_NONE : CRYPT_ALL, 0x50, 0x00, receivedAnswer, NULL, NULL);
 464         if (len != 0) {
 465                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("halt warning. response len: %x", len);
 466                 return 1;
 467         }
 468         return 0;
 469 }
 470 int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) {
 471         return mifare_classic_halt_ex(pcs);
 472 }
 473
 474 int mifare_ultra_halt() {
 475         uint16_t len = 0;
 476         uint8_t receivedAnswer[4] = {0x00, 0x00, 0x00, 0x00};
 477         len = mifare_sendcmd_short(NULL, CRYPT_NONE, 0x50, 0x00, receivedAnswer, NULL, NULL);
 478         if (len != 0) {
 479                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("halt error. response len: %x", len);
 480                 return 1;
 481         }
 482         return 0;
 483 }
 484
 485
 486 // Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),
 487 // plus evtl. 8 sectors with 16 blocks each (4k cards)
 488 uint8_t NumBlocksPerSector(uint8_t sectorNo) {
 489         return (sectorNo < 32) ? 4 : 16;
 490 }
 491
 492 uint8_t FirstBlockOfSector(uint8_t sectorNo) {
 493         if (sectorNo < 32)
 494                 return sectorNo * 4;
 495         else
 496                 return 32*4 + (sectorNo - 32) * 16;
 497
 498 }
 499
 500 // work with emulator memory
 501 void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
 502         emlSetMem_xt(data, blockNum, blocksCount, 16);
 503 }
 504
 505 void emlSetMem_xt(uint8_t *data, int blockNum, int blocksCount, int blockBtWidth) {
 506         uint8_t* emCARD = BigBuf_get_EM_addr();
 507         memcpy(emCARD + blockNum * blockBtWidth, data, blocksCount * blockBtWidth);
 508 }
 509
 510 void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {
 511         uint8_t* emCARD = BigBuf_get_EM_addr();
 512         memcpy(data, emCARD + blockNum * 16, blocksCount * 16);
 513 }
 514
 515 void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
 516         uint8_t* emCARD = BigBuf_get_EM_addr();
 517         memcpy(data, emCARD + bytePtr, byteCount);
 518 }
 519
 520 int emlCheckValBl(int blockNum) {
 521         uint8_t* emCARD = BigBuf_get_EM_addr();
 522         uint8_t* data = emCARD + blockNum * 16;
 523
 524         if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
 525                         (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||
 526                         (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||
 527                         (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||
 528                         (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||
 529                         (data[12] != (data[15] ^ 0xff))
 530                  )
 531                 return 1;
 532         return 0;
 533 }
 534
 535 int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
 536         uint8_t* emCARD = BigBuf_get_EM_addr();
 537         uint8_t* data = emCARD + blockNum * 16;
 538
 539         if (emlCheckValBl(blockNum))
 540                 return 1;
 541
 542         memcpy(blReg, data, 4);
 543         *blBlock = data[12];
 544         return 0;
 545 }
 546
 547 int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
 548         uint8_t* emCARD = BigBuf_get_EM_addr();
 549         uint8_t* data = emCARD + blockNum * 16;
 550
 551         memcpy(data + 0, &blReg, 4);
 552         memcpy(data + 8, &blReg, 4);
 553         blReg = blReg ^ 0xffffffff;
 554         memcpy(data + 4, &blReg, 4);
 555
 556         data[12] = blBlock;
 557         data[13] = blBlock ^ 0xff;
 558         data[14] = blBlock;
 559         data[15] = blBlock ^ 0xff;
 560
 561         return 0;
 562 }
 563
 564 uint64_t emlGetKey(int sectorNum, int keyType) {
 565         uint8_t key[6] = {0x00};
 566         uint8_t* emCARD = BigBuf_get_EM_addr();
 567
 568         memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
 569         return bytes_to_num(key, 6);
 570 }
 571
 572 void emlClearMem(void) {
 573         int b;
 574
 575         const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 576         const uint8_t uid[]   =   {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
 577         uint8_t* emCARD = BigBuf_get_EM_addr();
 578
 579         memset(emCARD, 0, CARD_MEMORY_SIZE);
 580
 581         // fill sectors trailer data
 582         for(b = 3; b < 256; b<127?(b+=4):(b+=16))
 583                 emlSetMem((uint8_t *)trailer, b , 1);
 584
 585         // uid
 586         emlSetMem((uint8_t *)uid, 0, 1);
 587         return;
 588 }
 589
 590
 591 // Mifare desfire commands
 592 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)
 593 {
 594     uint8_t dcmd[5] = {cmd, data[0], data[1], 0x00, 0x00};
 595         AppendCrc14443a(dcmd, 3);
 596
 597         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 598         int len = ReaderReceive(answer, answer_parity);
 599         if(!len) {
 600                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 601                         Dbprintf("Authentication failed. Card timeout.");
 602                 return 1;
 603     }
 604         return len;
 605 }
 606
 607 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)
 608 {
 609     uint8_t dcmd[20] = {0x00};
 610     dcmd[0] = cmd;
 611     memcpy(dcmd+1,data,17);
 612         AppendCrc14443a(dcmd, 18);
 613
 614         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 615         int len = ReaderReceive(answer, answer_parity);
 616         if(!len){
 617         if (MF_DBGLEVEL >= MF_DBG_ERROR)
 618                         Dbprintf("Authentication failed. Card timeout.");
 619                 return 1;
 620     }
 621         return len;
 622 }
 623
 624 int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){
 625
 626         int len;
 627         // load key, keynumber
 628         uint8_t data[2]={0x0a, 0x00};
 629         uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
 630         uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
 631
 632         len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);
 633         if (len == 1) {
 634                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 635                         Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 636                 return 1;
 637         }
 638
 639         if (len == 12) {
 640                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED)     {
 641                         Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 642                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 643                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 644                                 receivedAnswer[10],receivedAnswer[11]);
 645                         }
 646                         memcpy(blockData, receivedAnswer, 12);
 647                 return 0;
 648         }
 649         return 1;
 650 }
 651
 652 int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
 653
 654         int len;
 655         uint8_t data[17] = {0x00};
 656         data[0] = 0xAF;
 657         memcpy(data+1,key,16);
 658
 659         uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
 660         uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
 661
 662         len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);
 663
 664         if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {
 665                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 666                         Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);
 667                 return 1;
 668         }
 669
 670         if (len == 12){
 671                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 672                         Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 673                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 674                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 675                                 receivedAnswer[10],receivedAnswer[11]);
 676                         }
 677                 memcpy(blockData, receivedAnswer, 12);
 678                 return 0;
 679         }
 680         return 1;
 681 }