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 "mifareutil.h"
  13
  14 int MF_DBGLEVEL = MF_DBG_ALL;
  15
  16 // crypto1 helpers
  17 void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){
  18         uint8_t bt = 0;
  19         int i;
  20
  21         if (len != 1) {
  22                 for (i = 0; i < len; i++)
  23                         data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
  24         } else {
  25                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 0)) << 0;
  26                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 1)) << 1;
  27                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 2)) << 2;
  28                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 3)) << 3;
  29                 data[0] = bt;
  30         }
  31         return;
  32 }
  33
  34 void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {
  35         uint8_t bt = 0;
  36         int i;
  37         par[0] = 0;
  38
  39         for (i = 0; i < len; i++) {
  40                 bt = data[i];
  41                 data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
  42                 if ( ( i & 0x0007 ) == 0)
  43                         par[ i >> 3 ] = 0;
  44                 par[ i >> 3 ] |= (((filter(pcs->odd) ^ oddparity8(bt)) & 0x01)<<(7-(i&0x0007)));
  45         }
  46 }
  47
  48 uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {
  49         uint8_t bt = 0;
  50         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 0)) << 0;
  51         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 1)) << 1;
  52         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 2)) << 2;
  53         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 3)) << 3;
  54         return bt;
  55 }
  56
  57 // send X byte basic commands
  58 int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing) {
  59         uint8_t dcmd[data_size+3];
  60     dcmd[0] = cmd;
  61         memcpy(dcmd+1, data, data_size);
  62         AppendCrc14443a(dcmd, data_size+1);
  63         ReaderTransmit(dcmd, sizeof(dcmd), timing);
  64         int len = ReaderReceive(answer, answer_parity);
  65         if(!len) {
  66                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
  67                         Dbprintf("%02X Cmd failed. Card timeout.", cmd);
  68                 len = ReaderReceive(answer,answer_parity);
  69     }
  70         return len;
  71 }
  72
  73 // send 2 byte commands
  74 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) {
  75         uint16_t pos, res;
  76         uint8_t dcmd[4] = {cmd, data, 0x00, 0x00};
  77         uint8_t ecmd[4] = {0x00, 0x00, 0x00, 0x00};
  78         uint8_t par[1] = {0x00};                        // 1 Byte parity is enough here
  79         AppendCrc14443a(dcmd, 2);
  80         memcpy(ecmd, dcmd, sizeof(dcmd));
  81
  82         if (crypted) {
  83                 par[0] = 0;
  84                 for (pos = 0; pos < 4; pos++) {
  85                         ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];
  86                         par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos));
  87                 }
  88                 ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);
  89         } else {
  90                 ReaderTransmit(dcmd, sizeof(dcmd), timing);
  91         }
  92
  93         int len = ReaderReceive(answer, par);
  94
  95         if (answer_parity) *answer_parity = par[0];
  96
  97         if (crypted == CRYPT_ALL) {
  98                 if (len == 1) {
  99                         res = 0;
 100                         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 0)) << 0;
 101                         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 1)) << 1;
 102                         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 2)) << 2;
 103                         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 3)) << 3;
 104                         answer[0] = res;
 105                 } else {
 106                         for (pos = 0; pos < len; pos++)
 107                                 answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];
 108                 }
 109         }
 110         return len;
 111 }
 112
 113 // mifare classic commands
 114 int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested) {
 115         return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);
 116 }
 117
 118 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) {
 119         int len;
 120         uint32_t pos;
 121         uint8_t par[1] = {0x00};
 122
 123         // "random" reader nonce:
 124         //byte_t nr[4] = {0x55, 0x41, 0x49, 0x92};
 125         byte_t nr[4] = {0x01, 0x01, 0x01, 0x01};
 126
 127         uint32_t nt, ntpp; // Supplied tag nonce
 128
 129         uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
 130         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 131         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 132
 133         // Transmit MIFARE_CLASSIC_AUTH
 134         len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);
 135         if (MF_DBGLEVEL >= 4)   Dbprintf("rand tag nonce len: %x", len);
 136         if (len != 4) return 1;
 137
 138         // Save the tag nonce (nt)
 139         nt = bytes_to_num(receivedAnswer, 4);
 140
 141         //  ----------------------------- crypto1 create
 142         if (isNested)
 143                 crypto1_destroy(pcs);
 144
 145         // Init cipher with key
 146         crypto1_create(pcs, ui64Key);
 147
 148         if (isNested == AUTH_NESTED) {
 149                 // decrypt nt with help of new key
 150                 nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;
 151         } else {
 152                 // Load (plain) uid^nt into the cipher
 153                 crypto1_word(pcs, nt ^ uid, 0);
 154         }
 155
 156         // some statistic
 157         if (!ntptr && (MF_DBGLEVEL >= 3))
 158                 Dbprintf("auth uid: %08x nt: %08x", uid, nt);
 159
 160         // save Nt
 161         if (ntptr)
 162                 *ntptr = nt;
 163
 164         // Generate (encrypted) nr+parity by loading it into the cipher (Nr)
 165         par[0] = 0;
 166         for (pos = 0; pos < 4; pos++) {
 167                 mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];
 168                 par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));
 169         }
 170
 171         // Skip 32 bits in pseudo random generator
 172         nt = prng_successor(nt, 32);
 173
 174         //  ar+parity
 175         for (pos = 4; pos < 8; pos++) {
 176                 nt = prng_successor(nt,8);
 177                 mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);
 178                 par[0] |= (((filter(pcs->odd) ^ oddparity8(nt & 0xff)) & 0x01) << (7-pos));
 179         }
 180
 181         // Transmit reader nonce and reader answer
 182         ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);
 183
 184         // Receive 4 byte tag answer
 185         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 186         if (!len) {
 187                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Card timeout.");
 188                 return 2;
 189         }
 190
 191         ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);
 192
 193         if (ntpp != bytes_to_num(receivedAnswer, 4)) {
 194                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Error card response.");
 195                 return 3;
 196         }
 197         return 0;
 198 }
 199
 200 int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) {
 201
 202         int len;
 203         uint8_t bt[2] = {0x00, 0x00};
 204         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 205         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 206
 207         len = mifare_sendcmd_short(pcs, 1, ISO14443A_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 208         if (len == 1) {
 209                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 210                 return 1;
 211         }
 212         if (len != 18) {
 213                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: card timeout. len: %x", len);
 214                 return 2;
 215         }
 216
 217         memcpy(bt, receivedAnswer + 16, 2);
 218         AppendCrc14443a(receivedAnswer, 16);
 219         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 220                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd CRC response error.");
 221                 return 3;
 222         }
 223
 224         memcpy(blockData, receivedAnswer, 16);
 225         return 0;
 226 }
 227
 228 // mifare ultralight commands
 229 int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){
 230
 231         uint16_t len = 0;
 232         uint8_t resp[4] = {0x00, 0x00, 0x00, 0x00};
 233         uint8_t respPar[1] = {0x00};
 234         uint8_t key[4] = {0x00, 0x00, 0x00, 0x00};
 235         memcpy(key, keybytes, 4);
 236
 237         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 238                 Dbprintf("EV1 Auth : %02x%02x%02x%02x", key[0], key[1], key[2], key[3]);
 239
 240         len = mifare_sendcmd(0x1B, key, sizeof(key), resp, respPar, NULL);
 241
 242         if (len != 4) {
 243                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);
 244                 return 0;
 245         }
 246
 247         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 248                 Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);
 249
 250         memcpy(pack, resp, 4);
 251         return 1;
 252 }
 253
 254 int mifare_ultra_auth(uint8_t *keybytes){
 255
 256         /// 3des2k
 257         uint8_t random_a[8] = {1,1,1,1,1,1,1,1};
 258         uint8_t random_b[8] = {0x00};
 259         uint8_t enc_random_b[8] = {0x00};
 260         uint8_t rnd_ab[16] = {0x00};
 261         uint8_t IV[8] = {0x00};
 262         uint8_t key[16] = {0x00};
 263         memcpy(key, keybytes, 16);
 264
 265         uint16_t len = 0;
 266         uint8_t resp[19] = {0x00};
 267         uint8_t respPar[3] = {0,0,0};
 268
 269         // REQUEST AUTHENTICATION
 270         len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, resp, respPar ,NULL);
 271         if (len != 11) {
 272                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 273                 return 0;
 274         }
 275
 276         // tag nonce.
 277         memcpy(enc_random_b,resp+1,8);
 278
 279         // decrypt nonce.
 280         tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );
 281         rol(random_b,8);
 282         memcpy(rnd_ab  ,random_a,8);
 283         memcpy(rnd_ab+8,random_b,8);
 284
 285         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 286                 Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",
 287                         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]);
 288
 289                 Dbprintf("    B: %02x %02x %02x %02x %02x %02x %02x %02x",
 290                         random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);
 291
 292                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 293                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 294
 295                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 296                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );
 297         }
 298
 299         // encrypt    out, in, length, key, iv
 300         tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
 301
 302         len = mifare_sendcmd(0xAF, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL);
 303         if (len != 11) {
 304                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 305                 return 0;
 306         }
 307
 308         uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };
 309         uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };
 310         memcpy(enc_resp, resp+1, 8);
 311
 312         // decrypt    out, in, length, key, iv
 313         tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
 314         if ( memcmp(resp_random_a, random_a, 8) != 0 ) {
 315                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");
 316                 return 0;
 317         }
 318
 319         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 320                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 321                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],
 322                                 rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 323
 324                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 325                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],
 326                                 rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);
 327
 328                 Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",
 329                                 random_a[0],random_a[1],random_a[2],random_a[3],
 330                                 random_a[4],random_a[5],random_a[6],random_a[7]);
 331
 332                 Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",
 333                                 resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],
 334                                 resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);
 335         }
 336         return 1;
 337 }
 338
 339 int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData) {
 340         uint16_t len = 0;
 341         uint8_t bt[2] = {0x00, 0x00};
 342         uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
 343         uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
 344
 345         len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 346         if (len == 1) {
 347                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 348                 return 1;
 349         }
 350         if (len != 18) {
 351                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);
 352                 return 2;
 353         }
 354
 355         memcpy(bt, receivedAnswer + 16, 2);
 356         AppendCrc14443a(receivedAnswer, 16);
 357         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 358                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");
 359                 return 3;
 360         }
 361
 362         memcpy(blockData, receivedAnswer, 14);
 363         return 0;
 364 }
 365
 366 int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) {
 367         // variables
 368         uint16_t len = 0;
 369         uint32_t pos = 0;
 370         uint8_t par[3] = {0x00, 0x00, 0x00}; // enough for 18 Bytes to send
 371         byte_t res = 0;
 372
 373         uint8_t d_block[18], d_block_enc[18];
 374         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 375         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 376
 377         // command MIFARE_CLASSIC_WRITEBLOCK
 378         len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 379
 380         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 381                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 382                 return 1;
 383         }
 384
 385         memcpy(d_block, blockData, 16);
 386         AppendCrc14443a(d_block, 16);
 387
 388         // crypto
 389         for (pos = 0; pos < 18; pos++) {
 390                 d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
 391                 par[pos>>3] |= (((filter(pcs->odd) ^ oddparity8(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));
 392         }
 393
 394         ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
 395
 396         // Receive the response
 397         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 398
 399         res = 0;
 400         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 0)) << 0;
 401         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 1)) << 1;
 402         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 2)) << 2;
 403         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 3)) << 3;
 404
 405         if ((len != 1) || (res != 0x0A)) {
 406                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd send data2 Error: %02x", res);
 407                 return 2;
 408         }
 409         return 0;
 410 }
 411
 412 /* // command not needed, but left for future testing
 413 int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData) {
 414         uint16_t len;
 415     uint8_t par[3] = {0};  // enough for 18 parity bits
 416         uint8_t d_block[18] = {0x00};
 417         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 418         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 419
 420     len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 421
 422     if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 423                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 424                         Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
 425         return 1;
 426     }
 427
 428         memcpy(d_block, blockData, 16);
 429     AppendCrc14443a(d_block, 16);
 430
 431         ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
 432
 433         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 434
 435         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 436                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 437                         Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
 438         return 2;
 439         }
 440     return 0;
 441 }
 442 */
 443
 444 int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData) {
 445     uint16_t len = 0;
 446         uint8_t block[5] = {blockNo, 0x00, 0x00, 0x00, 0x00 };
 447         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 448         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 449
 450     // command MIFARE_CLASSIC_WRITEBLOCK
 451         memcpy(block+1, blockData, 4);
 452
 453         len = mifare_sendcmd( MIFARE_ULC_WRITE, block, sizeof(block), receivedAnswer, receivedAnswerPar, NULL);
 454
 455     if (receivedAnswer[0] != 0x0A) {   //  0x0a - ACK
 456                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 457                         Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
 458         return 1;
 459     }
 460     return 0;
 461 }
 462 int mifare_classic_halt_ex(struct Crypto1State *pcs) {
 463         uint8_t receivedAnswer[4] = {0x00, 0x00, 0x00, 0x00};
 464         uint16_t len = mifare_sendcmd_short(pcs, (pcs == NULL) ? CRYPT_NONE : CRYPT_ALL, 0x50, 0x00, receivedAnswer, NULL, NULL);
 465         if (len != 0) {
 466                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("halt warning. response len: %x", len);
 467                 return 1;
 468         }
 469         return 0;
 470 }
 471 int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) {
 472         return mifare_classic_halt_ex(pcs);
 473 }
 474
 475 int mifare_ultra_halt() {
 476         uint16_t len = 0;
 477         uint8_t receivedAnswer[4] = {0x00, 0x00, 0x00, 0x00};
 478         len = mifare_sendcmd_short(NULL, CRYPT_NONE, 0x50, 0x00, receivedAnswer, NULL, NULL);
 479         if (len != 0) {
 480                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("halt error. response len: %x", len);
 481                 return 1;
 482         }
 483         return 0;
 484 }
 485
 486
 487 // Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),
 488 // plus evtl. 8 sectors with 16 blocks each (4k cards)
 489 uint8_t NumBlocksPerSector(uint8_t sectorNo) {
 490         return (sectorNo < 32) ? 4 : 16;
 491 }
 492
 493 uint8_t FirstBlockOfSector(uint8_t sectorNo) {
 494         if (sectorNo < 32)
 495                 return sectorNo * 4;
 496         else
 497                 return 32*4 + (sectorNo - 32) * 16;
 498
 499 }
 500
 501 // work with emulator memory
 502 void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
 503         emlSetMem_xt(data, blockNum, blocksCount, 16);
 504 }
 505
 506 void emlSetMem_xt(uint8_t *data, int blockNum, int blocksCount, int blockBtWidth) {
 507         uint8_t* emCARD = BigBuf_get_EM_addr();
 508         memcpy(emCARD + blockNum * blockBtWidth, data, blocksCount * blockBtWidth);
 509 }
 510
 511 void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {
 512         uint8_t* emCARD = BigBuf_get_EM_addr();
 513         memcpy(data, emCARD + blockNum * 16, blocksCount * 16);
 514 }
 515
 516 void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
 517         uint8_t* emCARD = BigBuf_get_EM_addr();
 518         memcpy(data, emCARD + bytePtr, byteCount);
 519 }
 520
 521 int emlCheckValBl(int blockNum) {
 522         uint8_t* emCARD = BigBuf_get_EM_addr();
 523         uint8_t* data = emCARD + blockNum * 16;
 524
 525         if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
 526                         (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||
 527                         (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||
 528                         (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||
 529                         (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||
 530                         (data[12] != (data[15] ^ 0xff))
 531                  )
 532                 return 1;
 533         return 0;
 534 }
 535
 536 int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
 537         uint8_t* emCARD = BigBuf_get_EM_addr();
 538         uint8_t* data = emCARD + blockNum * 16;
 539
 540         if (emlCheckValBl(blockNum))
 541                 return 1;
 542
 543         memcpy(blReg, data, 4);
 544         *blBlock = data[12];
 545         return 0;
 546 }
 547
 548 int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
 549         uint8_t* emCARD = BigBuf_get_EM_addr();
 550         uint8_t* data = emCARD + blockNum * 16;
 551
 552         memcpy(data + 0, &blReg, 4);
 553         memcpy(data + 8, &blReg, 4);
 554         blReg = blReg ^ 0xffffffff;
 555         memcpy(data + 4, &blReg, 4);
 556
 557         data[12] = blBlock;
 558         data[13] = blBlock ^ 0xff;
 559         data[14] = blBlock;
 560         data[15] = blBlock ^ 0xff;
 561
 562         return 0;
 563 }
 564
 565 uint64_t emlGetKey(int sectorNum, int keyType) {
 566         uint8_t key[6] = {0x00};
 567         uint8_t* emCARD = BigBuf_get_EM_addr();
 568
 569         memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
 570         return bytes_to_num(key, 6);
 571 }
 572
 573 void emlClearMem(void) {
 574         int b;
 575
 576         const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 577         const uint8_t uid[]   =   {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
 578         uint8_t* emCARD = BigBuf_get_EM_addr();
 579
 580         memset(emCARD, 0, CARD_MEMORY_SIZE);
 581
 582         // fill sectors trailer data
 583         for(b = 3; b < 256; b<127?(b+=4):(b+=16))
 584                 emlSetMem((uint8_t *)trailer, b , 1);
 585
 586         // uid
 587         emlSetMem((uint8_t *)uid, 0, 1);
 588         return;
 589 }
 590
 591
 592 // Mifare desfire commands
 593 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)
 594 {
 595     uint8_t dcmd[5] = {cmd, data[0], data[1], 0x00, 0x00};
 596         AppendCrc14443a(dcmd, 3);
 597
 598         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 599         int len = ReaderReceive(answer, answer_parity);
 600         if(!len) {
 601                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 602                         Dbprintf("Authentication failed. Card timeout.");
 603                 return 1;
 604     }
 605         return len;
 606 }
 607
 608 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)
 609 {
 610     uint8_t dcmd[20] = {0x00};
 611     dcmd[0] = cmd;
 612     memcpy(dcmd+1,data,17);
 613         AppendCrc14443a(dcmd, 18);
 614
 615         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 616         int len = ReaderReceive(answer, answer_parity);
 617         if(!len){
 618         if (MF_DBGLEVEL >= MF_DBG_ERROR)
 619                         Dbprintf("Authentication failed. Card timeout.");
 620                 return 1;
 621     }
 622         return len;
 623 }
 624
 625 int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){
 626
 627         int len;
 628         // load key, keynumber
 629         uint8_t data[2]={0x0a, 0x00};
 630         uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
 631         uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
 632
 633         len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);
 634         if (len == 1) {
 635                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 636                         Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 637                 return 1;
 638         }
 639
 640         if (len == 12) {
 641                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED)     {
 642                         Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 643                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 644                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 645                                 receivedAnswer[10],receivedAnswer[11]);
 646                         }
 647                         memcpy(blockData, receivedAnswer, 12);
 648                 return 0;
 649         }
 650         return 1;
 651 }
 652
 653 int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
 654
 655         int len;
 656         uint8_t data[17] = {0x00};
 657         data[0] = 0xAF;
 658         memcpy(data+1,key,16);
 659
 660         uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
 661         uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
 662
 663         len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);
 664
 665         if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {
 666                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 667                         Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);
 668                 return 1;
 669         }
 670
 671         if (len == 12){
 672                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 673                         Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 674                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 675                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 676                                 receivedAnswer[10],receivedAnswer[11]);
 677                         }
 678                 memcpy(blockData, receivedAnswer, 12);
 679                 return 0;
 680         }
 681         return 1;
 682 }