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 |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 0)) << 0;
  36                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 1)) << 1;
  37                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 2)) << 2;
  38                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 3)) << 3;
  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 }
  57
  58 uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {
  59         uint8_t bt = 0;
  60         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 0)) << 0;
  61         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 1)) << 1;
  62         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 2)) << 2;
  63         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 3)) << 3;
  64         return bt;
  65 }
  66
  67 // send X byte basic commands
  68 int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing) {
  69         uint8_t dcmd[data_size+3];
  70     dcmd[0] = cmd;
  71         memcpy(dcmd+1, data, data_size);
  72         AppendCrc14443a(dcmd, data_size+1);
  73         ReaderTransmit(dcmd, sizeof(dcmd), timing);
  74         int len = ReaderReceive(answer, answer_parity);
  75         if(!len) {
  76                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
  77                         Dbprintf("%02X Cmd failed. Card timeout.", cmd);
  78                 len = ReaderReceive(answer,answer_parity);
  79     }
  80         return len;
  81 }
  82
  83 // send 2 byte commands
  84 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) {
  85         uint16_t pos, res;
  86         uint8_t dcmd[4] = {cmd, data, 0x00, 0x00};
  87         uint8_t ecmd[4] = {0x00, 0x00, 0x00, 0x00};
  88         uint8_t par[1] = {0x00};                        // 1 Byte parity is enough here
  89         AppendCrc14443a(dcmd, 2);
  90         memcpy(ecmd, dcmd, sizeof(dcmd));
  91
  92         if (crypted) {
  93                 par[0] = 0;
  94                 for (pos = 0; pos < 4; pos++) {
  95                         ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];
  96                         par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos));
  97                 }
  98                 ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);
  99         } else {
 100                 ReaderTransmit(dcmd, sizeof(dcmd), timing);
 101         }
 102
 103         int len = ReaderReceive(answer, par);
 104
 105         if (answer_parity) *answer_parity = par[0];
 106
 107         if (crypted == CRYPT_ALL) {
 108                 if (len == 1) {
 109                         res = 0;
 110                         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 0)) << 0;
 111                         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 1)) << 1;
 112                         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 2)) << 2;
 113                         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 3)) << 3;
 114                         answer[0] = res;
 115                 } else {
 116                         for (pos = 0; pos < len; pos++)
 117                                 answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];
 118                 }
 119         }
 120         return len;
 121 }
 122
 123 // mifare classic commands
 124 int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested) {
 125         return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);
 126 }
 127
 128 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) {
 129         int len;
 130         uint32_t pos;
 131         uint8_t par[1] = {0x00};
 132
 133         // "random" reader nonce:
 134         //byte_t nr[4] = {0x55, 0x41, 0x49, 0x92};
 135         byte_t nr[4] = {0x01, 0x01, 0x01, 0x01};
 136
 137         uint32_t nt, ntpp; // Supplied tag nonce
 138
 139         uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
 140         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 141         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 142
 143         // Transmit MIFARE_CLASSIC_AUTH
 144         len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);
 145         if (MF_DBGLEVEL >= 4)   Dbprintf("rand tag nonce len: %x", len);
 146         if (len != 4) return 1;
 147
 148         // Save the tag nonce (nt)
 149         nt = bytes_to_num(receivedAnswer, 4);
 150
 151         //  ----------------------------- crypto1 create
 152         if (isNested)
 153                 crypto1_destroy(pcs);
 154
 155         // Init cipher with key
 156         crypto1_create(pcs, ui64Key);
 157
 158         if (isNested == AUTH_NESTED) {
 159                 // decrypt nt with help of new key
 160                 nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;
 161         } else {
 162                 // Load (plain) uid^nt into the cipher
 163                 crypto1_word(pcs, nt ^ uid, 0);
 164         }
 165
 166         // some statistic
 167         if (!ntptr && (MF_DBGLEVEL >= 3))
 168                 Dbprintf("auth uid: %08x nt: %08x", uid, nt);
 169
 170         // save Nt
 171         if (ntptr)
 172                 *ntptr = nt;
 173
 174         // Generate (encrypted) nr+parity by loading it into the cipher (Nr)
 175         par[0] = 0;
 176         for (pos = 0; pos < 4; pos++) {
 177                 mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];
 178                 par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));
 179         }
 180
 181         // Skip 32 bits in pseudo random generator
 182         nt = prng_successor(nt, 32);
 183
 184         //  ar+parity
 185         for (pos = 4; pos < 8; pos++) {
 186                 nt = prng_successor(nt,8);
 187                 mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);
 188                 par[0] |= (((filter(pcs->odd) ^ oddparity8(nt & 0xff)) & 0x01) << (7-pos));
 189         }
 190
 191         // Transmit reader nonce and reader answer
 192         ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);
 193
 194         // Receive 4 byte tag answer
 195         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 196         if (!len) {
 197                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Card timeout.");
 198                 return 2;
 199         }
 200
 201         ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);
 202
 203         if (ntpp != bytes_to_num(receivedAnswer, 4)) {
 204                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Error card response.");
 205                 return 3;
 206         }
 207         return 0;
 208 }
 209
 210 int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) {
 211
 212         int len;
 213         uint8_t bt[2] = {0x00, 0x00};
 214         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 215         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 216
 217         len = mifare_sendcmd_short(pcs, 1, ISO14443A_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 218         if (len == 1) {
 219                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 220                 return 1;
 221         }
 222         if (len != 18) {
 223                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: card timeout. len: %x", len);
 224                 return 2;
 225         }
 226
 227         memcpy(bt, receivedAnswer + 16, 2);
 228         AppendCrc14443a(receivedAnswer, 16);
 229         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 230                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd CRC response error.");
 231                 return 3;
 232         }
 233
 234         memcpy(blockData, receivedAnswer, 16);
 235         return 0;
 236 }
 237
 238 // mifare ultralight commands
 239 int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){
 240
 241         uint16_t len = 0;
 242         uint8_t resp[4] = {0x00, 0x00, 0x00, 0x00};
 243         uint8_t respPar[1] = {0x00};
 244         uint8_t key[4] = {0x00, 0x00, 0x00, 0x00};
 245         memcpy(key, keybytes, 4);
 246
 247         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 248                 Dbprintf("EV1 Auth : %02x%02x%02x%02x", key[0], key[1], key[2], key[3]);
 249
 250         len = mifare_sendcmd(0x1B, key, sizeof(key), resp, respPar, NULL);
 251
 252         if (len != 4) {
 253                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);
 254                 return 0;
 255         }
 256
 257         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 258                 Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);
 259
 260         memcpy(pack, resp, 4);
 261         return 1;
 262 }
 263
 264 int mifare_ultra_auth(uint8_t *keybytes){
 265
 266         /// 3des2k
 267         uint8_t random_a[8] = {1,1,1,1,1,1,1,1};
 268         uint8_t random_b[8] = {0x00};
 269         uint8_t enc_random_b[8] = {0x00};
 270         uint8_t rnd_ab[16] = {0x00};
 271         uint8_t IV[8] = {0x00};
 272         uint8_t key[16] = {0x00};
 273         memcpy(key, keybytes, 16);
 274
 275         uint16_t len = 0;
 276         uint8_t resp[19] = {0x00};
 277         uint8_t respPar[3] = {0,0,0};
 278
 279         // REQUEST AUTHENTICATION
 280         len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, resp, respPar ,NULL);
 281         if (len != 11) {
 282                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 283                 return 0;
 284         }
 285
 286         // tag nonce.
 287         memcpy(enc_random_b,resp+1,8);
 288
 289         // decrypt nonce.
 290         tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );
 291         rol(random_b,8);
 292         memcpy(rnd_ab  ,random_a,8);
 293         memcpy(rnd_ab+8,random_b,8);
 294
 295         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 296                 Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",
 297                         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]);
 298
 299                 Dbprintf("    B: %02x %02x %02x %02x %02x %02x %02x %02x",
 300                         random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);
 301
 302                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 303                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 304
 305                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 306                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );
 307         }
 308
 309         // encrypt    out, in, length, key, iv
 310         tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
 311
 312         len = mifare_sendcmd(0xAF, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL);
 313         if (len != 11) {
 314                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 315                 return 0;
 316         }
 317
 318         uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };
 319         uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };
 320         memcpy(enc_resp, resp+1, 8);
 321
 322         // decrypt    out, in, length, key, iv
 323         tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
 324         if ( memcmp(resp_random_a, random_a, 8) != 0 ) {
 325                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");
 326                 return 0;
 327         }
 328
 329         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 330                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 331                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],
 332                                 rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 333
 334                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 335                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],
 336                                 rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);
 337
 338                 Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",
 339                                 random_a[0],random_a[1],random_a[2],random_a[3],
 340                                 random_a[4],random_a[5],random_a[6],random_a[7]);
 341
 342                 Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",
 343                                 resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],
 344                                 resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);
 345         }
 346         return 1;
 347 }
 348
 349 int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData) {
 350         uint16_t len = 0;
 351         uint8_t bt[2] = {0x00, 0x00};
 352         uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
 353         uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
 354
 355         len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 356         if (len == 1) {
 357                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 358                 return 1;
 359         }
 360         if (len != 18) {
 361                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);
 362                 return 2;
 363         }
 364
 365         memcpy(bt, receivedAnswer + 16, 2);
 366         AppendCrc14443a(receivedAnswer, 16);
 367         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 368                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");
 369                 return 3;
 370         }
 371
 372         memcpy(blockData, receivedAnswer, 14);
 373         return 0;
 374 }
 375
 376 int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) {
 377         // variables
 378         uint16_t len = 0;
 379         uint32_t pos = 0;
 380         uint8_t par[3] = {0x00, 0x00, 0x00}; // enough for 18 Bytes to send
 381         byte_t res = 0;
 382
 383         uint8_t d_block[18], d_block_enc[18];
 384         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 385         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 386
 387         // command MIFARE_CLASSIC_WRITEBLOCK
 388         len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 389
 390         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 391                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 392                 return 1;
 393         }
 394
 395         memcpy(d_block, blockData, 16);
 396         AppendCrc14443a(d_block, 16);
 397
 398         // crypto
 399         for (pos = 0; pos < 18; pos++) {
 400                 d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
 401                 par[pos>>3] |= (((filter(pcs->odd) ^ oddparity8(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));
 402         }
 403
 404         ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
 405
 406         // Receive the response
 407         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 408
 409         res = 0;
 410         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 0)) << 0;
 411         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 1)) << 1;
 412         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 2)) << 2;
 413         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 3)) << 3;
 414
 415         if ((len != 1) || (res != 0x0A)) {
 416                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd send data2 Error: %02x", res);
 417                 return 2;
 418         }
 419         return 0;
 420 }
 421
 422 /* // command not needed, but left for future testing
 423 int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData) {
 424         uint16_t len;
 425     uint8_t par[3] = {0};  // enough for 18 parity bits
 426         uint8_t d_block[18] = {0x00};
 427         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 428         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 429
 430     len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 431
 432     if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 433                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 434                         Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
 435         return 1;
 436     }
 437
 438         memcpy(d_block, blockData, 16);
 439     AppendCrc14443a(d_block, 16);
 440
 441         ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
 442
 443         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 444
 445         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 446                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 447                         Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
 448         return 2;
 449         }
 450     return 0;
 451 }
 452 */
 453
 454 int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData) {
 455     uint16_t len = 0;
 456         uint8_t block[5] = {blockNo, 0x00, 0x00, 0x00, 0x00 };
 457         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 458         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 459
 460     // command MIFARE_CLASSIC_WRITEBLOCK
 461         memcpy(block+1, blockData, 4);
 462
 463         len = mifare_sendcmd( MIFARE_ULC_WRITE, block, sizeof(block), receivedAnswer, receivedAnswerPar, NULL);
 464
 465     if (receivedAnswer[0] != 0x0A) {   //  0x0a - ACK
 466                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 467                         Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
 468         return 1;
 469     }
 470     return 0;
 471 }
 472 int mifare_classic_halt_ex(struct Crypto1State *pcs) {
 473         uint16_t len = 0;
 474         uint8_t receivedAnswer[4] = {0x00, 0x00, 0x00, 0x00};
 475         len = mifare_sendcmd_short(pcs, (pcs == NULL) ? CRYPT_NONE : CRYPT_ALL, 0x50, 0x00, receivedAnswer, NULL, NULL);
 476         if (len != 0) {
 477                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("halt error. response len: %x", len);
 478                 return 1;
 479         }
 480         return 0;
 481 }
 482 int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) {
 483         return mifare_classic_halt_ex(pcs);
 484 }
 485
 486 int mifare_ultra_halt() {
 487         uint16_t len = 0;
 488         uint8_t receivedAnswer[4] = {0x00, 0x00, 0x00, 0x00};
 489         len = mifare_sendcmd_short(NULL, CRYPT_NONE, 0x50, 0x00, receivedAnswer, NULL, NULL);
 490         if (len != 0) {
 491                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("halt error. response len: %x", len);
 492                 return 1;
 493         }
 494         return 0;
 495 }
 496
 497
 498 // Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),
 499 // plus evtl. 8 sectors with 16 blocks each (4k cards)
 500 uint8_t NumBlocksPerSector(uint8_t sectorNo) {
 501         return (sectorNo < 32) ? 4 : 16;
 502 }
 503
 504 uint8_t FirstBlockOfSector(uint8_t sectorNo) {
 505         if (sectorNo < 32)
 506                 return sectorNo * 4;
 507         else
 508                 return 32*4 + (sectorNo - 32) * 16;
 509
 510 }
 511
 512 // work with emulator memory
 513 void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
 514         emlSetMem_xt(data, blockNum, blocksCount, 16);
 515 }
 516
 517 void emlSetMem_xt(uint8_t *data, int blockNum, int blocksCount, int blockBtWidth) {
 518         uint8_t* emCARD = BigBuf_get_EM_addr();
 519         memcpy(emCARD + blockNum * blockBtWidth, data, blocksCount * blockBtWidth);
 520 }
 521
 522 void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {
 523         uint8_t* emCARD = BigBuf_get_EM_addr();
 524         memcpy(data, emCARD + blockNum * 16, blocksCount * 16);
 525 }
 526
 527 void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
 528         uint8_t* emCARD = BigBuf_get_EM_addr();
 529         memcpy(data, emCARD + bytePtr, byteCount);
 530 }
 531
 532 int emlCheckValBl(int blockNum) {
 533         uint8_t* emCARD = BigBuf_get_EM_addr();
 534         uint8_t* data = emCARD + blockNum * 16;
 535
 536         if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
 537                         (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||
 538                         (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||
 539                         (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||
 540                         (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||
 541                         (data[12] != (data[15] ^ 0xff))
 542                  )
 543                 return 1;
 544         return 0;
 545 }
 546
 547 int emlGetValBl(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         if (emlCheckValBl(blockNum))
 552                 return 1;
 553
 554         memcpy(blReg, data, 4);
 555         *blBlock = data[12];
 556         return 0;
 557 }
 558
 559 int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
 560         uint8_t* emCARD = BigBuf_get_EM_addr();
 561         uint8_t* data = emCARD + blockNum * 16;
 562
 563         memcpy(data + 0, &blReg, 4);
 564         memcpy(data + 8, &blReg, 4);
 565         blReg = blReg ^ 0xffffffff;
 566         memcpy(data + 4, &blReg, 4);
 567
 568         data[12] = blBlock;
 569         data[13] = blBlock ^ 0xff;
 570         data[14] = blBlock;
 571         data[15] = blBlock ^ 0xff;
 572
 573         return 0;
 574 }
 575
 576 uint64_t emlGetKey(int sectorNum, int keyType) {
 577         uint8_t key[6] = {0x00};
 578         uint8_t* emCARD = BigBuf_get_EM_addr();
 579
 580         memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
 581         return bytes_to_num(key, 6);
 582 }
 583
 584 void emlClearMem(void) {
 585         int b;
 586
 587         const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 588         const uint8_t uid[]   =   {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
 589         uint8_t* emCARD = BigBuf_get_EM_addr();
 590
 591         memset(emCARD, 0, CARD_MEMORY_SIZE);
 592
 593         // fill sectors trailer data
 594         for(b = 3; b < 256; b<127?(b+=4):(b+=16))
 595                 emlSetMem((uint8_t *)trailer, b , 1);
 596
 597         // uid
 598         emlSetMem((uint8_t *)uid, 0, 1);
 599         return;
 600 }
 601
 602
 603 // Mifare desfire commands
 604 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)
 605 {
 606     uint8_t dcmd[5] = {cmd, data[0], data[1], 0x00, 0x00};
 607         AppendCrc14443a(dcmd, 3);
 608
 609         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 610         int len = ReaderReceive(answer, answer_parity);
 611         if(!len) {
 612                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 613                         Dbprintf("Authentication failed. Card timeout.");
 614                 return 1;
 615     }
 616         return len;
 617 }
 618
 619 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)
 620 {
 621     uint8_t dcmd[20] = {0x00};
 622     dcmd[0] = cmd;
 623     memcpy(dcmd+1,data,17);
 624         AppendCrc14443a(dcmd, 18);
 625
 626         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 627         int len = ReaderReceive(answer, answer_parity);
 628         if(!len){
 629         if (MF_DBGLEVEL >= MF_DBG_ERROR)
 630                         Dbprintf("Authentication failed. Card timeout.");
 631                 return 1;
 632     }
 633         return len;
 634 }
 635
 636 int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){
 637
 638         int len;
 639         // load key, keynumber
 640         uint8_t data[2]={0x0a, 0x00};
 641         uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
 642         uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
 643
 644         len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);
 645         if (len == 1) {
 646                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 647                         Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 648                 return 1;
 649         }
 650
 651         if (len == 12) {
 652                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED)     {
 653                         Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 654                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 655                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 656                                 receivedAnswer[10],receivedAnswer[11]);
 657                         }
 658                         memcpy(blockData, receivedAnswer, 12);
 659                 return 0;
 660         }
 661         return 1;
 662 }
 663
 664 int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
 665
 666         int len;
 667         uint8_t data[17] = {0x00};
 668         data[0] = 0xAF;
 669         memcpy(data+1,key,16);
 670
 671         uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
 672         uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
 673
 674         len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);
 675
 676         if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {
 677                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 678                         Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);
 679                 return 1;
 680         }
 681
 682         if (len == 12){
 683                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 684                         Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 685                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 686                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 687                                 receivedAnswer[10],receivedAnswer[11]);
 688                         }
 689                 memcpy(blockData, receivedAnswer, 12);
 690                 return 0;
 691         }
 692         return 1;
 693 }