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