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
  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 "des.h"
  22
  23 int MF_DBGLEVEL = MF_DBG_ALL;
  24
  25 // crypto1 helpers
  26 void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){
  27         uint8_t bt = 0;
  28         int i;
  29
  30         if (len != 1) {
  31                 for (i = 0; i < len; i++)
  32                         data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
  33         } else {
  34                 bt = 0;
  35                 for (i = 0; i < 4; i++)
  36                         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], i)) << i;
  37
  38                 data[0] = bt;
  39         }
  40         return;
  41 }
  42
  43 void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {
  44         uint8_t bt = 0;
  45         int i;
  46         par[0] = 0;
  47
  48         for (i = 0; i < len; i++) {
  49                 bt = data[i];
  50                 data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
  51                 if((i&0x0007) == 0)
  52                         par[i>>3] = 0;
  53                 par[i>>3] |= (((filter(pcs->odd) ^ oddparity(bt)) & 0x01)<<(7-(i&0x0007)));
  54         }
  55         return;
  56 }
  57
  58 uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {
  59         uint8_t bt = 0;
  60         int i;
  61
  62         for (i = 0; i < 4; i++)
  63                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, i)) << i;
  64
  65         return bt;
  66 }
  67
  68 // send 2 byte commands
  69 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)
  70 {
  71         return mifare_sendcmd_shortex(pcs, crypted, cmd, data, answer, answer_parity, timing);
  72 }
  73
  74 // send X byte basic commands
  75 int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)
  76 {
  77         uint8_t dcmd[data_size+3];
  78     dcmd[0] = cmd;
  79         memcpy(dcmd+1,data,data_size);
  80         AppendCrc14443a(dcmd, data_size+1);
  81         ReaderTransmit(dcmd, sizeof(dcmd), timing);
  82         int len = ReaderReceive(answer, answer_parity);
  83         if(!len) {
  84                 if (MF_DBGLEVEL >= MF_DBG_ERROR)   Dbprintf("%02X Cmd failed. Card timeout.", cmd);
  85                         len = ReaderReceive(answer,answer_parity);
  86                 //return 0;
  87     }
  88         return len;
  89 }
  90
  91 /*
  92 int mifare_sendcmd_short_mfucauth(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t *data, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing)
  93 {
  94     uint8_t dcmd[19];
  95         int len;
  96     dcmd[0] = cmd;
  97     memcpy(dcmd+1,data,16);
  98         AppendCrc14443a(dcmd, 17);
  99
 100         ReaderTransmit(dcmd, sizeof(dcmd), timing);
 101         len = ReaderReceive(answer, answer_parity);
 102         if(!len) {
 103         if (MF_DBGLEVEL >= MF_DBG_ERROR)   Dbprintf("Authentication failed. Card timeout.");
 104         len = ReaderReceive(answer,answer_parity);
 105     }
 106     if(len==1)  {
 107                 if (MF_DBGLEVEL >= MF_DBG_ERROR)   Dbprintf("NAK - Authentication failed.");
 108                 return 1;
 109         }
 110         return len;
 111 }
 112
 113 int mifare_sendcmd_short_mfuev1auth(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t *data, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing)
 114 {
 115     uint8_t dcmd[7];
 116         int len;
 117     dcmd[0] = cmd;
 118     memcpy(dcmd+1,data,4);
 119         AppendCrc14443a(dcmd, 5);
 120
 121         ReaderTransmit(dcmd, sizeof(dcmd), timing);
 122         len = ReaderReceive(answer, answer_parity);
 123         if(!len) {
 124         if (MF_DBGLEVEL >= MF_DBG_ERROR)   Dbprintf("Authentication failed. Card timeout.");
 125         len = ReaderReceive(answer,answer_parity);
 126     }
 127     if(len==1)  {
 128                 if (MF_DBGLEVEL >= MF_DBG_ERROR)   Dbprintf("NAK - Authentication failed.");
 129                 return 1;
 130         }
 131         return len;
 132 }
 133 */
 134
 135 // send 2 byte commands
 136 int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing)
 137 {
 138         uint8_t dcmd[4], ecmd[4];
 139         uint16_t pos, res;
 140         uint8_t par[1];                 // 1 Byte parity is enough here
 141         dcmd[0] = cmd;
 142         dcmd[1] = data;
 143         AppendCrc14443a(dcmd, 2);
 144
 145         memcpy(ecmd, dcmd, sizeof(dcmd));
 146
 147         if (crypted) {
 148                 par[0] = 0;
 149                 for (pos = 0; pos < 4; pos++)
 150                 {
 151                         ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];
 152                         par[0] |= (((filter(pcs->odd) ^ oddparity(dcmd[pos])) & 0x01) << (7-pos));
 153                 }
 154
 155                 ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);
 156
 157         } else {
 158                 ReaderTransmit(dcmd, sizeof(dcmd), timing);
 159         }
 160
 161         int len = ReaderReceive(answer, par);
 162
 163         if (answer_parity) *answer_parity = par[0];
 164
 165         if (crypted == CRYPT_ALL) {
 166                 if (len == 1) {
 167                         res = 0;
 168                         for (pos = 0; pos < 4; pos++)
 169                                 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], pos)) << pos;
 170
 171                         answer[0] = res;
 172
 173                 } else {
 174                         for (pos = 0; pos < len; pos++)
 175                         {
 176                                 answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];
 177                         }
 178                 }
 179         }
 180
 181         return len;
 182 }
 183
 184 // mifare classic commands
 185 int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested)
 186 {
 187         return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);
 188 }
 189
 190 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)
 191 {
 192         // variables
 193         int len;
 194         uint32_t pos;
 195         uint8_t tmp4[4];
 196         uint8_t par[1] = {0x00};
 197         byte_t nr[4];
 198         uint32_t nt, ntpp; // Supplied tag nonce
 199
 200         uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
 201         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 202         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 203
 204         // Transmit MIFARE_CLASSIC_AUTH
 205         len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);
 206         if (MF_DBGLEVEL >= 4)   Dbprintf("rand tag nonce len: %x", len);
 207         if (len != 4) return 1;
 208
 209         // "random" reader nonce:
 210         nr[0] = 0x55;
 211         nr[1] = 0x41;
 212         nr[2] = 0x49;
 213         nr[3] = 0x92;
 214
 215         // Save the tag nonce (nt)
 216         nt = bytes_to_num(receivedAnswer, 4);
 217
 218         //  ----------------------------- crypto1 create
 219         if (isNested)
 220                 crypto1_destroy(pcs);
 221
 222         // Init cipher with key
 223         crypto1_create(pcs, ui64Key);
 224
 225         if (isNested == AUTH_NESTED) {
 226                 // decrypt nt with help of new key
 227                 nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;
 228         } else {
 229                 // Load (plain) uid^nt into the cipher
 230                 crypto1_word(pcs, nt ^ uid, 0);
 231         }
 232
 233         // some statistic
 234         if (!ntptr && (MF_DBGLEVEL >= 3))
 235                 Dbprintf("auth uid: %08x nt: %08x", uid, nt);
 236
 237         // save Nt
 238         if (ntptr)
 239                 *ntptr = nt;
 240
 241         // Generate (encrypted) nr+parity by loading it into the cipher (Nr)
 242         par[0] = 0;
 243         for (pos = 0; pos < 4; pos++)
 244         {
 245                 mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];
 246                 par[0] |= (((filter(pcs->odd) ^ oddparity(nr[pos])) & 0x01) << (7-pos));
 247         }
 248
 249         // Skip 32 bits in pseudo random generator
 250         nt = prng_successor(nt,32);
 251
 252         //  ar+parity
 253         for (pos = 4; pos < 8; pos++)
 254         {
 255                 nt = prng_successor(nt,8);
 256                 mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);
 257                 par[0] |= (((filter(pcs->odd) ^ oddparity(nt & 0xff)) & 0x01) << (7-pos));
 258         }
 259
 260         // Transmit reader nonce and reader answer
 261         ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);
 262
 263         // Receive 4 byte tag answer
 264         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 265         if (!len)
 266         {
 267                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Card timeout.");
 268                 return 2;
 269         }
 270
 271         memcpy(tmp4, receivedAnswer, 4);
 272         ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);
 273
 274         if (ntpp != bytes_to_num(tmp4, 4)) {
 275                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Error card response.");
 276                 return 3;
 277         }
 278
 279         return 0;
 280 }
 281
 282 int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
 283 {
 284         // variables
 285         int len;
 286         uint8_t bt[2];
 287
 288         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 289         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 290
 291         // command MIFARE_CLASSIC_READBLOCK
 292         len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 293         if (len == 1) {
 294                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 295                 return 1;
 296         }
 297         if (len != 18) {
 298                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: card timeout. len: %x", len);
 299                 return 2;
 300         }
 301
 302         memcpy(bt, receivedAnswer + 16, 2);
 303         AppendCrc14443a(receivedAnswer, 16);
 304         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 305                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd CRC response error.");
 306                 return 3;
 307         }
 308
 309         memcpy(blockData, receivedAnswer, 16);
 310         return 0;
 311 }
 312
 313 // mifare ultralight commands
 314 int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){
 315
 316         uint16_t len;
 317         uint8_t resp[4];
 318         uint8_t respPar[1];
 319         uint8_t key[4] = {0x00};
 320         memcpy(key, keybytes, 4);
 321
 322         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 323                 Dbprintf("EV1 Auth : %02x%02x%02x%02x", key[0], key[1], key[2], key[3]);
 324
 325         len = mifare_sendcmd(0x1B, key, sizeof(key), resp, respPar, NULL);
 326         //len = mifare_sendcmd_short_mfuev1auth(NULL, 0, 0x1B, key, resp, respPar, NULL);
 327         if (len != 4) {
 328                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);
 329                 return 0;
 330         }
 331
 332         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 333                 Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);
 334
 335         memcpy(pack, resp, 4);
 336         return 1;
 337 }
 338
 339 int mifare_ultra_auth(uint8_t *keybytes){
 340
 341         /// 3des2k
 342
 343         uint8_t random_a[8] = {1,1,1,1,1,1,1,1};
 344         uint8_t random_b[8] = {0x00};
 345         uint8_t enc_random_b[8] = {0x00};
 346         uint8_t rnd_ab[16] = {0x00};
 347         uint8_t IV[8] = {0x00};
 348         uint8_t key[16] = {0x00};
 349         memcpy(key, keybytes, 16);
 350
 351         uint16_t len;
 352         uint8_t resp[19] = {0x00};
 353         uint8_t respPar[3] = {0,0,0};
 354
 355         // REQUEST AUTHENTICATION
 356         len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, resp, respPar ,NULL);
 357         if (len != 11) {
 358                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 359                 return 0;
 360         }
 361
 362         // tag nonce.
 363         memcpy(enc_random_b,resp+1,8);
 364
 365         // decrypt nonce.
 366         tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );
 367         rol(random_b,8);
 368         memcpy(rnd_ab  ,random_a,8);
 369         memcpy(rnd_ab+8,random_b,8);
 370
 371         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 372                 Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",
 373                         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]);
 374
 375                 Dbprintf("    B: %02x %02x %02x %02x %02x %02x %02x %02x",
 376                         random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);
 377
 378                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 379                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 380
 381                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 382                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );
 383         }
 384
 385         // encrypt    out, in, length, key, iv
 386         tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
 387         //len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, resp, respPar, NULL);
 388         len = mifare_sendcmd(0xAF, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL);
 389         if (len != 11) {
 390                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 391                 return 0;
 392         }
 393
 394         uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };
 395         uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };
 396         memcpy(enc_resp, resp+1, 8);
 397
 398         // decrypt    out, in, length, key, iv
 399         tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
 400         if ( memcmp(resp_random_a, random_a, 8) != 0 ) {
 401                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");
 402                 return 0;
 403         }
 404
 405         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 406                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 407                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],
 408                                 rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 409
 410                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 411                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],
 412                                 rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);
 413
 414                 Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",
 415                                 random_a[0],random_a[1],random_a[2],random_a[3],
 416                                 random_a[4],random_a[5],random_a[6],random_a[7]);
 417
 418                 Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",
 419                                 resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],
 420                                 resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);
 421         }
 422         return 1;
 423 }
 424
 425 int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData)
 426 {
 427         uint16_t len;
 428         uint8_t bt[2];
 429         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 430         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 431
 432
 433         len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 434         if (len == 1) {
 435                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 436                 return 1;
 437         }
 438         if (len != 18) {
 439                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);
 440                 return 2;
 441         }
 442
 443         memcpy(bt, receivedAnswer + 16, 2);
 444         AppendCrc14443a(receivedAnswer, 16);
 445         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 446                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");
 447                 return 3;
 448         }
 449
 450         memcpy(blockData, receivedAnswer, 14);
 451         return 0;
 452 }
 453
 454 int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
 455 {
 456         // variables
 457         uint16_t len, i;
 458         uint32_t pos = 0;
 459         uint8_t par[3] = {0x00};                // enough for 18 Bytes to send
 460         byte_t res = 0;
 461
 462         uint8_t d_block[18], d_block_enc[18];
 463         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 464         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 465
 466         // command MIFARE_CLASSIC_WRITEBLOCK
 467         len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 468
 469         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 470                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 471                 return 1;
 472         }
 473
 474         memcpy(d_block, blockData, 16);
 475         AppendCrc14443a(d_block, 16);
 476
 477         // crypto
 478         for (pos = 0; pos < 18; pos++)
 479         {
 480                 d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
 481                 par[pos>>3] |= (((filter(pcs->odd) ^ oddparity(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));
 482         }
 483
 484         ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
 485
 486         // Receive the response
 487         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 488
 489         res = 0;
 490         for (i = 0; i < 4; i++)
 491                 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;
 492
 493         if ((len != 1) || (res != 0x0A)) {
 494                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd send data2 Error: %02x", res);
 495                 return 2;
 496         }
 497
 498         return 0;
 499 }
 500
 501 /* // command not needed, but left for future testing
 502 int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData)
 503 {
 504         uint16_t len;
 505     uint8_t par[3] = {0};  // enough for 18 parity bits
 506         uint8_t d_block[18] = {0x00};
 507         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 508         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 509
 510     len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 511
 512     if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 513                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 514                         Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
 515         return 1;
 516     }
 517
 518         memcpy(d_block, blockData, 16);
 519     AppendCrc14443a(d_block, 16);
 520
 521         ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
 522
 523         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 524
 525         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 526                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 527                         Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
 528         return 2;
 529         }
 530     return 0;
 531 }
 532 */
 533
 534 int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData)
 535 {
 536     uint16_t len;
 537         uint8_t d_block[5] = {0x00};
 538         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 539         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 540
 541     // command MIFARE_CLASSIC_WRITEBLOCK
 542         d_block[0]= blockNo;
 543         memcpy(d_block+1,blockData,4);
 544         //AppendCrc14443a(d_block, 6);
 545
 546         len = mifare_sendcmd(0xA2, d_block, sizeof(d_block), receivedAnswer, receivedAnswerPar, NULL);
 547
 548     if (receivedAnswer[0] != 0x0A) {   //  0x0a - ACK
 549                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 550                         Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
 551         return 1;
 552     }
 553     return 0;
 554 }
 555
 556 int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)
 557 {
 558         uint16_t len;
 559         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 560         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 561
 562         len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 563         if (len != 0) {
 564                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 565                         Dbprintf("halt error. response len: %x", len);
 566                 return 1;
 567         }
 568
 569         return 0;
 570 }
 571
 572 int mifare_ultra_halt()
 573 {
 574         uint16_t len;
 575         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 576         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 577
 578         len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 579         if (len != 0) {
 580                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 581                         Dbprintf("halt error. response len: %x", len);
 582                 return 1;
 583         }
 584         return 0;
 585 }
 586
 587
 588 // Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),
 589 // plus evtl. 8 sectors with 16 blocks each (4k cards)
 590 uint8_t NumBlocksPerSector(uint8_t sectorNo)
 591 {
 592         if (sectorNo < 32)
 593                 return 4;
 594         else
 595                 return 16;
 596 }
 597
 598 uint8_t FirstBlockOfSector(uint8_t sectorNo)
 599 {
 600         if (sectorNo < 32)
 601                 return sectorNo * 4;
 602         else
 603                 return 32*4 + (sectorNo - 32) * 16;
 604
 605 }
 606
 607
 608 // work with emulator memory
 609 void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
 610         uint8_t* emCARD = BigBuf_get_EM_addr();
 611         memcpy(emCARD + blockNum * 16, data, blocksCount * 16);
 612 }
 613
 614 void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {
 615         uint8_t* emCARD = BigBuf_get_EM_addr();
 616         memcpy(data, emCARD + blockNum * 16, blocksCount * 16);
 617 }
 618
 619 void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
 620         uint8_t* emCARD = BigBuf_get_EM_addr();
 621         memcpy(data, emCARD + bytePtr, byteCount);
 622 }
 623
 624 int emlCheckValBl(int blockNum) {
 625         uint8_t* emCARD = BigBuf_get_EM_addr();
 626         uint8_t* data = emCARD + blockNum * 16;
 627
 628         if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
 629                         (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||
 630                         (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||
 631                         (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||
 632                         (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||
 633                         (data[12] != (data[15] ^ 0xff))
 634                  )
 635                 return 1;
 636         return 0;
 637 }
 638
 639 int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
 640         uint8_t* emCARD = BigBuf_get_EM_addr();
 641         uint8_t* data = emCARD + blockNum * 16;
 642
 643         if (emlCheckValBl(blockNum)) {
 644                 return 1;
 645         }
 646
 647         memcpy(blReg, data, 4);
 648         *blBlock = data[12];
 649         return 0;
 650 }
 651
 652 int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
 653         uint8_t* emCARD = BigBuf_get_EM_addr();
 654         uint8_t* data = emCARD + blockNum * 16;
 655
 656         memcpy(data + 0, &blReg, 4);
 657         memcpy(data + 8, &blReg, 4);
 658         blReg = blReg ^ 0xffffffff;
 659         memcpy(data + 4, &blReg, 4);
 660
 661         data[12] = blBlock;
 662         data[13] = blBlock ^ 0xff;
 663         data[14] = blBlock;
 664         data[15] = blBlock ^ 0xff;
 665
 666         return 0;
 667 }
 668
 669 uint64_t emlGetKey(int sectorNum, int keyType) {
 670         uint8_t key[6];
 671         uint8_t* emCARD = BigBuf_get_EM_addr();
 672
 673         memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
 674         return bytes_to_num(key, 6);
 675 }
 676
 677 void emlClearMem(void) {
 678         int b;
 679
 680         const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 681         const uint8_t uid[]   =   {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
 682         uint8_t* emCARD = BigBuf_get_EM_addr();
 683
 684         memset(emCARD, 0, CARD_MEMORY_SIZE);
 685
 686         // fill sectors trailer data
 687         for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {
 688                 emlSetMem((uint8_t *)trailer, b , 1);
 689         }
 690
 691         // uid
 692         emlSetMem((uint8_t *)uid, 0, 1);
 693         return;
 694 }
 695
 696
 697 // Mifare desfire commands
 698 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)
 699 {
 700     uint8_t dcmd[5] = {0x00};
 701     dcmd[0] = cmd;
 702     memcpy(dcmd+1,data,2);
 703         AppendCrc14443a(dcmd, 3);
 704
 705         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 706         int len = ReaderReceive(answer, answer_parity);
 707         if(!len) {
 708                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 709                         Dbprintf("Authentication failed. Card timeout.");
 710                 return 1;
 711     }
 712         return len;
 713 }
 714
 715 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)
 716 {
 717     uint8_t dcmd[20] = {0x00};
 718     dcmd[0] = cmd;
 719     memcpy(dcmd+1,data,17);
 720         AppendCrc14443a(dcmd, 18);
 721
 722         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 723         int len = ReaderReceive(answer, answer_parity);
 724         if(!len){
 725         if (MF_DBGLEVEL >= MF_DBG_ERROR)
 726                         Dbprintf("Authentication failed. Card timeout.");
 727                 return 1;
 728     }
 729         return len;
 730 }
 731
 732 int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){
 733
 734         int len;
 735         // load key, keynumber
 736         uint8_t data[2]={0x0a, 0x00};
 737         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 738         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 739
 740         len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);
 741         if (len == 1) {
 742                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 743                         Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 744                 return 1;
 745         }
 746
 747         if (len == 12) {
 748                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED)     {
 749                         Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 750                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 751                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 752                                 receivedAnswer[10],receivedAnswer[11]);
 753                         }
 754                         memcpy(blockData, receivedAnswer, 12);
 755                 return 0;
 756         }
 757         return 1;
 758 }
 759
 760 int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
 761
 762         int len;
 763         uint8_t data[17] = {0x00};
 764         data[0] = 0xAF;
 765         memcpy(data+1,key,16);
 766
 767         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 768         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 769
 770         len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);
 771
 772         if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {
 773                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 774                         Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);
 775                 return 1;
 776         }
 777
 778         if (len == 12){
 779                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 780                         Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 781                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 782                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 783                                 receivedAnswer[10],receivedAnswer[11]);
 784                         }
 785                 memcpy(blockData, receivedAnswer, 12);
 786                 return 0;
 787         }
 788         return 1;
 789 }