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