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         uint8_t random_a[8] = {1,1,1,1,1,1,1,1};
 340         uint8_t random_b[8] = {0x00};
 341         uint8_t enc_random_b[8] = {0x00};
 342         uint8_t rnd_ab[16] = {0x00};
 343         uint8_t IV[8] = {0x00};
 344         uint8_t key[16] = {0x00};
 345         memcpy(key, keybytes, 16);
 346
 347         uint16_t len;
 348         uint8_t resp[19] = {0x00};
 349         uint8_t respPar[3] = {0,0,0};
 350
 351         // REQUEST AUTHENTICATION
 352         len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, resp, respPar ,NULL);
 353         if (len != 11) {
 354                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 355                 OnError(1);
 356                 return 1;
 357         }
 358
 359         // tag nonce.
 360         memcpy(enc_random_b,resp+1,8);
 361
 362         // decrypt nonce.
 363         tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );
 364         rol(random_b,8);
 365         memcpy(rnd_ab  ,random_a,8);
 366         memcpy(rnd_ab+8,random_b,8);
 367
 368         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 369                 Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",
 370                         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]);
 371
 372                 Dbprintf("    B: %02x %02x %02x %02x %02x %02x %02x %02x",
 373                         random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);
 374
 375                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 376                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 377
 378                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 379                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );
 380         }
 381
 382         // encrypt    out, in, length, key, iv
 383         tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
 384
 385         len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, resp, respPar, NULL);
 386         if (len != 11) {
 387                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 388                 OnError(1);
 389                 return 1;
 390         }
 391
 392         uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };
 393         uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };
 394         memcpy(enc_resp, resp+1, 8);
 395
 396         // decrypt    out, in, length, key, iv
 397         tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
 398         if ( memcmp(resp_random_a, random_a, 8) != 0 ) {
 399                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");
 400                 return 1;
 401         }
 402
 403         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 404                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 405                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],
 406                                 rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 407
 408                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 409                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],
 410                                 rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);
 411
 412                 Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",
 413                                 random_a[0],random_a[1],random_a[2],random_a[3],
 414                                 random_a[4],random_a[5],random_a[6],random_a[7]);
 415
 416                 Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",
 417                                 resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],
 418                                 resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);
 419         }
 420         return 0;
 421 }
 422
 423 int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData)
 424 {
 425         uint16_t len;
 426         uint8_t bt[2];
 427         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 428         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 429
 430         len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 431         if (len == 1) {
 432                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 433                 return 1;
 434         }
 435         if (len != 18) {
 436                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);
 437                 return 2;
 438         }
 439
 440         memcpy(bt, receivedAnswer + 16, 2);
 441         AppendCrc14443a(receivedAnswer, 16);
 442         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 443                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");
 444                 return 3;
 445         }
 446
 447         memcpy(blockData, receivedAnswer, 14);
 448         return 0;
 449 }
 450
 451 int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
 452 {
 453         // variables
 454         uint16_t len, i;
 455         uint32_t pos = 0;
 456         uint8_t par[3] = {0x00};                // enough for 18 Bytes to send
 457         byte_t res = 0;
 458
 459         uint8_t d_block[18], d_block_enc[18];
 460         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 461         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 462
 463         // command MIFARE_CLASSIC_WRITEBLOCK
 464         len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 465
 466         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 467                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 468                 return 1;
 469         }
 470
 471         memcpy(d_block, blockData, 16);
 472         AppendCrc14443a(d_block, 16);
 473
 474         // crypto
 475         for (pos = 0; pos < 18; pos++)
 476         {
 477                 d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
 478                 par[pos>>3] |= (((filter(pcs->odd) ^ oddparity(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));
 479         }
 480
 481         ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
 482
 483         // Receive the response
 484         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 485
 486         res = 0;
 487         for (i = 0; i < 4; i++)
 488                 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;
 489
 490         if ((len != 1) || (res != 0x0A)) {
 491                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd send data2 Error: %02x", res);
 492                 return 2;
 493         }
 494
 495         return 0;
 496 }
 497
 498 int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData)
 499 {
 500     uint16_t len;
 501     uint8_t par[3] = {0};  // enough for 18 parity bits
 502         uint8_t d_block[18] = {0x00};
 503         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 504         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 505
 506     // command MIFARE_CLASSIC_WRITEBLOCK
 507     len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 508
 509     if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 510                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 511                         Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
 512         return 1;
 513     }
 514
 515         memcpy(d_block, blockData, 16);
 516     AppendCrc14443a(d_block, 16);
 517
 518         ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
 519
 520     len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 521
 522         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 523                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 524                         Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
 525         return 2;
 526     }
 527     return 0;
 528 }
 529
 530 int mifare_ultra_special_writeblock(uint8_t blockNo, uint8_t *blockData)
 531 {
 532     uint16_t len;
 533         uint8_t d_block[8] = {0x00};
 534         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 535         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 536
 537     // command MIFARE_CLASSIC_WRITEBLOCK
 538         d_block[0]= blockNo;
 539         memcpy(d_block+1,blockData,4);
 540         AppendCrc14443a(d_block, 6);
 541
 542     len = mifare_sendcmd_short_special(NULL, 1, 0xA2, d_block, receivedAnswer, receivedAnswerPar, NULL);
 543
 544     if (receivedAnswer[0] != 0x0A) {   //  0x0a - ACK
 545                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 546                         Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
 547         return 1;
 548     }
 549     return 0;
 550 }
 551
 552 int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)
 553 {
 554         uint16_t len;
 555         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 556         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 557
 558         len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 559         if (len != 0) {
 560                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 561                         Dbprintf("halt error. response len: %x", len);
 562                 return 1;
 563         }
 564
 565         return 0;
 566 }
 567
 568 int mifare_ultra_halt()
 569 {
 570         uint16_t len;
 571         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 572         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 573
 574         len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 575         if (len != 0) {
 576                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 577                         Dbprintf("halt error. response len: %x", len);
 578                 return 1;
 579         }
 580         return 0;
 581 }
 582
 583
 584 // Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),
 585 // plus evtl. 8 sectors with 16 blocks each (4k cards)
 586 uint8_t NumBlocksPerSector(uint8_t sectorNo)
 587 {
 588         if (sectorNo < 32)
 589                 return 4;
 590         else
 591                 return 16;
 592 }
 593
 594 uint8_t FirstBlockOfSector(uint8_t sectorNo)
 595 {
 596         if (sectorNo < 32)
 597                 return sectorNo * 4;
 598         else
 599                 return 32*4 + (sectorNo - 32) * 16;
 600
 601 }
 602
 603
 604 // work with emulator memory
 605 void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
 606         uint8_t* emCARD = BigBuf_get_EM_addr();
 607         memcpy(emCARD + blockNum * 16, data, blocksCount * 16);
 608 }
 609
 610 void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {
 611         uint8_t* emCARD = BigBuf_get_EM_addr();
 612         memcpy(data, emCARD + blockNum * 16, blocksCount * 16);
 613 }
 614
 615 void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
 616         uint8_t* emCARD = BigBuf_get_EM_addr();
 617         memcpy(data, emCARD + bytePtr, byteCount);
 618 }
 619
 620 int emlCheckValBl(int blockNum) {
 621         uint8_t* emCARD = BigBuf_get_EM_addr();
 622         uint8_t* data = emCARD + blockNum * 16;
 623
 624         if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
 625                         (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||
 626                         (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||
 627                         (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||
 628                         (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||
 629                         (data[12] != (data[15] ^ 0xff))
 630                  )
 631                 return 1;
 632         return 0;
 633 }
 634
 635 int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
 636         uint8_t* emCARD = BigBuf_get_EM_addr();
 637         uint8_t* data = emCARD + blockNum * 16;
 638
 639         if (emlCheckValBl(blockNum)) {
 640                 return 1;
 641         }
 642
 643         memcpy(blReg, data, 4);
 644         *blBlock = data[12];
 645         return 0;
 646 }
 647
 648 int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
 649         uint8_t* emCARD = BigBuf_get_EM_addr();
 650         uint8_t* data = emCARD + blockNum * 16;
 651
 652         memcpy(data + 0, &blReg, 4);
 653         memcpy(data + 8, &blReg, 4);
 654         blReg = blReg ^ 0xffffffff;
 655         memcpy(data + 4, &blReg, 4);
 656
 657         data[12] = blBlock;
 658         data[13] = blBlock ^ 0xff;
 659         data[14] = blBlock;
 660         data[15] = blBlock ^ 0xff;
 661
 662         return 0;
 663 }
 664
 665 uint64_t emlGetKey(int sectorNum, int keyType) {
 666         uint8_t key[6];
 667         uint8_t* emCARD = BigBuf_get_EM_addr();
 668
 669         memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
 670         return bytes_to_num(key, 6);
 671 }
 672
 673 void emlClearMem(void) {
 674         int b;
 675
 676         const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 677         const uint8_t uid[]   =   {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
 678         uint8_t* emCARD = BigBuf_get_EM_addr();
 679
 680         memset(emCARD, 0, CARD_MEMORY_SIZE);
 681
 682         // fill sectors trailer data
 683         for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {
 684                 emlSetMem((uint8_t *)trailer, b , 1);
 685         }
 686
 687         // uid
 688         emlSetMem((uint8_t *)uid, 0, 1);
 689         return;
 690 }
 691
 692
 693 // Mifare desfire commands
 694 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)
 695 {
 696     uint8_t dcmd[5] = {0x00};
 697     dcmd[0] = cmd;
 698     memcpy(dcmd+1,data,2);
 699         AppendCrc14443a(dcmd, 3);
 700
 701         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 702         int len = ReaderReceive(answer, answer_parity);
 703         if(!len) {
 704                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 705                         Dbprintf("Authentication failed. Card timeout.");
 706                 return 1;
 707     }
 708         return len;
 709 }
 710
 711 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)
 712 {
 713     uint8_t dcmd[20] = {0x00};
 714     dcmd[0] = cmd;
 715     memcpy(dcmd+1,data,17);
 716         AppendCrc14443a(dcmd, 18);
 717
 718         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 719         int len = ReaderReceive(answer, answer_parity);
 720         if(!len){
 721         if (MF_DBGLEVEL >= MF_DBG_ERROR)
 722                         Dbprintf("Authentication failed. Card timeout.");
 723                 return 1;
 724     }
 725         return len;
 726 }
 727
 728 int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){
 729
 730         int len;
 731         // load key, keynumber
 732         uint8_t data[2]={0x0a, 0x00};
 733         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 734         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 735
 736         len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);
 737         if (len == 1) {
 738                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 739                         Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 740                 return 1;
 741         }
 742
 743         if (len == 12) {
 744                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED)     {
 745                         Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 746                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 747                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 748                                 receivedAnswer[10],receivedAnswer[11]);
 749                         }
 750                         memcpy(blockData, receivedAnswer, 12);
 751                 return 0;
 752         }
 753         return 1;
 754 }
 755
 756 int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
 757
 758         int len;
 759         uint8_t data[17] = {0x00};
 760         data[0] = 0xAF;
 761         memcpy(data+1,key,16);
 762
 763         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 764         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 765
 766         len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);
 767
 768         if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {
 769                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 770                         Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);
 771                 return 1;
 772         }
 773
 774         if (len == 12){
 775                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 776                         Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 777                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 778                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 779                                 receivedAnswer[10],receivedAnswer[11]);
 780                         }
 781                 memcpy(blockData, receivedAnswer, 12);
 782                 return 0;
 783         }
 784         return 1;
 785 }