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                 return 0;
 326         }
 327
 328         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 329                 Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);
 330
 331         memcpy(pack, resp, 4);
 332         return 1;
 333 }
 334
 335 int mifare_ultra_auth(uint8_t *keybytes){
 336
 337         /// 3des2k
 338
 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                 return 0;
 356         }
 357
 358         // tag nonce.
 359         memcpy(enc_random_b,resp+1,8);
 360
 361         // decrypt nonce.
 362         tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );
 363         rol(random_b,8);
 364         memcpy(rnd_ab  ,random_a,8);
 365         memcpy(rnd_ab+8,random_b,8);
 366
 367         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 368                 Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",
 369                         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]);
 370
 371                 Dbprintf("    B: %02x %02x %02x %02x %02x %02x %02x %02x",
 372                         random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);
 373
 374                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 375                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 376
 377                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 378                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );
 379         }
 380
 381         // encrypt    out, in, length, key, iv
 382         tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
 383
 384         len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, resp, respPar, NULL);
 385         if (len != 11) {
 386                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 387                 return 0;
 388         }
 389
 390         uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };
 391         uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };
 392         memcpy(enc_resp, resp+1, 8);
 393
 394         // decrypt    out, in, length, key, iv
 395         tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
 396         if ( memcmp(resp_random_a, random_a, 8) != 0 ) {
 397                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");
 398                 return 0;
 399         }
 400
 401         // encrypt    out, in, length, key, iv
 402         tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
 403
 404         len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, resp, respPar, NULL);
 405         if (len != 11) {
 406                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 407                 return 0;
 408         }
 409
 410         uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };
 411         uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };
 412         memcpy(enc_resp, resp+1, 8);
 413
 414         // decrypt    out, in, length, key, iv
 415         tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
 416         if ( memcmp(resp_random_a, random_a, 8) != 0 ) {
 417                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");
 418                 return 0;
 419         }
 420
 421         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 422                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 423                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],
 424                                 rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 425
 426                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 427                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],
 428                                 rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);
 429
 430                 Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",
 431                                 random_a[0],random_a[1],random_a[2],random_a[3],
 432                                 random_a[4],random_a[5],random_a[6],random_a[7]);
 433
 434                 Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",
 435                                 resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],
 436                                 resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);
 437         }
 438         return 1;
 439 }
 440
 441 int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData)
 442 {
 443         uint16_t len;
 444         uint8_t bt[2];
 445         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 446         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 447
 448         len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 449         if (len == 1) {
 450                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 451                 return 1;
 452         }
 453         if (len != 18) {
 454                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);
 455                 return 2;
 456         }
 457
 458         memcpy(bt, receivedAnswer + 16, 2);
 459         AppendCrc14443a(receivedAnswer, 16);
 460         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 461                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");
 462                 return 3;
 463         }
 464
 465         memcpy(blockData, receivedAnswer, 14);
 466         return 0;
 467 }
 468
 469 int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
 470 {
 471         // variables
 472         uint16_t len, i;
 473         uint32_t pos = 0;
 474         uint8_t par[3] = {0x00};                // enough for 18 Bytes to send
 475         byte_t res = 0;
 476
 477         uint8_t d_block[18], d_block_enc[18];
 478         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 479         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 480
 481         // command MIFARE_CLASSIC_WRITEBLOCK
 482         len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 483
 484         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 485                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 486                 return 1;
 487         }
 488
 489         memcpy(d_block, blockData, 16);
 490         AppendCrc14443a(d_block, 16);
 491
 492         // crypto
 493         for (pos = 0; pos < 18; pos++)
 494         {
 495                 d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
 496                 par[pos>>3] |= (((filter(pcs->odd) ^ oddparity(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));
 497         }
 498
 499         ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
 500
 501         // Receive the response
 502         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 503
 504         res = 0;
 505         for (i = 0; i < 4; i++)
 506                 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;
 507
 508         if ((len != 1) || (res != 0x0A)) {
 509                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd send data2 Error: %02x", res);
 510                 return 2;
 511         }
 512
 513         return 0;
 514 }
 515
 516 int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData)
 517 {
 518         uint16_t len;
 519     uint8_t par[3] = {0};  // enough for 18 parity bits
 520         uint8_t d_block[18] = {0x00};
 521         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 522         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 523
 524     // command MIFARE_CLASSIC_WRITEBLOCK
 525     len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 526
 527     if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 528                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 529                         Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
 530         return 1;
 531     }
 532
 533         memcpy(d_block, blockData, 16);
 534     AppendCrc14443a(d_block, 16);
 535
 536         ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
 537
 538         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 539
 540         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 541                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 542                         Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
 543         return 2;
 544         }
 545     return 0;
 546 }
 547
 548 int mifare_ultra_special_writeblock(uint8_t blockNo, uint8_t *blockData)
 549 {
 550     uint16_t len;
 551         uint8_t d_block[8] = {0x00};
 552         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 553         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 554
 555     // command MIFARE_CLASSIC_WRITEBLOCK
 556         d_block[0]= blockNo;
 557         memcpy(d_block+1,blockData,4);
 558         AppendCrc14443a(d_block, 6);
 559
 560     len = mifare_sendcmd_short_special(NULL, 1, 0xA2, d_block, receivedAnswer, receivedAnswerPar, NULL);
 561
 562     if (receivedAnswer[0] != 0x0A) {   //  0x0a - ACK
 563                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 564                         Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
 565         return 1;
 566     }
 567     return 0;
 568 }
 569
 570 int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)
 571 {
 572         uint16_t len;
 573         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 574         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 575
 576         len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 577         if (len != 0) {
 578                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 579                         Dbprintf("halt error. response len: %x", len);
 580                 return 1;
 581         }
 582
 583         return 0;
 584 }
 585
 586 int mifare_ultra_halt()
 587 {
 588         uint16_t len;
 589         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 590         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 591
 592         len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 593         if (len != 0) {
 594                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 595                         Dbprintf("halt error. response len: %x", len);
 596                 return 1;
 597         }
 598         return 0;
 599 }
 600
 601
 602 // Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),
 603 // plus evtl. 8 sectors with 16 blocks each (4k cards)
 604 uint8_t NumBlocksPerSector(uint8_t sectorNo)
 605 {
 606         if (sectorNo < 32)
 607                 return 4;
 608         else
 609                 return 16;
 610 }
 611
 612 uint8_t FirstBlockOfSector(uint8_t sectorNo)
 613 {
 614         if (sectorNo < 32)
 615                 return sectorNo * 4;
 616         else
 617                 return 32*4 + (sectorNo - 32) * 16;
 618
 619 }
 620
 621
 622 // work with emulator memory
 623 void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
 624         uint8_t* emCARD = BigBuf_get_EM_addr();
 625         memcpy(emCARD + blockNum * 16, data, blocksCount * 16);
 626 }
 627
 628 void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {
 629         uint8_t* emCARD = BigBuf_get_EM_addr();
 630         memcpy(data, emCARD + blockNum * 16, blocksCount * 16);
 631 }
 632
 633 void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
 634         uint8_t* emCARD = BigBuf_get_EM_addr();
 635         memcpy(data, emCARD + bytePtr, byteCount);
 636 }
 637
 638 int emlCheckValBl(int blockNum) {
 639         uint8_t* emCARD = BigBuf_get_EM_addr();
 640         uint8_t* data = emCARD + blockNum * 16;
 641
 642         if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
 643                         (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||
 644                         (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||
 645                         (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||
 646                         (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||
 647                         (data[12] != (data[15] ^ 0xff))
 648                  )
 649                 return 1;
 650         return 0;
 651 }
 652
 653 int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
 654         uint8_t* emCARD = BigBuf_get_EM_addr();
 655         uint8_t* data = emCARD + blockNum * 16;
 656
 657         if (emlCheckValBl(blockNum)) {
 658                 return 1;
 659         }
 660
 661         memcpy(blReg, data, 4);
 662         *blBlock = data[12];
 663         return 0;
 664 }
 665
 666 int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
 667         uint8_t* emCARD = BigBuf_get_EM_addr();
 668         uint8_t* data = emCARD + blockNum * 16;
 669
 670         memcpy(data + 0, &blReg, 4);
 671         memcpy(data + 8, &blReg, 4);
 672         blReg = blReg ^ 0xffffffff;
 673         memcpy(data + 4, &blReg, 4);
 674
 675         data[12] = blBlock;
 676         data[13] = blBlock ^ 0xff;
 677         data[14] = blBlock;
 678         data[15] = blBlock ^ 0xff;
 679
 680         return 0;
 681 }
 682
 683 uint64_t emlGetKey(int sectorNum, int keyType) {
 684         uint8_t key[6];
 685         uint8_t* emCARD = BigBuf_get_EM_addr();
 686
 687         memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
 688         return bytes_to_num(key, 6);
 689 }
 690
 691 void emlClearMem(void) {
 692         int b;
 693
 694         const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 695         const uint8_t uid[]   =   {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
 696         uint8_t* emCARD = BigBuf_get_EM_addr();
 697
 698         memset(emCARD, 0, CARD_MEMORY_SIZE);
 699
 700         // fill sectors trailer data
 701         for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {
 702                 emlSetMem((uint8_t *)trailer, b , 1);
 703         }
 704
 705         // uid
 706         emlSetMem((uint8_t *)uid, 0, 1);
 707         return;
 708 }
 709
 710
 711 // Mifare desfire commands
 712 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)
 713 {
 714     uint8_t dcmd[5] = {0x00};
 715     dcmd[0] = cmd;
 716     memcpy(dcmd+1,data,2);
 717         AppendCrc14443a(dcmd, 3);
 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_sendcmd_special2(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer,uint8_t *answer_parity, uint32_t *timing)
 730 {
 731     uint8_t dcmd[20] = {0x00};
 732     dcmd[0] = cmd;
 733     memcpy(dcmd+1,data,17);
 734         AppendCrc14443a(dcmd, 18);
 735
 736         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 737         int len = ReaderReceive(answer, answer_parity);
 738         if(!len){
 739         if (MF_DBGLEVEL >= MF_DBG_ERROR)
 740                         Dbprintf("Authentication failed. Card timeout.");
 741                 return 1;
 742     }
 743         return len;
 744 }
 745
 746 int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){
 747
 748         int len;
 749         // load key, keynumber
 750         uint8_t data[2]={0x0a, 0x00};
 751         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 752         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 753
 754         len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);
 755         if (len == 1) {
 756                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 757                         Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 758                 return 1;
 759         }
 760
 761         if (len == 12) {
 762                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED)     {
 763                         Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 764                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 765                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 766                                 receivedAnswer[10],receivedAnswer[11]);
 767                         }
 768                         memcpy(blockData, receivedAnswer, 12);
 769                 return 0;
 770         }
 771         return 1;
 772 }
 773
 774 int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
 775
 776         int len;
 777         uint8_t data[17] = {0x00};
 778         data[0] = 0xAF;
 779         memcpy(data+1,key,16);
 780
 781         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 782         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 783
 784         len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);
 785
 786         if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {
 787                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 788                         Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);
 789                 return 1;
 790         }
 791
 792         if (len == 12){
 793                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 794                         Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 795                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 796                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 797                                 receivedAnswer[10],receivedAnswer[11]);
 798                         }
 799                 memcpy(blockData, receivedAnswer, 12);
 800                 return 0;
 801         }
 802         return 1;
 803 }