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 "parity.h"
  22 #include "des.h"
  23
  24 int MF_DBGLEVEL = MF_DBG_ALL;
  25
  26 // crypto1 helpers
  27 void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){
  28         uint8_t bt = 0;
  29         int i;
  30
  31         if (len != 1) {
  32                 for (i = 0; i < len; i++)
  33                         data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
  34         } else {
  35                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 0)) << 0;
  36                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 1)) << 1;
  37                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 2)) << 2;
  38                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 3)) << 3;
  39                 data[0] = bt;
  40         }
  41         return;
  42 }
  43
  44 void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {
  45         uint8_t bt = 0;
  46         int i;
  47         par[0] = 0;
  48
  49         for (i = 0; i < len; i++) {
  50                 bt = data[i];
  51                 data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
  52                 if ((i&0x0007) == 0)
  53                         par[i>>3] = 0;
  54                 par[i>>3] |= (((filter(pcs->odd) ^ oddparity8(bt)) & 0x01)<<(7-(i&0x0007)));
  55         }
  56 }
  57
  58 uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {
  59         uint8_t bt = 0;
  60         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 0)) << 0;
  61         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 1)) << 1;
  62         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 2)) << 2;
  63         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 3)) << 3;
  64         return bt;
  65 }
  66
  67 // send X byte basic commands
  68 int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)
  69 {
  70         uint8_t dcmd[data_size+3];
  71     dcmd[0] = cmd;
  72         memcpy(dcmd+1,data,data_size);
  73         AppendCrc14443a(dcmd, data_size+1);
  74         ReaderTransmit(dcmd, sizeof(dcmd), timing);
  75         int len = ReaderReceive(answer, answer_parity);
  76         if(!len) {
  77                 if (MF_DBGLEVEL >= MF_DBG_ERROR)   Dbprintf("%02X Cmd failed. Card timeout.", cmd);
  78                         len = ReaderReceive(answer,answer_parity);
  79     }
  80         return len;
  81 }
  82
  83 // send 2 byte commands
  84 int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing)
  85 {
  86         uint8_t dcmd[4] = {0x00};
  87         uint8_t ecmd[4] = {0x00};
  88         uint16_t pos, res;
  89         uint8_t par[1] = {0x00};                        // 1 Byte parity is enough here
  90         dcmd[0] = cmd;
  91         dcmd[1] = data;
  92         AppendCrc14443a(dcmd, 2);
  93
  94         memcpy(ecmd, dcmd, sizeof(dcmd));
  95
  96         if (crypted) {
  97                 par[0] = 0;
  98                 for (pos = 0; pos < 4; pos++) {
  99                         ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];
 100                         par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos));
 101                 }
 102
 103                 ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);
 104
 105         } else {
 106                 ReaderTransmit(dcmd, sizeof(dcmd), timing);
 107         }
 108
 109         int len = ReaderReceive(answer, par);
 110
 111         if (answer_parity) *answer_parity = par[0];
 112
 113         if (crypted == CRYPT_ALL) {
 114                 if (len == 1) {
 115                         res = 0;
 116                         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 0)) << 0;
 117                         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 1)) << 1;
 118                         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 2)) << 2;
 119                         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 3)) << 3;
 120                         answer[0] = res;
 121
 122                 } else {
 123                         for (pos = 0; pos < len; pos++)
 124                                 answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];
 125                 }
 126         }
 127
 128         return len;
 129 }
 130
 131 // mifare classic commands
 132 int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested)
 133 {
 134         return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);
 135 }
 136
 137 int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested, uint32_t *ntptr, uint32_t *timing)
 138 {
 139         // variables
 140         int len;
 141         uint32_t pos;
 142         uint8_t tmp4[4] = {0x00};
 143         uint8_t par[1] = {0x00};
 144
 145         // "random" reader nonce:
 146         byte_t nr[4] = {0x55, 0x41, 0x49, 0x92};
 147         //byte_t nr[4] = {0x01, 0x01, 0x01, 0x01};
 148
 149         uint32_t nt, ntpp; // Supplied tag nonce
 150
 151         uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
 152         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 153         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 154
 155         // Transmit MIFARE_CLASSIC_AUTH
 156         len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);
 157         if (MF_DBGLEVEL >= 4)   Dbprintf("rand tag nonce len: %x", len);
 158         if (len != 4) return 1;
 159
 160         // Save the tag nonce (nt)
 161         nt = bytes_to_num(receivedAnswer, 4);
 162
 163         //  ----------------------------- crypto1 create
 164         if (isNested)
 165                 crypto1_destroy(pcs);
 166
 167         // Init cipher with key
 168         crypto1_create(pcs, ui64Key);
 169
 170         if (isNested == AUTH_NESTED) {
 171                 // decrypt nt with help of new key
 172                 nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;
 173         } else {
 174                 // Load (plain) uid^nt into the cipher
 175                 crypto1_word(pcs, nt ^ uid, 0);
 176         }
 177
 178         // some statistic
 179         if (!ntptr && (MF_DBGLEVEL >= 3))
 180                 Dbprintf("auth uid: %08x nt: %08x", uid, nt);
 181
 182         // save Nt
 183         if (ntptr)
 184                 *ntptr = nt;
 185
 186         // Generate (encrypted) nr+parity by loading it into the cipher (Nr)
 187         par[0] = 0;
 188         for (pos = 0; pos < 4; pos++) {
 189                 mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];
 190                 par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));
 191         }
 192
 193         // Skip 32 bits in pseudo random generator
 194         nt = prng_successor(nt,32);
 195
 196         //  ar+parity
 197         for (pos = 4; pos < 8; pos++) {
 198                 nt = prng_successor(nt,8);
 199                 mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);
 200                 par[0] |= (((filter(pcs->odd) ^ oddparity8(nt & 0xff)) & 0x01) << (7-pos));
 201         }
 202
 203         // Transmit reader nonce and reader answer
 204         ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);
 205
 206         // Receive 4 byte tag answer
 207         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 208         if (!len) {
 209                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Card timeout.");
 210                 return 2;
 211         }
 212
 213         memcpy(tmp4, receivedAnswer, 4);
 214         ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);
 215
 216         if (ntpp != bytes_to_num(tmp4, 4)) {
 217                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Error card response.");
 218                 return 3;
 219         }
 220         return 0;
 221 }
 222
 223 int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
 224 {
 225         // variables
 226         int len;
 227         uint8_t bt[2] = {0x00};
 228
 229         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 230         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 231
 232         // command MIFARE_CLASSIC_READBLOCK
 233         len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 234         if (len == 1) {
 235                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 236                 return 1;
 237         }
 238         if (len != 18) {
 239                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: card timeout. len: %x", len);
 240                 return 2;
 241         }
 242
 243         memcpy(bt, receivedAnswer + 16, 2);
 244         AppendCrc14443a(receivedAnswer, 16);
 245         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 246                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd CRC response error.");
 247                 return 3;
 248         }
 249
 250         memcpy(blockData, receivedAnswer, 16);
 251         return 0;
 252 }
 253
 254 // mifare ultralight commands
 255 int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){
 256
 257         uint16_t len;
 258         uint8_t resp[4] = {0x00};
 259         uint8_t respPar[1] = {0x00};
 260         uint8_t key[4] = {0x00};
 261         memcpy(key, keybytes, 4);
 262
 263         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 264                 Dbprintf("EV1 Auth : %02x%02x%02x%02x", key[0], key[1], key[2], key[3]);
 265
 266         len = mifare_sendcmd(0x1B, key, sizeof(key), resp, respPar, NULL);
 267
 268         if (len != 4) {
 269                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);
 270                 return 0;
 271         }
 272
 273         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 274                 Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);
 275
 276         memcpy(pack, resp, 4);
 277         return 1;
 278 }
 279
 280 int mifare_ultra_auth(uint8_t *keybytes){
 281
 282         /// 3des2k
 283
 284         uint8_t random_a[8] = {1,1,1,1,1,1,1,1};
 285         uint8_t random_b[8] = {0x00};
 286         uint8_t enc_random_b[8] = {0x00};
 287         uint8_t rnd_ab[16] = {0x00};
 288         uint8_t IV[8] = {0x00};
 289         uint8_t key[16] = {0x00};
 290         memcpy(key, keybytes, 16);
 291
 292         uint16_t len;
 293         uint8_t resp[19] = {0x00};
 294         uint8_t respPar[3] = {0,0,0};
 295
 296         // REQUEST AUTHENTICATION
 297         len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, resp, respPar ,NULL);
 298         if (len != 11) {
 299                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 300                 return 0;
 301         }
 302
 303         // tag nonce.
 304         memcpy(enc_random_b,resp+1,8);
 305
 306         // decrypt nonce.
 307         tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );
 308         rol(random_b,8);
 309         memcpy(rnd_ab  ,random_a,8);
 310         memcpy(rnd_ab+8,random_b,8);
 311
 312         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 313                 Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",
 314                         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]);
 315
 316                 Dbprintf("    B: %02x %02x %02x %02x %02x %02x %02x %02x",
 317                         random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);
 318
 319                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 320                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 321
 322                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 323                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );
 324         }
 325
 326         // encrypt    out, in, length, key, iv
 327         tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
 328         //len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, resp, respPar, NULL);
 329         len = mifare_sendcmd(0xAF, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL);
 330         if (len != 11) {
 331                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 332                 return 0;
 333         }
 334
 335         uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };
 336         uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };
 337         memcpy(enc_resp, resp+1, 8);
 338
 339         // decrypt    out, in, length, key, iv
 340         tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
 341         if ( memcmp(resp_random_a, random_a, 8) != 0 ) {
 342                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");
 343                 return 0;
 344         }
 345
 346         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 347                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 348                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],
 349                                 rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 350
 351                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 352                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],
 353                                 rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);
 354
 355                 Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",
 356                                 random_a[0],random_a[1],random_a[2],random_a[3],
 357                                 random_a[4],random_a[5],random_a[6],random_a[7]);
 358
 359                 Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",
 360                                 resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],
 361                                 resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);
 362         }
 363         return 1;
 364 }
 365
 366 int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData)
 367 {
 368         uint16_t len;
 369         uint8_t bt[2] = {0x00};
 370         uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
 371         uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
 372
 373         len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 374         if (len == 1) {
 375                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 376                 return 1;
 377         }
 378         if (len != 18) {
 379                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);
 380                 return 2;
 381         }
 382
 383         memcpy(bt, receivedAnswer + 16, 2);
 384         AppendCrc14443a(receivedAnswer, 16);
 385         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 386                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");
 387                 return 3;
 388         }
 389
 390         memcpy(blockData, receivedAnswer, 14);
 391         return 0;
 392 }
 393
 394 int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
 395 {
 396         // variables
 397         uint16_t len;
 398         uint32_t pos = 0;
 399         uint8_t par[3] = {0x00};                // enough for 18 Bytes to send
 400         byte_t res = 0;
 401
 402         uint8_t d_block[18], d_block_enc[18];
 403         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 404         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 405
 406         // command MIFARE_CLASSIC_WRITEBLOCK
 407         len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 408
 409         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 410                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 411                 return 1;
 412         }
 413
 414         memcpy(d_block, blockData, 16);
 415         AppendCrc14443a(d_block, 16);
 416
 417         // crypto
 418         for (pos = 0; pos < 18; pos++) {
 419                 d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
 420                 par[pos>>3] |= (((filter(pcs->odd) ^ oddparity8(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));
 421         }
 422
 423         ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
 424
 425         // Receive the response
 426         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 427
 428         res = 0;
 429         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 0)) << 0;
 430         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 1)) << 1;
 431         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 2)) << 2;
 432         res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 3)) << 3;
 433
 434         if ((len != 1) || (res != 0x0A)) {
 435                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd send data2 Error: %02x", res);
 436                 return 2;
 437         }
 438
 439         return 0;
 440 }
 441
 442 /* // command not needed, but left for future testing
 443 int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData)
 444 {
 445         uint16_t len;
 446     uint8_t par[3] = {0};  // enough for 18 parity bits
 447         uint8_t d_block[18] = {0x00};
 448         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 449         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 450
 451     len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 452
 453     if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 454                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 455                         Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
 456         return 1;
 457     }
 458
 459         memcpy(d_block, blockData, 16);
 460     AppendCrc14443a(d_block, 16);
 461
 462         ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
 463
 464         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 465
 466         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 467                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 468                         Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
 469         return 2;
 470         }
 471     return 0;
 472 }
 473 */
 474
 475 int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData)
 476 {
 477     uint16_t len;
 478         uint8_t d_block[5] = {0x00};
 479         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 480         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 481
 482     // command MIFARE_CLASSIC_WRITEBLOCK
 483         d_block[0]= blockNo;
 484         memcpy(d_block+1,blockData,4);
 485         //AppendCrc14443a(d_block, 6);
 486
 487         len = mifare_sendcmd(0xA2, d_block, sizeof(d_block), receivedAnswer, receivedAnswerPar, NULL);
 488
 489     if (receivedAnswer[0] != 0x0A) {   //  0x0a - ACK
 490                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 491                         Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
 492         return 1;
 493     }
 494     return 0;
 495 }
 496 int mifare_classic_halt_ex(struct Crypto1State *pcs) {
 497         uint16_t len;
 498         uint8_t receivedAnswer[4] = {0x00};
 499         uint8_t receivedAnswerPar[4] = {0x00};
 500
 501         len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 502         if (len != 0) {
 503                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("halt error. response len: %x", len);
 504                 return 1;
 505         }
 506         return 0;
 507 }
 508 int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) {
 509         return mifare_classic_halt_ex(pcs);
 510 }
 511
 512 int mifare_ultra_halt()
 513 {
 514         uint16_t len;
 515         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 516         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 517
 518         len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 519         if (len != 0) {
 520                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 521                         Dbprintf("halt error. response len: %x", len);
 522                 return 1;
 523         }
 524         return 0;
 525 }
 526
 527
 528 // Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),
 529 // plus evtl. 8 sectors with 16 blocks each (4k cards)
 530 uint8_t NumBlocksPerSector(uint8_t sectorNo)
 531 {
 532         if (sectorNo < 32)
 533                 return 4;
 534         return 16;
 535 }
 536
 537 uint8_t FirstBlockOfSector(uint8_t sectorNo)
 538 {
 539         if (sectorNo < 32)
 540                 return sectorNo * 4;
 541         else
 542                 return 32*4 + (sectorNo - 32) * 16;
 543
 544 }
 545
 546
 547 // work with emulator memory
 548 void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
 549         emlSetMem_xt(data, blockNum, blocksCount, 16);
 550 }
 551
 552 void emlSetMem_xt(uint8_t *data, int blockNum, int blocksCount, int blockBtWidth) {
 553         uint8_t* emCARD = BigBuf_get_EM_addr();
 554         memcpy(emCARD + blockNum * blockBtWidth, data, blocksCount * blockBtWidth);
 555 }
 556
 557 void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {
 558         uint8_t* emCARD = BigBuf_get_EM_addr();
 559         memcpy(data, emCARD + blockNum * 16, blocksCount * 16);
 560 }
 561
 562 void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
 563         uint8_t* emCARD = BigBuf_get_EM_addr();
 564         memcpy(data, emCARD + bytePtr, byteCount);
 565 }
 566
 567 int emlCheckValBl(int blockNum) {
 568         uint8_t* emCARD = BigBuf_get_EM_addr();
 569         uint8_t* data = emCARD + blockNum * 16;
 570
 571         if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
 572                         (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||
 573                         (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||
 574                         (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||
 575                         (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||
 576                         (data[12] != (data[15] ^ 0xff))
 577                  )
 578                 return 1;
 579         return 0;
 580 }
 581
 582 int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
 583         uint8_t* emCARD = BigBuf_get_EM_addr();
 584         uint8_t* data = emCARD + blockNum * 16;
 585
 586         if (emlCheckValBl(blockNum))
 587                 return 1;
 588
 589         memcpy(blReg, data, 4);
 590         *blBlock = data[12];
 591         return 0;
 592 }
 593
 594 int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
 595         uint8_t* emCARD = BigBuf_get_EM_addr();
 596         uint8_t* data = emCARD + blockNum * 16;
 597
 598         memcpy(data + 0, &blReg, 4);
 599         memcpy(data + 8, &blReg, 4);
 600         blReg = blReg ^ 0xffffffff;
 601         memcpy(data + 4, &blReg, 4);
 602
 603         data[12] = blBlock;
 604         data[13] = blBlock ^ 0xff;
 605         data[14] = blBlock;
 606         data[15] = blBlock ^ 0xff;
 607
 608         return 0;
 609 }
 610
 611 uint64_t emlGetKey(int sectorNum, int keyType) {
 612         uint8_t key[6] = {0x00};
 613         uint8_t* emCARD = BigBuf_get_EM_addr();
 614
 615         memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
 616         return bytes_to_num(key, 6);
 617 }
 618
 619 void emlClearMem(void) {
 620         int b;
 621
 622         const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 623         const uint8_t uid[]   =   {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
 624         uint8_t* emCARD = BigBuf_get_EM_addr();
 625
 626         memset(emCARD, 0, CARD_MEMORY_SIZE);
 627
 628         // fill sectors trailer data
 629         for(b = 3; b < 256; b<127?(b+=4):(b+=16))
 630                 emlSetMem((uint8_t *)trailer, b , 1);
 631
 632         // uid
 633         emlSetMem((uint8_t *)uid, 0, 1);
 634         return;
 635 }
 636
 637
 638 // Mifare desfire commands
 639 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)
 640 {
 641     uint8_t dcmd[5] = {0x00};
 642     dcmd[0] = cmd;
 643     memcpy(dcmd+1,data,2);
 644         AppendCrc14443a(dcmd, 3);
 645
 646         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 647         int len = ReaderReceive(answer, answer_parity);
 648         if(!len) {
 649                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 650                         Dbprintf("Authentication failed. Card timeout.");
 651                 return 1;
 652     }
 653         return len;
 654 }
 655
 656 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)
 657 {
 658     uint8_t dcmd[20] = {0x00};
 659     dcmd[0] = cmd;
 660     memcpy(dcmd+1,data,17);
 661         AppendCrc14443a(dcmd, 18);
 662
 663         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 664         int len = ReaderReceive(answer, answer_parity);
 665         if(!len){
 666         if (MF_DBGLEVEL >= MF_DBG_ERROR)
 667                         Dbprintf("Authentication failed. Card timeout.");
 668                 return 1;
 669     }
 670         return len;
 671 }
 672
 673 int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){
 674
 675         int len;
 676         // load key, keynumber
 677         uint8_t data[2]={0x0a, 0x00};
 678         uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
 679         uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
 680
 681         len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);
 682         if (len == 1) {
 683                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 684                         Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 685                 return 1;
 686         }
 687
 688         if (len == 12) {
 689                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED)     {
 690                         Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 691                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 692                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 693                                 receivedAnswer[10],receivedAnswer[11]);
 694                         }
 695                         memcpy(blockData, receivedAnswer, 12);
 696                 return 0;
 697         }
 698         return 1;
 699 }
 700
 701 int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
 702
 703         int len;
 704         uint8_t data[17] = {0x00};
 705         data[0] = 0xAF;
 706         memcpy(data+1,key,16);
 707
 708         uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
 709         uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
 710
 711         len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);
 712
 713         if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {
 714                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 715                         Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);
 716                 return 1;
 717         }
 718
 719         if (len == 12){
 720                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 721                         Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 722                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 723                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 724                                 receivedAnswer[10],receivedAnswer[11]);
 725                         }
 726                 memcpy(blockData, receivedAnswer, 12);
 727                 return 0;
 728         }
 729         return 1;
 730 }