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