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 <string.h>
  13 #include "mifareutil.h"
  14 #include "proxmark3.h"
  15 #include "apps.h"
  16 #include "util.h"
  17 #include "parity.h"
  18
  19 #include "iso14443crc.h"
  20 #include "iso14443a.h"
  21 #include "crapto1/crapto1.h"
  22 #include "polarssl/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 = 0;
  36                 for (i = 0; i < 4; i++)
  37                         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], i)) << i;
  38
  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         return;
  57 }
  58
  59 uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {
  60         uint8_t bt = 0;
  61         int i;
  62
  63         for (i = 0; i < 4; i++)
  64                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, i)) << i;
  65
  66         return bt;
  67 }
  68
  69 // send X byte basic commands
  70 int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)
  71 {
  72         uint8_t dcmd[data_size+3];
  73         dcmd[0] = cmd;
  74         memcpy(dcmd+1,data,data_size);
  75         AppendCrc14443a(dcmd, data_size+1);
  76         ReaderTransmit(dcmd, sizeof(dcmd), timing);
  77         int len = ReaderReceive(answer, answer_parity);
  78         if(!len) {
  79                 if (MF_DBGLEVEL >= MF_DBG_ERROR)   Dbprintf("%02X Cmd failed. Card timeout.", cmd);
  80                         len = ReaderReceive(answer,answer_parity);
  81                 //return 0;
  82         }
  83         return len;
  84 }
  85
  86 // send 2 byte commands
  87 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)
  88 {
  89         uint8_t dcmd[4], ecmd[4];
  90         uint16_t pos, res;
  91         uint8_t par[1];                 // 1 Byte parity is enough here
  92         dcmd[0] = cmd;
  93         dcmd[1] = data;
  94         AppendCrc14443a(dcmd, 2);
  95
  96         memcpy(ecmd, dcmd, sizeof(dcmd));
  97
  98         if (crypted) {
  99                 par[0] = 0;
 100                 for (pos = 0; pos < 4; pos++)
 101                 {
 102                         ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];
 103                         par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos));
 104                 }
 105
 106                 ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);
 107
 108         } else {
 109                 ReaderTransmit(dcmd, sizeof(dcmd), timing);
 110         }
 111
 112         int len = ReaderReceive(answer, par);
 113
 114         if (answer_parity) *answer_parity = par[0];
 115
 116         if (crypted == CRYPT_ALL) {
 117                 if (len == 1) {
 118                         res = 0;
 119                         for (pos = 0; pos < 4; pos++)
 120                                 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], pos)) << pos;
 121
 122                         answer[0] = res;
 123
 124                 } else {
 125                         for (pos = 0; pos < len; pos++)
 126                         {
 127                                 answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];
 128                         }
 129                 }
 130         }
 131
 132         return len;
 133 }
 134
 135 // mifare classic commands
 136 int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested)
 137 {
 138         return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);
 139 }
 140
 141 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)
 142 {
 143         // variables
 144         int len;
 145         uint32_t pos;
 146         uint8_t tmp4[4];
 147         uint8_t par[1] = {0x00};
 148         byte_t nr[4];
 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];
 153         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 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         // "random" reader nonce:
 161         nr[0] = 0x55;
 162         nr[1] = 0x41;
 163         nr[2] = 0x49;
 164         nr[3] = 0x92;
 165
 166         // Save the tag nonce (nt)
 167         nt = bytes_to_num(receivedAnswer, 4);
 168
 169         //  ----------------------------- crypto1 create
 170         if (isNested)
 171                 crypto1_destroy(pcs);
 172
 173         // Init cipher with key
 174         crypto1_create(pcs, ui64Key);
 175
 176         if (isNested == AUTH_NESTED) {
 177                 // decrypt nt with help of new key
 178                 nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;
 179         } else {
 180                 // Load (plain) uid^nt into the cipher
 181                 crypto1_word(pcs, nt ^ uid, 0);
 182         }
 183
 184         // some statistic
 185         if (!ntptr && (MF_DBGLEVEL >= 3))
 186                 Dbprintf("auth uid: %08x nt: %08x", uid, nt);
 187
 188         // save Nt
 189         if (ntptr)
 190                 *ntptr = nt;
 191
 192         // Generate (encrypted) nr+parity by loading it into the cipher (Nr)
 193         par[0] = 0;
 194         for (pos = 0; pos < 4; pos++)
 195         {
 196                 mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];
 197                 par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));
 198         }
 199
 200         // Skip 32 bits in pseudo random generator
 201         nt = prng_successor(nt,32);
 202
 203         //  ar+parity
 204         for (pos = 4; pos < 8; pos++)
 205         {
 206                 nt = prng_successor(nt,8);
 207                 mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);
 208                 par[0] |= (((filter(pcs->odd) ^ oddparity8(nt)) & 0x01) << (7-pos));
 209         }
 210
 211         // Transmit reader nonce and reader answer
 212         ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);
 213
 214         // Receive 4 byte tag answer
 215         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 216         if (!len)
 217         {
 218                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Card timeout.");
 219                 return 2;
 220         }
 221
 222         memcpy(tmp4, receivedAnswer, 4);
 223         ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);
 224
 225         if (ntpp != bytes_to_num(tmp4, 4)) {
 226                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Error card response.");
 227                 return 3;
 228         }
 229
 230         return 0;
 231 }
 232
 233 int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
 234 {
 235         // variables
 236         int len;
 237         uint8_t bt[2];
 238
 239         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 240         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 241
 242         // command MIFARE_CLASSIC_READBLOCK
 243         len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 244         if (len == 1) {
 245                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 246                 return 1;
 247         }
 248         if (len != 18) {
 249                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: card timeout. len: %x", len);
 250                 return 2;
 251         }
 252
 253         memcpy(bt, receivedAnswer + 16, 2);
 254         AppendCrc14443a(receivedAnswer, 16);
 255         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 256                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd CRC response error.");
 257                 return 3;
 258         }
 259
 260         memcpy(blockData, receivedAnswer, 16);
 261         return 0;
 262 }
 263
 264 // mifare ultralight commands
 265 int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){
 266
 267         uint16_t len;
 268         uint8_t resp[4];
 269         uint8_t respPar[1];
 270         uint8_t key[4] = {0x00};
 271         memcpy(key, keybytes, 4);
 272
 273         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 274                 Dbprintf("EV1 Auth : %02x%02x%02x%02x", key[0], key[1], key[2], key[3]);
 275         len = mifare_sendcmd(0x1B, key, sizeof(key), resp, respPar, NULL);
 276         //len = mifare_sendcmd_short_mfuev1auth(NULL, 0, 0x1B, key, resp, respPar, NULL);
 277         if (len != 4) {
 278                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);
 279                 return 0;
 280         }
 281
 282         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 283                 Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);
 284
 285         memcpy(pack, resp, 4);
 286         return 1;
 287 }
 288
 289 int mifare_ultra_auth(uint8_t *keybytes){
 290
 291         /// 3des2k
 292
 293         des3_context ctx = { 0x00 };
 294         uint8_t random_a[8] = {1,1,1,1,1,1,1,1};
 295         uint8_t random_b[8] = {0x00};
 296         uint8_t enc_random_b[8] = {0x00};
 297         uint8_t rnd_ab[16] = {0x00};
 298         uint8_t IV[8] = {0x00};
 299         uint8_t key[16] = {0x00};
 300         memcpy(key, keybytes, 16);
 301
 302         uint16_t len;
 303         uint8_t resp[19] = {0x00};
 304         uint8_t respPar[3] = {0,0,0};
 305
 306         // REQUEST AUTHENTICATION
 307         len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, resp, respPar ,NULL);
 308         if (len != 11) {
 309                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 310                 return 0;
 311         }
 312
 313         // tag nonce.
 314         memcpy(enc_random_b,resp+1,8);
 315
 316         // decrypt nonce.
 317         // tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );
 318         des3_set2key_dec(&ctx, key);
 319         des3_crypt_cbc(&ctx     // des3_context
 320                 , DES_DECRYPT           // int mode
 321                 , sizeof(random_b)      // length
 322                 , IV                    // iv[8]
 323                 , enc_random_b          // input
 324                 , random_b                      // output
 325                 );
 326
 327         rol(random_b,8);
 328         memcpy(rnd_ab  ,random_a,8);
 329         memcpy(rnd_ab+8,random_b,8);
 330
 331         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 332                 Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",
 333                         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]);
 334
 335                 Dbprintf("    B: %02x %02x %02x %02x %02x %02x %02x %02x",
 336                         random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);
 337
 338                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 339                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 340
 341                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 342                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );
 343         }
 344
 345         // encrypt    out, in, length, key, iv
 346         //tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
 347         des3_set2key_enc(&ctx, key);
 348         des3_crypt_cbc(&ctx     // des3_context
 349                 , DES_ENCRYPT           // int mode
 350                 , sizeof(rnd_ab)        // length
 351                 , enc_random_b          // iv[8]
 352                 , rnd_ab                        // input
 353                 , rnd_ab                        // output
 354                 );
 355
 356         //len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, resp, respPar, NULL);
 357         len = mifare_sendcmd(0xAF, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL);
 358         if (len != 11) {
 359                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 360                 return 0;
 361         }
 362
 363         uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };
 364         uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };
 365         memcpy(enc_resp, resp+1, 8);
 366
 367         // decrypt    out, in, length, key, iv
 368         // tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
 369         des3_set2key_dec(&ctx, key);
 370         des3_crypt_cbc(&ctx     // des3_context
 371                 , DES_DECRYPT           // int mode
 372                 , 8                                     // length
 373                 , enc_random_b          // iv[8]
 374                 , enc_resp                      // input
 375                 , resp_random_a         // output
 376                 );
 377         if ( memcmp(resp_random_a, random_a, 8) != 0 ) {
 378                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");
 379                 return 0;
 380         }
 381
 382         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 383                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 384                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],
 385                                 rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 386
 387                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 388                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],
 389                                 rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);
 390
 391                 Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",
 392                                 random_a[0],random_a[1],random_a[2],random_a[3],
 393                                 random_a[4],random_a[5],random_a[6],random_a[7]);
 394
 395                 Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",
 396                                 resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],
 397                                 resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);
 398         }
 399         return 1;
 400 }
 401
 402 int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData)
 403 {
 404         uint16_t len;
 405         uint8_t bt[2];
 406         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 407         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 408
 409
 410         len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 411         if (len == 1) {
 412                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 413                 return 1;
 414         }
 415         if (len != 18) {
 416                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);
 417                 return 2;
 418         }
 419
 420         memcpy(bt, receivedAnswer + 16, 2);
 421         AppendCrc14443a(receivedAnswer, 16);
 422         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 423                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");
 424                 return 3;
 425         }
 426
 427         memcpy(blockData, receivedAnswer, 14);
 428         return 0;
 429 }
 430
 431 int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
 432 {
 433         // variables
 434         uint16_t len, i;
 435         uint32_t pos;
 436         uint8_t par[3] = {0};           // enough for 18 Bytes to send
 437         byte_t res;
 438
 439         uint8_t d_block[18], d_block_enc[18];
 440         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 441         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 442
 443         // command MIFARE_CLASSIC_WRITEBLOCK
 444         len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 445
 446         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 447                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 448                 return 1;
 449         }
 450
 451         memcpy(d_block, blockData, 16);
 452         AppendCrc14443a(d_block, 16);
 453
 454         // crypto
 455         for (pos = 0; pos < 18; pos++)
 456         {
 457                 d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
 458                 par[pos>>3] |= (((filter(pcs->odd) ^ oddparity8(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));
 459         }
 460
 461         ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
 462
 463         // Receive the response
 464         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 465
 466         res = 0;
 467         for (i = 0; i < 4; i++)
 468                 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;
 469
 470         if ((len != 1) || (res != 0x0A)) {
 471                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd send data2 Error: %02x", res);
 472                 return 2;
 473         }
 474
 475         return 0;
 476 }
 477
 478 /* // command not needed, but left for future testing
 479 int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData)
 480 {
 481         uint16_t len;
 482         uint8_t par[3] = {0};  // enough for 18 parity bits
 483         uint8_t d_block[18] = {0x00};
 484         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 485         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 486
 487         len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 488
 489         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 490                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 491                         Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
 492                 return 1;
 493         }
 494
 495         memcpy(d_block, blockData, 16);
 496         AppendCrc14443a(d_block, 16);
 497
 498         ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
 499
 500         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 501
 502         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 503                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 504                         Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
 505                 return 2;
 506         }
 507         return 0;
 508 }
 509 */
 510
 511 int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData)
 512 {
 513         uint16_t len;
 514         uint8_t d_block[5] = {0x00};
 515         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 516         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 517
 518         // command MIFARE_CLASSIC_WRITEBLOCK
 519         d_block[0]= blockNo;
 520         memcpy(d_block+1,blockData,4);
 521         //AppendCrc14443a(d_block, 6);
 522
 523         len = mifare_sendcmd(0xA2, d_block, sizeof(d_block), receivedAnswer, receivedAnswerPar, NULL);
 524
 525         if (receivedAnswer[0] != 0x0A) {   //  0x0a - ACK
 526                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 527                         Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
 528                 return 1;
 529         }
 530         return 0;
 531 }
 532
 533 int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)
 534 {
 535         uint16_t len;
 536         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 537         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 538
 539         len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 540         if (len != 0) {
 541                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 542                         Dbprintf("halt error. response len: %x", len);
 543                 return 1;
 544         }
 545
 546         return 0;
 547 }
 548
 549 int mifare_ultra_halt()
 550 {
 551         uint16_t len;
 552         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 553         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 554
 555         len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 556         if (len != 0) {
 557                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 558                         Dbprintf("halt error. response len: %x", len);
 559                 return 1;
 560         }
 561         return 0;
 562 }
 563
 564
 565 // Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),
 566 // plus evtl. 8 sectors with 16 blocks each (4k cards)
 567 uint8_t NumBlocksPerSector(uint8_t sectorNo)
 568 {
 569         if (sectorNo < 32)
 570                 return 4;
 571         else
 572                 return 16;
 573 }
 574
 575 uint8_t FirstBlockOfSector(uint8_t sectorNo)
 576 {
 577         if (sectorNo < 32)
 578                 return sectorNo * 4;
 579         else
 580                 return 32*4 + (sectorNo - 32) * 16;
 581
 582 }
 583
 584
 585 // work with emulator memory
 586 void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
 587         uint8_t* emCARD = BigBuf_get_EM_addr();
 588         memcpy(emCARD + blockNum * 16, data, blocksCount * 16);
 589 }
 590
 591 void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {
 592         uint8_t* emCARD = BigBuf_get_EM_addr();
 593         memcpy(data, emCARD + blockNum * 16, blocksCount * 16);
 594 }
 595
 596 void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
 597         uint8_t* emCARD = BigBuf_get_EM_addr();
 598         memcpy(data, emCARD + bytePtr, byteCount);
 599 }
 600
 601 int emlCheckValBl(int blockNum) {
 602         uint8_t* emCARD = BigBuf_get_EM_addr();
 603         uint8_t* data = emCARD + blockNum * 16;
 604
 605         if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
 606                         (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||
 607                         (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||
 608                         (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||
 609                         (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||
 610                         (data[12] != (data[15] ^ 0xff))
 611                  )
 612                 return 1;
 613         return 0;
 614 }
 615
 616 int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
 617         uint8_t* emCARD = BigBuf_get_EM_addr();
 618         uint8_t* data = emCARD + blockNum * 16;
 619
 620         if (emlCheckValBl(blockNum)) {
 621                 return 1;
 622         }
 623
 624         memcpy(blReg, data, 4);
 625         *blBlock = data[12];
 626         return 0;
 627 }
 628
 629 int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
 630         uint8_t* emCARD = BigBuf_get_EM_addr();
 631         uint8_t* data = emCARD + blockNum * 16;
 632
 633         memcpy(data + 0, &blReg, 4);
 634         memcpy(data + 8, &blReg, 4);
 635         blReg = blReg ^ 0xffffffff;
 636         memcpy(data + 4, &blReg, 4);
 637
 638         data[12] = blBlock;
 639         data[13] = blBlock ^ 0xff;
 640         data[14] = blBlock;
 641         data[15] = blBlock ^ 0xff;
 642
 643         return 0;
 644 }
 645
 646 uint64_t emlGetKey(int sectorNum, int keyType) {
 647         uint8_t key[6];
 648         uint8_t* emCARD = BigBuf_get_EM_addr();
 649
 650         memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
 651         return bytes_to_num(key, 6);
 652 }
 653
 654 void emlClearMem(void) {
 655         int b;
 656
 657         const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 658         const uint8_t uid[]   =   {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
 659         uint8_t* emCARD = BigBuf_get_EM_addr();
 660
 661         memset(emCARD, 0, CARD_MEMORY_SIZE);
 662
 663         // fill sectors trailer data
 664         for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {
 665                 emlSetMem((uint8_t *)trailer, b , 1);
 666         }
 667
 668         // uid
 669         emlSetMem((uint8_t *)uid, 0, 1);
 670         return;
 671 }
 672
 673
 674 // Mifare desfire commands
 675 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)
 676 {
 677     uint8_t dcmd[5] = {0x00};
 678     dcmd[0] = cmd;
 679     memcpy(dcmd+1,data,2);
 680         AppendCrc14443a(dcmd, 3);
 681
 682         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 683         int len = ReaderReceive(answer, answer_parity);
 684         if(!len) {
 685                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 686                         Dbprintf("Authentication failed. Card timeout.");
 687                 return 1;
 688     }
 689         return len;
 690 }
 691
 692 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)
 693 {
 694     uint8_t dcmd[20] = {0x00};
 695     dcmd[0] = cmd;
 696     memcpy(dcmd+1,data,17);
 697         AppendCrc14443a(dcmd, 18);
 698
 699         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 700         int len = ReaderReceive(answer, answer_parity);
 701         if(!len){
 702         if (MF_DBGLEVEL >= MF_DBG_ERROR)
 703                         Dbprintf("Authentication failed. Card timeout.");
 704                 return 1;
 705     }
 706         return len;
 707 }
 708
 709 int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){
 710
 711         int len;
 712         // load key, keynumber
 713         uint8_t data[2]={0x0a, 0x00};
 714         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 715         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 716
 717         len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);
 718         if (len == 1) {
 719                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 720                         Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 721                 return 1;
 722         }
 723
 724         if (len == 12) {
 725                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED)     {
 726                         Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 727                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 728                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 729                                 receivedAnswer[10],receivedAnswer[11]);
 730                         }
 731                         memcpy(blockData, receivedAnswer, 12);
 732                 return 0;
 733         }
 734         return 1;
 735 }
 736
 737 int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
 738
 739         int len;
 740         uint8_t data[17] = {0x00};
 741         data[0] = 0xAF;
 742         memcpy(data+1,key,16);
 743
 744         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 745         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 746
 747         len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);
 748
 749         if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {
 750                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 751                         Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);
 752                 return 1;
 753         }
 754
 755         if (len == 12){
 756                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 757                         Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 758                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 759                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 760                                 receivedAnswer[10],receivedAnswer[11]);
 761                         }
 762                 memcpy(blockData, receivedAnswer, 12);
 763                 return 0;
 764         }
 765         return 1;
 766 }