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 <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_decryptEx(struct Crypto1State *pcs, uint8_t *data_in, int len, uint8_t *data_out){
  28         uint8_t bt = 0;
  29         int i;
  30
  31         if (len != 1) {
  32                 for (i = 0; i < len; i++)
  33                         data_out[i] = crypto1_byte(pcs, 0x00, 0) ^ data_in[i];
  34         } else {
  35                 bt = 0;
  36                 for (i = 0; i < 4; i++)
  37                         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data_in[0], i)) << i;
  38
  39                 data_out[0] = bt;
  40         }
  41         return;
  42 }
  43
  44 void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){
  45         mf_crypto1_decryptEx(pcs, data, len, data);
  46 }
  47
  48 void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {
  49         uint8_t bt = 0;
  50         int i;
  51         par[0] = 0;
  52
  53         for (i = 0; i < len; i++) {
  54                 bt = data[i];
  55                 data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
  56                 if((i&0x0007) == 0)
  57                         par[i>>3] = 0;
  58                 par[i>>3] |= (((filter(pcs->odd) ^ oddparity8(bt)) & 0x01)<<(7-(i&0x0007)));
  59         }
  60         return;
  61 }
  62
  63 uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {
  64         uint8_t bt = 0;
  65         int i;
  66
  67         for (i = 0; i < 4; i++)
  68                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, i)) << i;
  69
  70         return bt;
  71 }
  72
  73 // send X byte basic commands
  74 int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)
  75 {
  76         uint8_t dcmd[data_size+3];
  77         dcmd[0] = cmd;
  78         memcpy(dcmd+1,data,data_size);
  79         AppendCrc14443a(dcmd, data_size+1);
  80         ReaderTransmit(dcmd, sizeof(dcmd), timing);
  81         int len = ReaderReceive(answer, answer_parity);
  82         if(!len) {
  83                 if (MF_DBGLEVEL >= MF_DBG_ERROR)   Dbprintf("%02X Cmd failed. Card timeout.", cmd);
  84                         len = ReaderReceive(answer,answer_parity);
  85                 //return 0;
  86         }
  87         return len;
  88 }
  89
  90 // send 2 byte commands
  91 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)
  92 {
  93         uint8_t dcmd[4], ecmd[4];
  94         uint16_t pos, res;
  95         uint8_t par[1];                 // 1 Byte parity is enough here
  96         dcmd[0] = cmd;
  97         dcmd[1] = data;
  98         AppendCrc14443a(dcmd, 2);
  99
 100         memcpy(ecmd, dcmd, sizeof(dcmd));
 101
 102         if (crypted) {
 103                 par[0] = 0;
 104                 for (pos = 0; pos < 4; pos++)
 105                 {
 106                         ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];
 107                         par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos));
 108                 }
 109
 110                 ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);
 111
 112         } else {
 113                 ReaderTransmit(dcmd, sizeof(dcmd), timing);
 114         }
 115
 116         int len = ReaderReceive(answer, par);
 117
 118         if (answer_parity) *answer_parity = par[0];
 119
 120         if (crypted == CRYPT_ALL) {
 121                 if (len == 1) {
 122                         res = 0;
 123                         for (pos = 0; pos < 4; pos++)
 124                                 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], pos)) << pos;
 125
 126                         answer[0] = res;
 127
 128                 } else {
 129                         for (pos = 0; pos < len; pos++)
 130                         {
 131                                 answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];
 132                         }
 133                 }
 134         }
 135
 136         return len;
 137 }
 138
 139 // mifare classic commands
 140 int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested)
 141 {
 142         return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);
 143 }
 144
 145 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)
 146 {
 147         // variables
 148         int len;
 149         uint32_t pos;
 150         uint8_t tmp4[4];
 151         uint8_t par[1] = {0x00};
 152         byte_t nr[4];
 153         uint32_t nt, ntpp; // Supplied tag nonce
 154
 155         uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
 156         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 157         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 158
 159         // Transmit MIFARE_CLASSIC_AUTH
 160         len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);
 161         if (MF_DBGLEVEL >= 4)   Dbprintf("rand tag nonce len: %x", len);
 162         if (len != 4) return 1;
 163
 164         // "random" reader nonce:
 165         nr[0] = 0x55;
 166         nr[1] = 0x41;
 167         nr[2] = 0x49;
 168         nr[3] = 0x92;
 169
 170         // Save the tag nonce (nt)
 171         nt = bytes_to_num(receivedAnswer, 4);
 172
 173         //  ----------------------------- crypto1 create
 174         if (isNested)
 175                 crypto1_destroy(pcs);
 176
 177         // Init cipher with key
 178         crypto1_create(pcs, ui64Key);
 179
 180         if (isNested == AUTH_NESTED) {
 181                 // decrypt nt with help of new key
 182                 nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;
 183         } else {
 184                 // Load (plain) uid^nt into the cipher
 185                 crypto1_word(pcs, nt ^ uid, 0);
 186         }
 187
 188         // some statistic
 189         if (!ntptr && (MF_DBGLEVEL >= 3))
 190                 Dbprintf("auth uid: %08x nt: %08x", uid, nt);
 191
 192         // save Nt
 193         if (ntptr)
 194                 *ntptr = nt;
 195
 196         // Generate (encrypted) nr+parity by loading it into the cipher (Nr)
 197         par[0] = 0;
 198         for (pos = 0; pos < 4; pos++)
 199         {
 200                 mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];
 201                 par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));
 202         }
 203
 204         // Skip 32 bits in pseudo random generator
 205         nt = prng_successor(nt,32);
 206
 207         //  ar+parity
 208         for (pos = 4; pos < 8; pos++)
 209         {
 210                 nt = prng_successor(nt,8);
 211                 mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);
 212                 par[0] |= (((filter(pcs->odd) ^ oddparity8(nt)) & 0x01) << (7-pos));
 213         }
 214
 215         // Transmit reader nonce and reader answer
 216         ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);
 217
 218         // Receive 4 byte tag answer
 219         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 220         if (!len)
 221         {
 222                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Card timeout.");
 223                 return 2;
 224         }
 225
 226         memcpy(tmp4, receivedAnswer, 4);
 227         ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);
 228
 229         if (ntpp != bytes_to_num(tmp4, 4)) {
 230                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Error card response.");
 231                 return 3;
 232         }
 233
 234         return 0;
 235 }
 236
 237 int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
 238 {
 239         // variables
 240         int len;
 241         uint8_t bt[2];
 242
 243         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 244         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 245
 246         // command MIFARE_CLASSIC_READBLOCK
 247         len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 248         if (len == 1) {
 249                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 250                 return 1;
 251         }
 252         if (len != 18) {
 253                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: card timeout. len: %x", len);
 254                 return 2;
 255         }
 256
 257         memcpy(bt, receivedAnswer + 16, 2);
 258         AppendCrc14443a(receivedAnswer, 16);
 259         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 260                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd CRC response error.");
 261                 return 3;
 262         }
 263
 264         memcpy(blockData, receivedAnswer, 16);
 265         return 0;
 266 }
 267
 268 // mifare ultralight commands
 269 int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){
 270
 271         uint16_t len;
 272         uint8_t resp[4];
 273         uint8_t respPar[1];
 274         uint8_t key[4] = {0x00};
 275         memcpy(key, keybytes, 4);
 276
 277         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 278                 Dbprintf("EV1 Auth : %02x%02x%02x%02x", key[0], key[1], key[2], key[3]);
 279         len = mifare_sendcmd(0x1B, key, sizeof(key), resp, respPar, NULL);
 280         //len = mifare_sendcmd_short_mfuev1auth(NULL, 0, 0x1B, key, resp, respPar, NULL);
 281         if (len != 4) {
 282                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);
 283                 return 0;
 284         }
 285
 286         if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
 287                 Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);
 288
 289         memcpy(pack, resp, 4);
 290         return 1;
 291 }
 292
 293 int mifare_ultra_auth(uint8_t *keybytes){
 294
 295         /// 3des2k
 296
 297         des3_context ctx = { 0x00 };
 298         uint8_t random_a[8] = {1,1,1,1,1,1,1,1};
 299         uint8_t random_b[8] = {0x00};
 300         uint8_t enc_random_b[8] = {0x00};
 301         uint8_t rnd_ab[16] = {0x00};
 302         uint8_t IV[8] = {0x00};
 303         uint8_t key[16] = {0x00};
 304         memcpy(key, keybytes, 16);
 305
 306         uint16_t len;
 307         uint8_t resp[19] = {0x00};
 308         uint8_t respPar[3] = {0,0,0};
 309
 310         // REQUEST AUTHENTICATION
 311         len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, resp, respPar ,NULL);
 312         if (len != 11) {
 313                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 314                 return 0;
 315         }
 316
 317         // tag nonce.
 318         memcpy(enc_random_b,resp+1,8);
 319
 320         // decrypt nonce.
 321         // tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );
 322         des3_set2key_dec(&ctx, key);
 323         des3_crypt_cbc(&ctx     // des3_context
 324                 , DES_DECRYPT           // int mode
 325                 , sizeof(random_b)      // length
 326                 , IV                    // iv[8]
 327                 , enc_random_b          // input
 328                 , random_b                      // output
 329                 );
 330
 331         rol(random_b,8);
 332         memcpy(rnd_ab  ,random_a,8);
 333         memcpy(rnd_ab+8,random_b,8);
 334
 335         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 336                 Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",
 337                         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]);
 338
 339                 Dbprintf("    B: %02x %02x %02x %02x %02x %02x %02x %02x",
 340                         random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);
 341
 342                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 343                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 344
 345                 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
 346                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );
 347         }
 348
 349         // encrypt    out, in, length, key, iv
 350         //tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
 351         des3_set2key_enc(&ctx, key);
 352         des3_crypt_cbc(&ctx     // des3_context
 353                 , DES_ENCRYPT           // int mode
 354                 , sizeof(rnd_ab)        // length
 355                 , enc_random_b          // iv[8]
 356                 , rnd_ab                        // input
 357                 , rnd_ab                        // output
 358                 );
 359
 360         //len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, resp, respPar, NULL);
 361         len = mifare_sendcmd(0xAF, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL);
 362         if (len != 11) {
 363                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
 364                 return 0;
 365         }
 366
 367         uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };
 368         uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };
 369         memcpy(enc_resp, resp+1, 8);
 370
 371         // decrypt    out, in, length, key, iv
 372         // tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
 373         des3_set2key_dec(&ctx, key);
 374         des3_crypt_cbc(&ctx     // des3_context
 375                 , DES_DECRYPT           // int mode
 376                 , 8                                     // length
 377                 , enc_random_b          // iv[8]
 378                 , enc_resp                      // input
 379                 , resp_random_a         // output
 380                 );
 381         if ( memcmp(resp_random_a, random_a, 8) != 0 ) {
 382                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");
 383                 return 0;
 384         }
 385
 386         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 387                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 388                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],
 389                                 rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
 390
 391                 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
 392                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],
 393                                 rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);
 394
 395                 Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",
 396                                 random_a[0],random_a[1],random_a[2],random_a[3],
 397                                 random_a[4],random_a[5],random_a[6],random_a[7]);
 398
 399                 Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",
 400                                 resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],
 401                                 resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);
 402         }
 403         return 1;
 404 }
 405
 406 int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData)
 407 {
 408         uint16_t len;
 409         uint8_t bt[2];
 410         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 411         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 412
 413
 414         len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 415         if (len == 1) {
 416                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 417                 return 1;
 418         }
 419         if (len != 18) {
 420                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);
 421                 return 2;
 422         }
 423
 424         memcpy(bt, receivedAnswer + 16, 2);
 425         AppendCrc14443a(receivedAnswer, 16);
 426         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
 427                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");
 428                 return 3;
 429         }
 430
 431         memcpy(blockData, receivedAnswer, 14);
 432         return 0;
 433 }
 434
 435 int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
 436 {
 437         // variables
 438         uint16_t len, i;
 439         uint32_t pos;
 440         uint8_t par[3] = {0};           // enough for 18 Bytes to send
 441         byte_t res;
 442
 443         uint8_t d_block[18], d_block_enc[18];
 444         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 445         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 446
 447         // command MIFARE_CLASSIC_WRITEBLOCK
 448         len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 449
 450         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 451                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 452                 return 1;
 453         }
 454
 455         memcpy(d_block, blockData, 16);
 456         AppendCrc14443a(d_block, 16);
 457
 458         // crypto
 459         for (pos = 0; pos < 18; pos++)
 460         {
 461                 d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
 462                 par[pos>>3] |= (((filter(pcs->odd) ^ oddparity8(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));
 463         }
 464
 465         ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
 466
 467         // Receive the response
 468         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 469
 470         res = 0;
 471         for (i = 0; i < 4; i++)
 472                 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;
 473
 474         if ((len != 1) || (res != 0x0A)) {
 475                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd send data2 Error: %02x", res);
 476                 return 2;
 477         }
 478
 479         return 0;
 480 }
 481
 482 /* // command not needed, but left for future testing
 483 int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData)
 484 {
 485         uint16_t len;
 486         uint8_t par[3] = {0};  // enough for 18 parity bits
 487         uint8_t d_block[18] = {0x00};
 488         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 489         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 490
 491         len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 492
 493         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 494                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 495                         Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
 496                 return 1;
 497         }
 498
 499         memcpy(d_block, blockData, 16);
 500         AppendCrc14443a(d_block, 16);
 501
 502         ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
 503
 504         len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 505
 506         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 507                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 508                         Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
 509                 return 2;
 510         }
 511         return 0;
 512 }
 513 */
 514
 515 int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData)
 516 {
 517         uint16_t len;
 518         uint8_t d_block[5] = {0x00};
 519         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 520         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 521
 522         // command MIFARE_CLASSIC_WRITEBLOCK
 523         d_block[0]= blockNo;
 524         memcpy(d_block+1,blockData,4);
 525         //AppendCrc14443a(d_block, 6);
 526
 527         len = mifare_sendcmd(0xA2, d_block, sizeof(d_block), receivedAnswer, receivedAnswerPar, NULL);
 528
 529         if (receivedAnswer[0] != 0x0A) {   //  0x0a - ACK
 530                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 531                         Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
 532                 return 1;
 533         }
 534         return 0;
 535 }
 536
 537 int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)
 538 {
 539         uint16_t len;
 540         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 541         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 542
 543         len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 544         if (len != 0) {
 545                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 546                         Dbprintf("halt error. response len: %x", len);
 547                 return 1;
 548         }
 549
 550         return 0;
 551 }
 552
 553 int mifare_ultra_halt()
 554 {
 555         uint16_t len;
 556         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 557         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 558
 559         len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 560         if (len != 0) {
 561                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 562                         Dbprintf("halt error. response len: %x", len);
 563                 return 1;
 564         }
 565         return 0;
 566 }
 567
 568
 569 // Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),
 570 // plus evtl. 8 sectors with 16 blocks each (4k cards)
 571 uint8_t NumBlocksPerSector(uint8_t sectorNo)
 572 {
 573         if (sectorNo < 32)
 574                 return 4;
 575         else
 576                 return 16;
 577 }
 578
 579 uint8_t FirstBlockOfSector(uint8_t sectorNo)
 580 {
 581         if (sectorNo < 32)
 582                 return sectorNo * 4;
 583         else
 584                 return 32*4 + (sectorNo - 32) * 16;
 585
 586 }
 587
 588
 589 // work with emulator memory
 590 void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
 591         uint8_t* emCARD = BigBuf_get_EM_addr();
 592         memcpy(emCARD + blockNum * 16, data, blocksCount * 16);
 593 }
 594
 595 void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {
 596         uint8_t* emCARD = BigBuf_get_EM_addr();
 597         memcpy(data, emCARD + blockNum * 16, blocksCount * 16);
 598 }
 599
 600 void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
 601         uint8_t* emCARD = BigBuf_get_EM_addr();
 602         memcpy(data, emCARD + bytePtr, byteCount);
 603 }
 604
 605 int emlCheckValBl(int blockNum) {
 606         uint8_t* emCARD = BigBuf_get_EM_addr();
 607         uint8_t* data = emCARD + blockNum * 16;
 608
 609         if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
 610                         (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||
 611                         (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||
 612                         (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||
 613                         (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||
 614                         (data[12] != (data[15] ^ 0xff))
 615                  )
 616                 return 1;
 617         return 0;
 618 }
 619
 620 int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
 621         uint8_t* emCARD = BigBuf_get_EM_addr();
 622         uint8_t* data = emCARD + blockNum * 16;
 623
 624         if (emlCheckValBl(blockNum)) {
 625                 return 1;
 626         }
 627
 628         memcpy(blReg, data, 4);
 629         *blBlock = data[12];
 630         return 0;
 631 }
 632
 633 int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
 634         uint8_t* emCARD = BigBuf_get_EM_addr();
 635         uint8_t* data = emCARD + blockNum * 16;
 636
 637         memcpy(data + 0, &blReg, 4);
 638         memcpy(data + 8, &blReg, 4);
 639         blReg = blReg ^ 0xffffffff;
 640         memcpy(data + 4, &blReg, 4);
 641
 642         data[12] = blBlock;
 643         data[13] = blBlock ^ 0xff;
 644         data[14] = blBlock;
 645         data[15] = blBlock ^ 0xff;
 646
 647         return 0;
 648 }
 649
 650 uint64_t emlGetKey(int sectorNum, int keyType) {
 651         uint8_t key[6];
 652         uint8_t* emCARD = BigBuf_get_EM_addr();
 653
 654         memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
 655         return bytes_to_num(key, 6);
 656 }
 657
 658 void emlClearMem(void) {
 659         int b;
 660
 661         const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 662         const uint8_t uid[]   =   {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
 663         uint8_t* emCARD = BigBuf_get_EM_addr();
 664
 665         memset(emCARD, 0, CARD_MEMORY_SIZE);
 666
 667         // fill sectors trailer data
 668         for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {
 669                 emlSetMem((uint8_t *)trailer, b , 1);
 670         }
 671
 672         // uid
 673         emlSetMem((uint8_t *)uid, 0, 1);
 674         return;
 675 }
 676
 677
 678 // Mifare desfire commands
 679 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)
 680 {
 681     uint8_t dcmd[5] = {0x00};
 682     dcmd[0] = cmd;
 683     memcpy(dcmd+1,data,2);
 684         AppendCrc14443a(dcmd, 3);
 685
 686         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 687         int len = ReaderReceive(answer, answer_parity);
 688         if(!len) {
 689                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 690                         Dbprintf("Authentication failed. Card timeout.");
 691                 return 1;
 692     }
 693         return len;
 694 }
 695
 696 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)
 697 {
 698     uint8_t dcmd[20] = {0x00};
 699     dcmd[0] = cmd;
 700     memcpy(dcmd+1,data,17);
 701         AppendCrc14443a(dcmd, 18);
 702
 703         ReaderTransmit(dcmd, sizeof(dcmd), NULL);
 704         int len = ReaderReceive(answer, answer_parity);
 705         if(!len){
 706         if (MF_DBGLEVEL >= MF_DBG_ERROR)
 707                         Dbprintf("Authentication failed. Card timeout.");
 708                 return 1;
 709     }
 710         return len;
 711 }
 712
 713 int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){
 714
 715         int len;
 716         // load key, keynumber
 717         uint8_t data[2]={0x0a, 0x00};
 718         uint8_t receivedAnswer[MAX_FRAME_SIZE];
 719         uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 720
 721         len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);
 722         if (len == 1) {
 723                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 724                         Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 725                 return 1;
 726         }
 727
 728         if (len == 12) {
 729                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED)     {
 730                         Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 731                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 732                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 733                                 receivedAnswer[10],receivedAnswer[11]);
 734                         }
 735                         memcpy(blockData, receivedAnswer, 12);
 736                 return 0;
 737         }
 738         return 1;
 739 }
 740
 741 int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
 742
 743         int len;
 744         uint8_t data[17] = {0x00};
 745         data[0] = 0xAF;
 746         memcpy(data+1,key,16);
 747
 748         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 749         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 750
 751         len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);
 752
 753         if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {
 754                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
 755                         Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);
 756                 return 1;
 757         }
 758
 759         if (len == 12){
 760                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
 761                         Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 762                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
 763                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
 764                                 receivedAnswer[10],receivedAnswer[11]);
 765                         }
 766                 memcpy(blockData, receivedAnswer, 12);
 767                 return 0;
 768         }
 769         return 1;
 770 }
 771
 772 //-----------------------------------------------------------------------------
 773 // MIFARE check keys
 774 //
 775 //-----------------------------------------------------------------------------
 776 // one key check
 777 int MifareChkBlockKey(uint8_t *uid, uint32_t *cuid, uint8_t *cascade_levels, uint64_t ui64Key, uint8_t blockNo, uint8_t keyType, uint8_t debugLevel) {
 778
 779         struct Crypto1State mpcs = {0, 0};
 780         struct Crypto1State *pcs;
 781         pcs = &mpcs;
 782
 783         // Iceman: use piwi's faster nonce collecting part in hardnested.
 784         if (*cascade_levels == 0) { // need a full select cycle to get the uid first
 785                 iso14a_card_select_t card_info;
 786                 if(!iso14443a_select_card(uid, &card_info, cuid, true, 0, true)) {
 787                         if (debugLevel >= 1)    Dbprintf("ChkKeys: Can't select card");
 788                         return  1;
 789                 }
 790                 switch (card_info.uidlen) {
 791                         case 4 : *cascade_levels = 1; break;
 792                         case 7 : *cascade_levels = 2; break;
 793                         case 10: *cascade_levels = 3; break;
 794                         default: break;
 795                 }
 796         } else { // no need for anticollision. We can directly select the card
 797                 if(!iso14443a_select_card(uid, NULL, NULL, false, *cascade_levels, true)) {
 798                         if (debugLevel >= 1)    Dbprintf("ChkKeys: Can't select card (UID) lvl=%d", *cascade_levels);
 799                         return  1;
 800                 }
 801         }
 802
 803         if(mifare_classic_auth(pcs, *cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 804 //              SpinDelayUs(AUTHENTICATION_TIMEOUT); // it not needs because mifare_classic_auth have timeout from iso14a_set_timeout()
 805                 return 2;
 806         } else {
 807 /*              // let it be here. it like halt command, but maybe it will work in some strange cases
 808                 uint8_t dummy_answer = 0;
 809                 ReaderTransmit(&dummy_answer, 1, NULL);
 810                 int timeout = GetCountSspClk() + AUTHENTICATION_TIMEOUT;
 811                 // wait for the card to become ready again
 812                 while(GetCountSspClk() < timeout) {};
 813 */
 814                 // it needs after success authentication
 815                 mifare_classic_halt(pcs, *cuid);
 816         }
 817
 818         return 0;
 819 }
 820
 821 // multi key check
 822 int MifareChkBlockKeys(uint8_t *keys, uint8_t keyCount, uint8_t blockNo, uint8_t keyType, uint8_t debugLevel) {
 823         uint8_t uid[10];
 824         uint32_t cuid = 0;
 825         uint8_t cascade_levels = 0;
 826         uint64_t ui64Key = 0;
 827
 828         int retryCount = 0;
 829         for (uint8_t i = 0; i < keyCount; i++) {
 830
 831                 // Allow button press / usb cmd to interrupt device
 832                 if (BUTTON_PRESS() && !usb_poll_validate_length()) {
 833                         Dbprintf("ChkKeys: Cancel operation. Exit...");
 834                         return -2;
 835                 }
 836
 837                 ui64Key = bytes_to_num(keys + i * 6, 6);
 838                 int res = MifareChkBlockKey(uid, &cuid, &cascade_levels, ui64Key, blockNo, keyType, debugLevel);
 839
 840                 // can't select
 841                 if (res == 1) {
 842                         retryCount++;
 843                         if (retryCount >= 5) {
 844                                 Dbprintf("ChkKeys: block=%d key=%d. Can't select. Exit...", blockNo, keyType);
 845                                 return -1;
 846                         }
 847                         --i; // try the same key once again
 848
 849                         SpinDelay(20);
 850 //                      Dbprintf("ChkKeys: block=%d key=%d. Try the same key once again...", blockNo, keyType);
 851                         continue;
 852                 }
 853
 854                 // can't authenticate
 855                 if (res == 2) {
 856                         retryCount = 0;
 857                         continue; // can't auth. wrong key.
 858                 }
 859
 860                 return i + 1;
 861         }
 862
 863         return 0;
 864 }
 865
 866 // multisector multikey check
 867 int MifareMultisectorChk(uint8_t *keys, uint8_t keyCount, uint8_t SectorCount, uint8_t keyType, uint8_t debugLevel, TKeyIndex *keyIndex) {
 868         int res = 0;
 869
 870 //      int clk = GetCountSspClk();
 871
 872         for(int sc = 0; sc < SectorCount; sc++){
 873                 WDT_HIT();
 874
 875                 int keyAB = keyType;
 876                 do {
 877                         res = MifareChkBlockKeys(keys, keyCount, FirstBlockOfSector(sc), keyAB & 0x01, debugLevel);
 878                         if (res < 0){
 879                                 return res;
 880                         }
 881                         if (res > 0){
 882                                 (*keyIndex)[keyAB & 0x01][sc] = res;
 883                         }
 884                 } while(--keyAB > 0);
 885         }
 886
 887 //      Dbprintf("%d %d", GetCountSspClk() - clk, (GetCountSspClk() - clk)/(SectorCount*keyCount*(keyType==2?2:1)));
 888
 889         return 0;
 890 }
 891
 892