cvs.zerfleddert.de Git - proxmark3-svn/blob - armsrc/mifaredesfire.c

   1 #include "mifaredesfire.h"
   2 #include "BigBuf.h"
   3
   4 #define MAX_APPLICATION_COUNT 28
   5 #define MAX_FILE_COUNT 16
   6 #define MAX_DESFIRE_FRAME_SIZE 60
   7 #define NOT_YET_AUTHENTICATED 255
   8 #define FRAME_PAYLOAD_SIZE (MAX_DESFIRE_FRAME_SIZE - 5)
   9 #define RECEIVE_SIZE 64
  10
  11 // the block number for the ISO14443-4 PCB
  12 uint8_t pcb_blocknum = 0;
  13 // Deselect card by sending a s-block. the crc is precalced for speed
  14 static  uint8_t deselect_cmd[] = {0xc2,0xe0,0xb4};
  15
  16 //static uint8_t __msg[MAX_FRAME_SIZE] = { 0x0A, 0x00, 0x00, /* ..., */ 0x00 };
  17 /*                                       PCB   CID   CMD    PAYLOAD    */
  18 //static uint8_t __res[MAX_FRAME_SIZE];
  19
  20 bool InitDesfireCard(){
  21
  22         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  23         set_tracing(TRUE);
  24
  25         byte_t cardbuf[USB_CMD_DATA_SIZE] = {0x00};
  26         iso14a_card_select_t *card = (iso14a_card_select_t*)cardbuf;
  27
  28         int len = iso14443a_select_card(NULL,card,NULL);
  29
  30         if (!len) {
  31                 if (MF_DBGLEVEL >= MF_DBG_ERROR)
  32                         Dbprintf("Can't select card");
  33                 OnError(1);
  34                 return false;
  35         }
  36         return true;
  37 }
  38
  39 // ARG0 flag enums
  40 enum  {
  41  NONE           =       0x00,
  42  INIT           =       0x01,
  43  DISCONNECT =   0x02,
  44  CLEARTRACE     =       0x04,
  45  BAR            =       0x08,
  46 } CmdOptions ;
  47
  48 void MifareSendCommand(uint8_t arg0, uint8_t arg1, uint8_t *datain){
  49
  50         /* ARG0 contains flags.
  51                 0x01 = init card.
  52                 0x02 = Disconnect
  53                 0x03
  54         */
  55         uint8_t flags = arg0;
  56         size_t datalen = arg1;
  57         uint8_t resp[RECEIVE_SIZE];
  58         memset(resp,0,sizeof(resp));
  59
  60         if (MF_DBGLEVEL >= 4) {
  61                 Dbprintf(" flags : %02X", flags);
  62                 Dbprintf(" len   : %02X", datalen);
  63                 print_result(" RX    : ", datain, datalen);
  64         }
  65
  66         if ( flags & CLEARTRACE ){
  67                 clear_trace();
  68         }
  69
  70         if ( flags & INIT ){
  71                 if ( !InitDesfireCard() )
  72                         return;
  73         }
  74
  75         int len = DesfireAPDU(datain, datalen, resp);
  76         if (MF_DBGLEVEL >= 4) {
  77                 print_result("ERR <--: ", resp, len);
  78         }
  79
  80         if ( !len ) {
  81                 OnError(2);
  82                 return;
  83         }
  84
  85         // reset the pcb_blocknum,
  86         pcb_blocknum = 0;
  87
  88         if ( flags & DISCONNECT ){
  89                 OnSuccess();
  90         }
  91
  92         cmd_send(CMD_ACK,1,len,0,resp,len);
  93 }
  94
  95 void MifareDesfireGetInformation(){
  96
  97         int len = 0;
  98         uint8_t resp[USB_CMD_DATA_SIZE] = {0x00};
  99         uint8_t dataout[USB_CMD_DATA_SIZE] = {0x00};
 100         byte_t cardbuf[USB_CMD_DATA_SIZE] = {0x00};
 101
 102         /*
 103                 1 = PCB                                 1
 104                 2 = cid                                 2
 105                 3 = desfire command             3
 106                 4-5 = crc                               4  key
 107                                                                 5-6 crc
 108                 PCB == 0x0A because sending CID byte.
 109                 CID == 0x00 first card?
 110         */
 111         clear_trace();
 112         set_tracing(TRUE);
 113         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 114
 115         // card select - information
 116         iso14a_card_select_t *card = (iso14a_card_select_t*)cardbuf;
 117         byte_t isOK = iso14443a_select_card(NULL, card, NULL);
 118         if ( isOK == 0) {
 119                 if (MF_DBGLEVEL >= MF_DBG_ERROR) {
 120                         Dbprintf("Can't select card");
 121                 }
 122                 OnError(1);
 123                 return;
 124         }
 125
 126         memcpy(dataout,card->uid,7);
 127
 128         LED_A_ON();
 129         LED_B_OFF();
 130         LED_C_OFF();
 131
 132         uint8_t cmd[] = {GET_VERSION};
 133         size_t cmd_len = sizeof(cmd);
 134
 135         len =  DesfireAPDU(cmd, cmd_len, resp);
 136         if ( !len ) {
 137                 print_result("ERROR <--: ", resp, len);
 138                 OnError(2);
 139                 return;
 140         }
 141
 142         LED_A_OFF();
 143         LED_B_ON();
 144         memcpy(dataout+7,resp+3,7);
 145
 146         // ADDITION_FRAME 1
 147         cmd[0] = ADDITIONAL_FRAME;
 148         len =  DesfireAPDU(cmd, cmd_len, resp);
 149         if ( !len ) {
 150                 print_result("ERROR <--: ", resp, len);
 151                 OnError(2);
 152                 return;
 153         }
 154
 155         LED_B_OFF();
 156         LED_C_ON();
 157         memcpy(dataout+7+7,resp+3,7);
 158
 159         // ADDITION_FRAME 2
 160         len =  DesfireAPDU(cmd, cmd_len, resp);
 161         if ( !len ) {
 162                 print_result("ERROR <--: ", resp, len);
 163                 OnError(2);
 164                 return;
 165         }
 166
 167         memcpy(dataout+7+7+7,resp+3,14);
 168
 169         cmd_send(CMD_ACK,1,0,0,dataout,sizeof(dataout));
 170
 171         // reset the pcb_blocknum,
 172         pcb_blocknum = 0;
 173         OnSuccess();
 174 }
 175
 176 void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno,  uint8_t *datain){
 177
 178         int len = 0;
 179         //uint8_t PICC_MASTER_KEY8[8] = { 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47};
 180         uint8_t PICC_MASTER_KEY16[16] = { 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f };
 181         uint8_t null_key_data8[8] = {0x00};
 182         //uint8_t null_key_data16[16] = {0x00};
 183         //uint8_t new_key_data8[8]  = { 0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77};
 184         //uint8_t new_key_data16[16]  = { 0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF};
 185
 186         uint8_t resp[256] = {0x00};
 187         uint8_t IV[16] = {0x00};
 188
 189         size_t datalen = datain[0];
 190
 191         uint8_t cmd[40] = {0x00};
 192         uint8_t encRndB[16] = {0x00};
 193         uint8_t decRndB[16] = {0x00};
 194         uint8_t nonce[16] = {0x00};
 195         uint8_t both[32] = {0x00};
 196         uint8_t encBoth[32] = {0x00};
 197
 198         InitDesfireCard();
 199
 200         LED_A_ON();
 201         LED_B_OFF();
 202         LED_C_OFF();
 203
 204         // 3 olika sätt att authenticera.   AUTH (CRC16) , AUTH_ISO (CRC32) , AUTH_AES (CRC32)
 205         // 4 olika crypto algo   DES, 3DES, 3K3DES, AES
 206         // 3 olika kommunikations sätt,   PLAIN,MAC,CRYPTO
 207
 208         // des, nyckel 0,
 209         switch (mode){
 210         case 1:{
 211             uint8_t keybytes[16];
 212             uint8_t RndA[8] = {0x00};
 213             uint8_t RndB[8] = {0x00};
 214
 215             if (algo == 2) {
 216             if (datain[1] == 0xff){
 217                     memcpy(keybytes,PICC_MASTER_KEY16,16);
 218                 } else {
 219                     memcpy(keybytes, datain+1, datalen);
 220                 }
 221             } else {
 222                 if (algo == 1) {
 223                     if (datain[1] == 0xff){
 224                 memcpy(keybytes,null_key_data8,8);
 225             } else{
 226                 memcpy(keybytes, datain+1, datalen);
 227             }
 228                 }
 229             }
 230
 231             struct desfire_key defaultkey = {0};
 232             desfirekey_t key = &defaultkey;
 233
 234             if (algo == 2)
 235                 Desfire_3des_key_new_with_version(keybytes, key);
 236             else if (algo ==1)
 237             Desfire_des_key_new(keybytes, key);
 238
 239             cmd[0] = AUTHENTICATE;
 240             cmd[1] = keyno;  //keynumber
 241             len = DesfireAPDU(cmd, 2, resp);
 242             if ( !len ) {
 243                 if (MF_DBGLEVEL >= MF_DBG_ERROR) {
 244                     DbpString("Authentication failed. Card timeout.");
 245                 }
 246                 OnError(3);
 247                 return;
 248             }
 249
 250             if ( resp[2] == 0xaf ){
 251             } else {
 252                 DbpString("Authetication failed. Invalid key number.");
 253                 OnError(3);
 254                 return;
 255             }
 256
 257             memcpy( encRndB, resp+3, 8);
 258             if (algo == 2)
 259                 tdes_dec(&decRndB, &encRndB, key->data);
 260             else if (algo == 1)
 261             des_dec(&decRndB, &encRndB, key->data);
 262
 263             memcpy(RndB, decRndB, 8);
 264             rol(decRndB,8);
 265
 266             // This should be random
 267             uint8_t decRndA[8] = {0x00};
 268             memcpy(RndA, decRndA, 8);
 269             uint8_t encRndA[8] = {0x00};
 270
 271             if (algo == 2)
 272                 tdes_dec(&encRndA, &decRndA, key->data);
 273             else if (algo == 1)
 274             des_dec(&encRndA, &decRndA, key->data);
 275
 276             memcpy(both, encRndA, 8);
 277
 278             for (int x = 0; x < 8; x++) {
 279                 decRndB[x] = decRndB[x] ^ encRndA[x];
 280
 281             }
 282
 283             if (algo == 2)
 284                 tdes_dec(&encRndB, &decRndB, key->data);
 285             else if (algo == 1)
 286             des_dec(&encRndB, &decRndB, key->data);
 287
 288             memcpy(both + 8, encRndB, 8);
 289
 290             cmd[0] = ADDITIONAL_FRAME;
 291             memcpy(cmd+1, both, 16 );
 292
 293             len = DesfireAPDU(cmd, 17, resp);
 294             if ( !len ) {
 295                 if (MF_DBGLEVEL >= MF_DBG_ERROR) {
 296                     DbpString("Authentication failed. Card timeout.");
 297                 }
 298                 OnError(3);
 299                 return;
 300             }
 301
 302             if ( resp[2] == 0x00 ){
 303
 304                 struct desfire_key sessionKey = {0};
 305                 desfirekey_t skey = &sessionKey;
 306                 Desfire_session_key_new( RndA, RndB , key, skey );
 307                 //print_result("SESSION : ", skey->data, 8);
 308
 309                 memcpy(encRndA, resp+3, 8);
 310
 311                 if (algo == 2)
 312                     tdes_dec(&encRndA, &encRndA, key->data);
 313                 else if (algo == 1)
 314                 des_dec(&encRndA, &encRndA, key->data);
 315
 316                 rol(decRndA,8);
 317                 for (int x = 0; x < 8; x++) {
 318                     if (decRndA[x] != encRndA[x]) {
 319                         DbpString("Authetication failed. Cannot varify PICC.");
 320                         OnError(4);
 321                         return;
 322                     }
 323                 }
 324
 325                 //Change the selected key to a new value.
 326                 /*
 327
 328                  // Current key is a 3DES key, change it to a DES key
 329                  if (algo == 2) {
 330                 cmd[0] = CHANGE_KEY;
 331                 cmd[1] = keyno;
 332
 333                 uint8_t newKey[16] = {0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77};
 334
 335                 uint8_t first, second;
 336                 uint8_t buff1[8] = {0x00};
 337                 uint8_t buff2[8] = {0x00};
 338                 uint8_t buff3[8] = {0x00};
 339
 340                 memcpy(buff1,newKey, 8);
 341                 memcpy(buff2,newKey + 8, 8);
 342
 343                 ComputeCrc14443(CRC_14443_A, newKey, 16, &first, &second);
 344                 memcpy(buff3, &first, 1);
 345                 memcpy(buff3 + 1, &second, 1);
 346
 347                  tdes_dec(&buff1, &buff1, skey->data);
 348                  memcpy(cmd+2,buff1,8);
 349
 350                  for (int x = 0; x < 8; x++) {
 351                  buff2[x] = buff2[x] ^ buff1[x];
 352                  }
 353                  tdes_dec(&buff2, &buff2, skey->data);
 354                  memcpy(cmd+10,buff2,8);
 355
 356                  for (int x = 0; x < 8; x++) {
 357                  buff3[x] = buff3[x] ^ buff2[x];
 358                  }
 359                  tdes_dec(&buff3, &buff3, skey->data);
 360                  memcpy(cmd+18,buff3,8);
 361
 362                  // The command always times out on the first attempt, this will retry until a response
 363                  // is recieved.
 364                  len = 0;
 365                  while(!len) {
 366                  len = DesfireAPDU(cmd,26,resp);
 367                  }
 368
 369                  } else {
 370                     // Current key is a DES key, change it to a 3DES key
 371                     if (algo == 1) {
 372                         cmd[0] = CHANGE_KEY;
 373                         cmd[1] = keyno;
 374
 375                         uint8_t newKey[16] = {0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f};
 376
 377                         uint8_t first, second;
 378                         uint8_t buff1[8] = {0x00};
 379                         uint8_t buff2[8] = {0x00};
 380                         uint8_t buff3[8] = {0x00};
 381
 382                         memcpy(buff1,newKey, 8);
 383                         memcpy(buff2,newKey + 8, 8);
 384
 385                         ComputeCrc14443(CRC_14443_A, newKey, 16, &first, &second);
 386                         memcpy(buff3, &first, 1);
 387                         memcpy(buff3 + 1, &second, 1);
 388
 389                 des_dec(&buff1, &buff1, skey->data);
 390                 memcpy(cmd+2,buff1,8);
 391
 392                 for (int x = 0; x < 8; x++) {
 393                     buff2[x] = buff2[x] ^ buff1[x];
 394                 }
 395                 des_dec(&buff2, &buff2, skey->data);
 396                 memcpy(cmd+10,buff2,8);
 397
 398                 for (int x = 0; x < 8; x++) {
 399                     buff3[x] = buff3[x] ^ buff2[x];
 400                 }
 401                 des_dec(&buff3, &buff3, skey->data);
 402                 memcpy(cmd+18,buff3,8);
 403
 404                 // The command always times out on the first attempt, this will retry until a response
 405                 // is recieved.
 406                 len = 0;
 407                 while(!len) {
 408                     len = DesfireAPDU(cmd,26,resp);
 409                 }
 410                     }
 411                  }
 412                 */
 413
 414                 OnSuccess();
 415                 if (algo == 2)
 416                     cmd_send(CMD_ACK,1,0,0,skey->data,16);
 417                 else if (algo == 1)
 418                 cmd_send(CMD_ACK,1,0,0,skey->data,8);
 419             } else {
 420                 DbpString("Authetication failed.");
 421                 OnError(6);
 422                 return;
 423             }
 424             }
 425                         break;
 426                 case 2:
 427                         //SendDesfireCommand(AUTHENTICATE_ISO, &keyno, resp);
 428                         break;
 429                 case 3:{
 430
 431                         //defaultkey
 432                         uint8_t keybytes[16] = {0x00};
 433                         if (datain[1] == 0xff){
 434                                 memcpy(keybytes,PICC_MASTER_KEY16,16);
 435                         } else{
 436                                 memcpy(keybytes, datain+1, datalen);
 437                         }
 438
 439                         struct desfire_key defaultkey = {0x00};
 440                         desfirekey_t key = &defaultkey;
 441                         Desfire_aes_key_new( keybytes, key);
 442
 443                         AesCtx ctx;
 444                         if ( AesCtxIni(&ctx, IV, key->data, KEY128, CBC) < 0 ){
 445                                 if( MF_DBGLEVEL >= 4) {
 446                                         Dbprintf("AES context failed to init");
 447                                 }
 448                                 OnError(7);
 449                                 return;
 450                         }
 451
 452                         cmd[0] = AUTHENTICATE_AES;
 453                         cmd[1] = 0x00;  //keynumber
 454                         len = DesfireAPDU(cmd, 2, resp);
 455                         if ( !len ) {
 456                                 if (MF_DBGLEVEL >= MF_DBG_ERROR) {
 457                                         DbpString("Authentication failed. Card timeout.");
 458                                 }
 459                                 OnError(3);
 460                                 return;
 461                         }
 462
 463                         memcpy( encRndB, resp+3, 16);
 464
 465                         // dekryptera tagnonce.
 466                         AesDecrypt(&ctx, encRndB, decRndB, 16);
 467                         rol(decRndB,16);
 468                         memcpy(both, nonce,16);
 469                         memcpy(both+16, decRndB ,16 );
 470                         AesEncrypt(&ctx, both, encBoth, 32 );
 471
 472                         cmd[0] = ADDITIONAL_FRAME;
 473                         memcpy(cmd+1, encBoth, 32 );
 474
 475                         len = DesfireAPDU(cmd, 33, resp);  // 1 + 32 == 33
 476                         if ( !len ) {
 477                                 if (MF_DBGLEVEL >= MF_DBG_ERROR) {
 478                                         DbpString("Authentication failed. Card timeout.");
 479                                 }
 480                 OnError(3);
 481                                 return;
 482                         }
 483
 484                         if ( resp[2] == 0x00 ){
 485                                 // Create AES Session key
 486                                 struct desfire_key sessionKey = {0};
 487                                 desfirekey_t skey = &sessionKey;
 488                                 Desfire_session_key_new( nonce, decRndB , key, skey );
 489                                 print_result("SESSION : ", skey->data, 16);
 490                         } else {
 491                                 DbpString("Authetication failed.");
 492                                 OnError(7);
 493                                 return;
 494                         }
 495
 496                         break;
 497                 }
 498         }
 499
 500         OnSuccess();
 501         cmd_send(CMD_ACK,1,len,0,resp,len);
 502 }
 503
 504 // 3 olika ISO sätt att skicka data till DESFIRE (direkt, inkapslat, inkapslat ISO)
 505 // cmd  =  cmd bytes to send
 506 // cmd_len = length of cmd
 507 // dataout = pointer to response data array
 508 int DesfireAPDU(uint8_t *cmd, size_t cmd_len, uint8_t *dataout){
 509
 510         size_t len = 0;
 511         size_t wrappedLen = 0;
 512         uint8_t wCmd[USB_CMD_DATA_SIZE] = {0x00};
 513
 514         uint8_t resp[MAX_FRAME_SIZE];
 515     uint8_t par[MAX_PARITY_SIZE];
 516
 517         wrappedLen = CreateAPDU( cmd, cmd_len, wCmd);
 518
 519         if (MF_DBGLEVEL >= 4) {
 520                 print_result("WCMD <--: ", wCmd, wrappedLen);
 521         }
 522         ReaderTransmit( wCmd, wrappedLen, NULL);
 523
 524         len = ReaderReceive(resp, par);
 525
 526         if( len == 0x00 ){
 527                 if (MF_DBGLEVEL >= 4) Dbprintf("fukked");
 528                 return FALSE; //DATA LINK ERROR
 529         }
 530         // if we received an I- or R(ACK)-Block with a block number equal to the
 531         // current block number, toggle the current block number
 532         else if (len >= 4 // PCB+CID+CRC = 4 bytes
 533                  && ((resp[0] & 0xC0) == 0 // I-Block
 534                      || (resp[0] & 0xD0) == 0x80) // R-Block with ACK bit set to 0
 535                  && (resp[0] & 0x01) == pcb_blocknum) // equal block numbers
 536         {
 537                 pcb_blocknum ^= 1;  //toggle next block
 538         }
 539
 540         memcpy(dataout, resp, len);
 541         return len;
 542 }
 543
 544 // CreateAPDU
 545 size_t CreateAPDU( uint8_t *datain, size_t len, uint8_t *dataout){
 546
 547         size_t cmdlen = MIN(len+4, USB_CMD_DATA_SIZE-1);
 548
 549         uint8_t cmd[cmdlen];
 550         memset(cmd, 0, cmdlen);
 551
 552         cmd[0] = 0x0A;  //  0x0A = skicka cid,  0x02 = ingen cid. Särskilda bitar //
 553         cmd[0] |= pcb_blocknum; // OR the block number into the PCB
 554         cmd[1] = 0x00;  //  CID: 0x00 //TODO: allow multiple selected cards
 555
 556         memcpy(cmd+2, datain, len);
 557         AppendCrc14443a(cmd, len+2);
 558
 559         memcpy(dataout, cmd, cmdlen);
 560
 561         return cmdlen;
 562 }
 563
 564         // crc_update(&desfire_crc32, 0, 1); /* CMD_WRITE */
 565         // crc_update(&desfire_crc32, addr, addr_sz);
 566         // crc_update(&desfire_crc32, byte, 8);
 567         // uint32_t crc = crc_finish(&desfire_crc32);
 568
 569 void OnSuccess(){
 570         pcb_blocknum = 0;
 571         ReaderTransmit(deselect_cmd, 3 , NULL);
 572         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 573         LEDsoff();
 574         set_tracing(FALSE);
 575 }
 576
 577 void OnError(uint8_t reason){
 578         cmd_send(CMD_ACK,0,reason,0,0,0);
 579         OnSuccess();
 580 }