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