git.zerfleddert.de Git - proxmark3-svn/blob - client/emv/emvcore.c

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2017 Merlok
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // EMV core functions
   9 //-----------------------------------------------------------------------------
  10
  11 #include "emvcore.h"
  12 #include "emvjson.h"
  13 #include "util_posix.h"
  14 #ifdef WITH_SMARTCARD
  15 #include "cmdsmartcard.h"
  16 #endif
  17
  18 // Got from here. Thanks)
  19 // https://eftlab.co.uk/index.php/site-map/knowledge-base/211-emv-aid-rid-pix
  20 static const char *PSElist [] = {
  21         "325041592E5359532E4444463031", // 2PAY.SYS.DDF01 - Visa Proximity Payment System Environment - PPSE
  22         "315041592E5359532E4444463031"  // 1PAY.SYS.DDF01 - Visa Payment System Environment - PSE
  23 };
  24 //static const size_t PSElistLen = sizeof(PSElist)/sizeof(char*);
  25
  26 char *TransactionTypeStr[] = {
  27         "MSD",
  28         "VSDC",
  29         "qVCDCMCHIP",
  30         "CDA"
  31 };
  32
  33 typedef struct {
  34         enum CardPSVendor vendor;
  35         const char* aid;
  36 } TAIDList;
  37
  38 static const TAIDList AIDlist [] = {
  39         // Visa International
  40         { CV_VISA,      "A00000000305076010"},                  // VISA ELO Credit
  41         { CV_VISA,      "A0000000031010" },                             // VISA Debit/Credit (Classic)
  42         { CV_VISA,      "A000000003101001" },                   // VISA Credit
  43         { CV_VISA,      "A000000003101002" },                   // VISA Debit
  44         { CV_VISA,      "A0000000032010" },                             // VISA Electron
  45         { CV_VISA,      "A0000000032020" },                             // VISA
  46         { CV_VISA,      "A0000000033010" },                             // VISA Interlink
  47         { CV_VISA,      "A0000000034010" },                             // VISA Specific
  48         { CV_VISA,      "A0000000035010" },                             // VISA Specific
  49         { CV_VISA,      "A0000000036010" },                             // Domestic Visa Cash Stored Value
  50         { CV_VISA,      "A0000000036020" },                             // International Visa Cash Stored Value
  51         { CV_VISA,      "A0000000038002" },                             // VISA Auth, VisaRemAuthen EMV-CAP (DPA)
  52         { CV_VISA,      "A0000000038010" },                             // VISA Plus
  53         { CV_VISA,      "A0000000039010" },                             // VISA Loyalty
  54         { CV_VISA,      "A000000003999910" },                   // VISA Proprietary ATM
  55         // Visa USA
  56         { CV_VISA,      "A000000098" },                                 // Debit Card
  57         { CV_VISA,      "A0000000980848" },                             // Debit Card
  58         // Mastercard International
  59         { CV_MASTERCARD, "A00000000401" },                      // MasterCard PayPass
  60         { CV_MASTERCARD, "A0000000041010" },            // MasterCard Credit
  61         { CV_MASTERCARD, "A00000000410101213" },        // MasterCard Credit
  62         { CV_MASTERCARD, "A00000000410101215" },        // MasterCard Credit
  63         { CV_MASTERCARD, "A0000000042010" },            // MasterCard Specific
  64         { CV_MASTERCARD, "A0000000043010" },            // MasterCard Specific
  65         { CV_MASTERCARD, "A0000000043060" },            // Maestro (Debit)
  66         { CV_MASTERCARD, "A000000004306001" },          // Maestro (Debit)
  67         { CV_MASTERCARD, "A0000000044010" },            // MasterCard Specific
  68         { CV_MASTERCARD, "A0000000045010" },            // MasterCard Specific
  69         { CV_MASTERCARD, "A0000000046000" },            // Cirrus
  70         { CV_MASTERCARD, "A0000000048002" },            // SecureCode Auth EMV-CAP
  71         { CV_MASTERCARD, "A0000000049999" },            // MasterCard PayPass
  72         // American Express
  73         { CV_AMERICANEXPRESS, "A000000025" },
  74         { CV_AMERICANEXPRESS, "A0000000250000" },
  75         { CV_AMERICANEXPRESS, "A00000002501" },
  76         { CV_AMERICANEXPRESS, "A000000025010402" },
  77         { CV_AMERICANEXPRESS, "A000000025010701" },
  78         { CV_AMERICANEXPRESS, "A000000025010801" },
  79         // Groupement des Cartes Bancaires "CB"
  80         { CV_CB, "A0000000421010" },                            // Cartes Bancaire EMV Card
  81         { CV_CB, "A0000000422010" },
  82         { CV_CB, "A0000000423010" },
  83         { CV_CB, "A0000000424010" },
  84         { CV_CB, "A0000000425010" },
  85         // JCB CO., LTD.
  86         { CV_JCB, "A00000006510" },                                     // JCB
  87         { CV_JCB, "A0000000651010" },                           // JCB J Smart Credit
  88         // Other
  89         { CV_OTHER, "A0000001544442" },                         // Banricompras Debito - Banrisul - Banco do Estado do Rio Grande do SUL - S.A.
  90         { CV_OTHER, "F0000000030001" },                         // BRADESCO
  91         { CV_OTHER, "A0000005241010" },                         // RuPay - RuPay
  92         { CV_OTHER, "D5780000021010" }                          // Bankaxept - Bankaxept
  93 };
  94 static const size_t AIDlistLen = sizeof(AIDlist)/sizeof(TAIDList);
  95
  96 static bool APDULogging = false;
  97 void SetAPDULogging(bool logging) {
  98         APDULogging = logging;
  99 }
 100
 101 enum CardPSVendor GetCardPSVendor(uint8_t * AID, size_t AIDlen) {
 102         char buf[100] = {0};
 103         if (AIDlen < 1)
 104                 return CV_NA;
 105
 106         hex_to_buffer((uint8_t *)buf, AID, AIDlen, sizeof(buf) - 1, 0, 0, true);
 107
 108         for(int i = 0; i < AIDlistLen; i ++) {
 109                 if (strncmp(AIDlist[i].aid, buf, strlen(AIDlist[i].aid)) == 0){
 110                         return AIDlist[i].vendor;
 111                 }
 112         }
 113
 114         return CV_NA;
 115 }
 116
 117 static bool print_cb(void *data, const struct tlv *tlv, int level, bool is_leaf) {
 118         emv_tag_dump(tlv, stdout, level);
 119         if (is_leaf) {
 120                 dump_buffer(tlv->value, tlv->len, stdout, level);
 121         }
 122
 123         return true;
 124 }
 125
 126 bool TLVPrintFromBuffer(uint8_t *data, int datalen) {
 127         struct tlvdb *t = NULL;
 128         t = tlvdb_parse_multi(data, datalen);
 129         if (t) {
 130                 PrintAndLogEx(NORMAL, "-------------------- TLV decoded --------------------");
 131
 132                 tlvdb_visit(t, print_cb, NULL, 0);
 133                 tlvdb_free(t);
 134                 return true;
 135         } else {
 136                 PrintAndLogEx(WARNING, "TLV ERROR: Can't parse response as TLV tree.");
 137         }
 138         return false;
 139 }
 140
 141 void TLVPrintFromTLVLev(struct tlvdb *tlv, int level) {
 142         if (!tlv)
 143                 return;
 144
 145         tlvdb_visit(tlv, print_cb, NULL, level);
 146 }
 147
 148 void TLVPrintFromTLV(struct tlvdb *tlv) {
 149         TLVPrintFromTLVLev(tlv, 0);
 150 }
 151
 152 void TLVPrintAIDlistFromSelectTLV(struct tlvdb *tlv) {
 153         PrintAndLogEx(NORMAL, "|------------------|--------|-------------------------|");
 154         PrintAndLogEx(NORMAL, "|    AID           |Priority| Name                    |");
 155         PrintAndLogEx(NORMAL, "|------------------|--------|-------------------------|");
 156
 157         struct tlvdb *ttmp = tlvdb_find(tlv, 0x6f);
 158         if (!ttmp)
 159                 PrintAndLogEx(NORMAL, "|                         none                        |");
 160
 161         while (ttmp) {
 162                 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x84, NULL);
 163                 const struct tlv *tgName = tlvdb_get_inchild(ttmp, 0x50, NULL);
 164                 const struct tlv *tgPrio = tlvdb_get_inchild(ttmp, 0x87, NULL);
 165                 if (!tgAID)
 166                         break;
 167                 PrintAndLogEx(NORMAL, "|%s|   %s  |%s|",
 168                         sprint_hex_inrow_ex(tgAID->value, tgAID->len, 18),
 169                         (tgPrio) ? sprint_hex(tgPrio->value, 1) : "   ",
 170                         (tgName) ? sprint_ascii_ex(tgName->value, tgName->len, 25) : "                         ");
 171
 172                 ttmp = tlvdb_find_next(ttmp, 0x6f);
 173         }
 174
 175         PrintAndLogEx(NORMAL, "|------------------|--------|-------------------------|");
 176 }
 177
 178 struct tlvdb *GetPANFromTrack2(const struct tlv *track2) {
 179         char track2Hex[200] = {0};
 180         uint8_t PAN[100] = {0};
 181         int PANlen = 0;
 182         char *tmp = track2Hex;
 183
 184         if (!track2)
 185                 return NULL;
 186
 187         for (int i = 0; i < track2->len; ++i, tmp += 2)
 188                 sprintf(tmp, "%02x", (unsigned int)track2->value[i]);
 189
 190         int posD = strchr(track2Hex, 'd') - track2Hex;
 191         if (posD < 1)
 192                 return NULL;
 193
 194         track2Hex[posD] = 0;
 195         if (strlen(track2Hex) % 2) {
 196                 track2Hex[posD] = 'F';
 197                 track2Hex[posD + 1] = '\0';
 198         }
 199
 200         param_gethex_to_eol(track2Hex, 0, PAN, sizeof(PAN), &PANlen);
 201
 202   return tlvdb_fixed(0x5a, PANlen, PAN);
 203 }
 204
 205 struct tlvdb *GetdCVVRawFromTrack2(const struct tlv *track2) {
 206         char track2Hex[200] = {0};
 207         char dCVVHex[100] = {0};
 208         uint8_t dCVV[100] = {0};
 209         int dCVVlen = 0;
 210         const int PINlen = 5; // must calculated from 9F67 MSD Offset but i have not seen this tag)
 211         char *tmp = track2Hex;
 212
 213         if (!track2)
 214                 return NULL;
 215
 216         for (int i = 0; i < track2->len; ++i, tmp += 2)
 217                 sprintf(tmp, "%02x", (unsigned int)track2->value[i]);
 218
 219         int posD = strchr(track2Hex, 'd') - track2Hex;
 220         if (posD < 1)
 221                 return NULL;
 222
 223         memset(dCVVHex, '0', 32);
 224         // ATC
 225         memcpy(dCVVHex + 0, track2Hex + posD + PINlen + 11, 4);
 226         // PAN 5 hex
 227         memcpy(dCVVHex + 4, track2Hex, 5);
 228         // expire date
 229         memcpy(dCVVHex + 9, track2Hex + posD + 1, 4);
 230         // service code
 231         memcpy(dCVVHex + 13, track2Hex + posD + 5, 3);
 232
 233         param_gethex_to_eol(dCVVHex, 0, dCVV, sizeof(dCVV), &dCVVlen);
 234
 235   return tlvdb_fixed(0x02, dCVVlen, dCVV);
 236 }
 237
 238 int EMVExchangeEx(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, sAPDU apdu, bool IncludeLe, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
 239         uint8_t data[APDU_RES_LEN] = {0};
 240
 241         *ResultLen = 0;
 242         if (sw) *sw = 0;
 243         uint16_t isw = 0;
 244         int res = 0;
 245
 246         if (ActivateField) {
 247                 DropField();
 248                 msleep(50);
 249         }
 250
 251         // COMPUTE APDU
 252         memcpy(data, &apdu, 5);
 253         if (apdu.data)
 254                 memcpy(&data[5], apdu.data, apdu.Lc);
 255
 256         if (APDULogging)
 257                 PrintAndLogEx(SUCCESS, ">>>> %s", sprint_hex(data, (IncludeLe?6:5) + apdu.Lc));
 258
 259         switch(channel) {
 260         case ECC_CONTACTLESS:
 261                 // 6 byes + data = INS + CLA + P1 + P2 + Lc + <data = Nc> + Le(?IncludeLe)
 262                 res = ExchangeAPDU14a(data, (IncludeLe?6:5) + apdu.Lc, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
 263                 if (res) {
 264                         return res;
 265                 }
 266                 break;
 267         case ECC_CONTACT:
 268                 //int ExchangeAPDUSC(uint8_t *datain, int datainlen, bool activateCard, bool leaveSignalON, uint8_t *dataout, int maxdataoutlen, int *dataoutlen);
 269 #ifdef WITH_SMARTCARD
 270                 res = ExchangeAPDUSC(data, (IncludeLe?6:5) + apdu.Lc, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
 271                 if (res) {
 272                         return res;
 273                 }
 274 #endif
 275                 break;
 276         }
 277
 278         if (APDULogging)
 279                 PrintAndLogEx(SUCCESS, "<<<< %s", sprint_hex(Result, *ResultLen));
 280
 281         if (*ResultLen < 2) {
 282                 return 200;
 283         }
 284
 285         *ResultLen -= 2;
 286         isw = Result[*ResultLen] * 0x0100 + Result[*ResultLen + 1];
 287         if (sw)
 288                 *sw = isw;
 289
 290         if (isw != 0x9000) {
 291                 if (APDULogging) {
 292                         if (*sw >> 8 == 0x61) {
 293                                 PrintAndLogEx(ERR, "APDU chaining len:%02x -->", *sw & 0xff);
 294                         } else {
 295                                 PrintAndLogEx(ERR, "APDU(%02x%02x) ERROR: [%4X] %s", apdu.CLA, apdu.INS, isw, GetAPDUCodeDescription(*sw >> 8, *sw & 0xff));
 296                                 return 5;
 297                         }
 298                 }
 299         }
 300
 301         // add to tlv tree
 302         if (tlv) {
 303                 struct tlvdb *t = tlvdb_parse_multi(Result, *ResultLen);
 304                 tlvdb_add(tlv, t);
 305         }
 306
 307         return 0;
 308 }
 309
 310 int EMVExchange(EMVCommandChannel channel, bool LeaveFieldON, sAPDU apdu, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
 311         return EMVExchangeEx(channel, false, LeaveFieldON, apdu, (channel == ECC_CONTACTLESS), Result, MaxResultLen, ResultLen, sw, tlv);
 312 }
 313
 314 int EMVSelect(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t *AID, size_t AIDLen, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
 315         return EMVExchangeEx(channel, ActivateField, LeaveFieldON, (sAPDU){0x00, 0xa4, 0x04, 0x00, AIDLen, AID}, (channel == ECC_CONTACTLESS), Result, MaxResultLen, ResultLen, sw, tlv);
 316 }
 317
 318 int EMVSelectPSE(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t PSENum, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw) {
 319         uint8_t buf[APDU_AID_LEN] = {0};
 320         *ResultLen = 0;
 321         int len = 0;
 322         int res = 0;
 323         switch (PSENum) {
 324                 case 1:
 325                         param_gethex_to_eol(PSElist[1], 0, buf, sizeof(buf), &len);
 326                         break;
 327                 case 2:
 328                         param_gethex_to_eol(PSElist[0], 0, buf, sizeof(buf), &len);
 329                         break;
 330                 default:
 331                         return -1;
 332         }
 333
 334         // select
 335         res = EMVSelect(channel, ActivateField, LeaveFieldON, buf, len, Result, MaxResultLen, ResultLen, sw, NULL);
 336
 337         return res;
 338 }
 339
 340 int EMVSearchPSE(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t PSENum, bool decodeTLV, struct tlvdb *tlv) {
 341         uint8_t data[APDU_RES_LEN] = {0};
 342         size_t datalen = 0;
 343         uint16_t sw = 0;
 344         int res;
 345
 346         // select PPSE
 347         res = EMVSelectPSE(channel, ActivateField, true, PSENum, data, sizeof(data), &datalen, &sw);
 348
 349         if (!res){
 350                 struct tlvdb *t = NULL;
 351                 t = tlvdb_parse_multi(data, datalen);
 352                 if (t) {
 353                         int retrycnt = 0;
 354                         struct tlvdb *ttmp = tlvdb_find_path(t, (tlv_tag_t[]){0x6f, 0xa5, 0xbf0c, 0x61, 0x00});
 355                         if (!ttmp)
 356                                 PrintAndLogEx(FAILED, "PPSE don't have records.");
 357
 358                         while (ttmp) {
 359                                 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x4f, NULL);
 360                                 if (tgAID) {
 361                                         res = EMVSelect(channel, false, true, (uint8_t *)tgAID->value, tgAID->len, data, sizeof(data), &datalen, &sw, tlv);
 362
 363                                         // retry if error and not returned sw error
 364                                         if (res && res != 5) {
 365                                                 if (++retrycnt < 3){
 366                                                         continue;
 367                                                 } else {
 368                                                         // card select error, proxmark error
 369                                                         if (res == 1) {
 370                                                                 PrintAndLogEx(WARNING, "Exit...");
 371                                                                 return 1;
 372                                                         }
 373
 374                                                         retrycnt = 0;
 375                                                         PrintAndLogEx(NORMAL, "Retry failed [%s]. Skiped...", sprint_hex_inrow(tgAID->value, tgAID->len));
 376                                                 }
 377
 378                                                 // next element
 379                                                 ttmp = tlvdb_find_next(ttmp, 0x61);
 380                                                 continue;
 381                                         }
 382                                         retrycnt = 0;
 383
 384                                         // all is ok
 385                                         if (decodeTLV){
 386                                                 PrintAndLogEx(NORMAL, "%s:", sprint_hex_inrow(tgAID->value, tgAID->len));
 387                                                 TLVPrintFromBuffer(data, datalen);
 388                                         }
 389                                 }
 390
 391                                 ttmp = tlvdb_find_next(ttmp, 0x61);
 392                         }
 393
 394                         tlvdb_free(t);
 395                 } else {
 396                         PrintAndLogEx(WARNING, "PPSE ERROR: Can't get TLV from response.");
 397                 }
 398         } else {
 399                 PrintAndLogEx(WARNING, "PPSE ERROR: Can't select PPSE AID. Error: %d", res);
 400         }
 401
 402         if(!LeaveFieldON)
 403                 DropField();
 404
 405         return res;
 406 }
 407
 408 int EMVSearch(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvdb *tlv) {
 409         uint8_t aidbuf[APDU_AID_LEN] = {0};
 410         int aidlen = 0;
 411         uint8_t data[APDU_RES_LEN] = {0};
 412         size_t datalen = 0;
 413         uint16_t sw = 0;
 414
 415         int res = 0;
 416         int retrycnt = 0;
 417         for(int i = 0; i < AIDlistLen; i ++) {
 418                 param_gethex_to_eol(AIDlist[i].aid, 0, aidbuf, sizeof(aidbuf), &aidlen);
 419                 res = EMVSelect(channel, (i == 0) ? ActivateField : false, (i == AIDlistLen - 1) ? LeaveFieldON : true, aidbuf, aidlen, data, sizeof(data), &datalen, &sw, tlv);
 420                 // retry if error and not returned sw error
 421                 if (res && res != 5) {
 422                         if (++retrycnt < 3){
 423                                 i--;
 424                         } else {
 425                                 // (1) - card select error, proxmark error OR (200) - result length = 0
 426                                 if (res == 1 || res == 200) {
 427                                         PrintAndLogEx(WARNING, "Exit...");
 428                                         return 1;
 429                                 }
 430
 431                                 retrycnt = 0;
 432                                 PrintAndLogEx(FAILED, "Retry failed [%s]. Skipped...", AIDlist[i].aid);
 433                         }
 434                         continue;
 435                 }
 436                 retrycnt = 0;
 437
 438                 if (res)
 439                         continue;
 440
 441                 if (!datalen)
 442                         continue;
 443
 444                 if (decodeTLV) {
 445                         PrintAndLogEx(SUCCESS, "%s", AIDlist[i].aid);
 446                         TLVPrintFromBuffer(data, datalen);
 447                 }
 448         }
 449
 450         return 0;
 451 }
 452
 453 int EMVSelectApplication(struct tlvdb *tlv, uint8_t *AID, size_t *AIDlen) {
 454         // check priority. 0x00 - highest
 455         int prio = 0xffff;
 456
 457         *AIDlen = 0;
 458
 459         struct tlvdb *ttmp = tlvdb_find(tlv, 0x6f);
 460         if (!ttmp)
 461                 return 1;
 462
 463         while (ttmp) {
 464                 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x84, NULL);
 465                 const struct tlv *tgPrio = tlvdb_get_inchild(ttmp, 0x87, NULL);
 466
 467                 if (!tgAID)
 468                         break;
 469
 470                 if (tgPrio) {
 471                         int pt = bytes_to_num((uint8_t*)tgPrio->value, (tgPrio->len < 2) ? tgPrio->len : 2);
 472                         if (pt < prio) {
 473                                 prio = pt;
 474
 475                                 memcpy(AID, tgAID->value, tgAID->len);
 476                                 *AIDlen = tgAID->len;
 477                         }
 478                 } else {
 479                         // takes the first application from list wo priority
 480                         if (!*AIDlen) {
 481                         memcpy(AID, tgAID->value, tgAID->len);
 482                         *AIDlen = tgAID->len;
 483                         }
 484                 }
 485
 486                 ttmp = tlvdb_find_next(ttmp, 0x6f);
 487         }
 488
 489         return 0;
 490 }
 491
 492 int EMVGPO(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *PDOL, size_t PDOLLen, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
 493         return EMVExchange(channel, LeaveFieldON, (sAPDU){0x80, 0xa8, 0x00, 0x00, PDOLLen, PDOL}, Result, MaxResultLen, ResultLen, sw, tlv);
 494 }
 495
 496 int EMVReadRecord(EMVCommandChannel channel, bool LeaveFieldON, uint8_t SFI, uint8_t SFIrec, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
 497         int res = EMVExchange(channel, LeaveFieldON, (sAPDU){0x00, 0xb2, SFIrec, (SFI << 3) | 0x04, 0, NULL}, Result, MaxResultLen, ResultLen, sw, tlv);
 498         if (*sw == 0x6700) {
 499                 PrintAndLogEx(INFO, ">>> trying to reissue command withouth Le...");
 500                 res = EMVExchangeEx(channel, false, LeaveFieldON, (sAPDU){0x00, 0xb2, SFIrec, (SFI << 3) | 0x04, 0, NULL}, false, Result, MaxResultLen, ResultLen, sw, tlv);
 501         }
 502         return res;
 503 }
 504
 505 int EMVAC(EMVCommandChannel channel, bool LeaveFieldON, uint8_t RefControl, uint8_t *CDOL, size_t CDOLLen, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
 506         return EMVExchange(channel, LeaveFieldON, (sAPDU){0x80, 0xae, RefControl, 0x00, CDOLLen, CDOL}, Result, MaxResultLen, ResultLen, sw, tlv);
 507 }
 508
 509 int EMVGenerateChallenge(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
 510         int res = EMVExchange(channel, LeaveFieldON, (sAPDU){0x00, 0x84, 0x00, 0x00, 0x00, NULL}, Result, MaxResultLen, ResultLen, sw, tlv);
 511         if (*sw == 0x6700) {
 512                 PrintAndLogEx(INFO, ">>> trying to reissue command withouth Le...");
 513                 res = EMVExchangeEx(channel, false, LeaveFieldON, (sAPDU){0x00, 0x84, 0x00, 0x00, 0x00, NULL}, false, Result, MaxResultLen, ResultLen, sw, tlv);
 514         }
 515         return res;
 516 }
 517
 518 int EMVInternalAuthenticate(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *DDOL, size_t DDOLLen, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
 519         return EMVExchange(channel, LeaveFieldON, (sAPDU){0x00, 0x88, 0x00, 0x00, DDOLLen, DDOL}, Result, MaxResultLen, ResultLen, sw, tlv);
 520 }
 521
 522 int MSCComputeCryptoChecksum(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *UDOL, uint8_t UDOLlen, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
 523         return EMVExchange(channel, LeaveFieldON, (sAPDU){0x80, 0x2a, 0x8e, 0x80, UDOLlen, UDOL}, Result, MaxResultLen, ResultLen, sw, tlv);
 524 }
 525
 526 // Authentication
 527 struct emv_pk *get_ca_pk(struct tlvdb *db) {
 528         const struct tlv *df_tlv = tlvdb_get(db, 0x84, NULL);
 529         const struct tlv *caidx_tlv = tlvdb_get(db, 0x8f, NULL);
 530
 531         if (!df_tlv || !caidx_tlv || df_tlv->len < 6 || caidx_tlv->len != 1)
 532                 return NULL;
 533
 534         PrintAndLogEx(NORMAL, "CA public key index 0x%0x", caidx_tlv->value[0]);
 535         return emv_pk_get_ca_pk(df_tlv->value, caidx_tlv->value[0]);
 536 }
 537
 538 int trSDA(struct tlvdb *tlv) {
 539
 540         struct emv_pk *pk = get_ca_pk(tlv);
 541         if (!pk) {
 542                 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
 543                 return 2;
 544         }
 545
 546         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
 547         if (!issuer_pk) {
 548                 emv_pk_free(pk);
 549                 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
 550                 return 2;
 551         }
 552
 553         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx",
 554                 issuer_pk->rid[0],
 555                 issuer_pk->rid[1],
 556                 issuer_pk->rid[2],
 557                 issuer_pk->rid[3],
 558                 issuer_pk->rid[4],
 559                 issuer_pk->index,
 560                 issuer_pk->serial[0],
 561                 issuer_pk->serial[1],
 562                 issuer_pk->serial[2]
 563                 );
 564
 565         const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
 566         if (!sda_tlv || sda_tlv->len < 1) {
 567                 emv_pk_free(issuer_pk);
 568                 emv_pk_free(pk);
 569                 PrintAndLogEx(WARNING, "Can't find input list for Offline Data Authentication. Exit.");
 570                 return 3;
 571         }
 572
 573         struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
 574         if (dac_db) {
 575                 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
 576                 PrintAndLogEx(NORMAL, "SDA verified OK. (%02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]);
 577                 tlvdb_add(tlv, dac_db);
 578         } else {
 579                 emv_pk_free(issuer_pk);
 580                 emv_pk_free(pk);
 581                 PrintAndLogEx(WARNING, "SSAD verify error");
 582                 return 4;
 583         }
 584
 585         emv_pk_free(issuer_pk);
 586         emv_pk_free(pk);
 587         return 0;
 588 }
 589
 590 static const unsigned char default_ddol_value[] = {0x9f, 0x37, 0x04};
 591 static struct tlv default_ddol_tlv = {.tag = 0x9f49, .len = 3, .value = default_ddol_value };
 592
 593 int trDDA(EMVCommandChannel channel, bool decodeTLV, struct tlvdb *tlv) {
 594         uint8_t buf[APDU_RES_LEN] = {0};
 595         size_t len = 0;
 596         uint16_t sw = 0;
 597
 598         struct emv_pk *pk = get_ca_pk(tlv);
 599         if (!pk) {
 600                 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
 601                 return 2;
 602         }
 603
 604         const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
 605         if (!sda_tlv || sda_tlv->len < 1) {
 606                 emv_pk_free(pk);
 607                 PrintAndLogEx(WARNING, "Error: Can't find input list for Offline Data Authentication. Exit.");
 608                 return 3;
 609         }
 610
 611         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
 612         if (!issuer_pk) {
 613                 emv_pk_free(pk);
 614                 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
 615                 return 2;
 616         }
 617         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 618                         issuer_pk->rid[0],
 619                         issuer_pk->rid[1],
 620                         issuer_pk->rid[2],
 621                         issuer_pk->rid[3],
 622                         issuer_pk->rid[4],
 623                         issuer_pk->index,
 624                         issuer_pk->serial[0],
 625                         issuer_pk->serial[1],
 626                         issuer_pk->serial[2]
 627                         );
 628
 629         struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
 630         if (!icc_pk) {
 631                 emv_pk_free(pk);
 632                 emv_pk_free(issuer_pk);
 633                 PrintAndLogEx(WARNING, "Error: ICC setrificate not found. Exit.");
 634                 return 2;
 635         }
 636         PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 637                         icc_pk->rid[0],
 638                         icc_pk->rid[1],
 639                         icc_pk->rid[2],
 640                         icc_pk->rid[3],
 641                         icc_pk->rid[4],
 642                         icc_pk->index,
 643                         icc_pk->serial[0],
 644                         icc_pk->serial[1],
 645                         icc_pk->serial[2]
 646                         );
 647
 648         struct emv_pk *icc_pe_pk = emv_pki_recover_icc_pe_cert(issuer_pk, tlv);
 649         if (!icc_pe_pk) {
 650                 PrintAndLogEx(WARNING, "WARNING: ICC PE PK recover error. ");
 651         } else {
 652                 PrintAndLogEx(SUCCESS, "ICC PE PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 653                                 icc_pe_pk->rid[0],
 654                                 icc_pe_pk->rid[1],
 655                                 icc_pe_pk->rid[2],
 656                                 icc_pe_pk->rid[3],
 657                                 icc_pe_pk->rid[4],
 658                                 icc_pe_pk->index,
 659                                 icc_pe_pk->serial[0],
 660                                 icc_pe_pk->serial[1],
 661                                 icc_pe_pk->serial[2]
 662                                 );
 663         }
 664
 665         // 9F4B: Signed Dynamic Application Data
 666         const struct tlv *sdad_tlv = tlvdb_get(tlv, 0x9f4b, NULL);
 667         // DDA with internal authenticate OR fDDA with filled 0x9F4B tag (GPO result)
 668         // EMV kernel3 v2.4, contactless book C-3, C.1., page 147
 669         if (sdad_tlv) {
 670                 PrintAndLogEx(NORMAL, "\n* * Got Signed Dynamic Application Data (9F4B) form GPO. Maybe fDDA...");
 671
 672                 const struct tlvdb *atc_db = emv_pki_recover_atc_ex(icc_pk, tlv, true);
 673                 if (!atc_db) {
 674                         PrintAndLogEx(WARNING, "Error: Can't recover IDN (ICC Dynamic Number)");
 675                         emv_pk_free(pk);
 676                         emv_pk_free(issuer_pk);
 677                         emv_pk_free(icc_pk);
 678                         return 8;
 679                 }
 680
 681                 // 9f36 Application Transaction Counter (ATC)
 682                 const struct tlv *atc_tlv = tlvdb_get(atc_db, 0x9f36, NULL);
 683                 if(atc_tlv) {
 684                         PrintAndLogEx(NORMAL, "\nATC (Application Transaction Counter) [%zu] %s", atc_tlv->len, sprint_hex_inrow(atc_tlv->value, atc_tlv->len));
 685
 686                         const struct tlv *core_atc_tlv = tlvdb_get(tlv, 0x9f36, NULL);
 687                         if(tlv_equal(core_atc_tlv, atc_tlv)) {
 688                                 PrintAndLogEx(SUCCESS, "ATC check OK.");
 689                                 PrintAndLogEx(SUCCESS, "fDDA (fast DDA) verified OK.");
 690                         } else {
 691                                 PrintAndLogEx(WARNING, "Error: fDDA verified, but ATC in the certificate and ATC in the record not the same.");
 692                         }
 693                 } else {
 694                         PrintAndLogEx(NORMAL, "\nERROR: fDDA (fast DDA) verify error");
 695                         emv_pk_free(pk);
 696                         emv_pk_free(issuer_pk);
 697                         emv_pk_free(icc_pk);
 698                         return 9;
 699                 }
 700         } else {
 701                 struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
 702                 if (dac_db) {
 703                         const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
 704                         PrintAndLogEx(NORMAL, "SDA verified OK. (%02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]);
 705                         tlvdb_add(tlv, dac_db);
 706                 } else {
 707                         PrintAndLogEx(WARNING, "Error: SSAD verify error");
 708                         emv_pk_free(pk);
 709                         emv_pk_free(issuer_pk);
 710                         emv_pk_free(icc_pk);
 711                         return 4;
 712                 }
 713
 714                 PrintAndLogEx(NORMAL, "\n* Calc DDOL");
 715                 const struct tlv *ddol_tlv = tlvdb_get(tlv, 0x9f49, NULL);
 716                 if (!ddol_tlv) {
 717                         ddol_tlv = &default_ddol_tlv;
 718                         PrintAndLogEx(NORMAL, "DDOL [9f49] not found. Using default DDOL");
 719                 }
 720
 721                 struct tlv *ddol_data_tlv = dol_process(ddol_tlv, tlv, 0);
 722                 if (!ddol_data_tlv) {
 723                         PrintAndLogEx(WARNING, "Error: Can't create DDOL TLV");
 724                         emv_pk_free(pk);
 725                         emv_pk_free(issuer_pk);
 726                         emv_pk_free(icc_pk);
 727                         return 5;
 728                 }
 729
 730                 PrintAndLogEx(NORMAL, "DDOL data[%d]: %s", ddol_data_tlv->len, sprint_hex(ddol_data_tlv->value, ddol_data_tlv->len));
 731
 732                 PrintAndLogEx(NORMAL, "\n* Internal Authenticate");
 733                 int res = EMVInternalAuthenticate(channel, true, (uint8_t *)ddol_data_tlv->value, ddol_data_tlv->len, buf, sizeof(buf), &len, &sw, NULL);
 734                 if (res) {
 735                         PrintAndLogEx(WARNING, "Internal Authenticate error(%d): %4x. Exit...", res, sw);
 736                         free(ddol_data_tlv);
 737                         emv_pk_free(pk);
 738                         emv_pk_free(issuer_pk);
 739                         emv_pk_free(icc_pk);
 740                         return 6;
 741                 }
 742
 743                 struct tlvdb *dda_db = NULL;
 744                 if (buf[0] == 0x80) {
 745                         if (len < 3 ) {
 746                                 PrintAndLogEx(WARNING, "Error: Internal Authenticate format1 parsing error. length=%d", len);
 747                         } else {
 748                                 // 9f4b Signed Dynamic Application Data
 749                                 dda_db = tlvdb_fixed(0x9f4b, len - 2, buf + 2);
 750                                 tlvdb_add(tlv, dda_db);
 751                                 if (decodeTLV){
 752                                         PrintAndLogEx(NORMAL, "* * Decode response format 1:");
 753                                         TLVPrintFromTLV(dda_db);
 754                                 }
 755                         }
 756                 } else {
 757                         dda_db = tlvdb_parse_multi(buf, len);
 758                         if(!dda_db) {
 759                                 PrintAndLogEx(WARNING, "Error: Can't parse Internal Authenticate result as TLV");
 760                                 free(ddol_data_tlv);
 761                                 emv_pk_free(pk);
 762                                 emv_pk_free(issuer_pk);
 763                                 emv_pk_free(icc_pk);
 764                                 return 7;
 765                         }
 766                         tlvdb_add(tlv, dda_db);
 767
 768                         if (decodeTLV)
 769                                 TLVPrintFromTLV(dda_db);
 770                 }
 771
 772                 struct tlvdb *idn_db = emv_pki_recover_idn_ex(icc_pk, dda_db, ddol_data_tlv, true);
 773                 free(ddol_data_tlv);
 774                 if (!idn_db) {
 775                         PrintAndLogEx(WARNING, "Error: Can't recover IDN (ICC Dynamic Number)");
 776                         tlvdb_free(dda_db);
 777                         emv_pk_free(pk);
 778                         emv_pk_free(issuer_pk);
 779                         emv_pk_free(icc_pk);
 780                         return 8;
 781                 }
 782                 tlvdb_free(dda_db);
 783
 784                 // 9f4c ICC Dynamic Number
 785                 const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL);
 786                 if(idn_tlv) {
 787                         PrintAndLogEx(NORMAL, "\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len));
 788                         PrintAndLogEx(NORMAL, "DDA verified OK.");
 789                         tlvdb_add(tlv, idn_db);
 790                         tlvdb_free(idn_db);
 791                 } else {
 792                         PrintAndLogEx(NORMAL, "\nERROR: DDA verify error");
 793                         tlvdb_free(idn_db);
 794
 795                         emv_pk_free(pk);
 796                         emv_pk_free(issuer_pk);
 797                         emv_pk_free(icc_pk);
 798                         return 9;
 799                 }
 800         }
 801
 802         emv_pk_free(pk);
 803         emv_pk_free(issuer_pk);
 804         emv_pk_free(icc_pk);
 805         return 0;
 806 }
 807
 808 int trCDA(struct tlvdb *tlv, struct tlvdb *ac_tlv, struct tlv *pdol_data_tlv, struct tlv *ac_data_tlv) {
 809
 810         struct emv_pk *pk = get_ca_pk(tlv);
 811         if (!pk) {
 812                 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
 813                 return 2;
 814         }
 815
 816         const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
 817         if (!sda_tlv || sda_tlv->len < 1) {
 818                 PrintAndLogEx(WARNING, "Error: Can't find input list for Offline Data Authentication. Exit.");
 819                 emv_pk_free(pk);
 820                 return 3;
 821         }
 822
 823         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
 824         if (!issuer_pk) {
 825                 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
 826                 emv_pk_free(pk);
 827                 return 2;
 828         }
 829         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 830                         issuer_pk->rid[0],
 831                         issuer_pk->rid[1],
 832                         issuer_pk->rid[2],
 833                         issuer_pk->rid[3],
 834                         issuer_pk->rid[4],
 835                         issuer_pk->index,
 836                         issuer_pk->serial[0],
 837                         issuer_pk->serial[1],
 838                         issuer_pk->serial[2]
 839                         );
 840
 841         struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
 842         if (!icc_pk) {
 843                 PrintAndLogEx(WARNING, "Error: ICC setrificate not found. Exit.");
 844                 emv_pk_free(pk);
 845                 emv_pk_free(issuer_pk);
 846                 return 2;
 847         }
 848         PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 849                         icc_pk->rid[0],
 850                         icc_pk->rid[1],
 851                         icc_pk->rid[2],
 852                         icc_pk->rid[3],
 853                         icc_pk->rid[4],
 854                         icc_pk->index,
 855                         icc_pk->serial[0],
 856                         icc_pk->serial[1],
 857                         icc_pk->serial[2]
 858                         );
 859
 860         struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
 861         if (dac_db) {
 862                 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
 863                 PrintAndLogEx(NORMAL, "SSAD verified OK. (%02hhx:%02hhx)", dac_tlv->value[0], dac_tlv->value[1]);
 864                 tlvdb_add(tlv, dac_db);
 865         } else {
 866                 PrintAndLogEx(WARNING, "Error: SSAD verify error");
 867                 emv_pk_free(pk);
 868                 emv_pk_free(issuer_pk);
 869                 emv_pk_free(icc_pk);
 870                 return 4;
 871         }
 872
 873         PrintAndLogEx(NORMAL, "\n* * Check Signed Dynamic Application Data (SDAD)");
 874         struct tlvdb *idn_db = emv_pki_perform_cda_ex(icc_pk, tlv, ac_tlv,
 875                         pdol_data_tlv, // pdol
 876                         ac_data_tlv,   // cdol1
 877                         NULL,          // cdol2
 878                         true);
 879         if (idn_db) {
 880                 const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL);
 881                 PrintAndLogEx(NORMAL, "\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len));
 882                 PrintAndLogEx(NORMAL, "CDA verified OK.");
 883                 tlvdb_add(tlv, idn_db);
 884         } else {
 885                 PrintAndLogEx(NORMAL, "\nERROR: CDA verify error");
 886         }
 887
 888         emv_pk_free(pk);
 889         emv_pk_free(issuer_pk);
 890         emv_pk_free(icc_pk);
 891         return 0;
 892 }
 893
 894 int RecoveryCertificates(struct tlvdb *tlvRoot, json_t *root) {
 895
 896         struct emv_pk *pk = get_ca_pk(tlvRoot);
 897         if (!pk) {
 898                 PrintAndLog("ERROR: Key not found. Exit.");
 899                 return 1;
 900         }
 901
 902         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlvRoot);
 903         if (!issuer_pk) {
 904                 emv_pk_free(pk);
 905                 PrintAndLog("WARNING: Issuer certificate not found. Exit.");
 906                 return 2;
 907         }
 908         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx",
 909                         issuer_pk->rid[0],
 910                         issuer_pk->rid[1],
 911                         issuer_pk->rid[2],
 912                         issuer_pk->rid[3],
 913                         issuer_pk->rid[4],
 914                         issuer_pk->index,
 915                         issuer_pk->serial[0],
 916                         issuer_pk->serial[1],
 917                         issuer_pk->serial[2]
 918                         );
 919
 920         JsonSaveBufAsHex(root, "$.ApplicationData.RID", issuer_pk->rid, 5);
 921
 922         char *issuer_pk_c = emv_pk_dump_pk(issuer_pk);
 923         JsonSaveStr(root, "$.ApplicationData.IssuerPublicKeyDec", issuer_pk_c);
 924         JsonSaveBufAsHex(root, "$.ApplicationData.IssuerPublicKeyModulus", issuer_pk->modulus, issuer_pk->mlen);
 925         free(issuer_pk_c);
 926
 927         struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlvRoot, NULL);
 928         if (!icc_pk) {
 929                 emv_pk_free(pk);
 930                 emv_pk_free(issuer_pk);
 931                 PrintAndLogEx(WARNING, "WARNING: ICC certificate not found. Exit.");
 932                 return 2;
 933         }
 934         PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 935                         icc_pk->rid[0],
 936                         icc_pk->rid[1],
 937                         icc_pk->rid[2],
 938                         icc_pk->rid[3],
 939                         icc_pk->rid[4],
 940                         icc_pk->index,
 941                         icc_pk->serial[0],
 942                         icc_pk->serial[1],
 943                         icc_pk->serial[2]
 944                         );
 945
 946         char *icc_pk_c = emv_pk_dump_pk(icc_pk);
 947         JsonSaveStr(root, "$.ApplicationData.ICCPublicKeyDec", icc_pk_c);
 948         JsonSaveBufAsHex(root, "$.ApplicationData.ICCPublicKeyModulus", icc_pk->modulus, icc_pk->mlen);
 949         free(issuer_pk_c);
 950
 951         return 0;
 952 }