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
  13 #include <string.h>
  14 #include "emvjson.h"
  15 #include "util_posix.h"
  16 #include "protocols.h"
  17 #include "ui.h"
  18 #include "util.h"
  19 #include "emv_tags.h"
  20 #include "emv_pk.h"
  21 #include "emv_pki.h"
  22 #include "cmdhf14a.h"
  23 #include "apduinfo.h"
  24 #include "tlv.h"
  25 #include "dump.h"
  26 #include "dol.h"
  27
  28 #ifdef WITH_SMARTCARD
  29 #include "cmdsmartcard.h"
  30 #endif
  31
  32
  33 // Got from here. Thanks)
  34 // https://eftlab.co.uk/index.php/site-map/knowledge-base/211-emv-aid-rid-pix
  35 static const char *PSElist [] = {
  36         "325041592E5359532E4444463031", // 2PAY.SYS.DDF01 - Visa Proximity Payment System Environment - PPSE
  37         "315041592E5359532E4444463031"  // 1PAY.SYS.DDF01 - Visa Payment System Environment - PSE
  38 };
  39 //static const size_t PSElistLen = sizeof(PSElist)/sizeof(char*);
  40
  41 char *TransactionTypeStr[] = {
  42         "MSD",
  43         "VSDC",
  44         "qVCDCMCHIP",
  45         "CDA"
  46 };
  47
  48 typedef struct {
  49         enum CardPSVendor vendor;
  50         const char* aid;
  51 } TAIDList;
  52
  53 static const TAIDList AIDlist [] = {
  54         // Visa International
  55         { CV_VISA,  "A00000000305076010"},          // VISA ELO Credit
  56         { CV_VISA,  "A0000000031010" },             // VISA Debit/Credit (Classic)
  57         { CV_VISA,  "A000000003101001" },           // VISA Credit
  58         { CV_VISA,  "A000000003101002" },           // VISA Debit
  59         { CV_VISA,  "A0000000032010" },             // VISA Electron
  60         { CV_VISA,  "A0000000032020" },             // VISA
  61         { CV_VISA,  "A0000000033010" },             // VISA Interlink
  62         { CV_VISA,  "A0000000034010" },             // VISA Specific
  63         { CV_VISA,  "A0000000035010" },             // VISA Specific
  64         { CV_VISA,  "A0000000036010" },             // Domestic Visa Cash Stored Value
  65         { CV_VISA,  "A0000000036020" },             // International Visa Cash Stored Value
  66         { CV_VISA,  "A0000000038002" },             // VISA Auth, VisaRemAuthen EMV-CAP (DPA)
  67         { CV_VISA,  "A0000000038010" },             // VISA Plus
  68         { CV_VISA,  "A0000000039010" },             // VISA Loyalty
  69         { CV_VISA,  "A000000003999910" },           // VISA Proprietary ATM
  70         // Visa USA
  71         { CV_VISA,  "A000000098" },                 // Debit Card
  72         { CV_VISA,  "A0000000980848" },             // Debit Card
  73         // Mastercard International
  74         { CV_MASTERCARD, "A00000000401" },          // MasterCard PayPass
  75         { CV_MASTERCARD, "A0000000041010" },        // MasterCard Credit
  76         { CV_MASTERCARD, "A00000000410101213" },    // MasterCard Credit
  77         { CV_MASTERCARD, "A00000000410101215" },    // MasterCard Credit
  78         { CV_MASTERCARD, "A0000000042010" },        // MasterCard Specific
  79         { CV_MASTERCARD, "A0000000043010" },        // MasterCard Specific
  80         { CV_MASTERCARD, "A0000000043060" },        // Maestro (Debit)
  81         { CV_MASTERCARD, "A000000004306001" },      // Maestro (Debit)
  82         { CV_MASTERCARD, "A0000000044010" },        // MasterCard Specific
  83         { CV_MASTERCARD, "A0000000045010" },        // MasterCard Specific
  84         { CV_MASTERCARD, "A0000000046000" },        // Cirrus
  85         { CV_MASTERCARD, "A0000000048002" },        // SecureCode Auth EMV-CAP
  86         { CV_MASTERCARD, "A0000000049999" },        // MasterCard PayPass
  87         { CV_MASTERCARD, "B012345678" },            // Maestro TEST Used for development
  88         // American Express
  89         { CV_AMERICANEXPRESS, "A000000025" },
  90         { CV_AMERICANEXPRESS, "A0000000250000" },
  91         { CV_AMERICANEXPRESS, "A00000002501" },
  92         { CV_AMERICANEXPRESS, "A000000025010402" },
  93         { CV_AMERICANEXPRESS, "A000000025010701" },
  94         { CV_AMERICANEXPRESS, "A000000025010801" },
  95         // Groupement des Cartes Bancaires "CB"
  96         { CV_CB, "A0000000421010" },                // Cartes Bancaire EMV Card
  97         { CV_CB, "A0000000422010" },
  98         { CV_CB, "A0000000423010" },
  99         { CV_CB, "A0000000424010" },
 100         { CV_CB, "A0000000425010" },
 101         // JCB CO., LTD.
 102         { CV_JCB, "A00000006510" },                 // JCB
 103         { CV_JCB, "A0000000651010" },               // JCB J Smart Credit
 104         // Switch Card Services Ltd.
 105         { CV_SWITCH, "A0000000050001" },            // Maestro UK
 106         { CV_SWITCH, "A0000000050002" },            // Solo
 107         // Diners Club International Ltd.
 108         { CV_DINERS, "A0000001523010" },            // Discover, Pulse D Pas Discover Card
 109         { CV_DINERS, "A0000001524010" },            // Discover, Discover Debit Common Card
 110         // Other
 111         { CV_OTHER, "A00000002401" },               // Midland Bank Plc - Self Service
 112         { CV_OTHER, "A0000000291010" },             // LINK Interchange Network Ltd - Link / American Express
 113         { CV_OTHER, "A00000006900" },               // Société Européenne de Monnaie Electronique SEME - Moneo
 114         { CV_OTHER, "A000000077010000021000000000003B" },  // Oberthur Technologies France - Visa AEPN
 115         { CV_OTHER, "A0000001211010" },             // PBS Danmark A/S - Denmark - Dankort (VISA GEM Vision) - Danish domestic debit card
 116         { CV_OTHER, "A0000001410001" },             // Associazione Bancaria Italiana - Italy - PagoBANCOMAT - CoGeBan Consorzio BANCOMAT (Italian domestic debit card)
 117         { CV_OTHER, "A0000001544442" },             // Banricompras Debito - Banrisul - Banco do Estado do Rio Grande do SUL - S.A.
 118         { CV_OTHER, "A000000172950001" },           // Financial Information Service Co. Ltd. - Taiwan - BAROC Financial Application Taiwan- The Bankers Association of the Republic of China
 119         { CV_OTHER, "A0000001850002" },             // Post Office Limited - United Kingdom - UK Post Office Account card
 120         { CV_OTHER, "A0000002281010" },             // Saudi Arabian Monetary Agency (SAMA) - Kingdom of Saudi Arabia - SPAN (M/Chip) - SPAN2 (Saudi Payments Network) - Saudi Arabia domestic credit/debit card (Saudi Arabia Monetary Agency)
 121         { CV_OTHER, "A0000002282010" },             // Saudi Arabian Monetary Agency (SAMA) - Kingdom of Saudi Arabia - SPAN (VIS) - SPAN2 (Saudi Payments Network) - Saudi Arabia domestic credit/debit card (Saudi Arabia Monetary Agency)
 122         { CV_OTHER, "A0000002771010" },             // Interac Association - Canada - INTERAC - Canadian domestic credit/debit card
 123         { CV_OTHER, "A00000031510100528" },         // Currence Holding/PIN BV - The Netherlands- Currence PuC
 124         { CV_OTHER, "A0000003156020" },             // Currence Holding/PIN BV - The Netherlands - Chipknip
 125         { CV_OTHER, "A0000003591010028001" },       // Euro Alliance of Payment Schemes s.c.r.l. (EAPS) - Belgium - Girocard EAPS - ZKA (Germany)
 126         { CV_OTHER, "A0000003710001" },             // Verve - Nigeria - InterSwitch Verve Card - Nigerian local switch company
 127         { CV_OTHER, "A0000004540010" },             // eTranzact - Nigeria - Etranzact Genesis Card - Nigerian local switch company
 128         { CV_OTHER, "A0000004540011" },             // eTranzact - Nigeria - Etranzact Genesis Card 2 - Nigerian local switch company
 129         { CV_OTHER, "A0000004766C" },               // Google - United States - GOOGLE_PAYMENT_AID
 130         { CV_OTHER, "A0000005241010" },             // RuPay - India - RuPay - RuPay (India)
 131         { CV_OTHER, "A0000006723010" },             // TROY - Turkey - TROY chip credit card - Turkey's Payment Method
 132         { CV_OTHER, "A0000006723020" },             // TROY - Turkey - TROY chip debit card - Turkey's Payment Method
 133         { CV_OTHER, "A0000007705850" },             // Indian Oil Corporation Limited - India - XTRAPOWER Fleet Card Program - Indian Oil’s Pre Paid Program
 134         { CV_OTHER, "D27600002545500100" },         // ZKA - Germany - Girocard - ZKA Girocard (Geldkarte) (Germany)
 135         { CV_OTHER, "D5280050218002" },             // The Netherlands - ? - (Netherlands)
 136         { CV_OTHER, "D5780000021010" },             // Bankaxept    Norway  Bankaxept   Norwegian domestic debit card
 137         { CV_OTHER, "F0000000030001" },             // BRADESCO - Brazilian Bank Banco Bradesco
 138 };
 139 static const size_t AIDlistLen = sizeof(AIDlist)/sizeof(TAIDList);
 140
 141 static bool APDULogging = false;
 142 void SetAPDULogging(bool logging) {
 143         APDULogging = logging;
 144 }
 145
 146 void DropFieldEx(EMVCommandChannel channel) {
 147         if (channel == ECC_CONTACTLESS) {
 148                 DropField();
 149         }
 150 }
 151
 152 enum CardPSVendor GetCardPSVendor(uint8_t * AID, size_t AIDlen) {
 153         char buf[100] = {0};
 154         if (AIDlen < 1)
 155                 return CV_NA;
 156
 157         hex_to_buffer((uint8_t *)buf, AID, AIDlen, sizeof(buf) - 1, 0, 0, true);
 158
 159         for(int i = 0; i < AIDlistLen; i ++) {
 160                 if (strncmp(AIDlist[i].aid, buf, strlen(AIDlist[i].aid)) == 0){
 161                         return AIDlist[i].vendor;
 162                 }
 163         }
 164
 165         return CV_NA;
 166 }
 167
 168 static bool print_cb(void *data, const struct tlv *tlv, int level, bool is_leaf) {
 169         emv_tag_dump(tlv, stdout, level);
 170         if (is_leaf) {
 171                 dump_buffer(tlv->value, tlv->len, stdout, level);
 172         }
 173
 174         return true;
 175 }
 176
 177 bool TLVPrintFromBuffer(uint8_t *data, int datalen) {
 178         struct tlvdb *t = NULL;
 179         t = tlvdb_parse_multi(data, datalen);
 180         if (t) {
 181                 PrintAndLogEx(NORMAL, "-------------------- TLV decoded --------------------");
 182
 183                 tlvdb_visit(t, print_cb, NULL, 0);
 184                 tlvdb_free(t);
 185                 return true;
 186         } else {
 187                 PrintAndLogEx(WARNING, "TLV ERROR: Can't parse response as TLV tree.");
 188         }
 189         return false;
 190 }
 191
 192 void TLVPrintFromTLVLev(struct tlvdb *tlv, int level) {
 193         if (!tlv)
 194                 return;
 195
 196         tlvdb_visit(tlv, print_cb, NULL, level);
 197 }
 198
 199 void TLVPrintFromTLV(struct tlvdb *tlv) {
 200         TLVPrintFromTLVLev(tlv, 0);
 201 }
 202
 203 void TLVPrintAIDlistFromSelectTLV(struct tlvdb *tlv) {
 204         PrintAndLogEx(NORMAL, "|------------------|--------|-------------------------|");
 205         PrintAndLogEx(NORMAL, "|    AID           |Priority| Name                    |");
 206         PrintAndLogEx(NORMAL, "|------------------|--------|-------------------------|");
 207
 208         struct tlvdb *ttmp = tlvdb_find(tlv, 0x6f);
 209         if (!ttmp)
 210                 PrintAndLogEx(NORMAL, "|                         none                        |");
 211
 212         while (ttmp) {
 213                 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x84, NULL);
 214                 const struct tlv *tgName = tlvdb_get_inchild(ttmp, 0x50, NULL);
 215                 const struct tlv *tgPrio = tlvdb_get_inchild(ttmp, 0x87, NULL);
 216                 if (!tgAID)
 217                         break;
 218                 PrintAndLogEx(NORMAL, "|%s|   %s  |%s|",
 219                         sprint_hex_inrow_ex(tgAID->value, tgAID->len, 18),
 220                         (tgPrio) ? sprint_hex(tgPrio->value, 1) : "   ",
 221                         (tgName) ? sprint_ascii_ex(tgName->value, tgName->len, 25) : "                         ");
 222
 223                 ttmp = tlvdb_find_next(ttmp, 0x6f);
 224         }
 225
 226         PrintAndLogEx(NORMAL, "|------------------|--------|-------------------------|");
 227 }
 228
 229 struct tlvdb *GetPANFromTrack2(const struct tlv *track2) {
 230         char track2Hex[200] = {0};
 231         uint8_t PAN[100] = {0};
 232         int PANlen = 0;
 233         char *tmp = track2Hex;
 234
 235         if (!track2)
 236                 return NULL;
 237
 238         for (int i = 0; i < track2->len; ++i, tmp += 2)
 239                 sprintf(tmp, "%02x", (unsigned int)track2->value[i]);
 240
 241         int posD = strchr(track2Hex, 'd') - track2Hex;
 242         if (posD < 1)
 243                 return NULL;
 244
 245         track2Hex[posD] = 0;
 246         if (strlen(track2Hex) % 2) {
 247                 track2Hex[posD] = 'F';
 248                 track2Hex[posD + 1] = '\0';
 249         }
 250
 251         param_gethex_to_eol(track2Hex, 0, PAN, sizeof(PAN), &PANlen);
 252
 253   return tlvdb_fixed(0x5a, PANlen, PAN);
 254 }
 255
 256 struct tlvdb *GetdCVVRawFromTrack2(const struct tlv *track2) {
 257         char track2Hex[200] = {0};
 258         char dCVVHex[100] = {0};
 259         uint8_t dCVV[100] = {0};
 260         int dCVVlen = 0;
 261         const int PINlen = 5; // must calculated from 9F67 MSD Offset but i have not seen this tag)
 262         char *tmp = track2Hex;
 263
 264         if (!track2)
 265                 return NULL;
 266
 267         for (int i = 0; i < track2->len; ++i, tmp += 2)
 268                 sprintf(tmp, "%02x", (unsigned int)track2->value[i]);
 269
 270         int posD = strchr(track2Hex, 'd') - track2Hex;
 271         if (posD < 1)
 272                 return NULL;
 273
 274         memset(dCVVHex, '0', 32);
 275         // ATC
 276         memcpy(dCVVHex + 0, track2Hex + posD + PINlen + 11, 4);
 277         // PAN 5 hex
 278         memcpy(dCVVHex + 4, track2Hex, 5);
 279         // expire date
 280         memcpy(dCVVHex + 9, track2Hex + posD + 1, 4);
 281         // service code
 282         memcpy(dCVVHex + 13, track2Hex + posD + 5, 3);
 283
 284         param_gethex_to_eol(dCVVHex, 0, dCVV, sizeof(dCVV), &dCVVlen);
 285
 286   return tlvdb_fixed(0x02, dCVVlen, dCVV);
 287 }
 288
 289
 290 int EMVExchangeEx(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t *apdu, int apdu_len, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
 291 {
 292         *ResultLen = 0;
 293         if (sw) *sw = 0;
 294         uint16_t isw = 0;
 295         int res = 0;
 296
 297         if (ActivateField) {
 298                 DropFieldEx( channel );
 299                 msleep(50);
 300         }
 301
 302         if (APDULogging)
 303                 PrintAndLogEx(SUCCESS, ">>>> %s", sprint_hex(apdu, apdu_len));
 304
 305 #ifdef WITH_SMARTCARD
 306         switch(channel) {
 307                 case ECC_CONTACTLESS:
 308                         // 6 byes + data = INS + CLA + P1 + P2 + Lc + <data = Nc> + Le(?IncludeLe)
 309                         res = ExchangeAPDU14a(apdu, apdu_len, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
 310                         break;
 311                 case ECC_CONTACT:
 312                         res = ExchangeAPDUSC(apdu, apdu_len, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
 313                         break;
 314         }
 315 #else
 316         res = ExchangeAPDU14a(apdu, apdu_len, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
 317 #endif
 318
 319         if (res) {
 320                 return res;
 321         }
 322
 323         if (APDULogging)
 324                 PrintAndLogEx(SUCCESS, "<<<< %s", sprint_hex(Result, *ResultLen));
 325
 326         if (*ResultLen < 2) {
 327                 return 200;
 328         }
 329
 330         if (Result[*ResultLen-2] == 0x61) {
 331                 uint8_t La = Result[*ResultLen-1];
 332                 uint8_t get_response[5] = {apdu[0], ISO7816_GET_RESPONSE, 0x00, 0x00, La};
 333                 size_t oldlen = *ResultLen;
 334                 res = EMVExchangeEx(channel, false, LeaveFieldON, get_response, sizeof(get_response), &Result[oldlen-2], MaxResultLen-oldlen+2, ResultLen, sw, tlv);
 335                 *ResultLen += oldlen;
 336         }
 337
 338         if (res) return res;
 339
 340         *ResultLen -= 2;
 341
 342         isw = Result[*ResultLen] * 0x0100 + Result[*ResultLen + 1];
 343         if (sw)
 344                 *sw = isw;
 345
 346         if (isw != 0x9000) {
 347                 if (APDULogging) {
 348                         PrintAndLogEx(ERR, "APDU(%02x%02x) ERROR: [%4X] %s", apdu[0], apdu[1], isw, GetAPDUCodeDescription(*sw >> 8, *sw & 0xff));
 349                         return 5;
 350                 }
 351         }
 352
 353         // add to tlv tree
 354         if (tlv) {
 355                 struct tlvdb *t = tlvdb_parse_multi(Result, *ResultLen);
 356                 tlvdb_add(tlv, t);
 357         }
 358
 359         return 0;
 360 }
 361
 362 static int EMVExchange(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *apdu, int apdu_len, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
 363 {
 364         uint8_t APDU[APDU_COMMAND_LEN];
 365         memcpy(APDU, apdu, apdu_len);
 366         APDU[apdu_len] = 0x00;
 367         if (channel == ECC_CONTACTLESS) {
 368                 if (apdu_len == 5) {
 369                         // there is no Lc but an Le already
 370                 } else if (apdu_len > 5 && apdu_len == 5 + apdu[4] + 1) {
 371                         // there is Lc, data and Le
 372                 } else {
 373                         apdu_len++; // no Le, add Le = 0x00 because some vendors require it for contactless
 374                 }
 375         }
 376         return EMVExchangeEx(channel, false, LeaveFieldON, APDU, apdu_len, Result, MaxResultLen, ResultLen, sw, tlv);
 377 }
 378
 379 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)
 380 {
 381         uint8_t Select_APDU[APDU_COMMAND_LEN] = {0x00, ISO7816_SELECT_FILE, 0x04, 0x00, AIDLen, 0x00};
 382         memcpy(Select_APDU + 5, AID, AIDLen);
 383         int apdulen = 5 + AIDLen;
 384         if (channel == ECC_CONTACTLESS) {
 385                 apdulen++;  // some vendors require Le = 0x00 for contactless operations
 386         }
 387         return EMVExchangeEx(channel, ActivateField, LeaveFieldON, Select_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
 388 }
 389
 390 int EMVSelectPSE(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t PSENum, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw) {
 391         uint8_t buf[APDU_DATA_LEN] = {0};
 392         *ResultLen = 0;
 393         int len = 0;
 394         int res = 0;
 395         switch (PSENum) {
 396                 case 1:
 397                         param_gethex_to_eol(PSElist[1], 0, buf, sizeof(buf), &len);
 398                         break;
 399                 case 2:
 400
 401                         param_gethex_to_eol(PSElist[0], 0, buf, sizeof(buf), &len);
 402                         break;
 403                 default:
 404                         return -1;
 405         }
 406
 407         // select
 408         res = EMVSelect(channel, ActivateField, LeaveFieldON, buf, len, Result, MaxResultLen, ResultLen, sw, NULL);
 409
 410         return res;
 411 }
 412
 413
 414 int EMVSelectWithRetry(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) {
 415         int retrycnt = 0;
 416         int res = 0;
 417         do {
 418                 res = EMVSelect(channel, false, true, AID, AIDLen, Result, MaxResultLen, ResultLen, sw, tlv);
 419
 420                 // retry if error and not returned sw error
 421                 if (res && res != 5) {
 422                         if (++retrycnt < 3){
 423                                 continue;
 424                         } else {
 425                                 // card select error, proxmark error
 426                                 if (res == 1) {
 427                                         PrintAndLogEx(WARNING, "Exit...");
 428                                         return 1;
 429                                 }
 430
 431                                 retrycnt = 0;
 432                                 PrintAndLogEx(NORMAL, "Retry failed [%s]. Skiped...", sprint_hex_inrow(AID, AIDLen));
 433                                 return res;
 434                         }
 435                 }
 436         } while (res && res != 5);
 437
 438         return res;
 439 }
 440
 441
 442 int EMVCheckAID(EMVCommandChannel channel, bool decodeTLV, struct tlvdb *tlvdbelm, struct tlvdb *tlv){
 443         uint8_t data[APDU_RESPONSE_LEN] = {0};
 444         size_t datalen = 0;
 445         int res = 0;
 446         uint16_t sw = 0;
 447
 448         while (tlvdbelm) {
 449                 const struct tlv *tgAID = tlvdb_get_inchild(tlvdbelm, 0x4f, NULL);
 450                 if (tgAID) {
 451                         res = EMVSelectWithRetry(channel, false, true, (uint8_t *)tgAID->value, tgAID->len, data, sizeof(data), &datalen, &sw, tlv);
 452
 453                         // if returned sw error
 454                         if (res == 5) {
 455                                 // next element
 456                                 tlvdbelm = tlvdb_find_next(tlvdbelm, 0x61);
 457                                 continue;
 458                         }
 459
 460                         if (res)
 461                                 break;
 462
 463                         // all is ok
 464                         if (decodeTLV){
 465                                 PrintAndLogEx(NORMAL, "%s:", sprint_hex_inrow(tgAID->value, tgAID->len));
 466                                 TLVPrintFromBuffer(data, datalen);
 467                         }
 468                 }
 469                 tlvdbelm = tlvdb_find_next(tlvdbelm, 0x61);
 470         }
 471         return res;
 472 }
 473
 474
 475 int EMVSearchPSE(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t PSENum, bool decodeTLV, struct tlvdb *tlv) {
 476         uint8_t data[APDU_RESPONSE_LEN] = {0};
 477         size_t datalen = 0;
 478         uint8_t sfidata[0x11][APDU_RESPONSE_LEN] = {0};
 479         size_t sfidatalen[0x11] = {0};
 480         uint16_t sw = 0;
 481         int res;
 482         bool fileFound = false;
 483
 484         char *PSE_or_PPSE = PSENum == 1 ? "PSE" : "PPSE";
 485
 486         // select PPSE
 487         res = EMVSelectPSE(channel, ActivateField, true, PSENum, data, sizeof(data), &datalen, &sw);
 488
 489         if (!res){
 490                 if (sw != 0x9000) {
 491                         PrintAndLogEx(FAILED, "Select PSE error. APDU error: %04x.", sw);
 492                         return 1;
 493                 }
 494
 495                 struct tlvdb *t = NULL;
 496                 t = tlvdb_parse_multi(data, datalen);
 497                 if (t) {
 498                         // PSE/PPSE with SFI
 499                         struct tlvdb *tsfi = tlvdb_find_path(t, (tlv_tag_t[]){0x6f, 0xa5, 0x88, 0x00});
 500                         if (tsfi) {
 501                                 uint8_t sfin = 0;
 502                                 tlv_get_uint8(tlvdb_get_tlv(tsfi), &sfin);
 503                                 PrintAndLogEx(INFO, "* PPSE get SFI: 0x%02x.", sfin);
 504
 505                                 for (uint8_t ui = 0x01; ui <= 0x10; ui++) {
 506                                         PrintAndLogEx(INFO, "* * Get SFI: 0x%02x. num: 0x%02x", sfin, ui);
 507                                         res = EMVReadRecord(channel, true, sfin, ui, sfidata[ui], APDU_RESPONSE_LEN, &sfidatalen[ui], &sw, NULL);
 508
 509                                         // end of records
 510                                         if (sw == 0x6a83) {
 511                                                 sfidatalen[ui] = 0;
 512                                                 PrintAndLogEx(INFO, "* * PPSE get SFI. End of records.");
 513                                                 break;
 514                                         }
 515
 516                                         // error catch!
 517                                         if (sw != 0x9000) {
 518                                                 sfidatalen[ui] = 0;
 519                                                 PrintAndLogEx(FAILED, "PPSE get Error. APDU error: %04x.", sw);
 520                                                 break;
 521                                         }
 522
 523                                         if (decodeTLV){
 524                                                 TLVPrintFromBuffer(sfidata[ui], sfidatalen[ui]);
 525                                         }
 526                                 }
 527
 528                                 for (uint8_t ui = 0x01; ui <= 0x10; ui++) {
 529                                         if (sfidatalen[ui]) {
 530                                                 struct tlvdb *tsfi = NULL;
 531                                                 tsfi = tlvdb_parse_multi(sfidata[ui], sfidatalen[ui]);
 532                                                 if (tsfi) {
 533                                                         struct tlvdb *tsfitmp = tlvdb_find_path(tsfi, (tlv_tag_t[]){0x70, 0x61, 0x00});
 534                                                         if (!tsfitmp) {
 535                                                                 PrintAndLogEx(FAILED, "SFI 0x%02d doesn't have any records.", sfidatalen[ui]);
 536                                                                 continue;
 537                                                         }
 538                                                         res = EMVCheckAID(channel, decodeTLV, tsfitmp, tlv);
 539                                                         fileFound = true;
 540                                                 }
 541                                                 tlvdb_free(tsfi);
 542                                         }
 543                                 }
 544                         }
 545
 546
 547                         // PSE/PPSE plain (wo SFI)
 548                         struct tlvdb *ttmp = tlvdb_find_path(t, (tlv_tag_t[]){0x6f, 0xa5, 0xbf0c, 0x61, 0x00});
 549                         if (ttmp) {
 550                                 res = EMVCheckAID(channel, decodeTLV, ttmp, tlv);
 551                                 fileFound = true;
 552                         }
 553
 554                         if (!fileFound)
 555                                 PrintAndLogEx(FAILED, "PPSE doesn't have any records.");
 556
 557                         tlvdb_free(t);
 558                 } else {
 559                         PrintAndLogEx(WARNING, "%s ERROR: Can't get TLV from response.", PSE_or_PPSE);
 560                 }
 561         } else {
 562                 PrintAndLogEx(WARNING, "%s ERROR: Can't select PPSE AID. Error: %d", PSE_or_PPSE, res);
 563         }
 564
 565         if (!LeaveFieldON)
 566                 DropFieldEx( channel );
 567
 568         return res;
 569 }
 570
 571 int EMVSearch(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvdb *tlv) {
 572         uint8_t aidbuf[APDU_DATA_LEN] = {0};
 573         int aidlen = 0;
 574         uint8_t data[APDU_RESPONSE_LEN] = {0};
 575         size_t datalen = 0;
 576         uint16_t sw = 0;
 577
 578         int res = 0;
 579         int retrycnt = 0;
 580         for(int i = 0; i < AIDlistLen; i ++) {
 581                 param_gethex_to_eol(AIDlist[i].aid, 0, aidbuf, sizeof(aidbuf), &aidlen);
 582                 res = EMVSelect(channel, (i == 0) ? ActivateField : false, true, aidbuf, aidlen, data, sizeof(data), &datalen, &sw, tlv);
 583                 // retry if error and not returned sw error
 584                 if (res && res != 5) {
 585                         if (++retrycnt < 3){
 586                                 i--;
 587                         } else {
 588                                 // (1) - card select error, (4) reply timeout, (200) - result length = 0
 589                                 if (res == 1 || res == 4 || res == 200) {
 590                                         if (!LeaveFieldON)
 591                                                 DropFieldEx(channel);
 592                                         PrintAndLogEx(WARNING, "Exit...");
 593                                         return 1;
 594                                 }
 595
 596                                 retrycnt = 0;
 597                                 PrintAndLogEx(FAILED, "Retry failed [%s]. Skipped...", AIDlist[i].aid);
 598                         }
 599                         continue;
 600                 }
 601                 retrycnt = 0;
 602
 603                 if (res)
 604                         continue;
 605
 606                 if (!datalen)
 607                         continue;
 608
 609                 if (decodeTLV) {
 610                         PrintAndLogEx(SUCCESS, "%s", AIDlist[i].aid);
 611                         TLVPrintFromBuffer(data, datalen);
 612                 }
 613         }
 614
 615         if (!LeaveFieldON)
 616                 DropFieldEx(channel);
 617
 618         return 0;
 619 }
 620
 621 int EMVSelectApplication(struct tlvdb *tlv, uint8_t *AID, size_t *AIDlen) {
 622         // check priority. 0x00 - highest
 623         int prio = 0xffff;
 624
 625         *AIDlen = 0;
 626
 627         struct tlvdb *ttmp = tlvdb_find(tlv, 0x6f);
 628         if (!ttmp)
 629                 return 1;
 630
 631         while (ttmp) {
 632                 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x84, NULL);
 633                 const struct tlv *tgPrio = tlvdb_get_inchild(ttmp, 0x87, NULL);
 634
 635                 if (!tgAID)
 636                         break;
 637
 638                 if (tgPrio) {
 639                         int pt = bytes_to_num((uint8_t*)tgPrio->value, (tgPrio->len < 2) ? tgPrio->len : 2);
 640                         if (pt < prio) {
 641                                 prio = pt;
 642
 643                                 memcpy(AID, tgAID->value, tgAID->len);
 644                                 *AIDlen = tgAID->len;
 645                         }
 646                 } else {
 647                         // takes the first application from list wo priority
 648                         if (!*AIDlen) {
 649                         memcpy(AID, tgAID->value, tgAID->len);
 650                         *AIDlen = tgAID->len;
 651                         }
 652                 }
 653
 654                 ttmp = tlvdb_find_next(ttmp, 0x6f);
 655         }
 656
 657         return 0;
 658 }
 659
 660 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)
 661 {
 662         uint8_t GPO_APDU[APDU_COMMAND_LEN] = {0x80, ISO7816_GET_PROCESSING_OPTIONS, 0x00, 0x00, PDOLLen, 0x00};
 663         memcpy(GPO_APDU + 5, PDOL, PDOLLen);
 664         int apdulen = 5 + PDOLLen;
 665
 666         return EMVExchange(channel, LeaveFieldON, GPO_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
 667 }
 668
 669 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)
 670 {
 671         uint8_t read_APDU[5] = {0x00, ISO7816_READ_RECORDS, SFIrec, (SFI << 3) | 0x04, 0x00};
 672         int res = EMVExchange(channel, LeaveFieldON, read_APDU, sizeof(read_APDU), Result, MaxResultLen, ResultLen, sw, tlv);
 673         if (*sw == 0x6700) {
 674                 PrintAndLogEx(INFO, ">>> trying to reissue command withouth Le...");
 675                 res = EMVExchangeEx(channel, false, LeaveFieldON, read_APDU, sizeof(read_APDU), Result, MaxResultLen, ResultLen, sw, tlv);
 676         }
 677         return res;
 678 }
 679
 680 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)
 681 {
 682         uint8_t CDOL_APDU[APDU_COMMAND_LEN] = {0x80, 0xae, RefControl, 0x00, CDOLLen, 0x00};
 683         memcpy(CDOL_APDU + 5, CDOL, CDOLLen);
 684         int apdulen = 5 + CDOLLen;
 685
 686         return EMVExchange(channel, LeaveFieldON, CDOL_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
 687 }
 688
 689 int EMVGenerateChallenge(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
 690 {
 691         uint8_t get_challenge_APDU[APDU_COMMAND_LEN] = {0x00, ISO7816_GET_CHALLENGE, 0x00, 0x00};
 692
 693         int res = EMVExchange(channel, LeaveFieldON, get_challenge_APDU, 4, Result, MaxResultLen, ResultLen, sw, tlv);
 694         if (*sw == 0x6700) {
 695                 PrintAndLogEx(INFO, ">>> trying to reissue command withouth Le...");
 696                 res = EMVExchangeEx(channel, false, LeaveFieldON, get_challenge_APDU, 4, Result, MaxResultLen, ResultLen, sw, tlv);
 697         }
 698         return res;
 699 }
 700
 701 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)
 702 {
 703         uint8_t authenticate_APDU[APDU_COMMAND_LEN] = {0x00, ISO7816_INTERNAL_AUTHENTICATE, 0x00, 0x00, DDOLLen, 0x00};
 704         memcpy(authenticate_APDU + 5, DDOL, DDOLLen);
 705         int apdulen = 5 + DDOLLen;
 706
 707         return EMVExchange(channel, LeaveFieldON, authenticate_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
 708 }
 709
 710 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)
 711 {
 712         uint8_t checksum_APDU[APDU_COMMAND_LEN] = {0x80, 0x2a, 0x8e, 0x80, UDOLlen, 0x00};
 713         memcpy(checksum_APDU + 5, UDOL, UDOLlen);
 714         int apdulen = 5 + UDOLlen;
 715
 716         return EMVExchange(channel, LeaveFieldON, checksum_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
 717 }
 718
 719 // Authentication
 720 struct emv_pk *get_ca_pk(struct tlvdb *db) {
 721         const struct tlv *df_tlv = tlvdb_get(db, 0x84, NULL);
 722         const struct tlv *caidx_tlv = tlvdb_get(db, 0x8f, NULL);
 723
 724         if (!df_tlv || !caidx_tlv || df_tlv->len < 6 || caidx_tlv->len != 1)
 725                 return NULL;
 726
 727         PrintAndLogEx(NORMAL, "CA Public Key index 0x%0x", caidx_tlv->value[0]);
 728         return emv_pk_get_ca_pk(df_tlv->value, caidx_tlv->value[0]);
 729 }
 730
 731 int trSDA(struct tlvdb *tlv) {
 732
 733         struct emv_pk *pk = get_ca_pk(tlv);
 734         if (!pk) {
 735                 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
 736                 return 2;
 737         }
 738
 739         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
 740         if (!issuer_pk) {
 741                 emv_pk_free(pk);
 742                 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
 743                 return 2;
 744         }
 745
 746         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx",
 747                 issuer_pk->rid[0],
 748                 issuer_pk->rid[1],
 749                 issuer_pk->rid[2],
 750                 issuer_pk->rid[3],
 751                 issuer_pk->rid[4],
 752                 issuer_pk->index,
 753                 issuer_pk->serial[0],
 754                 issuer_pk->serial[1],
 755                 issuer_pk->serial[2]
 756                 );
 757
 758         const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
 759         if (!sda_tlv || sda_tlv->len < 1) {
 760                 emv_pk_free(issuer_pk);
 761                 emv_pk_free(pk);
 762                 PrintAndLogEx(WARNING, "Can't find input list for Offline Data Authentication. Exit.");
 763                 return 3;
 764         }
 765
 766         struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
 767         if (dac_db) {
 768                 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
 769                 PrintAndLogEx(NORMAL, "SDA verified OK. (Data Authentication Code: %02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]);
 770                 tlvdb_add(tlv, dac_db);
 771         } else {
 772                 emv_pk_free(issuer_pk);
 773                 emv_pk_free(pk);
 774                 PrintAndLogEx(WARNING, "SSAD verify error");
 775                 return 4;
 776         }
 777
 778         emv_pk_free(issuer_pk);
 779         emv_pk_free(pk);
 780         return 0;
 781 }
 782
 783 static const unsigned char default_ddol_value[] = {0x9f, 0x37, 0x04};
 784 static struct tlv default_ddol_tlv = {.tag = 0x9f49, .len = 3, .value = default_ddol_value };
 785
 786 int trDDA(EMVCommandChannel channel, bool decodeTLV, struct tlvdb *tlv) {
 787         uint8_t buf[APDU_RESPONSE_LEN] = {0};
 788         size_t len = 0;
 789         uint16_t sw = 0;
 790
 791         struct emv_pk *pk = get_ca_pk(tlv);
 792         if (!pk) {
 793                 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
 794                 return 2;
 795         }
 796
 797         const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
 798 /*  if (!sda_tlv || sda_tlv->len < 1) { it may be 0!!!!
 799                 emv_pk_free(pk);
 800                 PrintAndLogEx(WARNING, "Error: Can't find input list for Offline Data Authentication. Exit.");
 801                 return 3;
 802         }
 803 */
 804         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
 805         if (!issuer_pk) {
 806                 emv_pk_free(pk);
 807                 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
 808                 return 2;
 809         }
 810         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 811                         issuer_pk->rid[0],
 812                         issuer_pk->rid[1],
 813                         issuer_pk->rid[2],
 814                         issuer_pk->rid[3],
 815                         issuer_pk->rid[4],
 816                         issuer_pk->index,
 817                         issuer_pk->serial[0],
 818                         issuer_pk->serial[1],
 819                         issuer_pk->serial[2]
 820                         );
 821
 822         struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
 823         if (!icc_pk) {
 824                 emv_pk_free(pk);
 825                 emv_pk_free(issuer_pk);
 826                 PrintAndLogEx(WARNING, "Error: ICC certificate not found. Exit.");
 827                 return 2;
 828         }
 829         PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 830                         icc_pk->rid[0],
 831                         icc_pk->rid[1],
 832                         icc_pk->rid[2],
 833                         icc_pk->rid[3],
 834                         icc_pk->rid[4],
 835                         icc_pk->index,
 836                         icc_pk->serial[0],
 837                         icc_pk->serial[1],
 838                         icc_pk->serial[2]
 839                         );
 840
 841         if (tlvdb_get(tlv, 0x9f2d, NULL)) {
 842                 struct emv_pk *icc_pe_pk = emv_pki_recover_icc_pe_cert(issuer_pk, tlv);
 843                 if (!icc_pe_pk) {
 844                         PrintAndLogEx(WARNING, "WARNING: ICC PE PK recover error. ");
 845                 } else {
 846                         PrintAndLogEx(SUCCESS, "ICC PE PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 847                                         icc_pe_pk->rid[0],
 848                                         icc_pe_pk->rid[1],
 849                                         icc_pe_pk->rid[2],
 850                                         icc_pe_pk->rid[3],
 851                                         icc_pe_pk->rid[4],
 852                                         icc_pe_pk->index,
 853                                         icc_pe_pk->serial[0],
 854                                         icc_pe_pk->serial[1],
 855                                         icc_pe_pk->serial[2]
 856                                         );
 857                 }
 858         } else {
 859                 PrintAndLogEx(INFO, "ICC PE PK (PIN Encipherment Public Key Certificate) not found.\n");
 860         }
 861
 862         // 9F4B: Signed Dynamic Application Data
 863         const struct tlv *sdad_tlv = tlvdb_get(tlv, 0x9f4b, NULL);
 864         // DDA with internal authenticate OR fDDA with filled 0x9F4B tag (GPO result)
 865         // EMV kernel3 v2.4, contactless book C-3, C.1., page 147
 866         if (sdad_tlv) {
 867                 PrintAndLogEx(NORMAL, "\n* * Got Signed Dynamic Application Data (9F4B) form GPO. Maybe fDDA...");
 868
 869                 const struct tlvdb *atc_db = emv_pki_recover_atc_ex(icc_pk, tlv, true);
 870                 if (!atc_db) {
 871                         PrintAndLogEx(WARNING, "Error: Can't recover IDN (ICC Dynamic Number)");
 872                         emv_pk_free(pk);
 873                         emv_pk_free(issuer_pk);
 874                         emv_pk_free(icc_pk);
 875                         return 8;
 876                 }
 877
 878                 // 9f36 Application Transaction Counter (ATC)
 879                 const struct tlv *atc_tlv = tlvdb_get(atc_db, 0x9f36, NULL);
 880                 if(atc_tlv) {
 881                         PrintAndLogEx(NORMAL, "\nATC (Application Transaction Counter) [%zu] %s", atc_tlv->len, sprint_hex_inrow(atc_tlv->value, atc_tlv->len));
 882
 883                         const struct tlv *core_atc_tlv = tlvdb_get(tlv, 0x9f36, NULL);
 884                         if(tlv_equal(core_atc_tlv, atc_tlv)) {
 885                                 PrintAndLogEx(SUCCESS, "ATC check OK.");
 886                                 PrintAndLogEx(SUCCESS, "fDDA (fast DDA) verified OK.");
 887                         } else {
 888                                 PrintAndLogEx(WARNING, "Error: fDDA verified, but ATC in the certificate and ATC in the record not the same.");
 889                         }
 890                 } else {
 891                         PrintAndLogEx(NORMAL, "\nERROR: fDDA (fast DDA) verify error");
 892                         emv_pk_free(pk);
 893                         emv_pk_free(issuer_pk);
 894                         emv_pk_free(icc_pk);
 895                         return 9;
 896                 }
 897         } else {
 898                 struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
 899                 if (dac_db) {
 900                         const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
 901                         PrintAndLogEx(NORMAL, "SDAD verified OK. (Data Authentication Code: %02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]);
 902                         tlvdb_add(tlv, dac_db);
 903                 } else {
 904                         PrintAndLogEx(WARNING, "Error: SSAD verify error");
 905                         emv_pk_free(pk);
 906                         emv_pk_free(issuer_pk);
 907                         emv_pk_free(icc_pk);
 908                         return 4;
 909                 }
 910
 911                 PrintAndLogEx(NORMAL, "\n* Calc DDOL");
 912                 const struct tlv *ddol_tlv = tlvdb_get(tlv, 0x9f49, NULL);
 913                 if (!ddol_tlv) {
 914                         ddol_tlv = &default_ddol_tlv;
 915                         PrintAndLogEx(NORMAL, "DDOL [9f49] not found. Using default DDOL");
 916                 }
 917
 918                 struct tlv *ddol_data_tlv = dol_process(ddol_tlv, tlv, 0);
 919                 if (!ddol_data_tlv) {
 920                         PrintAndLogEx(WARNING, "Error: Can't create DDOL TLV");
 921                         emv_pk_free(pk);
 922                         emv_pk_free(issuer_pk);
 923                         emv_pk_free(icc_pk);
 924                         return 5;
 925                 }
 926
 927                 PrintAndLogEx(NORMAL, "DDOL data[%d]: %s", ddol_data_tlv->len, sprint_hex(ddol_data_tlv->value, ddol_data_tlv->len));
 928
 929                 PrintAndLogEx(NORMAL, "\n* Internal Authenticate");
 930                 int res = EMVInternalAuthenticate(channel, true, (uint8_t *)ddol_data_tlv->value, ddol_data_tlv->len, buf, sizeof(buf), &len, &sw, NULL);
 931                 if (res) {
 932                         PrintAndLogEx(WARNING, "Internal Authenticate error(%d): %4x. Exit...", res, sw);
 933                         free(ddol_data_tlv);
 934                         emv_pk_free(pk);
 935                         emv_pk_free(issuer_pk);
 936                         emv_pk_free(icc_pk);
 937                         return 6;
 938                 }
 939
 940                 struct tlvdb *dda_db = NULL;
 941                 if (buf[0] == 0x80) {
 942                         if (len < 3 ) {
 943                                 PrintAndLogEx(WARNING, "Error: Internal Authenticate format1 parsing error. length=%d", len);
 944                         } else {
 945                                 // parse response 0x80
 946                                 struct tlvdb *t80 = tlvdb_parse_multi(buf, len);
 947                                 const struct tlv * t80tlv = tlvdb_get_tlv(t80);
 948
 949                                 // 9f4b Signed Dynamic Application Data
 950                                 dda_db = tlvdb_fixed(0x9f4b, t80tlv->len, t80tlv->value);
 951                                 tlvdb_add(tlv, dda_db);
 952
 953                                 tlvdb_free(t80);
 954
 955                                 if (decodeTLV){
 956                                         PrintAndLogEx(NORMAL, "* * Decode response format 1:");
 957                                         TLVPrintFromTLV(dda_db);
 958                                 }
 959                         }
 960                 } else {
 961                         dda_db = tlvdb_parse_multi(buf, len);
 962                         if(!dda_db) {
 963                                 PrintAndLogEx(WARNING, "Error: Can't parse Internal Authenticate result as TLV");
 964                                 free(ddol_data_tlv);
 965                                 emv_pk_free(pk);
 966                                 emv_pk_free(issuer_pk);
 967                                 emv_pk_free(icc_pk);
 968                                 return 7;
 969                         }
 970                         tlvdb_add(tlv, dda_db);
 971
 972                         if (decodeTLV)
 973                                 TLVPrintFromTLV(dda_db);
 974                 }
 975
 976                 struct tlvdb *idn_db = emv_pki_recover_idn_ex(icc_pk, dda_db, ddol_data_tlv, true);
 977                 free(ddol_data_tlv);
 978                 if (!idn_db) {
 979                         PrintAndLogEx(WARNING, "Error: Can't recover IDN (ICC Dynamic Number)");
 980                         tlvdb_free(dda_db);
 981                         emv_pk_free(pk);
 982                         emv_pk_free(issuer_pk);
 983                         emv_pk_free(icc_pk);
 984                         return 8;
 985                 }
 986                 tlvdb_free(dda_db);
 987
 988                 // 9f4c ICC Dynamic Number
 989                 const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL);
 990                 if(idn_tlv) {
 991                         PrintAndLogEx(NORMAL, "\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len));
 992                         PrintAndLogEx(NORMAL, "DDA verified OK.");
 993                         tlvdb_add(tlv, idn_db);
 994                         tlvdb_free(idn_db);
 995                 } else {
 996                         PrintAndLogEx(NORMAL, "\nERROR: DDA verify error");
 997                         tlvdb_free(idn_db);
 998
 999                         emv_pk_free(pk);
1000                         emv_pk_free(issuer_pk);
1001                         emv_pk_free(icc_pk);
1002                         return 9;
1003                 }
1004         }
1005
1006         emv_pk_free(pk);
1007         emv_pk_free(issuer_pk);
1008         emv_pk_free(icc_pk);
1009         return 0;
1010 }
1011
1012 int trCDA(struct tlvdb *tlv, struct tlvdb *ac_tlv, struct tlv *pdol_data_tlv, struct tlv *ac_data_tlv) {
1013
1014         struct emv_pk *pk = get_ca_pk(tlv);
1015         if (!pk) {
1016                 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
1017                 return 2;
1018         }
1019
1020         const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
1021         if (!sda_tlv || sda_tlv->len < 1) {
1022                 PrintAndLogEx(WARNING, "Error: Can't find input list for Offline Data Authentication. Exit.");
1023                 emv_pk_free(pk);
1024                 return 3;
1025         }
1026
1027         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
1028         if (!issuer_pk) {
1029                 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
1030                 emv_pk_free(pk);
1031                 return 2;
1032         }
1033         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
1034                         issuer_pk->rid[0],
1035                         issuer_pk->rid[1],
1036                         issuer_pk->rid[2],
1037                         issuer_pk->rid[3],
1038                         issuer_pk->rid[4],
1039                         issuer_pk->index,
1040                         issuer_pk->serial[0],
1041                         issuer_pk->serial[1],
1042                         issuer_pk->serial[2]
1043                         );
1044
1045         struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
1046         if (!icc_pk) {
1047                 PrintAndLogEx(WARNING, "Error: ICC certificate not found. Exit.");
1048                 emv_pk_free(pk);
1049                 emv_pk_free(issuer_pk);
1050                 return 2;
1051         }
1052         PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
1053                         icc_pk->rid[0],
1054                         icc_pk->rid[1],
1055                         icc_pk->rid[2],
1056                         icc_pk->rid[3],
1057                         icc_pk->rid[4],
1058                         icc_pk->index,
1059                         icc_pk->serial[0],
1060                         icc_pk->serial[1],
1061                         icc_pk->serial[2]
1062                         );
1063
1064         struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
1065         if (dac_db) {
1066                 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
1067                 PrintAndLogEx(NORMAL, "SSAD verified OK. (%02hhx:%02hhx)", dac_tlv->value[0], dac_tlv->value[1]);
1068                 tlvdb_add(tlv, dac_db);
1069         } else {
1070                 PrintAndLogEx(WARNING, "Error: SSAD verify error");
1071                 emv_pk_free(pk);
1072                 emv_pk_free(issuer_pk);
1073                 emv_pk_free(icc_pk);
1074                 return 4;
1075         }
1076
1077         PrintAndLogEx(NORMAL, "\n* * Check Signed Dynamic Application Data (SDAD)");
1078         struct tlvdb *idn_db = emv_pki_perform_cda_ex(icc_pk, tlv, ac_tlv,
1079                         pdol_data_tlv, // pdol
1080                         ac_data_tlv,   // cdol1
1081                         NULL,          // cdol2
1082                         true);
1083         if (idn_db) {
1084                 const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL);
1085                 PrintAndLogEx(NORMAL, "\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len));
1086                 PrintAndLogEx(NORMAL, "CDA verified OK.");
1087                 tlvdb_add(tlv, idn_db);
1088         } else {
1089                 PrintAndLogEx(NORMAL, "\nERROR: CDA verify error");
1090         }
1091
1092         emv_pk_free(pk);
1093         emv_pk_free(issuer_pk);
1094         emv_pk_free(icc_pk);
1095         return 0;
1096 }
1097
1098 int RecoveryCertificates(struct tlvdb *tlvRoot, json_t *root) {
1099
1100         struct emv_pk *pk = get_ca_pk(tlvRoot);
1101         if (!pk) {
1102                 PrintAndLog("ERROR: Key not found. Exit.");
1103                 return 1;
1104         }
1105
1106         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlvRoot);
1107         if (!issuer_pk) {
1108                 emv_pk_free(pk);
1109                 PrintAndLog("WARNING: Issuer certificate not found. Exit.");
1110                 return 2;
1111         }
1112         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx",
1113                         issuer_pk->rid[0],
1114                         issuer_pk->rid[1],
1115                         issuer_pk->rid[2],
1116                         issuer_pk->rid[3],
1117                         issuer_pk->rid[4],
1118                         issuer_pk->index,
1119                         issuer_pk->serial[0],
1120                         issuer_pk->serial[1],
1121                         issuer_pk->serial[2]
1122                         );
1123
1124         JsonSaveBufAsHex(root, "$.ApplicationData.RID", issuer_pk->rid, 5);
1125
1126         char *issuer_pk_c = emv_pk_dump_pk(issuer_pk);
1127         JsonSaveStr(root, "$.ApplicationData.IssuerPublicKeyDec", issuer_pk_c);
1128         JsonSaveBufAsHex(root, "$.ApplicationData.IssuerPublicKeyModulus", issuer_pk->modulus, issuer_pk->mlen);
1129         free(issuer_pk_c);
1130
1131         struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlvRoot, NULL);
1132         if (!icc_pk) {
1133                 emv_pk_free(pk);
1134                 emv_pk_free(issuer_pk);
1135                 PrintAndLogEx(WARNING, "WARNING: ICC certificate not found. Exit.");
1136                 return 2;
1137         }
1138         PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
1139                         icc_pk->rid[0],
1140                         icc_pk->rid[1],
1141                         icc_pk->rid[2],
1142                         icc_pk->rid[3],
1143                         icc_pk->rid[4],
1144                         icc_pk->index,
1145                         icc_pk->serial[0],
1146                         icc_pk->serial[1],
1147                         icc_pk->serial[2]
1148                         );
1149
1150         char *icc_pk_c = emv_pk_dump_pk(icc_pk);
1151         JsonSaveStr(root, "$.ApplicationData.ICCPublicKeyDec", icc_pk_c);
1152         JsonSaveBufAsHex(root, "$.ApplicationData.ICCPublicKeyModulus", icc_pk->modulus, icc_pk->mlen);
1153         free(issuer_pk_c);
1154
1155         return 0;
1156 }