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, (i == AIDlistLen - 1) ? LeaveFieldON : 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, proxmark error OR (200) - result length = 0
 589                                 if (res == 1 || res == 200) {
 590                                         PrintAndLogEx(WARNING, "Exit...");
 591                                         return 1;
 592                                 }
 593
 594                                 retrycnt = 0;
 595                                 PrintAndLogEx(FAILED, "Retry failed [%s]. Skipped...", AIDlist[i].aid);
 596                         }
 597                         continue;
 598                 }
 599                 retrycnt = 0;
 600
 601                 if (res)
 602                         continue;
 603
 604                 if (!datalen)
 605                         continue;
 606
 607                 if (decodeTLV) {
 608                         PrintAndLogEx(SUCCESS, "%s", AIDlist[i].aid);
 609                         TLVPrintFromBuffer(data, datalen);
 610                 }
 611         }
 612
 613         return 0;
 614 }
 615
 616 int EMVSelectApplication(struct tlvdb *tlv, uint8_t *AID, size_t *AIDlen) {
 617         // check priority. 0x00 - highest
 618         int prio = 0xffff;
 619
 620         *AIDlen = 0;
 621
 622         struct tlvdb *ttmp = tlvdb_find(tlv, 0x6f);
 623         if (!ttmp)
 624                 return 1;
 625
 626         while (ttmp) {
 627                 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x84, NULL);
 628                 const struct tlv *tgPrio = tlvdb_get_inchild(ttmp, 0x87, NULL);
 629
 630                 if (!tgAID)
 631                         break;
 632
 633                 if (tgPrio) {
 634                         int pt = bytes_to_num((uint8_t*)tgPrio->value, (tgPrio->len < 2) ? tgPrio->len : 2);
 635                         if (pt < prio) {
 636                                 prio = pt;
 637
 638                                 memcpy(AID, tgAID->value, tgAID->len);
 639                                 *AIDlen = tgAID->len;
 640                         }
 641                 } else {
 642                         // takes the first application from list wo priority
 643                         if (!*AIDlen) {
 644                         memcpy(AID, tgAID->value, tgAID->len);
 645                         *AIDlen = tgAID->len;
 646                         }
 647                 }
 648
 649                 ttmp = tlvdb_find_next(ttmp, 0x6f);
 650         }
 651
 652         return 0;
 653 }
 654
 655 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)
 656 {
 657         uint8_t GPO_APDU[APDU_COMMAND_LEN] = {0x80, ISO7816_GET_PROCESSING_OPTIONS, 0x00, 0x00, PDOLLen, 0x00};
 658         memcpy(GPO_APDU + 5, PDOL, PDOLLen);
 659         int apdulen = 5 + PDOLLen;
 660
 661         return EMVExchange(channel, LeaveFieldON, GPO_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
 662 }
 663
 664 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)
 665 {
 666         uint8_t read_APDU[5] = {0x00, ISO7816_READ_RECORDS, SFIrec, (SFI << 3) | 0x04, 0x00};
 667         int res = EMVExchange(channel, LeaveFieldON, read_APDU, sizeof(read_APDU), Result, MaxResultLen, ResultLen, sw, tlv);
 668         if (*sw == 0x6700) {
 669                 PrintAndLogEx(INFO, ">>> trying to reissue command withouth Le...");
 670                 res = EMVExchangeEx(channel, false, LeaveFieldON, read_APDU, sizeof(read_APDU), Result, MaxResultLen, ResultLen, sw, tlv);
 671         }
 672         return res;
 673 }
 674
 675 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)
 676 {
 677         uint8_t CDOL_APDU[APDU_COMMAND_LEN] = {0x80, 0xae, RefControl, 0x00, CDOLLen, 0x00};
 678         memcpy(CDOL_APDU + 5, CDOL, CDOLLen);
 679         int apdulen = 5 + CDOLLen;
 680
 681         return EMVExchange(channel, LeaveFieldON, CDOL_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
 682 }
 683
 684 int EMVGenerateChallenge(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
 685 {
 686         uint8_t get_challenge_APDU[APDU_COMMAND_LEN] = {0x00, ISO7816_GET_CHALLENGE, 0x00, 0x00};
 687
 688         int res = EMVExchange(channel, LeaveFieldON, get_challenge_APDU, 4, Result, MaxResultLen, ResultLen, sw, tlv);
 689         if (*sw == 0x6700) {
 690                 PrintAndLogEx(INFO, ">>> trying to reissue command withouth Le...");
 691                 res = EMVExchangeEx(channel, false, LeaveFieldON, get_challenge_APDU, 4, Result, MaxResultLen, ResultLen, sw, tlv);
 692         }
 693         return res;
 694 }
 695
 696 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)
 697 {
 698         uint8_t authenticate_APDU[APDU_COMMAND_LEN] = {0x00, ISO7816_INTERNAL_AUTHENTICATE, 0x00, 0x00, DDOLLen, 0x00};
 699         memcpy(authenticate_APDU + 5, DDOL, DDOLLen);
 700         int apdulen = 5 + DDOLLen;
 701
 702         return EMVExchange(channel, LeaveFieldON, authenticate_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
 703 }
 704
 705 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)
 706 {
 707         uint8_t checksum_APDU[APDU_COMMAND_LEN] = {0x80, 0x2a, 0x8e, 0x80, UDOLlen, 0x00};
 708         memcpy(checksum_APDU + 5, UDOL, UDOLlen);
 709         int apdulen = 5 + UDOLlen;
 710
 711         return EMVExchange(channel, LeaveFieldON, checksum_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
 712 }
 713
 714 // Authentication
 715 struct emv_pk *get_ca_pk(struct tlvdb *db) {
 716         const struct tlv *df_tlv = tlvdb_get(db, 0x84, NULL);
 717         const struct tlv *caidx_tlv = tlvdb_get(db, 0x8f, NULL);
 718
 719         if (!df_tlv || !caidx_tlv || df_tlv->len < 6 || caidx_tlv->len != 1)
 720                 return NULL;
 721
 722         PrintAndLogEx(NORMAL, "CA Public Key index 0x%0x", caidx_tlv->value[0]);
 723         return emv_pk_get_ca_pk(df_tlv->value, caidx_tlv->value[0]);
 724 }
 725
 726 int trSDA(struct tlvdb *tlv) {
 727
 728         struct emv_pk *pk = get_ca_pk(tlv);
 729         if (!pk) {
 730                 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
 731                 return 2;
 732         }
 733
 734         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
 735         if (!issuer_pk) {
 736                 emv_pk_free(pk);
 737                 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
 738                 return 2;
 739         }
 740
 741         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx",
 742                 issuer_pk->rid[0],
 743                 issuer_pk->rid[1],
 744                 issuer_pk->rid[2],
 745                 issuer_pk->rid[3],
 746                 issuer_pk->rid[4],
 747                 issuer_pk->index,
 748                 issuer_pk->serial[0],
 749                 issuer_pk->serial[1],
 750                 issuer_pk->serial[2]
 751                 );
 752
 753         const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
 754         if (!sda_tlv || sda_tlv->len < 1) {
 755                 emv_pk_free(issuer_pk);
 756                 emv_pk_free(pk);
 757                 PrintAndLogEx(WARNING, "Can't find input list for Offline Data Authentication. Exit.");
 758                 return 3;
 759         }
 760
 761         struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
 762         if (dac_db) {
 763                 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
 764                 PrintAndLogEx(NORMAL, "SDA verified OK. (Data Authentication Code: %02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]);
 765                 tlvdb_add(tlv, dac_db);
 766         } else {
 767                 emv_pk_free(issuer_pk);
 768                 emv_pk_free(pk);
 769                 PrintAndLogEx(WARNING, "SSAD verify error");
 770                 return 4;
 771         }
 772
 773         emv_pk_free(issuer_pk);
 774         emv_pk_free(pk);
 775         return 0;
 776 }
 777
 778 static const unsigned char default_ddol_value[] = {0x9f, 0x37, 0x04};
 779 static struct tlv default_ddol_tlv = {.tag = 0x9f49, .len = 3, .value = default_ddol_value };
 780
 781 int trDDA(EMVCommandChannel channel, bool decodeTLV, struct tlvdb *tlv) {
 782         uint8_t buf[APDU_RESPONSE_LEN] = {0};
 783         size_t len = 0;
 784         uint16_t sw = 0;
 785
 786         struct emv_pk *pk = get_ca_pk(tlv);
 787         if (!pk) {
 788                 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
 789                 return 2;
 790         }
 791
 792         const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
 793 /*      if (!sda_tlv || sda_tlv->len < 1) { it may be 0!!!!
 794                 emv_pk_free(pk);
 795                 PrintAndLogEx(WARNING, "Error: Can't find input list for Offline Data Authentication. Exit.");
 796                 return 3;
 797         }
 798 */
 799         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
 800         if (!issuer_pk) {
 801                 emv_pk_free(pk);
 802                 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
 803                 return 2;
 804         }
 805         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 806                         issuer_pk->rid[0],
 807                         issuer_pk->rid[1],
 808                         issuer_pk->rid[2],
 809                         issuer_pk->rid[3],
 810                         issuer_pk->rid[4],
 811                         issuer_pk->index,
 812                         issuer_pk->serial[0],
 813                         issuer_pk->serial[1],
 814                         issuer_pk->serial[2]
 815                         );
 816
 817         struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
 818         if (!icc_pk) {
 819                 emv_pk_free(pk);
 820                 emv_pk_free(issuer_pk);
 821                 PrintAndLogEx(WARNING, "Error: ICC certificate not found. Exit.");
 822                 return 2;
 823         }
 824         PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 825                         icc_pk->rid[0],
 826                         icc_pk->rid[1],
 827                         icc_pk->rid[2],
 828                         icc_pk->rid[3],
 829                         icc_pk->rid[4],
 830                         icc_pk->index,
 831                         icc_pk->serial[0],
 832                         icc_pk->serial[1],
 833                         icc_pk->serial[2]
 834                         );
 835
 836         if (tlvdb_get(tlv, 0x9f2d, NULL)) {
 837                 struct emv_pk *icc_pe_pk = emv_pki_recover_icc_pe_cert(issuer_pk, tlv);
 838                 if (!icc_pe_pk) {
 839                         PrintAndLogEx(WARNING, "WARNING: ICC PE PK recover error. ");
 840                 } else {
 841                         PrintAndLogEx(SUCCESS, "ICC PE PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 842                                         icc_pe_pk->rid[0],
 843                                         icc_pe_pk->rid[1],
 844                                         icc_pe_pk->rid[2],
 845                                         icc_pe_pk->rid[3],
 846                                         icc_pe_pk->rid[4],
 847                                         icc_pe_pk->index,
 848                                         icc_pe_pk->serial[0],
 849                                         icc_pe_pk->serial[1],
 850                                         icc_pe_pk->serial[2]
 851                                         );
 852                 }
 853         } else {
 854                 PrintAndLogEx(INFO, "ICC PE PK (PIN Encipherment Public Key Certificate) not found.\n");
 855         }
 856
 857         // 9F4B: Signed Dynamic Application Data
 858         const struct tlv *sdad_tlv = tlvdb_get(tlv, 0x9f4b, NULL);
 859         // DDA with internal authenticate OR fDDA with filled 0x9F4B tag (GPO result)
 860         // EMV kernel3 v2.4, contactless book C-3, C.1., page 147
 861         if (sdad_tlv) {
 862                 PrintAndLogEx(NORMAL, "\n* * Got Signed Dynamic Application Data (9F4B) form GPO. Maybe fDDA...");
 863
 864                 const struct tlvdb *atc_db = emv_pki_recover_atc_ex(icc_pk, tlv, true);
 865                 if (!atc_db) {
 866                         PrintAndLogEx(WARNING, "Error: Can't recover IDN (ICC Dynamic Number)");
 867                         emv_pk_free(pk);
 868                         emv_pk_free(issuer_pk);
 869                         emv_pk_free(icc_pk);
 870                         return 8;
 871                 }
 872
 873                 // 9f36 Application Transaction Counter (ATC)
 874                 const struct tlv *atc_tlv = tlvdb_get(atc_db, 0x9f36, NULL);
 875                 if(atc_tlv) {
 876                         PrintAndLogEx(NORMAL, "\nATC (Application Transaction Counter) [%zu] %s", atc_tlv->len, sprint_hex_inrow(atc_tlv->value, atc_tlv->len));
 877
 878                         const struct tlv *core_atc_tlv = tlvdb_get(tlv, 0x9f36, NULL);
 879                         if(tlv_equal(core_atc_tlv, atc_tlv)) {
 880                                 PrintAndLogEx(SUCCESS, "ATC check OK.");
 881                                 PrintAndLogEx(SUCCESS, "fDDA (fast DDA) verified OK.");
 882                         } else {
 883                                 PrintAndLogEx(WARNING, "Error: fDDA verified, but ATC in the certificate and ATC in the record not the same.");
 884                         }
 885                 } else {
 886                         PrintAndLogEx(NORMAL, "\nERROR: fDDA (fast DDA) verify error");
 887                         emv_pk_free(pk);
 888                         emv_pk_free(issuer_pk);
 889                         emv_pk_free(icc_pk);
 890                         return 9;
 891                 }
 892         } else {
 893                 struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
 894                 if (dac_db) {
 895                         const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
 896                         PrintAndLogEx(NORMAL, "SDAD verified OK. (Data Authentication Code: %02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]);
 897                         tlvdb_add(tlv, dac_db);
 898                 } else {
 899                         PrintAndLogEx(WARNING, "Error: SSAD verify error");
 900                         emv_pk_free(pk);
 901                         emv_pk_free(issuer_pk);
 902                         emv_pk_free(icc_pk);
 903                         return 4;
 904                 }
 905
 906                 PrintAndLogEx(NORMAL, "\n* Calc DDOL");
 907                 const struct tlv *ddol_tlv = tlvdb_get(tlv, 0x9f49, NULL);
 908                 if (!ddol_tlv) {
 909                         ddol_tlv = &default_ddol_tlv;
 910                         PrintAndLogEx(NORMAL, "DDOL [9f49] not found. Using default DDOL");
 911                 }
 912
 913                 struct tlv *ddol_data_tlv = dol_process(ddol_tlv, tlv, 0);
 914                 if (!ddol_data_tlv) {
 915                         PrintAndLogEx(WARNING, "Error: Can't create DDOL TLV");
 916                         emv_pk_free(pk);
 917                         emv_pk_free(issuer_pk);
 918                         emv_pk_free(icc_pk);
 919                         return 5;
 920                 }
 921
 922                 PrintAndLogEx(NORMAL, "DDOL data[%d]: %s", ddol_data_tlv->len, sprint_hex(ddol_data_tlv->value, ddol_data_tlv->len));
 923
 924                 PrintAndLogEx(NORMAL, "\n* Internal Authenticate");
 925                 int res = EMVInternalAuthenticate(channel, true, (uint8_t *)ddol_data_tlv->value, ddol_data_tlv->len, buf, sizeof(buf), &len, &sw, NULL);
 926                 if (res) {
 927                         PrintAndLogEx(WARNING, "Internal Authenticate error(%d): %4x. Exit...", res, sw);
 928                         free(ddol_data_tlv);
 929                         emv_pk_free(pk);
 930                         emv_pk_free(issuer_pk);
 931                         emv_pk_free(icc_pk);
 932                         return 6;
 933                 }
 934
 935                 struct tlvdb *dda_db = NULL;
 936                 if (buf[0] == 0x80) {
 937                         if (len < 3 ) {
 938                                 PrintAndLogEx(WARNING, "Error: Internal Authenticate format1 parsing error. length=%d", len);
 939                         } else {
 940                                 // parse response 0x80
 941                                 struct tlvdb *t80 = tlvdb_parse_multi(buf, len);
 942                                 const struct tlv * t80tlv = tlvdb_get_tlv(t80);
 943
 944                                 // 9f4b Signed Dynamic Application Data
 945                                 dda_db = tlvdb_fixed(0x9f4b, t80tlv->len, t80tlv->value);
 946                                 tlvdb_add(tlv, dda_db);
 947
 948                                 tlvdb_free(t80);
 949
 950                                 if (decodeTLV){
 951                                         PrintAndLogEx(NORMAL, "* * Decode response format 1:");
 952                                         TLVPrintFromTLV(dda_db);
 953                                 }
 954                         }
 955                 } else {
 956                         dda_db = tlvdb_parse_multi(buf, len);
 957                         if(!dda_db) {
 958                                 PrintAndLogEx(WARNING, "Error: Can't parse Internal Authenticate result as TLV");
 959                                 free(ddol_data_tlv);
 960                                 emv_pk_free(pk);
 961                                 emv_pk_free(issuer_pk);
 962                                 emv_pk_free(icc_pk);
 963                                 return 7;
 964                         }
 965                         tlvdb_add(tlv, dda_db);
 966
 967                         if (decodeTLV)
 968                                 TLVPrintFromTLV(dda_db);
 969                 }
 970
 971                 struct tlvdb *idn_db = emv_pki_recover_idn_ex(icc_pk, dda_db, ddol_data_tlv, true);
 972                 free(ddol_data_tlv);
 973                 if (!idn_db) {
 974                         PrintAndLogEx(WARNING, "Error: Can't recover IDN (ICC Dynamic Number)");
 975                         tlvdb_free(dda_db);
 976                         emv_pk_free(pk);
 977                         emv_pk_free(issuer_pk);
 978                         emv_pk_free(icc_pk);
 979                         return 8;
 980                 }
 981                 tlvdb_free(dda_db);
 982
 983                 // 9f4c ICC Dynamic Number
 984                 const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL);
 985                 if(idn_tlv) {
 986                         PrintAndLogEx(NORMAL, "\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len));
 987                         PrintAndLogEx(NORMAL, "DDA verified OK.");
 988                         tlvdb_add(tlv, idn_db);
 989                         tlvdb_free(idn_db);
 990                 } else {
 991                         PrintAndLogEx(NORMAL, "\nERROR: DDA verify error");
 992                         tlvdb_free(idn_db);
 993
 994                         emv_pk_free(pk);
 995                         emv_pk_free(issuer_pk);
 996                         emv_pk_free(icc_pk);
 997                         return 9;
 998                 }
 999         }
1000
1001         emv_pk_free(pk);
1002         emv_pk_free(issuer_pk);
1003         emv_pk_free(icc_pk);
1004         return 0;
1005 }
1006
1007 int trCDA(struct tlvdb *tlv, struct tlvdb *ac_tlv, struct tlv *pdol_data_tlv, struct tlv *ac_data_tlv) {
1008
1009         struct emv_pk *pk = get_ca_pk(tlv);
1010         if (!pk) {
1011                 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
1012                 return 2;
1013         }
1014
1015         const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
1016         if (!sda_tlv || sda_tlv->len < 1) {
1017                 PrintAndLogEx(WARNING, "Error: Can't find input list for Offline Data Authentication. Exit.");
1018                 emv_pk_free(pk);
1019                 return 3;
1020         }
1021
1022         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
1023         if (!issuer_pk) {
1024                 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
1025                 emv_pk_free(pk);
1026                 return 2;
1027         }
1028         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
1029                         issuer_pk->rid[0],
1030                         issuer_pk->rid[1],
1031                         issuer_pk->rid[2],
1032                         issuer_pk->rid[3],
1033                         issuer_pk->rid[4],
1034                         issuer_pk->index,
1035                         issuer_pk->serial[0],
1036                         issuer_pk->serial[1],
1037                         issuer_pk->serial[2]
1038                         );
1039
1040         struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
1041         if (!icc_pk) {
1042                 PrintAndLogEx(WARNING, "Error: ICC certificate not found. Exit.");
1043                 emv_pk_free(pk);
1044                 emv_pk_free(issuer_pk);
1045                 return 2;
1046         }
1047         PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
1048                         icc_pk->rid[0],
1049                         icc_pk->rid[1],
1050                         icc_pk->rid[2],
1051                         icc_pk->rid[3],
1052                         icc_pk->rid[4],
1053                         icc_pk->index,
1054                         icc_pk->serial[0],
1055                         icc_pk->serial[1],
1056                         icc_pk->serial[2]
1057                         );
1058
1059         struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
1060         if (dac_db) {
1061                 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
1062                 PrintAndLogEx(NORMAL, "SSAD verified OK. (%02hhx:%02hhx)", dac_tlv->value[0], dac_tlv->value[1]);
1063                 tlvdb_add(tlv, dac_db);
1064         } else {
1065                 PrintAndLogEx(WARNING, "Error: SSAD verify error");
1066                 emv_pk_free(pk);
1067                 emv_pk_free(issuer_pk);
1068                 emv_pk_free(icc_pk);
1069                 return 4;
1070         }
1071
1072         PrintAndLogEx(NORMAL, "\n* * Check Signed Dynamic Application Data (SDAD)");
1073         struct tlvdb *idn_db = emv_pki_perform_cda_ex(icc_pk, tlv, ac_tlv,
1074                         pdol_data_tlv, // pdol
1075                         ac_data_tlv,   // cdol1
1076                         NULL,          // cdol2
1077                         true);
1078         if (idn_db) {
1079                 const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL);
1080                 PrintAndLogEx(NORMAL, "\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len));
1081                 PrintAndLogEx(NORMAL, "CDA verified OK.");
1082                 tlvdb_add(tlv, idn_db);
1083         } else {
1084                 PrintAndLogEx(NORMAL, "\nERROR: CDA verify error");
1085         }
1086
1087         emv_pk_free(pk);
1088         emv_pk_free(issuer_pk);
1089         emv_pk_free(icc_pk);
1090         return 0;
1091 }
1092
1093 int RecoveryCertificates(struct tlvdb *tlvRoot, json_t *root) {
1094
1095         struct emv_pk *pk = get_ca_pk(tlvRoot);
1096         if (!pk) {
1097                 PrintAndLog("ERROR: Key not found. Exit.");
1098                 return 1;
1099         }
1100
1101         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlvRoot);
1102         if (!issuer_pk) {
1103                 emv_pk_free(pk);
1104                 PrintAndLog("WARNING: Issuer certificate not found. Exit.");
1105                 return 2;
1106         }
1107         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx",
1108                         issuer_pk->rid[0],
1109                         issuer_pk->rid[1],
1110                         issuer_pk->rid[2],
1111                         issuer_pk->rid[3],
1112                         issuer_pk->rid[4],
1113                         issuer_pk->index,
1114                         issuer_pk->serial[0],
1115                         issuer_pk->serial[1],
1116                         issuer_pk->serial[2]
1117                         );
1118
1119         JsonSaveBufAsHex(root, "$.ApplicationData.RID", issuer_pk->rid, 5);
1120
1121         char *issuer_pk_c = emv_pk_dump_pk(issuer_pk);
1122         JsonSaveStr(root, "$.ApplicationData.IssuerPublicKeyDec", issuer_pk_c);
1123         JsonSaveBufAsHex(root, "$.ApplicationData.IssuerPublicKeyModulus", issuer_pk->modulus, issuer_pk->mlen);
1124         free(issuer_pk_c);
1125
1126         struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlvRoot, NULL);
1127         if (!icc_pk) {
1128                 emv_pk_free(pk);
1129                 emv_pk_free(issuer_pk);
1130                 PrintAndLogEx(WARNING, "WARNING: ICC certificate not found. Exit.");
1131                 return 2;
1132         }
1133         PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
1134                         icc_pk->rid[0],
1135                         icc_pk->rid[1],
1136                         icc_pk->rid[2],
1137                         icc_pk->rid[3],
1138                         icc_pk->rid[4],
1139                         icc_pk->index,
1140                         icc_pk->serial[0],
1141                         icc_pk->serial[1],
1142                         icc_pk->serial[2]
1143                         );
1144
1145         char *icc_pk_c = emv_pk_dump_pk(icc_pk);
1146         JsonSaveStr(root, "$.ApplicationData.ICCPublicKeyDec", icc_pk_c);
1147         JsonSaveBufAsHex(root, "$.ApplicationData.ICCPublicKeyModulus", icc_pk->modulus, icc_pk->mlen);
1148         free(issuer_pk_c);
1149
1150         return 0;
1151 }