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

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2017 Merlok
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // EMV core functions
   9 //-----------------------------------------------------------------------------
  10
  11 #include "emvcore.h"
  12 #include "emvjson.h"
  13 #include "util_posix.h"
  14 #include "protocols.h"
  15 #ifdef WITH_SMARTCARD
  16 #include "cmdsmartcard.h"
  17 #endif
  18
  19 // Got from here. Thanks)
  20 // https://eftlab.co.uk/index.php/site-map/knowledge-base/211-emv-aid-rid-pix
  21 static const char *PSElist [] = {
  22         "325041592E5359532E4444463031", // 2PAY.SYS.DDF01 - Visa Proximity Payment System Environment - PPSE
  23         "315041592E5359532E4444463031"  // 1PAY.SYS.DDF01 - Visa Payment System Environment - PSE
  24 };
  25 //static const size_t PSElistLen = sizeof(PSElist)/sizeof(char*);
  26
  27 char *TransactionTypeStr[] = {
  28         "MSD",
  29         "VSDC",
  30         "qVCDCMCHIP",
  31         "CDA"
  32 };
  33
  34 typedef struct {
  35         enum CardPSVendor vendor;
  36         const char* aid;
  37 } TAIDList;
  38
  39 static const TAIDList AIDlist [] = {
  40         // Visa International
  41         { CV_VISA,  "A00000000305076010"},          // VISA ELO Credit
  42         { CV_VISA,  "A0000000031010" },             // VISA Debit/Credit (Classic)
  43         { CV_VISA,  "A000000003101001" },           // VISA Credit
  44         { CV_VISA,  "A000000003101002" },           // VISA Debit
  45         { CV_VISA,  "A0000000032010" },             // VISA Electron
  46         { CV_VISA,  "A0000000032020" },             // VISA
  47         { CV_VISA,  "A0000000033010" },             // VISA Interlink
  48         { CV_VISA,  "A0000000034010" },             // VISA Specific
  49         { CV_VISA,  "A0000000035010" },             // VISA Specific
  50         { CV_VISA,  "A0000000036010" },             // Domestic Visa Cash Stored Value
  51         { CV_VISA,  "A0000000036020" },             // International Visa Cash Stored Value
  52         { CV_VISA,  "A0000000038002" },             // VISA Auth, VisaRemAuthen EMV-CAP (DPA)
  53         { CV_VISA,  "A0000000038010" },             // VISA Plus
  54         { CV_VISA,  "A0000000039010" },             // VISA Loyalty
  55         { CV_VISA,  "A000000003999910" },           // VISA Proprietary ATM
  56         // Visa USA
  57         { CV_VISA,  "A000000098" },                 // Debit Card
  58         { CV_VISA,  "A0000000980848" },             // Debit Card
  59         // Mastercard International
  60         { CV_MASTERCARD, "A00000000401" },          // MasterCard PayPass
  61         { CV_MASTERCARD, "A0000000041010" },        // MasterCard Credit
  62         { CV_MASTERCARD, "A00000000410101213" },    // MasterCard Credit
  63         { CV_MASTERCARD, "A00000000410101215" },    // MasterCard Credit
  64         { CV_MASTERCARD, "A0000000042010" },        // MasterCard Specific
  65         { CV_MASTERCARD, "A0000000043010" },        // MasterCard Specific
  66         { CV_MASTERCARD, "A0000000043060" },        // Maestro (Debit)
  67         { CV_MASTERCARD, "A000000004306001" },      // Maestro (Debit)
  68         { CV_MASTERCARD, "A0000000044010" },        // MasterCard Specific
  69         { CV_MASTERCARD, "A0000000045010" },        // MasterCard Specific
  70         { CV_MASTERCARD, "A0000000046000" },        // Cirrus
  71         { CV_MASTERCARD, "A0000000048002" },        // SecureCode Auth EMV-CAP
  72         { CV_MASTERCARD, "A0000000049999" },        // MasterCard PayPass
  73         { CV_MASTERCARD, "B012345678" },            // Maestro TEST Used for development
  74         // American Express
  75         { CV_AMERICANEXPRESS, "A000000025" },
  76         { CV_AMERICANEXPRESS, "A0000000250000" },
  77         { CV_AMERICANEXPRESS, "A00000002501" },
  78         { CV_AMERICANEXPRESS, "A000000025010402" },
  79         { CV_AMERICANEXPRESS, "A000000025010701" },
  80         { CV_AMERICANEXPRESS, "A000000025010801" },
  81         // Groupement des Cartes Bancaires "CB"
  82         { CV_CB, "A0000000421010" },                // Cartes Bancaire EMV Card
  83         { CV_CB, "A0000000422010" },
  84         { CV_CB, "A0000000423010" },
  85         { CV_CB, "A0000000424010" },
  86         { CV_CB, "A0000000425010" },
  87         // JCB CO., LTD.
  88         { CV_JCB, "A00000006510" },                 // JCB
  89         { CV_JCB, "A0000000651010" },               // JCB J Smart Credit
  90         // Switch Card Services Ltd.
  91         { CV_SWITCH, "A0000000050001" },            // Maestro UK
  92         { CV_SWITCH, "A0000000050002" },            // Solo
  93         // Diners Club International Ltd.
  94         { CV_DINERS, "A0000001523010" },            // Discover, Pulse D Pas Discover Card
  95         { CV_DINERS, "A0000001524010" },            // Discover, Discover Debit Common Card
  96         // Other
  97         { CV_OTHER, "A00000002401" },               // Midland Bank Plc - Self Service
  98         { CV_OTHER, "A0000000291010" },             // LINK Interchange Network Ltd - Link / American Express
  99         { CV_OTHER, "A00000006900" },               // Société Européenne de Monnaie Electronique SEME - Moneo
 100         { CV_OTHER, "A000000077010000021000000000003B" },  // Oberthur Technologies France - Visa AEPN
 101         { CV_OTHER, "A0000001211010" },             // PBS Danmark A/S - Denmark - Dankort (VISA GEM Vision) - Danish domestic debit card
 102         { CV_OTHER, "A0000001410001" },             // Associazione Bancaria Italiana - Italy - PagoBANCOMAT - CoGeBan Consorzio BANCOMAT (Italian domestic debit card)
 103         { CV_OTHER, "A0000001544442" },             // Banricompras Debito - Banrisul - Banco do Estado do Rio Grande do SUL - S.A.
 104         { CV_OTHER, "A000000172950001" },           // Financial Information Service Co. Ltd. - Taiwan - BAROC Financial Application Taiwan- The Bankers Association of the Republic of China
 105         { CV_OTHER, "A0000001850002" },             // Post Office Limited - United Kingdom - UK Post Office Account card
 106         { 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)
 107         { 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)
 108         { CV_OTHER, "A0000002771010" },             // Interac Association - Canada - INTERAC - Canadian domestic credit/debit card
 109         { CV_OTHER, "A00000031510100528" },         // Currence Holding/PIN BV - The Netherlands- Currence PuC
 110         { CV_OTHER, "A0000003156020" },             // Currence Holding/PIN BV - The Netherlands - Chipknip
 111         { CV_OTHER, "A0000003591010028001" },       // Euro Alliance of Payment Schemes s.c.r.l. (EAPS) - Belgium - Girocard EAPS - ZKA (Germany)
 112         { CV_OTHER, "A0000003710001" },             // Verve - Nigeria - InterSwitch Verve Card - Nigerian local switch company
 113         { CV_OTHER, "A0000004540010" },             // eTranzact - Nigeria - Etranzact Genesis Card - Nigerian local switch company
 114         { CV_OTHER, "A0000004540011" },             // eTranzact - Nigeria - Etranzact Genesis Card 2 - Nigerian local switch company
 115         { CV_OTHER, "A0000004766C" },               // Google - United States - GOOGLE_PAYMENT_AID
 116         { CV_OTHER, "A0000005241010" },             // RuPay - India - RuPay - RuPay (India)
 117         { CV_OTHER, "A0000006723010" },             // TROY - Turkey - TROY chip credit card - Turkey's Payment Method
 118         { CV_OTHER, "A0000006723020" },             // TROY - Turkey - TROY chip debit card - Turkey's Payment Method
 119         { CV_OTHER, "A0000007705850" },             // Indian Oil Corporation Limited - India - XTRAPOWER Fleet Card Program - Indian Oil’s Pre Paid Program
 120         { CV_OTHER, "D27600002545500100" },         // ZKA - Germany - Girocard - ZKA Girocard (Geldkarte) (Germany)
 121         { CV_OTHER, "D5280050218002" },             // The Netherlands - ? - (Netherlands)
 122         { CV_OTHER, "D5780000021010" },             // Bankaxept    Norway  Bankaxept   Norwegian domestic debit card
 123         { CV_OTHER, "F0000000030001" },             // BRADESCO - Brazilian Bank Banco Bradesco
 124 };
 125 static const size_t AIDlistLen = sizeof(AIDlist)/sizeof(TAIDList);
 126
 127 static bool APDULogging = false;
 128 void SetAPDULogging(bool logging) {
 129         APDULogging = logging;
 130 }
 131
 132 enum CardPSVendor GetCardPSVendor(uint8_t * AID, size_t AIDlen) {
 133         char buf[100] = {0};
 134         if (AIDlen < 1)
 135                 return CV_NA;
 136
 137         hex_to_buffer((uint8_t *)buf, AID, AIDlen, sizeof(buf) - 1, 0, 0, true);
 138
 139         for(int i = 0; i < AIDlistLen; i ++) {
 140                 if (strncmp(AIDlist[i].aid, buf, strlen(AIDlist[i].aid)) == 0){
 141                         return AIDlist[i].vendor;
 142                 }
 143         }
 144
 145         return CV_NA;
 146 }
 147
 148 static bool print_cb(void *data, const struct tlv *tlv, int level, bool is_leaf) {
 149         emv_tag_dump(tlv, stdout, level);
 150         if (is_leaf) {
 151                 dump_buffer(tlv->value, tlv->len, stdout, level);
 152         }
 153
 154         return true;
 155 }
 156
 157 bool TLVPrintFromBuffer(uint8_t *data, int datalen) {
 158         struct tlvdb *t = NULL;
 159         t = tlvdb_parse_multi(data, datalen);
 160         if (t) {
 161                 PrintAndLogEx(NORMAL, "-------------------- TLV decoded --------------------");
 162
 163                 tlvdb_visit(t, print_cb, NULL, 0);
 164                 tlvdb_free(t);
 165                 return true;
 166         } else {
 167                 PrintAndLogEx(WARNING, "TLV ERROR: Can't parse response as TLV tree.");
 168         }
 169         return false;
 170 }
 171
 172 void TLVPrintFromTLVLev(struct tlvdb *tlv, int level) {
 173         if (!tlv)
 174                 return;
 175
 176         tlvdb_visit(tlv, print_cb, NULL, level);
 177 }
 178
 179 void TLVPrintFromTLV(struct tlvdb *tlv) {
 180         TLVPrintFromTLVLev(tlv, 0);
 181 }
 182
 183 void TLVPrintAIDlistFromSelectTLV(struct tlvdb *tlv) {
 184         PrintAndLogEx(NORMAL, "|------------------|--------|-------------------------|");
 185         PrintAndLogEx(NORMAL, "|    AID           |Priority| Name                    |");
 186         PrintAndLogEx(NORMAL, "|------------------|--------|-------------------------|");
 187
 188         struct tlvdb *ttmp = tlvdb_find(tlv, 0x6f);
 189         if (!ttmp)
 190                 PrintAndLogEx(NORMAL, "|                         none                        |");
 191
 192         while (ttmp) {
 193                 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x84, NULL);
 194                 const struct tlv *tgName = tlvdb_get_inchild(ttmp, 0x50, NULL);
 195                 const struct tlv *tgPrio = tlvdb_get_inchild(ttmp, 0x87, NULL);
 196                 if (!tgAID)
 197                         break;
 198                 PrintAndLogEx(NORMAL, "|%s|   %s  |%s|",
 199                         sprint_hex_inrow_ex(tgAID->value, tgAID->len, 18),
 200                         (tgPrio) ? sprint_hex(tgPrio->value, 1) : "   ",
 201                         (tgName) ? sprint_ascii_ex(tgName->value, tgName->len, 25) : "                         ");
 202
 203                 ttmp = tlvdb_find_next(ttmp, 0x6f);
 204         }
 205
 206         PrintAndLogEx(NORMAL, "|------------------|--------|-------------------------|");
 207 }
 208
 209 struct tlvdb *GetPANFromTrack2(const struct tlv *track2) {
 210         char track2Hex[200] = {0};
 211         uint8_t PAN[100] = {0};
 212         int PANlen = 0;
 213         char *tmp = track2Hex;
 214
 215         if (!track2)
 216                 return NULL;
 217
 218         for (int i = 0; i < track2->len; ++i, tmp += 2)
 219                 sprintf(tmp, "%02x", (unsigned int)track2->value[i]);
 220
 221         int posD = strchr(track2Hex, 'd') - track2Hex;
 222         if (posD < 1)
 223                 return NULL;
 224
 225         track2Hex[posD] = 0;
 226         if (strlen(track2Hex) % 2) {
 227                 track2Hex[posD] = 'F';
 228                 track2Hex[posD + 1] = '\0';
 229         }
 230
 231         param_gethex_to_eol(track2Hex, 0, PAN, sizeof(PAN), &PANlen);
 232
 233   return tlvdb_fixed(0x5a, PANlen, PAN);
 234 }
 235
 236 struct tlvdb *GetdCVVRawFromTrack2(const struct tlv *track2) {
 237         char track2Hex[200] = {0};
 238         char dCVVHex[100] = {0};
 239         uint8_t dCVV[100] = {0};
 240         int dCVVlen = 0;
 241         const int PINlen = 5; // must calculated from 9F67 MSD Offset but i have not seen this tag)
 242         char *tmp = track2Hex;
 243
 244         if (!track2)
 245                 return NULL;
 246
 247         for (int i = 0; i < track2->len; ++i, tmp += 2)
 248                 sprintf(tmp, "%02x", (unsigned int)track2->value[i]);
 249
 250         int posD = strchr(track2Hex, 'd') - track2Hex;
 251         if (posD < 1)
 252                 return NULL;
 253
 254         memset(dCVVHex, '0', 32);
 255         // ATC
 256         memcpy(dCVVHex + 0, track2Hex + posD + PINlen + 11, 4);
 257         // PAN 5 hex
 258         memcpy(dCVVHex + 4, track2Hex, 5);
 259         // expire date
 260         memcpy(dCVVHex + 9, track2Hex + posD + 1, 4);
 261         // service code
 262         memcpy(dCVVHex + 13, track2Hex + posD + 5, 3);
 263
 264         param_gethex_to_eol(dCVVHex, 0, dCVV, sizeof(dCVV), &dCVVlen);
 265
 266   return tlvdb_fixed(0x02, dCVVlen, dCVV);
 267 }
 268
 269
 270 static 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)
 271 {
 272         *ResultLen = 0;
 273         if (sw) *sw = 0;
 274         uint16_t isw = 0;
 275         int res = 0;
 276
 277         if (ActivateField && channel == ECC_CONTACTLESS) {
 278                 DropField();
 279                 msleep(50);
 280         }
 281
 282         if (APDULogging)
 283                 PrintAndLogEx(SUCCESS, ">>>> %s", sprint_hex(apdu, apdu_len));
 284
 285         switch(channel) {
 286                 case ECC_CONTACTLESS:
 287                         // 6 byes + data = INS + CLA + P1 + P2 + Lc + <data = Nc> + Le(?IncludeLe)
 288                         res = ExchangeAPDU14a(apdu, apdu_len, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
 289                         if (res) {
 290                                 return res;
 291                         }
 292                         break;
 293                 case ECC_CONTACT:
 294                         //int ExchangeAPDUSC(uint8_t *datain, int datainlen, bool activateCard, bool leaveSignalON, uint8_t *dataout, int maxdataoutlen, int *dataoutlen);
 295 #ifdef WITH_SMARTCARD
 296                         res = ExchangeAPDUSC(apdu, apdu_len, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
 297                         if (res) {
 298                                 return res;
 299                         }
 300 #endif
 301                         break;
 302         }
 303
 304         if (APDULogging)
 305                 PrintAndLogEx(SUCCESS, "<<<< %s", sprint_hex(Result, *ResultLen));
 306
 307         if (*ResultLen < 2) {
 308                 return 200;
 309         }
 310
 311         if (Result[*ResultLen-2] == 0x61) {
 312                 uint8_t La = Result[*ResultLen-1];
 313                 uint8_t get_response[5] = {apdu[0], ISO7816_GET_RESPONSE, 0x00, 0x00, La};
 314                 return EMVExchangeEx(channel, false, LeaveFieldON, get_response, sizeof(get_response), Result, MaxResultLen, ResultLen, sw, tlv);
 315         }
 316
 317         *ResultLen -= 2;
 318         isw = Result[*ResultLen] * 0x0100 + Result[*ResultLen + 1];
 319         if (sw)
 320                 *sw = isw;
 321
 322         if (isw != 0x9000) {
 323                 if (APDULogging) {
 324                         PrintAndLogEx(ERR, "APDU(%02x%02x) ERROR: [%4X] %s", apdu[0], apdu[1], isw, GetAPDUCodeDescription(*sw >> 8, *sw & 0xff));
 325                         return 5;
 326                 }
 327         }
 328
 329         // add to tlv tree
 330         if (tlv) {
 331                 struct tlvdb *t = tlvdb_parse_multi(Result, *ResultLen);
 332                 tlvdb_add(tlv, t);
 333         }
 334
 335         return 0;
 336 }
 337
 338 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)
 339 {
 340         uint8_t APDU[APDU_COMMAND_LEN];
 341         memcpy(APDU, apdu, apdu_len);
 342         APDU[apdu_len] = 0x00;
 343         if (channel == ECC_CONTACTLESS) {
 344                 if (apdu_len == 5 && apdu[4] == 0) {
 345                         // there is no Lc but an Le == 0 already
 346                 } else if (apdu_len > 5 && apdu_len == 5 + apdu[4] + 1) {
 347                         // there is Lc, data and Le
 348                 } else {
 349                         apdu_len++; // no Le, add Le = 0x00 because some vendors require it for contactless
 350                 }
 351         }
 352         return EMVExchangeEx(channel, false, LeaveFieldON, APDU, apdu_len, Result, MaxResultLen, ResultLen, sw, tlv);
 353 }
 354
 355 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)
 356 {
 357         uint8_t Select_APDU[APDU_COMMAND_LEN] = {0x00, ISO7816_SELECT_FILE, 0x04, 0x00, AIDLen, 0x00};
 358         memcpy(Select_APDU + 5, AID, AIDLen);
 359         int apdulen = 5 + AIDLen;
 360         if (channel == ECC_CONTACTLESS) {
 361                 apdulen++;  // some vendors require Le = 0x00 for contactless operations
 362         }
 363         return EMVExchangeEx(channel, ActivateField, LeaveFieldON, Select_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
 364 }
 365
 366 int EMVSelectPSE(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t PSENum, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw) {
 367         uint8_t buf[APDU_DATA_LEN] = {0};
 368         *ResultLen = 0;
 369         int len = 0;
 370         int res = 0;
 371         switch (PSENum) {
 372                 case 1:
 373                         param_gethex_to_eol(PSElist[1], 0, buf, sizeof(buf), &len);
 374                         break;
 375                 case 2:
 376
 377                         param_gethex_to_eol(PSElist[0], 0, buf, sizeof(buf), &len);
 378                         break;
 379                 default:
 380                         return -1;
 381         }
 382
 383         // select
 384         res = EMVSelect(channel, ActivateField, LeaveFieldON, buf, len, Result, MaxResultLen, ResultLen, sw, NULL);
 385
 386         return res;
 387 }
 388
 389 int EMVSearchPSE(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t PSENum, bool decodeTLV, struct tlvdb *tlv) {
 390         uint8_t data[APDU_RESPONSE_LEN] = {0};
 391         size_t datalen = 0;
 392         uint16_t sw = 0;
 393         int res;
 394
 395         char *PSE_or_PPSE = PSENum == 1 ? "PSE" : "PPSE";
 396
 397         // select PPSE
 398         res = EMVSelectPSE(channel, ActivateField, true, PSENum, data, sizeof(data), &datalen, &sw);
 399
 400         if (!res){
 401                 struct tlvdb *t = NULL;
 402                 t = tlvdb_parse_multi(data, datalen);
 403                 if (t) {
 404                         int retrycnt = 0;
 405                         struct tlvdb *ttmp = tlvdb_find_path(t, (tlv_tag_t[]){0x6f, 0xa5, 0xbf0c, 0x61, 0x00});
 406                         if (!ttmp)
 407                                 PrintAndLogEx(FAILED, "%s doesn't have any records.", PSE_or_PPSE);
 408
 409                         while (ttmp) {
 410                                 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x4f, NULL);
 411                                 if (tgAID) {
 412                                         res = EMVSelect(channel, false, true, (uint8_t *)tgAID->value, tgAID->len, data, sizeof(data), &datalen, &sw, tlv);
 413
 414                                         // retry if error and not returned sw error
 415                                         if (res && res != 5) {
 416                                                 if (++retrycnt < 3){
 417                                                         continue;
 418                                                 } else {
 419                                                         // card select error, proxmark error
 420                                                         if (res == 1) {
 421                                                                 PrintAndLogEx(WARNING, "Exit...");
 422                                                                 return 1;
 423                                                         }
 424
 425                                                         retrycnt = 0;
 426                                                         PrintAndLogEx(NORMAL, "Retry failed [%s]. Skiped...", sprint_hex_inrow(tgAID->value, tgAID->len));
 427                                                 }
 428
 429                                                 // next element
 430                                                 ttmp = tlvdb_find_next(ttmp, 0x61);
 431                                                 continue;
 432                                         }
 433                                         retrycnt = 0;
 434
 435                                         // all is ok
 436                                         if (decodeTLV){
 437                                                 PrintAndLogEx(NORMAL, "%s:", sprint_hex_inrow(tgAID->value, tgAID->len));
 438                                                 TLVPrintFromBuffer(data, datalen);
 439                                         }
 440                                 }
 441
 442                                 ttmp = tlvdb_find_next(ttmp, 0x61);
 443                         }
 444
 445                         tlvdb_free(t);
 446                 } else {
 447                         PrintAndLogEx(WARNING, "%s ERROR: Can't get TLV from response.", PSE_or_PPSE);
 448                 }
 449         } else {
 450                 PrintAndLogEx(WARNING, "%s ERROR: Can't select PPSE AID. Error: %d", PSE_or_PPSE, res);
 451         }
 452
 453         if(!LeaveFieldON && channel == ECC_CONTACTLESS)
 454                 DropField();
 455
 456         return res;
 457 }
 458
 459 int EMVSearch(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvdb *tlv) {
 460         uint8_t aidbuf[APDU_DATA_LEN] = {0};
 461         int aidlen = 0;
 462         uint8_t data[APDU_RESPONSE_LEN] = {0};
 463         size_t datalen = 0;
 464         uint16_t sw = 0;
 465
 466         int res = 0;
 467         int retrycnt = 0;
 468         for(int i = 0; i < AIDlistLen; i ++) {
 469                 param_gethex_to_eol(AIDlist[i].aid, 0, aidbuf, sizeof(aidbuf), &aidlen);
 470                 res = EMVSelect(channel, (i == 0) ? ActivateField : false, (i == AIDlistLen - 1) ? LeaveFieldON : true, aidbuf, aidlen, data, sizeof(data), &datalen, &sw, tlv);
 471                 // retry if error and not returned sw error
 472                 if (res && res != 5) {
 473                         if (++retrycnt < 3){
 474                                 i--;
 475                         } else {
 476                                 // (1) - card select error, proxmark error OR (200) - result length = 0
 477                                 if (res == 1 || res == 200) {
 478                                         PrintAndLogEx(WARNING, "Exit...");
 479                                         return 1;
 480                                 }
 481
 482                                 retrycnt = 0;
 483                                 PrintAndLogEx(FAILED, "Retry failed [%s]. Skipped...", AIDlist[i].aid);
 484                         }
 485                         continue;
 486                 }
 487                 retrycnt = 0;
 488
 489                 if (res)
 490                         continue;
 491
 492                 if (!datalen)
 493                         continue;
 494
 495                 if (decodeTLV) {
 496                         PrintAndLogEx(SUCCESS, "%s", AIDlist[i].aid);
 497                         TLVPrintFromBuffer(data, datalen);
 498                 }
 499         }
 500
 501         return 0;
 502 }
 503
 504 int EMVSelectApplication(struct tlvdb *tlv, uint8_t *AID, size_t *AIDlen) {
 505         // check priority. 0x00 - highest
 506         int prio = 0xffff;
 507
 508         *AIDlen = 0;
 509
 510         struct tlvdb *ttmp = tlvdb_find(tlv, 0x6f);
 511         if (!ttmp)
 512                 return 1;
 513
 514         while (ttmp) {
 515                 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x84, NULL);
 516                 const struct tlv *tgPrio = tlvdb_get_inchild(ttmp, 0x87, NULL);
 517
 518                 if (!tgAID)
 519                         break;
 520
 521                 if (tgPrio) {
 522                         int pt = bytes_to_num((uint8_t*)tgPrio->value, (tgPrio->len < 2) ? tgPrio->len : 2);
 523                         if (pt < prio) {
 524                                 prio = pt;
 525
 526                                 memcpy(AID, tgAID->value, tgAID->len);
 527                                 *AIDlen = tgAID->len;
 528                         }
 529                 } else {
 530                         // takes the first application from list wo priority
 531                         if (!*AIDlen) {
 532                         memcpy(AID, tgAID->value, tgAID->len);
 533                         *AIDlen = tgAID->len;
 534                         }
 535                 }
 536
 537                 ttmp = tlvdb_find_next(ttmp, 0x6f);
 538         }
 539
 540         return 0;
 541 }
 542
 543 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)
 544 {
 545         uint8_t GPO_APDU[APDU_COMMAND_LEN] = {0x80, 0xa8, 0x00, 0x00, PDOLLen, 0x00};
 546         memcpy(GPO_APDU + 5, PDOL, PDOLLen);
 547         int apdulen = 5 + PDOLLen;
 548
 549         return EMVExchange(channel, LeaveFieldON, GPO_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
 550 }
 551
 552 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)
 553 {
 554         uint8_t read_APDU[5] = {0x00, ISO7816_READ_RECORDS, SFIrec, (SFI << 3) | 0x04, 0x00};
 555         int res = EMVExchange(channel, LeaveFieldON, read_APDU, sizeof(read_APDU), Result, MaxResultLen, ResultLen, sw, tlv);
 556         if (*sw == 0x6700) {
 557                 PrintAndLogEx(INFO, ">>> trying to reissue command withouth Le...");
 558                 res = EMVExchangeEx(channel, false, LeaveFieldON, read_APDU, sizeof(read_APDU), Result, MaxResultLen, ResultLen, sw, tlv);
 559         }
 560         return res;
 561 }
 562
 563 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)
 564 {
 565         uint8_t CDOL_APDU[APDU_COMMAND_LEN] = {0x80, 0xae, RefControl, 0x00, CDOLLen, 0x00};
 566         memcpy(CDOL_APDU + 5, CDOL, CDOLLen);
 567         int apdulen = 5 + CDOLLen;
 568
 569         return EMVExchange(channel, LeaveFieldON, CDOL_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
 570 }
 571
 572 int EMVGenerateChallenge(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
 573 {
 574         uint8_t get_challenge_APDU[APDU_COMMAND_LEN] = {0x00, ISO7816_GET_CHALLENGE, 0x00, 0x00};
 575
 576         int res = EMVExchange(channel, LeaveFieldON, get_challenge_APDU, 4, Result, MaxResultLen, ResultLen, sw, tlv);
 577         if (*sw == 0x6700) {
 578                 PrintAndLogEx(INFO, ">>> trying to reissue command withouth Le...");
 579                 res = EMVExchangeEx(channel, false, LeaveFieldON, get_challenge_APDU, 4, Result, MaxResultLen, ResultLen, sw, tlv);
 580         }
 581         return res;
 582 }
 583
 584 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)
 585 {
 586         uint8_t authenticate_APDU[APDU_COMMAND_LEN] = {0x00, ISO7816_INTERNAL_AUTHENTICATION, 0x00, 0x00, DDOLLen, 0x00};
 587         memcpy(authenticate_APDU + 5, DDOL, DDOLLen);
 588         int apdulen = 5 + DDOLLen;
 589
 590         return EMVExchange(channel, LeaveFieldON, authenticate_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
 591 }
 592
 593 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)
 594 {
 595         uint8_t checksum_APDU[APDU_COMMAND_LEN] = {0x80, 0x2a, 0x8e, 0x80, UDOLlen, 0x00};
 596         memcpy(checksum_APDU + 5, UDOL, UDOLlen);
 597         int apdulen = 5 + UDOLlen;
 598
 599         return EMVExchange(channel, LeaveFieldON, checksum_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
 600 }
 601
 602 // Authentication
 603 struct emv_pk *get_ca_pk(struct tlvdb *db) {
 604         const struct tlv *df_tlv = tlvdb_get(db, 0x84, NULL);
 605         const struct tlv *caidx_tlv = tlvdb_get(db, 0x8f, NULL);
 606
 607         if (!df_tlv || !caidx_tlv || df_tlv->len < 6 || caidx_tlv->len != 1)
 608                 return NULL;
 609
 610         PrintAndLogEx(NORMAL, "CA public key index 0x%0x", caidx_tlv->value[0]);
 611         return emv_pk_get_ca_pk(df_tlv->value, caidx_tlv->value[0]);
 612 }
 613
 614 int trSDA(struct tlvdb *tlv) {
 615
 616         struct emv_pk *pk = get_ca_pk(tlv);
 617         if (!pk) {
 618                 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
 619                 return 2;
 620         }
 621
 622         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
 623         if (!issuer_pk) {
 624                 emv_pk_free(pk);
 625                 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
 626                 return 2;
 627         }
 628
 629         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx",
 630                 issuer_pk->rid[0],
 631                 issuer_pk->rid[1],
 632                 issuer_pk->rid[2],
 633                 issuer_pk->rid[3],
 634                 issuer_pk->rid[4],
 635                 issuer_pk->index,
 636                 issuer_pk->serial[0],
 637                 issuer_pk->serial[1],
 638                 issuer_pk->serial[2]
 639                 );
 640
 641         const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
 642         if (!sda_tlv || sda_tlv->len < 1) {
 643                 emv_pk_free(issuer_pk);
 644                 emv_pk_free(pk);
 645                 PrintAndLogEx(WARNING, "Can't find input list for Offline Data Authentication. Exit.");
 646                 return 3;
 647         }
 648
 649         struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
 650         if (dac_db) {
 651                 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
 652                 PrintAndLogEx(NORMAL, "SDA verified OK. (%02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]);
 653                 tlvdb_add(tlv, dac_db);
 654         } else {
 655                 emv_pk_free(issuer_pk);
 656                 emv_pk_free(pk);
 657                 PrintAndLogEx(WARNING, "SSAD verify error");
 658                 return 4;
 659         }
 660
 661         emv_pk_free(issuer_pk);
 662         emv_pk_free(pk);
 663         return 0;
 664 }
 665
 666 static const unsigned char default_ddol_value[] = {0x9f, 0x37, 0x04};
 667 static struct tlv default_ddol_tlv = {.tag = 0x9f49, .len = 3, .value = default_ddol_value };
 668
 669 int trDDA(EMVCommandChannel channel, bool decodeTLV, struct tlvdb *tlv) {
 670         uint8_t buf[APDU_RESPONSE_LEN] = {0};
 671         size_t len = 0;
 672         uint16_t sw = 0;
 673
 674         struct emv_pk *pk = get_ca_pk(tlv);
 675         if (!pk) {
 676                 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
 677                 return 2;
 678         }
 679
 680         const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
 681         if (!sda_tlv || sda_tlv->len < 1) {
 682                 emv_pk_free(pk);
 683                 PrintAndLogEx(WARNING, "Error: Can't find input list for Offline Data Authentication. Exit.");
 684                 return 3;
 685         }
 686
 687         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
 688         if (!issuer_pk) {
 689                 emv_pk_free(pk);
 690                 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
 691                 return 2;
 692         }
 693         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 694                         issuer_pk->rid[0],
 695                         issuer_pk->rid[1],
 696                         issuer_pk->rid[2],
 697                         issuer_pk->rid[3],
 698                         issuer_pk->rid[4],
 699                         issuer_pk->index,
 700                         issuer_pk->serial[0],
 701                         issuer_pk->serial[1],
 702                         issuer_pk->serial[2]
 703                         );
 704
 705         struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
 706         if (!icc_pk) {
 707                 emv_pk_free(pk);
 708                 emv_pk_free(issuer_pk);
 709                 PrintAndLogEx(WARNING, "Error: ICC setrificate not found. Exit.");
 710                 return 2;
 711         }
 712         PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 713                         icc_pk->rid[0],
 714                         icc_pk->rid[1],
 715                         icc_pk->rid[2],
 716                         icc_pk->rid[3],
 717                         icc_pk->rid[4],
 718                         icc_pk->index,
 719                         icc_pk->serial[0],
 720                         icc_pk->serial[1],
 721                         icc_pk->serial[2]
 722                         );
 723
 724         struct emv_pk *icc_pe_pk = emv_pki_recover_icc_pe_cert(issuer_pk, tlv);
 725         if (!icc_pe_pk) {
 726                 PrintAndLogEx(WARNING, "WARNING: ICC PE PK recover error. ");
 727         } else {
 728                 PrintAndLogEx(SUCCESS, "ICC PE PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 729                                 icc_pe_pk->rid[0],
 730                                 icc_pe_pk->rid[1],
 731                                 icc_pe_pk->rid[2],
 732                                 icc_pe_pk->rid[3],
 733                                 icc_pe_pk->rid[4],
 734                                 icc_pe_pk->index,
 735                                 icc_pe_pk->serial[0],
 736                                 icc_pe_pk->serial[1],
 737                                 icc_pe_pk->serial[2]
 738                                 );
 739         }
 740
 741         // 9F4B: Signed Dynamic Application Data
 742         const struct tlv *sdad_tlv = tlvdb_get(tlv, 0x9f4b, NULL);
 743         // DDA with internal authenticate OR fDDA with filled 0x9F4B tag (GPO result)
 744         // EMV kernel3 v2.4, contactless book C-3, C.1., page 147
 745         if (sdad_tlv) {
 746                 PrintAndLogEx(NORMAL, "\n* * Got Signed Dynamic Application Data (9F4B) form GPO. Maybe fDDA...");
 747
 748                 const struct tlvdb *atc_db = emv_pki_recover_atc_ex(icc_pk, tlv, true);
 749                 if (!atc_db) {
 750                         PrintAndLogEx(WARNING, "Error: Can't recover IDN (ICC Dynamic Number)");
 751                         emv_pk_free(pk);
 752                         emv_pk_free(issuer_pk);
 753                         emv_pk_free(icc_pk);
 754                         return 8;
 755                 }
 756
 757                 // 9f36 Application Transaction Counter (ATC)
 758                 const struct tlv *atc_tlv = tlvdb_get(atc_db, 0x9f36, NULL);
 759                 if(atc_tlv) {
 760                         PrintAndLogEx(NORMAL, "\nATC (Application Transaction Counter) [%zu] %s", atc_tlv->len, sprint_hex_inrow(atc_tlv->value, atc_tlv->len));
 761
 762                         const struct tlv *core_atc_tlv = tlvdb_get(tlv, 0x9f36, NULL);
 763                         if(tlv_equal(core_atc_tlv, atc_tlv)) {
 764                                 PrintAndLogEx(SUCCESS, "ATC check OK.");
 765                                 PrintAndLogEx(SUCCESS, "fDDA (fast DDA) verified OK.");
 766                         } else {
 767                                 PrintAndLogEx(WARNING, "Error: fDDA verified, but ATC in the certificate and ATC in the record not the same.");
 768                         }
 769                 } else {
 770                         PrintAndLogEx(NORMAL, "\nERROR: fDDA (fast DDA) verify error");
 771                         emv_pk_free(pk);
 772                         emv_pk_free(issuer_pk);
 773                         emv_pk_free(icc_pk);
 774                         return 9;
 775                 }
 776         } else {
 777                 struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
 778                 if (dac_db) {
 779                         const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
 780                         PrintAndLogEx(NORMAL, "SDA verified OK. (%02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]);
 781                         tlvdb_add(tlv, dac_db);
 782                 } else {
 783                         PrintAndLogEx(WARNING, "Error: SSAD verify error");
 784                         emv_pk_free(pk);
 785                         emv_pk_free(issuer_pk);
 786                         emv_pk_free(icc_pk);
 787                         return 4;
 788                 }
 789
 790                 PrintAndLogEx(NORMAL, "\n* Calc DDOL");
 791                 const struct tlv *ddol_tlv = tlvdb_get(tlv, 0x9f49, NULL);
 792                 if (!ddol_tlv) {
 793                         ddol_tlv = &default_ddol_tlv;
 794                         PrintAndLogEx(NORMAL, "DDOL [9f49] not found. Using default DDOL");
 795                 }
 796
 797                 struct tlv *ddol_data_tlv = dol_process(ddol_tlv, tlv, 0);
 798                 if (!ddol_data_tlv) {
 799                         PrintAndLogEx(WARNING, "Error: Can't create DDOL TLV");
 800                         emv_pk_free(pk);
 801                         emv_pk_free(issuer_pk);
 802                         emv_pk_free(icc_pk);
 803                         return 5;
 804                 }
 805
 806                 PrintAndLogEx(NORMAL, "DDOL data[%d]: %s", ddol_data_tlv->len, sprint_hex(ddol_data_tlv->value, ddol_data_tlv->len));
 807
 808                 PrintAndLogEx(NORMAL, "\n* Internal Authenticate");
 809                 int res = EMVInternalAuthenticate(channel, true, (uint8_t *)ddol_data_tlv->value, ddol_data_tlv->len, buf, sizeof(buf), &len, &sw, NULL);
 810                 if (res) {
 811                         PrintAndLogEx(WARNING, "Internal Authenticate error(%d): %4x. Exit...", res, sw);
 812                         free(ddol_data_tlv);
 813                         emv_pk_free(pk);
 814                         emv_pk_free(issuer_pk);
 815                         emv_pk_free(icc_pk);
 816                         return 6;
 817                 }
 818
 819                 struct tlvdb *dda_db = NULL;
 820                 if (buf[0] == 0x80) {
 821                         if (len < 3 ) {
 822                                 PrintAndLogEx(WARNING, "Error: Internal Authenticate format1 parsing error. length=%d", len);
 823                         } else {
 824                                 // 9f4b Signed Dynamic Application Data
 825                                 dda_db = tlvdb_fixed(0x9f4b, len - 2, buf + 2);
 826                                 tlvdb_add(tlv, dda_db);
 827                                 if (decodeTLV){
 828                                         PrintAndLogEx(NORMAL, "* * Decode response format 1:");
 829                                         TLVPrintFromTLV(dda_db);
 830                                 }
 831                         }
 832                 } else {
 833                         dda_db = tlvdb_parse_multi(buf, len);
 834                         if(!dda_db) {
 835                                 PrintAndLogEx(WARNING, "Error: Can't parse Internal Authenticate result as TLV");
 836                                 free(ddol_data_tlv);
 837                                 emv_pk_free(pk);
 838                                 emv_pk_free(issuer_pk);
 839                                 emv_pk_free(icc_pk);
 840                                 return 7;
 841                         }
 842                         tlvdb_add(tlv, dda_db);
 843
 844                         if (decodeTLV)
 845                                 TLVPrintFromTLV(dda_db);
 846                 }
 847
 848                 struct tlvdb *idn_db = emv_pki_recover_idn_ex(icc_pk, dda_db, ddol_data_tlv, true);
 849                 free(ddol_data_tlv);
 850                 if (!idn_db) {
 851                         PrintAndLogEx(WARNING, "Error: Can't recover IDN (ICC Dynamic Number)");
 852                         tlvdb_free(dda_db);
 853                         emv_pk_free(pk);
 854                         emv_pk_free(issuer_pk);
 855                         emv_pk_free(icc_pk);
 856                         return 8;
 857                 }
 858                 tlvdb_free(dda_db);
 859
 860                 // 9f4c ICC Dynamic Number
 861                 const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL);
 862                 if(idn_tlv) {
 863                         PrintAndLogEx(NORMAL, "\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len));
 864                         PrintAndLogEx(NORMAL, "DDA verified OK.");
 865                         tlvdb_add(tlv, idn_db);
 866                         tlvdb_free(idn_db);
 867                 } else {
 868                         PrintAndLogEx(NORMAL, "\nERROR: DDA verify error");
 869                         tlvdb_free(idn_db);
 870
 871                         emv_pk_free(pk);
 872                         emv_pk_free(issuer_pk);
 873                         emv_pk_free(icc_pk);
 874                         return 9;
 875                 }
 876         }
 877
 878         emv_pk_free(pk);
 879         emv_pk_free(issuer_pk);
 880         emv_pk_free(icc_pk);
 881         return 0;
 882 }
 883
 884 int trCDA(struct tlvdb *tlv, struct tlvdb *ac_tlv, struct tlv *pdol_data_tlv, struct tlv *ac_data_tlv) {
 885
 886         struct emv_pk *pk = get_ca_pk(tlv);
 887         if (!pk) {
 888                 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
 889                 return 2;
 890         }
 891
 892         const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
 893         if (!sda_tlv || sda_tlv->len < 1) {
 894                 PrintAndLogEx(WARNING, "Error: Can't find input list for Offline Data Authentication. Exit.");
 895                 emv_pk_free(pk);
 896                 return 3;
 897         }
 898
 899         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
 900         if (!issuer_pk) {
 901                 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
 902                 emv_pk_free(pk);
 903                 return 2;
 904         }
 905         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 906                         issuer_pk->rid[0],
 907                         issuer_pk->rid[1],
 908                         issuer_pk->rid[2],
 909                         issuer_pk->rid[3],
 910                         issuer_pk->rid[4],
 911                         issuer_pk->index,
 912                         issuer_pk->serial[0],
 913                         issuer_pk->serial[1],
 914                         issuer_pk->serial[2]
 915                         );
 916
 917         struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
 918         if (!icc_pk) {
 919                 PrintAndLogEx(WARNING, "Error: ICC setrificate not found. Exit.");
 920                 emv_pk_free(pk);
 921                 emv_pk_free(issuer_pk);
 922                 return 2;
 923         }
 924         PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 925                         icc_pk->rid[0],
 926                         icc_pk->rid[1],
 927                         icc_pk->rid[2],
 928                         icc_pk->rid[3],
 929                         icc_pk->rid[4],
 930                         icc_pk->index,
 931                         icc_pk->serial[0],
 932                         icc_pk->serial[1],
 933                         icc_pk->serial[2]
 934                         );
 935
 936         struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
 937         if (dac_db) {
 938                 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
 939                 PrintAndLogEx(NORMAL, "SSAD verified OK. (%02hhx:%02hhx)", dac_tlv->value[0], dac_tlv->value[1]);
 940                 tlvdb_add(tlv, dac_db);
 941         } else {
 942                 PrintAndLogEx(WARNING, "Error: SSAD verify error");
 943                 emv_pk_free(pk);
 944                 emv_pk_free(issuer_pk);
 945                 emv_pk_free(icc_pk);
 946                 return 4;
 947         }
 948
 949         PrintAndLogEx(NORMAL, "\n* * Check Signed Dynamic Application Data (SDAD)");
 950         struct tlvdb *idn_db = emv_pki_perform_cda_ex(icc_pk, tlv, ac_tlv,
 951                         pdol_data_tlv, // pdol
 952                         ac_data_tlv,   // cdol1
 953                         NULL,          // cdol2
 954                         true);
 955         if (idn_db) {
 956                 const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL);
 957                 PrintAndLogEx(NORMAL, "\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len));
 958                 PrintAndLogEx(NORMAL, "CDA verified OK.");
 959                 tlvdb_add(tlv, idn_db);
 960         } else {
 961                 PrintAndLogEx(NORMAL, "\nERROR: CDA verify error");
 962         }
 963
 964         emv_pk_free(pk);
 965         emv_pk_free(issuer_pk);
 966         emv_pk_free(icc_pk);
 967         return 0;
 968 }
 969
 970 int RecoveryCertificates(struct tlvdb *tlvRoot, json_t *root) {
 971
 972         struct emv_pk *pk = get_ca_pk(tlvRoot);
 973         if (!pk) {
 974                 PrintAndLog("ERROR: Key not found. Exit.");
 975                 return 1;
 976         }
 977
 978         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlvRoot);
 979         if (!issuer_pk) {
 980                 emv_pk_free(pk);
 981                 PrintAndLog("WARNING: Issuer certificate not found. Exit.");
 982                 return 2;
 983         }
 984         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx",
 985                         issuer_pk->rid[0],
 986                         issuer_pk->rid[1],
 987                         issuer_pk->rid[2],
 988                         issuer_pk->rid[3],
 989                         issuer_pk->rid[4],
 990                         issuer_pk->index,
 991                         issuer_pk->serial[0],
 992                         issuer_pk->serial[1],
 993                         issuer_pk->serial[2]
 994                         );
 995
 996         JsonSaveBufAsHex(root, "$.ApplicationData.RID", issuer_pk->rid, 5);
 997
 998         char *issuer_pk_c = emv_pk_dump_pk(issuer_pk);
 999         JsonSaveStr(root, "$.ApplicationData.IssuerPublicKeyDec", issuer_pk_c);
1000         JsonSaveBufAsHex(root, "$.ApplicationData.IssuerPublicKeyModulus", issuer_pk->modulus, issuer_pk->mlen);
1001         free(issuer_pk_c);
1002
1003         struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlvRoot, NULL);
1004         if (!icc_pk) {
1005                 emv_pk_free(pk);
1006                 emv_pk_free(issuer_pk);
1007                 PrintAndLogEx(WARNING, "WARNING: ICC certificate not found. Exit.");
1008                 return 2;
1009         }
1010         PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
1011                         icc_pk->rid[0],
1012                         icc_pk->rid[1],
1013                         icc_pk->rid[2],
1014                         icc_pk->rid[3],
1015                         icc_pk->rid[4],
1016                         icc_pk->index,
1017                         icc_pk->serial[0],
1018                         icc_pk->serial[1],
1019                         icc_pk->serial[2]
1020                         );
1021
1022         char *icc_pk_c = emv_pk_dump_pk(icc_pk);
1023         JsonSaveStr(root, "$.ApplicationData.ICCPublicKeyDec", icc_pk_c);
1024         JsonSaveBufAsHex(root, "$.ApplicationData.ICCPublicKeyModulus", icc_pk->modulus, icc_pk->mlen);
1025         free(issuer_pk_c);
1026
1027         return 0;
1028 }