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