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