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 #ifdef WITH_SMARTCARD
  15 #include "cmdsmartcard.h"
  16 #endif
  17
  18 // Got from here. Thanks)
  19 // https://eftlab.co.uk/index.php/site-map/knowledge-base/211-emv-aid-rid-pix
  20 static const char *PSElist [] = {
  21         "325041592E5359532E4444463031", // 2PAY.SYS.DDF01 - Visa Proximity Payment System Environment - PPSE
  22         "315041592E5359532E4444463031"  // 1PAY.SYS.DDF01 - Visa Payment System Environment - PSE
  23 };
  24 //static const size_t PSElistLen = sizeof(PSElist)/sizeof(char*);
  25
  26 char *TransactionTypeStr[] = {
  27         "MSD",
  28         "VSDC",
  29         "qVCDCMCHIP",
  30         "CDA"
  31 };
  32
  33 typedef struct {
  34         enum CardPSVendor vendor;
  35         const char* aid;
  36 } TAIDList;
  37
  38 static const TAIDList AIDlist [] = {
  39         // Visa International
  40         { CV_VISA,      "A00000000305076010"},                  // VISA ELO Credit
  41         { CV_VISA,      "A0000000031010" },                             // VISA Debit/Credit (Classic)
  42         { CV_VISA,      "A000000003101001" },                   // VISA Credit
  43         { CV_VISA,      "A000000003101002" },                   // VISA Debit
  44         { CV_VISA,      "A0000000032010" },                             // VISA Electron
  45         { CV_VISA,      "A0000000032020" },                             // VISA
  46         { CV_VISA,      "A0000000033010" },                             // VISA Interlink
  47         { CV_VISA,      "A0000000034010" },                             // VISA Specific
  48         { CV_VISA,      "A0000000035010" },                             // VISA Specific
  49         { CV_VISA,      "A0000000036010" },                             // Domestic Visa Cash Stored Value
  50         { CV_VISA,      "A0000000036020" },                             // International Visa Cash Stored Value
  51         { CV_VISA,      "A0000000038002" },                             // VISA Auth, VisaRemAuthen EMV-CAP (DPA)
  52         { CV_VISA,      "A0000000038010" },                             // VISA Plus
  53         { CV_VISA,      "A0000000039010" },                             // VISA Loyalty
  54         { CV_VISA,      "A000000003999910" },                   // VISA Proprietary ATM
  55         // Visa USA
  56         { CV_VISA,      "A000000098" },                                 // Debit Card
  57         { CV_VISA,      "A0000000980848" },                             // Debit Card
  58         // Mastercard International
  59         { CV_MASTERCARD, "A00000000401" },                      // MasterCard PayPass
  60         { CV_MASTERCARD, "A0000000041010" },            // MasterCard Credit
  61         { CV_MASTERCARD, "A00000000410101213" },        // MasterCard Credit
  62         { CV_MASTERCARD, "A00000000410101215" },        // MasterCard Credit
  63         { CV_MASTERCARD, "A0000000042010" },            // MasterCard Specific
  64         { CV_MASTERCARD, "A0000000043010" },            // MasterCard Specific
  65         { CV_MASTERCARD, "A0000000043060" },            // Maestro (Debit)
  66         { CV_MASTERCARD, "A000000004306001" },          // Maestro (Debit)
  67         { CV_MASTERCARD, "A0000000044010" },            // MasterCard Specific
  68         { CV_MASTERCARD, "A0000000045010" },            // MasterCard Specific
  69         { CV_MASTERCARD, "A0000000046000" },            // Cirrus
  70         { CV_MASTERCARD, "A0000000048002" },            // SecureCode Auth EMV-CAP
  71         { CV_MASTERCARD, "A0000000049999" },            // MasterCard PayPass
  72         // American Express
  73         { CV_AMERICANEXPRESS, "A000000025" },
  74         { CV_AMERICANEXPRESS, "A0000000250000" },
  75         { CV_AMERICANEXPRESS, "A00000002501" },
  76         { CV_AMERICANEXPRESS, "A000000025010402" },
  77         { CV_AMERICANEXPRESS, "A000000025010701" },
  78         { CV_AMERICANEXPRESS, "A000000025010801" },
  79         // Groupement des Cartes Bancaires "CB"
  80         { CV_CB, "A0000000421010" },                            // Cartes Bancaire EMV Card
  81         { CV_CB, "A0000000422010" },
  82         { CV_CB, "A0000000423010" },
  83         { CV_CB, "A0000000424010" },
  84         { CV_CB, "A0000000425010" },
  85         // JCB CO., LTD.
  86         { CV_JCB, "A00000006510" },                                     // JCB
  87         { CV_JCB, "A0000000651010" },                           // JCB J Smart Credit
  88         // Other
  89         { CV_OTHER, "A0000001544442" },                         // Banricompras Debito - Banrisul - Banco do Estado do Rio Grande do SUL - S.A.
  90         { CV_OTHER, "F0000000030001" },                         // BRADESCO
  91         { CV_OTHER, "A0000005241010" },                         // RuPay - RuPay
  92         { CV_OTHER, "D5780000021010" }                          // Bankaxept - Bankaxept
  93 };
  94 static const size_t AIDlistLen = sizeof(AIDlist)/sizeof(TAIDList);
  95
  96 static bool APDULogging = false;
  97 void SetAPDULogging(bool logging) {
  98         APDULogging = logging;
  99 }
 100
 101 enum CardPSVendor GetCardPSVendor(uint8_t * AID, size_t AIDlen) {
 102         char buf[100] = {0};
 103         if (AIDlen < 1)
 104                 return CV_NA;
 105
 106         hex_to_buffer((uint8_t *)buf, AID, AIDlen, sizeof(buf) - 1, 0, 0, true);
 107
 108         for(int i = 0; i < AIDlistLen; i ++) {
 109                 if (strncmp(AIDlist[i].aid, buf, strlen(AIDlist[i].aid)) == 0){
 110                         return AIDlist[i].vendor;
 111                 }
 112         }
 113
 114         return CV_NA;
 115 }
 116
 117 static bool print_cb(void *data, const struct tlv *tlv, int level, bool is_leaf) {
 118         emv_tag_dump(tlv, stdout, level);
 119         if (is_leaf) {
 120                 dump_buffer(tlv->value, tlv->len, stdout, level);
 121         }
 122
 123         return true;
 124 }
 125
 126 void TLVPrintFromBuffer(uint8_t *data, int datalen) {
 127         struct tlvdb *t = NULL;
 128         t = tlvdb_parse_multi(data, datalen);
 129         if (t) {
 130                 PrintAndLogEx(NORMAL, "-------------------- TLV decoded --------------------");
 131
 132                 tlvdb_visit(t, print_cb, NULL, 0);
 133                 tlvdb_free(t);
 134         } else {
 135                 PrintAndLogEx(WARNING, "TLV ERROR: Can't parse response as TLV tree.");
 136         }
 137 }
 138
 139 void TLVPrintFromTLVLev(struct tlvdb *tlv, int level) {
 140         if (!tlv)
 141                 return;
 142
 143         tlvdb_visit(tlv, print_cb, NULL, level);
 144 }
 145
 146 void TLVPrintFromTLV(struct tlvdb *tlv) {
 147         TLVPrintFromTLVLev(tlv, 0);
 148 }
 149
 150 void TLVPrintAIDlistFromSelectTLV(struct tlvdb *tlv) {
 151         PrintAndLogEx(NORMAL, "|------------------|--------|-------------------------|");
 152         PrintAndLogEx(NORMAL, "|    AID           |Priority| Name                    |");
 153         PrintAndLogEx(NORMAL, "|------------------|--------|-------------------------|");
 154
 155         struct tlvdb *ttmp = tlvdb_find(tlv, 0x6f);
 156         if (!ttmp)
 157                 PrintAndLogEx(NORMAL, "|                         none                        |");
 158
 159         while (ttmp) {
 160                 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x84, NULL);
 161                 const struct tlv *tgName = tlvdb_get_inchild(ttmp, 0x50, NULL);
 162                 const struct tlv *tgPrio = tlvdb_get_inchild(ttmp, 0x87, NULL);
 163                 if (!tgAID)
 164                         break;
 165                 PrintAndLogEx(NORMAL, "|%s|   %s  |%s|",
 166                         sprint_hex_inrow_ex(tgAID->value, tgAID->len, 18),
 167                         (tgPrio) ? sprint_hex(tgPrio->value, 1) : "   ",
 168                         (tgName) ? sprint_ascii_ex(tgName->value, tgName->len, 25) : "                         ");
 169
 170                 ttmp = tlvdb_find_next(ttmp, 0x6f);
 171         }
 172
 173         PrintAndLogEx(NORMAL, "|------------------|--------|-------------------------|");
 174 }
 175
 176 struct tlvdb *GetPANFromTrack2(const struct tlv *track2) {
 177         char track2Hex[200] = {0};
 178         uint8_t PAN[100] = {0};
 179         int PANlen = 0;
 180         char *tmp = track2Hex;
 181
 182         if (!track2)
 183                 return NULL;
 184
 185         for (int i = 0; i < track2->len; ++i, tmp += 2)
 186                 sprintf(tmp, "%02x", (unsigned int)track2->value[i]);
 187
 188         int posD = strchr(track2Hex, 'd') - track2Hex;
 189         if (posD < 1)
 190                 return NULL;
 191
 192         track2Hex[posD] = 0;
 193         if (strlen(track2Hex) % 2) {
 194                 track2Hex[posD] = 'F';
 195                 track2Hex[posD + 1] = '\0';
 196         }
 197
 198         param_gethex_to_eol(track2Hex, 0, PAN, sizeof(PAN), &PANlen);
 199
 200   return tlvdb_fixed(0x5a, PANlen, PAN);
 201 }
 202
 203 struct tlvdb *GetdCVVRawFromTrack2(const struct tlv *track2) {
 204         char track2Hex[200] = {0};
 205         char dCVVHex[100] = {0};
 206         uint8_t dCVV[100] = {0};
 207         int dCVVlen = 0;
 208         const int PINlen = 5; // must calculated from 9F67 MSD Offset but i have not seen this tag)
 209         char *tmp = track2Hex;
 210
 211         if (!track2)
 212                 return NULL;
 213
 214         for (int i = 0; i < track2->len; ++i, tmp += 2)
 215                 sprintf(tmp, "%02x", (unsigned int)track2->value[i]);
 216
 217         int posD = strchr(track2Hex, 'd') - track2Hex;
 218         if (posD < 1)
 219                 return NULL;
 220
 221         memset(dCVVHex, '0', 32);
 222         // ATC
 223         memcpy(dCVVHex + 0, track2Hex + posD + PINlen + 11, 4);
 224         // PAN 5 hex
 225         memcpy(dCVVHex + 4, track2Hex, 5);
 226         // expire date
 227         memcpy(dCVVHex + 9, track2Hex + posD + 1, 4);
 228         // service code
 229         memcpy(dCVVHex + 13, track2Hex + posD + 5, 3);
 230
 231         param_gethex_to_eol(dCVVHex, 0, dCVV, sizeof(dCVV), &dCVVlen);
 232
 233   return tlvdb_fixed(0x02, dCVVlen, dCVV);
 234 }
 235
 236 int EMVExchangeEx(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, sAPDU apdu, bool IncludeLe, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
 237         uint8_t data[APDU_RES_LEN] = {0};
 238
 239         *ResultLen = 0;
 240         if (sw) *sw = 0;
 241         uint16_t isw = 0;
 242         int res = 0;
 243
 244         if (ActivateField) {
 245                 DropField();
 246                 msleep(50);
 247         }
 248
 249         // COMPUTE APDU
 250         memcpy(data, &apdu, 5);
 251         if (apdu.data)
 252                 memcpy(&data[5], apdu.data, apdu.Lc);
 253
 254         if (APDULogging)
 255                 PrintAndLogEx(SUCCESS, ">>>> %s", sprint_hex(data, (IncludeLe?6:5) + apdu.Lc));
 256
 257         switch(channel) {
 258         case ECC_CONTACTLESS:
 259                 // 6 byes + data = INS + CLA + P1 + P2 + Lc + <data = Nc> + Le(?IncludeLe)
 260                 res = ExchangeAPDU14a(data, (IncludeLe?6:5) + apdu.Lc, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
 261                 if (res) {
 262                         return res;
 263                 }
 264                 break;
 265         case ECC_CONTACT:
 266                 //int ExchangeAPDUSC(uint8_t *datain, int datainlen, bool activateCard, bool leaveSignalON, uint8_t *dataout, int maxdataoutlen, int *dataoutlen);
 267 #ifdef WITH_SMARTCARD
 268                 res = ExchangeAPDUSC(data, (IncludeLe?6:5) + apdu.Lc, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
 269                 if (res) {
 270                         return res;
 271                 }
 272 #endif
 273                 break;
 274         }
 275
 276         if (APDULogging)
 277                 PrintAndLogEx(SUCCESS, "<<<< %s", sprint_hex(Result, *ResultLen));
 278
 279         if (*ResultLen < 2) {
 280                 return 200;
 281         }
 282
 283         *ResultLen -= 2;
 284         isw = Result[*ResultLen] * 0x0100 + Result[*ResultLen + 1];
 285         if (sw)
 286                 *sw = isw;
 287
 288         if (isw != 0x9000) {
 289                 if (APDULogging) {
 290                         if (*sw >> 8 == 0x61) {
 291                                 PrintAndLogEx(ERR, "APDU chaining len:%02x -->", *sw & 0xff);
 292                         } else {
 293                                 PrintAndLogEx(ERR, "APDU(%02x%02x) ERROR: [%4X] %s", apdu.CLA, apdu.INS, isw, GetAPDUCodeDescription(*sw >> 8, *sw & 0xff));
 294                                 return 5;
 295                         }
 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, sAPDU apdu, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
 309         return EMVExchangeEx(channel, false, LeaveFieldON, apdu, (channel == ECC_CONTACTLESS), Result, MaxResultLen, ResultLen, sw, tlv);
 310 }
 311
 312 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) {
 313         return EMVExchangeEx(channel, ActivateField, LeaveFieldON, (sAPDU){0x00, 0xa4, 0x04, 0x00, AIDLen, AID}, (channel == ECC_CONTACTLESS), Result, MaxResultLen, ResultLen, sw, tlv);
 314 }
 315
 316 int EMVSelectPSE(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t PSENum, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw) {
 317         uint8_t buf[APDU_AID_LEN] = {0};
 318         *ResultLen = 0;
 319         int len = 0;
 320         int res = 0;
 321         switch (PSENum) {
 322                 case 1:
 323                         param_gethex_to_eol(PSElist[1], 0, buf, sizeof(buf), &len);
 324                         break;
 325                 case 2:
 326                         param_gethex_to_eol(PSElist[0], 0, buf, sizeof(buf), &len);
 327                         break;
 328                 default:
 329                         return -1;
 330         }
 331
 332         // select
 333         res = EMVSelect(channel, ActivateField, LeaveFieldON, buf, len, Result, MaxResultLen, ResultLen, sw, NULL);
 334
 335         return res;
 336 }
 337
 338 int EMVSearchPSE(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvdb *tlv) {
 339         uint8_t data[APDU_RES_LEN] = {0};
 340         size_t datalen = 0;
 341         uint16_t sw = 0;
 342         int res;
 343
 344         // select PPSE
 345         res = EMVSelectPSE(channel, ActivateField, true, 2, data, sizeof(data), &datalen, &sw);
 346
 347         if (!res){
 348                 struct tlvdb *t = NULL;
 349                 t = tlvdb_parse_multi(data, datalen);
 350                 if (t) {
 351                         int retrycnt = 0;
 352                         struct tlvdb *ttmp = tlvdb_find_path(t, (tlv_tag_t[]){0x6f, 0xa5, 0xbf0c, 0x61, 0x00});
 353                         if (!ttmp)
 354                                 PrintAndLogEx(FAILED, "PPSE don't have records.");
 355
 356                         while (ttmp) {
 357                                 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x4f, NULL);
 358                                 if (tgAID) {
 359                                         res = EMVSelect(channel, false, true, (uint8_t *)tgAID->value, tgAID->len, data, sizeof(data), &datalen, &sw, tlv);
 360
 361                                         // retry if error and not returned sw error
 362                                         if (res && res != 5) {
 363                                                 if (++retrycnt < 3){
 364                                                         continue;
 365                                                 } else {
 366                                                         // card select error, proxmark error
 367                                                         if (res == 1) {
 368                                                                 PrintAndLogEx(WARNING, "Exit...");
 369                                                                 return 1;
 370                                                         }
 371
 372                                                         retrycnt = 0;
 373                                                         PrintAndLogEx(NORMAL, "Retry failed [%s]. Skiped...", sprint_hex_inrow(tgAID->value, tgAID->len));
 374                                                 }
 375
 376                                                 // next element
 377                                                 ttmp = tlvdb_find_next(ttmp, 0x61);
 378                                                 continue;
 379                                         }
 380                                         retrycnt = 0;
 381
 382                                         // all is ok
 383                                         if (decodeTLV){
 384                                                 PrintAndLogEx(NORMAL, "%s:", sprint_hex_inrow(tgAID->value, tgAID->len));
 385                                                 TLVPrintFromBuffer(data, datalen);
 386                                         }
 387                                 }
 388
 389                                 ttmp = tlvdb_find_next(ttmp, 0x61);
 390                         }
 391
 392                         tlvdb_free(t);
 393                 } else {
 394                         PrintAndLogEx(WARNING, "PPSE ERROR: Can't get TLV from response.");
 395                 }
 396         } else {
 397                 PrintAndLogEx(WARNING, "PPSE ERROR: Can't select PPSE AID. Error: %d", res);
 398         }
 399
 400         if(!LeaveFieldON)
 401                 DropField();
 402
 403         return res;
 404 }
 405
 406 int EMVSearch(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvdb *tlv) {
 407         uint8_t aidbuf[APDU_AID_LEN] = {0};
 408         int aidlen = 0;
 409         uint8_t data[APDU_RES_LEN] = {0};
 410         size_t datalen = 0;
 411         uint16_t sw = 0;
 412
 413         int res = 0;
 414         int retrycnt = 0;
 415         for(int i = 0; i < AIDlistLen; i ++) {
 416                 param_gethex_to_eol(AIDlist[i].aid, 0, aidbuf, sizeof(aidbuf), &aidlen);
 417                 res = EMVSelect(channel, (i == 0) ? ActivateField : false, (i == AIDlistLen - 1) ? LeaveFieldON : true, aidbuf, aidlen, data, sizeof(data), &datalen, &sw, tlv);
 418                 // retry if error and not returned sw error
 419                 if (res && res != 5) {
 420                         if (++retrycnt < 3){
 421                                 i--;
 422                         } else {
 423                                 // (1) - card select error, proxmark error OR (200) - result length = 0
 424                                 if (res == 1 || res == 200) {
 425                                         PrintAndLogEx(WARNING, "Exit...");
 426                                         return 1;
 427                                 }
 428
 429                                 retrycnt = 0;
 430                                 PrintAndLogEx(FAILED, "Retry failed [%s]. Skipped...", AIDlist[i].aid);
 431                         }
 432                         continue;
 433                 }
 434                 retrycnt = 0;
 435
 436                 if (res)
 437                         continue;
 438
 439                 if (!datalen)
 440                         continue;
 441
 442                 if (decodeTLV) {
 443                         PrintAndLogEx(SUCCESS, "%s", AIDlist[i].aid);
 444                         TLVPrintFromBuffer(data, datalen);
 445                 }
 446         }
 447
 448         return 0;
 449 }
 450
 451 int EMVSelectApplication(struct tlvdb *tlv, uint8_t *AID, size_t *AIDlen) {
 452         // check priority. 0x00 - highest
 453         int prio = 0xffff;
 454
 455         *AIDlen = 0;
 456
 457         struct tlvdb *ttmp = tlvdb_find(tlv, 0x6f);
 458         if (!ttmp)
 459                 return 1;
 460
 461         while (ttmp) {
 462                 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x84, NULL);
 463                 const struct tlv *tgPrio = tlvdb_get_inchild(ttmp, 0x87, NULL);
 464
 465                 if (!tgAID)
 466                         break;
 467
 468                 if (tgPrio) {
 469                         int pt = bytes_to_num((uint8_t*)tgPrio->value, (tgPrio->len < 2) ? tgPrio->len : 2);
 470                         if (pt < prio) {
 471                                 prio = pt;
 472
 473                                 memcpy(AID, tgAID->value, tgAID->len);
 474                                 *AIDlen = tgAID->len;
 475                         }
 476                 } else {
 477                         // takes the first application from list wo priority
 478                         if (!*AIDlen) {
 479                         memcpy(AID, tgAID->value, tgAID->len);
 480                         *AIDlen = tgAID->len;
 481                         }
 482                 }
 483
 484                 ttmp = tlvdb_find_next(ttmp, 0x6f);
 485         }
 486
 487         return 0;
 488 }
 489
 490 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) {
 491         return EMVExchange(channel, LeaveFieldON, (sAPDU){0x80, 0xa8, 0x00, 0x00, PDOLLen, PDOL}, Result, MaxResultLen, ResultLen, sw, tlv);
 492 }
 493
 494 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) {
 495         int res = EMVExchange(channel, LeaveFieldON, (sAPDU){0x00, 0xb2, SFIrec, (SFI << 3) | 0x04, 0, NULL}, Result, MaxResultLen, ResultLen, sw, tlv);
 496         if (*sw == 0x6700) {
 497                 PrintAndLogEx(INFO, ">>> trying to reissue command withouth Le...");
 498                 res = EMVExchangeEx(channel, false, LeaveFieldON, (sAPDU){0x00, 0xb2, SFIrec, (SFI << 3) | 0x04, 0, NULL}, false, Result, MaxResultLen, ResultLen, sw, tlv);
 499         }
 500         return res;
 501 }
 502
 503 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) {
 504         return EMVExchange(channel, LeaveFieldON, (sAPDU){0x80, 0xae, RefControl, 0x00, CDOLLen, CDOL}, Result, MaxResultLen, ResultLen, sw, tlv);
 505 }
 506
 507 int EMVGenerateChallenge(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
 508         int res = EMVExchange(channel, LeaveFieldON, (sAPDU){0x00, 0x84, 0x00, 0x00, 0x00, NULL}, Result, MaxResultLen, ResultLen, sw, tlv);
 509         if (*sw == 0x6700) {
 510                 PrintAndLogEx(INFO, ">>> trying to reissue command withouth Le...");
 511                 res = EMVExchangeEx(channel, false, LeaveFieldON, (sAPDU){0x00, 0x84, 0x00, 0x00, 0x00, NULL}, false, Result, MaxResultLen, ResultLen, sw, tlv);
 512         }
 513         return res;
 514 }
 515
 516 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) {
 517         return EMVExchange(channel, LeaveFieldON, (sAPDU){0x00, 0x88, 0x00, 0x00, DDOLLen, DDOL}, Result, MaxResultLen, ResultLen, sw, tlv);
 518 }
 519
 520 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) {
 521         return EMVExchange(channel, LeaveFieldON, (sAPDU){0x80, 0x2a, 0x8e, 0x80, UDOLlen, UDOL}, Result, MaxResultLen, ResultLen, sw, tlv);
 522 }
 523
 524 // Authentication
 525 static struct emv_pk *get_ca_pk(struct tlvdb *db) {
 526         const struct tlv *df_tlv = tlvdb_get(db, 0x84, NULL);
 527         const struct tlv *caidx_tlv = tlvdb_get(db, 0x8f, NULL);
 528
 529         if (!df_tlv || !caidx_tlv || df_tlv->len < 6 || caidx_tlv->len != 1)
 530                 return NULL;
 531
 532         PrintAndLogEx(NORMAL, "CA public key index 0x%0x", caidx_tlv->value[0]);
 533         return emv_pk_get_ca_pk(df_tlv->value, caidx_tlv->value[0]);
 534 }
 535
 536 int trSDA(struct tlvdb *tlv) {
 537
 538         struct emv_pk *pk = get_ca_pk(tlv);
 539         if (!pk) {
 540                 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
 541                 return 2;
 542         }
 543
 544         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
 545         if (!issuer_pk) {
 546                 emv_pk_free(pk);
 547                 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
 548                 return 2;
 549         }
 550
 551         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx",
 552                 issuer_pk->rid[0],
 553                 issuer_pk->rid[1],
 554                 issuer_pk->rid[2],
 555                 issuer_pk->rid[3],
 556                 issuer_pk->rid[4],
 557                 issuer_pk->index,
 558                 issuer_pk->serial[0],
 559                 issuer_pk->serial[1],
 560                 issuer_pk->serial[2]
 561                 );
 562
 563         const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
 564         if (!sda_tlv || sda_tlv->len < 1) {
 565                 emv_pk_free(issuer_pk);
 566                 emv_pk_free(pk);
 567                 PrintAndLogEx(WARNING, "Can't find input list for Offline Data Authentication. Exit.");
 568                 return 3;
 569         }
 570
 571         struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
 572         if (dac_db) {
 573                 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
 574                 PrintAndLogEx(NORMAL, "SDA verified OK. (%02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]);
 575                 tlvdb_add(tlv, dac_db);
 576         } else {
 577                 emv_pk_free(issuer_pk);
 578                 emv_pk_free(pk);
 579                 PrintAndLogEx(WARNING, "SSAD verify error");
 580                 return 4;
 581         }
 582
 583         emv_pk_free(issuer_pk);
 584         emv_pk_free(pk);
 585         return 0;
 586 }
 587
 588 static const unsigned char default_ddol_value[] = {0x9f, 0x37, 0x04};
 589 static struct tlv default_ddol_tlv = {.tag = 0x9f49, .len = 3, .value = default_ddol_value };
 590
 591 int trDDA(EMVCommandChannel channel, bool decodeTLV, struct tlvdb *tlv) {
 592         uint8_t buf[APDU_RES_LEN] = {0};
 593         size_t len = 0;
 594         uint16_t sw = 0;
 595
 596         struct emv_pk *pk = get_ca_pk(tlv);
 597         if (!pk) {
 598                 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
 599                 return 2;
 600         }
 601
 602         const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
 603         if (!sda_tlv || sda_tlv->len < 1) {
 604                 emv_pk_free(pk);
 605                 PrintAndLogEx(WARNING, "Error: Can't find input list for Offline Data Authentication. Exit.");
 606                 return 3;
 607         }
 608
 609         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
 610         if (!issuer_pk) {
 611                 emv_pk_free(pk);
 612                 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
 613                 return 2;
 614         }
 615         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 616                         issuer_pk->rid[0],
 617                         issuer_pk->rid[1],
 618                         issuer_pk->rid[2],
 619                         issuer_pk->rid[3],
 620                         issuer_pk->rid[4],
 621                         issuer_pk->index,
 622                         issuer_pk->serial[0],
 623                         issuer_pk->serial[1],
 624                         issuer_pk->serial[2]
 625                         );
 626
 627         struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
 628         if (!icc_pk) {
 629                 emv_pk_free(pk);
 630                 emv_pk_free(issuer_pk);
 631                 PrintAndLogEx(WARNING, "Error: ICC setrificate not found. Exit.");
 632                 return 2;
 633         }
 634         PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 635                         icc_pk->rid[0],
 636                         icc_pk->rid[1],
 637                         icc_pk->rid[2],
 638                         icc_pk->rid[3],
 639                         icc_pk->rid[4],
 640                         icc_pk->index,
 641                         icc_pk->serial[0],
 642                         icc_pk->serial[1],
 643                         icc_pk->serial[2]
 644                         );
 645
 646         struct emv_pk *icc_pe_pk = emv_pki_recover_icc_pe_cert(issuer_pk, tlv);
 647         if (!icc_pe_pk) {
 648                 PrintAndLogEx(WARNING, "WARNING: ICC PE PK recover error. ");
 649         } else {
 650                 PrintAndLogEx(SUCCESS, "ICC PE PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 651                                 icc_pe_pk->rid[0],
 652                                 icc_pe_pk->rid[1],
 653                                 icc_pe_pk->rid[2],
 654                                 icc_pe_pk->rid[3],
 655                                 icc_pe_pk->rid[4],
 656                                 icc_pe_pk->index,
 657                                 icc_pe_pk->serial[0],
 658                                 icc_pe_pk->serial[1],
 659                                 icc_pe_pk->serial[2]
 660                                 );
 661         }
 662
 663         // 9F4B: Signed Dynamic Application Data
 664         const struct tlv *sdad_tlv = tlvdb_get(tlv, 0x9f4b, NULL);
 665         // DDA with internal authenticate OR fDDA with filled 0x9F4B tag (GPO result)
 666         // EMV kernel3 v2.4, contactless book C-3, C.1., page 147
 667         if (sdad_tlv) {
 668                 PrintAndLogEx(NORMAL, "\n* * Got Signed Dynamic Application Data (9F4B) form GPO. Maybe fDDA...");
 669
 670                 const struct tlvdb *atc_db = emv_pki_recover_atc_ex(icc_pk, tlv, true);
 671                 if (!atc_db) {
 672                         PrintAndLogEx(WARNING, "Error: Can't recover IDN (ICC Dynamic Number)");
 673                         emv_pk_free(pk);
 674                         emv_pk_free(issuer_pk);
 675                         emv_pk_free(icc_pk);
 676                         return 8;
 677                 }
 678
 679                 // 9f36 Application Transaction Counter (ATC)
 680                 const struct tlv *atc_tlv = tlvdb_get(atc_db, 0x9f36, NULL);
 681                 if(atc_tlv) {
 682                         PrintAndLogEx(NORMAL, "\nATC (Application Transaction Counter) [%zu] %s", atc_tlv->len, sprint_hex_inrow(atc_tlv->value, atc_tlv->len));
 683
 684                         const struct tlv *core_atc_tlv = tlvdb_get(tlv, 0x9f36, NULL);
 685                         if(tlv_equal(core_atc_tlv, atc_tlv)) {
 686                                 PrintAndLogEx(SUCCESS, "ATC check OK.");
 687                                 PrintAndLogEx(SUCCESS, "fDDA (fast DDA) verified OK.");
 688                         } else {
 689                                 PrintAndLogEx(WARNING, "Error: fDDA verified, but ATC in the certificate and ATC in the record not the same.");
 690                         }
 691                 } else {
 692                         PrintAndLogEx(NORMAL, "\nERROR: fDDA (fast DDA) verify error");
 693                         emv_pk_free(pk);
 694                         emv_pk_free(issuer_pk);
 695                         emv_pk_free(icc_pk);
 696                         return 9;
 697                 }
 698         } else {
 699                 struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
 700                 if (dac_db) {
 701                         const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
 702                         PrintAndLogEx(NORMAL, "SDA verified OK. (%02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]);
 703                         tlvdb_add(tlv, dac_db);
 704                 } else {
 705                         PrintAndLogEx(WARNING, "Error: SSAD verify error");
 706                         emv_pk_free(pk);
 707                         emv_pk_free(issuer_pk);
 708                         emv_pk_free(icc_pk);
 709                         return 4;
 710                 }
 711
 712                 PrintAndLogEx(NORMAL, "\n* Calc DDOL");
 713                 const struct tlv *ddol_tlv = tlvdb_get(tlv, 0x9f49, NULL);
 714                 if (!ddol_tlv) {
 715                         ddol_tlv = &default_ddol_tlv;
 716                         PrintAndLogEx(NORMAL, "DDOL [9f49] not found. Using default DDOL");
 717                 }
 718
 719                 struct tlv *ddol_data_tlv = dol_process(ddol_tlv, tlv, 0);
 720                 if (!ddol_data_tlv) {
 721                         PrintAndLogEx(WARNING, "Error: Can't create DDOL TLV");
 722                         emv_pk_free(pk);
 723                         emv_pk_free(issuer_pk);
 724                         emv_pk_free(icc_pk);
 725                         return 5;
 726                 }
 727
 728                 PrintAndLogEx(NORMAL, "DDOL data[%d]: %s", ddol_data_tlv->len, sprint_hex(ddol_data_tlv->value, ddol_data_tlv->len));
 729
 730                 PrintAndLogEx(NORMAL, "\n* Internal Authenticate");
 731                 int res = EMVInternalAuthenticate(channel, true, (uint8_t *)ddol_data_tlv->value, ddol_data_tlv->len, buf, sizeof(buf), &len, &sw, NULL);
 732                 if (res) {
 733                         PrintAndLogEx(WARNING, "Internal Authenticate error(%d): %4x. Exit...", res, sw);
 734                         free(ddol_data_tlv);
 735                         emv_pk_free(pk);
 736                         emv_pk_free(issuer_pk);
 737                         emv_pk_free(icc_pk);
 738                         return 6;
 739                 }
 740
 741                 struct tlvdb *dda_db = NULL;
 742                 if (buf[0] == 0x80) {
 743                         if (len < 3 ) {
 744                                 PrintAndLogEx(WARNING, "Error: Internal Authenticate format1 parsing error. length=%d", len);
 745                         } else {
 746                                 // 9f4b Signed Dynamic Application Data
 747                                 dda_db = tlvdb_fixed(0x9f4b, len - 2, buf + 2);
 748                                 tlvdb_add(tlv, dda_db);
 749                                 if (decodeTLV){
 750                                         PrintAndLogEx(NORMAL, "* * Decode response format 1:");
 751                                         TLVPrintFromTLV(dda_db);
 752                                 }
 753                         }
 754                 } else {
 755                         dda_db = tlvdb_parse_multi(buf, len);
 756                         if(!dda_db) {
 757                                 PrintAndLogEx(WARNING, "Error: Can't parse Internal Authenticate result as TLV");
 758                                 free(ddol_data_tlv);
 759                                 emv_pk_free(pk);
 760                                 emv_pk_free(issuer_pk);
 761                                 emv_pk_free(icc_pk);
 762                                 return 7;
 763                         }
 764                         tlvdb_add(tlv, dda_db);
 765
 766                         if (decodeTLV)
 767                                 TLVPrintFromTLV(dda_db);
 768                 }
 769
 770                 struct tlvdb *idn_db = emv_pki_recover_idn_ex(icc_pk, dda_db, ddol_data_tlv, true);
 771                 free(ddol_data_tlv);
 772                 if (!idn_db) {
 773                         PrintAndLogEx(WARNING, "Error: Can't recover IDN (ICC Dynamic Number)");
 774                         tlvdb_free(dda_db);
 775                         emv_pk_free(pk);
 776                         emv_pk_free(issuer_pk);
 777                         emv_pk_free(icc_pk);
 778                         return 8;
 779                 }
 780                 tlvdb_free(dda_db);
 781
 782                 // 9f4c ICC Dynamic Number
 783                 const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL);
 784                 if(idn_tlv) {
 785                         PrintAndLogEx(NORMAL, "\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len));
 786                         PrintAndLogEx(NORMAL, "DDA verified OK.");
 787                         tlvdb_add(tlv, idn_db);
 788                         tlvdb_free(idn_db);
 789                 } else {
 790                         PrintAndLogEx(NORMAL, "\nERROR: DDA verify error");
 791                         tlvdb_free(idn_db);
 792
 793                         emv_pk_free(pk);
 794                         emv_pk_free(issuer_pk);
 795                         emv_pk_free(icc_pk);
 796                         return 9;
 797                 }
 798         }
 799
 800         emv_pk_free(pk);
 801         emv_pk_free(issuer_pk);
 802         emv_pk_free(icc_pk);
 803         return 0;
 804 }
 805
 806 int trCDA(struct tlvdb *tlv, struct tlvdb *ac_tlv, struct tlv *pdol_data_tlv, struct tlv *ac_data_tlv) {
 807
 808         struct emv_pk *pk = get_ca_pk(tlv);
 809         if (!pk) {
 810                 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
 811                 return 2;
 812         }
 813
 814         const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
 815         if (!sda_tlv || sda_tlv->len < 1) {
 816                 PrintAndLogEx(WARNING, "Error: Can't find input list for Offline Data Authentication. Exit.");
 817                 emv_pk_free(pk);
 818                 return 3;
 819         }
 820
 821         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
 822         if (!issuer_pk) {
 823                 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
 824                 emv_pk_free(pk);
 825                 return 2;
 826         }
 827         PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 828                         issuer_pk->rid[0],
 829                         issuer_pk->rid[1],
 830                         issuer_pk->rid[2],
 831                         issuer_pk->rid[3],
 832                         issuer_pk->rid[4],
 833                         issuer_pk->index,
 834                         issuer_pk->serial[0],
 835                         issuer_pk->serial[1],
 836                         issuer_pk->serial[2]
 837                         );
 838
 839         struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
 840         if (!icc_pk) {
 841                 PrintAndLogEx(WARNING, "Error: ICC setrificate not found. Exit.");
 842                 emv_pk_free(pk);
 843                 emv_pk_free(issuer_pk);
 844                 return 2;
 845         }
 846         PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 847                         icc_pk->rid[0],
 848                         icc_pk->rid[1],
 849                         icc_pk->rid[2],
 850                         icc_pk->rid[3],
 851                         icc_pk->rid[4],
 852                         icc_pk->index,
 853                         icc_pk->serial[0],
 854                         icc_pk->serial[1],
 855                         icc_pk->serial[2]
 856                         );
 857
 858         struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
 859         if (dac_db) {
 860                 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
 861                 PrintAndLogEx(NORMAL, "SSAD verified OK. (%02hhx:%02hhx)", dac_tlv->value[0], dac_tlv->value[1]);
 862                 tlvdb_add(tlv, dac_db);
 863         } else {
 864                 PrintAndLogEx(WARNING, "Error: SSAD verify error");
 865                 emv_pk_free(pk);
 866                 emv_pk_free(issuer_pk);
 867                 emv_pk_free(icc_pk);
 868                 return 4;
 869         }
 870
 871         PrintAndLogEx(NORMAL, "\n* * Check Signed Dynamic Application Data (SDAD)");
 872         struct tlvdb *idn_db = emv_pki_perform_cda_ex(icc_pk, tlv, ac_tlv,
 873                         pdol_data_tlv, // pdol
 874                         ac_data_tlv,   // cdol1
 875                         NULL,          // cdol2
 876                         true);
 877         if (idn_db) {
 878                 const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL);
 879                 PrintAndLogEx(NORMAL, "\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len));
 880                 PrintAndLogEx(NORMAL, "CDA verified OK.");
 881                 tlvdb_add(tlv, idn_db);
 882         } else {
 883                 PrintAndLogEx(NORMAL, "\nERROR: CDA verify error");
 884         }
 885
 886         emv_pk_free(pk);
 887         emv_pk_free(issuer_pk);
 888         emv_pk_free(icc_pk);
 889         return 0;
 890 }
 891
 892 int RecoveryCertificates(struct tlvdb *tlvRoot, json_t *root) {
 893
 894         struct emv_pk *pk = get_ca_pk(tlvRoot);
 895         if (!pk) {
 896                 PrintAndLog("ERROR: Key not found. Exit.");
 897                 return 1;
 898         }
 899
 900         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlvRoot);
 901         if (!issuer_pk) {
 902                 emv_pk_free(pk);
 903                 PrintAndLog("WARNING: Issuer certificate not found. Exit.");
 904                 return 2;
 905         }
 906         PrintAndLog("Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx",
 907                         issuer_pk->rid[0],
 908                         issuer_pk->rid[1],
 909                         issuer_pk->rid[2],
 910                         issuer_pk->rid[3],
 911                         issuer_pk->rid[4],
 912                         issuer_pk->index,
 913                         issuer_pk->serial[0],
 914                         issuer_pk->serial[1],
 915                         issuer_pk->serial[2]
 916                         );
 917
 918         JsonSaveBufAsHex(root, "$.ApplicationData.RID", issuer_pk->rid, 5);
 919
 920         char *issuer_pk_c = emv_pk_dump_pk(issuer_pk);
 921         JsonSaveStr(root, "$.ApplicationData.IssuerPublicKeyDec", issuer_pk_c);
 922         JsonSaveBufAsHex(root, "$.ApplicationData.IssuerPublicKeyModulus", issuer_pk->modulus, issuer_pk->mlen);
 923         free(issuer_pk_c);
 924
 925         struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlvRoot, NULL);
 926         if (!icc_pk) {
 927                 emv_pk_free(pk);
 928                 emv_pk_free(issuer_pk);
 929                 PrintAndLog("WARNING: ICC certificate not found. Exit.");
 930                 return 2;
 931         }
 932         printf("ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 933                         icc_pk->rid[0],
 934                         icc_pk->rid[1],
 935                         icc_pk->rid[2],
 936                         icc_pk->rid[3],
 937                         icc_pk->rid[4],
 938                         icc_pk->index,
 939                         icc_pk->serial[0],
 940                         icc_pk->serial[1],
 941                         icc_pk->serial[2]
 942                         );
 943
 944         char *icc_pk_c = emv_pk_dump_pk(icc_pk);
 945         JsonSaveStr(root, "$.ApplicationData.ICCPublicKeyDec", icc_pk_c);
 946         JsonSaveBufAsHex(root, "$.ApplicationData.ICCPublicKeyModulus", icc_pk->modulus, icc_pk->mlen);
 947         free(issuer_pk_c);
 948
 949         return 0;
 950 }