cvs.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                 PrintAndLog("-------------------- TLV decoded --------------------");
 131
 132                 tlvdb_visit(t, print_cb, NULL, 0);
 133                 tlvdb_free(t);
 134         } else {
 135                 PrintAndLog("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         PrintAndLog("|------------------|--------|-------------------------|");
 152         PrintAndLog("|    AID           |Priority| Name                    |");
 153         PrintAndLog("|------------------|--------|-------------------------|");
 154
 155         struct tlvdb *ttmp = tlvdb_find(tlv, 0x6f);
 156         if (!ttmp)
 157                 PrintAndLog("|                         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                 PrintAndLog("|%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         PrintAndLog("|------------------|--------|-------------------------|");
 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                 PrintAndLog(">>>> %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                 PrintAndLog("<<<< %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                                 PrintAndLog("APDU chaining len:%02x -->", *sw & 0xff);
 292                         } else {
 293                                 PrintAndLog("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, true, 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}, true, 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                                 PrintAndLog("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                                                                 PrintAndLog("Exit...");
 369                                                                 return 1;
 370                                                         }
 371
 372                                                         retrycnt = 0;
 373                                                         PrintAndLog("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                                                 PrintAndLog("%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                         PrintAndLog("PPSE ERROR: Can't get TLV from response.");
 395                 }
 396         } else {
 397                 PrintAndLog("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                                 PrintAndLog("Retry failed [%s]. Skiped...", AIDlist[i].aid);
 431                         }
 432                         continue;
 433                 }
 434                 retrycnt = 0;
 435
 436                 if (res)
 437                         continue;
 438
 439                 if (decodeTLV){
 440                         PrintAndLog("%s:", AIDlist[i].aid);
 441                         TLVPrintFromBuffer(data, datalen);
 442                 }
 443         }
 444
 445         return 0;
 446 }
 447
 448 int EMVSelectApplication(struct tlvdb *tlv, uint8_t *AID, size_t *AIDlen) {
 449         // check priority. 0x00 - highest
 450         int prio = 0xffff;
 451
 452         *AIDlen = 0;
 453
 454         struct tlvdb *ttmp = tlvdb_find(tlv, 0x6f);
 455         if (!ttmp)
 456                 return 1;
 457
 458         while (ttmp) {
 459                 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x84, NULL);
 460                 const struct tlv *tgPrio = tlvdb_get_inchild(ttmp, 0x87, NULL);
 461
 462                 if (!tgAID)
 463                         break;
 464
 465                 if (tgPrio) {
 466                         int pt = bytes_to_num((uint8_t*)tgPrio->value, (tgPrio->len < 2) ? tgPrio->len : 2);
 467                         if (pt < prio) {
 468                                 prio = pt;
 469
 470                                 memcpy(AID, tgAID->value, tgAID->len);
 471                                 *AIDlen = tgAID->len;
 472                         }
 473                 } else {
 474                         // takes the first application from list wo priority
 475                         if (!*AIDlen) {
 476                         memcpy(AID, tgAID->value, tgAID->len);
 477                         *AIDlen = tgAID->len;
 478                         }
 479                 }
 480
 481                 ttmp = tlvdb_find_next(ttmp, 0x6f);
 482         }
 483
 484         return 0;
 485 }
 486
 487 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) {
 488         return EMVExchange(channel, LeaveFieldON, (sAPDU){0x80, 0xa8, 0x00, 0x00, PDOLLen, PDOL}, Result, MaxResultLen, ResultLen, sw, tlv);
 489 }
 490
 491 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) {
 492         int res = EMVExchange(channel, LeaveFieldON, (sAPDU){0x00, 0xb2, SFIrec, (SFI << 3) | 0x04, 0, NULL}, Result, MaxResultLen, ResultLen, sw, tlv);
 493         if (*sw == 0x6700) {
 494                 PrintAndLogEx(INFO, ">>> trying to reissue command withouth Le...");
 495                 res = EMVExchangeEx(channel, false, LeaveFieldON, (sAPDU){0x00, 0xb2, SFIrec, (SFI << 3) | 0x04, 0, NULL}, false, Result, MaxResultLen, ResultLen, sw, tlv);
 496         }
 497         return res;
 498 }
 499
 500 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) {
 501         return EMVExchange(channel, LeaveFieldON, (sAPDU){0x80, 0xae, RefControl, 0x00, CDOLLen, CDOL}, Result, MaxResultLen, ResultLen, sw, tlv);
 502 }
 503
 504 int EMVGenerateChallenge(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
 505         int res = EMVExchange(channel, LeaveFieldON, (sAPDU){0x00, 0x84, 0x00, 0x00, 0x00, NULL}, Result, MaxResultLen, ResultLen, sw, tlv);
 506         if (*sw == 0x6700) {
 507                 PrintAndLogEx(INFO, ">>> trying to reissue command withouth Le...");
 508                 res = EMVExchangeEx(channel, false, LeaveFieldON, (sAPDU){0x00, 0x84, 0x00, 0x00, 0x00, NULL}, false, Result, MaxResultLen, ResultLen, sw, tlv);
 509         }
 510         return res;
 511 }
 512
 513 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) {
 514         return EMVExchange(channel, LeaveFieldON, (sAPDU){0x00, 0x88, 0x00, 0x00, DDOLLen, DDOL}, Result, MaxResultLen, ResultLen, sw, tlv);
 515 }
 516
 517 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) {
 518         return EMVExchange(channel, LeaveFieldON, (sAPDU){0x80, 0x2a, 0x8e, 0x80, UDOLlen, UDOL}, Result, MaxResultLen, ResultLen, sw, tlv);
 519 }
 520
 521 // Authentication
 522 static struct emv_pk *get_ca_pk(struct tlvdb *db) {
 523         const struct tlv *df_tlv = tlvdb_get(db, 0x84, NULL);
 524         const struct tlv *caidx_tlv = tlvdb_get(db, 0x8f, NULL);
 525
 526         if (!df_tlv || !caidx_tlv || df_tlv->len < 6 || caidx_tlv->len != 1)
 527                 return NULL;
 528
 529         PrintAndLog("CA public key index 0x%0x", caidx_tlv->value[0]);
 530         return emv_pk_get_ca_pk(df_tlv->value, caidx_tlv->value[0]);
 531 }
 532
 533 int trSDA(struct tlvdb *tlv) {
 534
 535         struct emv_pk *pk = get_ca_pk(tlv);
 536         if (!pk) {
 537                 PrintAndLog("ERROR: Key not found. Exit.");
 538                 return 2;
 539         }
 540
 541         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
 542         if (!issuer_pk) {
 543                 emv_pk_free(pk);
 544                 PrintAndLog("ERROR: Issuer certificate not found. Exit.");
 545                 return 2;
 546         }
 547
 548         PrintAndLog("Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx",
 549                 issuer_pk->rid[0],
 550                 issuer_pk->rid[1],
 551                 issuer_pk->rid[2],
 552                 issuer_pk->rid[3],
 553                 issuer_pk->rid[4],
 554                 issuer_pk->index,
 555                 issuer_pk->serial[0],
 556                 issuer_pk->serial[1],
 557                 issuer_pk->serial[2]
 558                 );
 559
 560         const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
 561         if (!sda_tlv || sda_tlv->len < 1) {
 562                 emv_pk_free(issuer_pk);
 563                 emv_pk_free(pk);
 564                 PrintAndLog("ERROR: Can't find input list for Offline Data Authentication. Exit.");
 565                 return 3;
 566         }
 567
 568         struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
 569         if (dac_db) {
 570                 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
 571                 PrintAndLog("SDA verified OK. (%02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]);
 572                 tlvdb_add(tlv, dac_db);
 573         } else {
 574                 emv_pk_free(issuer_pk);
 575                 emv_pk_free(pk);
 576                 PrintAndLog("ERROR: SSAD verify error");
 577                 return 4;
 578         }
 579
 580         emv_pk_free(issuer_pk);
 581         emv_pk_free(pk);
 582         return 0;
 583 }
 584
 585 static const unsigned char default_ddol_value[] = {0x9f, 0x37, 0x04};
 586 static struct tlv default_ddol_tlv = {.tag = 0x9f49, .len = 3, .value = default_ddol_value };
 587
 588 int trDDA(EMVCommandChannel channel, bool decodeTLV, struct tlvdb *tlv) {
 589         uint8_t buf[APDU_RES_LEN] = {0};
 590         size_t len = 0;
 591         uint16_t sw = 0;
 592
 593         struct emv_pk *pk = get_ca_pk(tlv);
 594         if (!pk) {
 595                 PrintAndLog("ERROR: Key not found. Exit.");
 596                 return 2;
 597         }
 598
 599         const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
 600         if (!sda_tlv || sda_tlv->len < 1) {
 601                 emv_pk_free(pk);
 602                 PrintAndLog("ERROR: Can't find input list for Offline Data Authentication. Exit.");
 603                 return 3;
 604         }
 605
 606         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
 607         if (!issuer_pk) {
 608                 emv_pk_free(pk);
 609                 PrintAndLog("ERROR: Issuer certificate not found. Exit.");
 610                 return 2;
 611         }
 612         printf("Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 613                         issuer_pk->rid[0],
 614                         issuer_pk->rid[1],
 615                         issuer_pk->rid[2],
 616                         issuer_pk->rid[3],
 617                         issuer_pk->rid[4],
 618                         issuer_pk->index,
 619                         issuer_pk->serial[0],
 620                         issuer_pk->serial[1],
 621                         issuer_pk->serial[2]
 622                         );
 623
 624         struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
 625         if (!icc_pk) {
 626                 emv_pk_free(pk);
 627                 emv_pk_free(issuer_pk);
 628                 PrintAndLog("ERROR: ICC setrificate not found. Exit.");
 629                 return 2;
 630         }
 631         printf("ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 632                         icc_pk->rid[0],
 633                         icc_pk->rid[1],
 634                         icc_pk->rid[2],
 635                         icc_pk->rid[3],
 636                         icc_pk->rid[4],
 637                         icc_pk->index,
 638                         icc_pk->serial[0],
 639                         icc_pk->serial[1],
 640                         icc_pk->serial[2]
 641                         );
 642
 643         struct emv_pk *icc_pe_pk = emv_pki_recover_icc_pe_cert(issuer_pk, tlv);
 644         if (!icc_pe_pk) {
 645                 PrintAndLog("WARNING: ICC PE PK recover error. ");
 646         } else {
 647                 printf("ICC PE PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 648                                 icc_pe_pk->rid[0],
 649                                 icc_pe_pk->rid[1],
 650                                 icc_pe_pk->rid[2],
 651                                 icc_pe_pk->rid[3],
 652                                 icc_pe_pk->rid[4],
 653                                 icc_pe_pk->index,
 654                                 icc_pe_pk->serial[0],
 655                                 icc_pe_pk->serial[1],
 656                                 icc_pe_pk->serial[2]
 657                                 );
 658         }
 659
 660         // 9F4B: Signed Dynamic Application Data
 661         const struct tlv *sdad_tlv = tlvdb_get(tlv, 0x9f4b, NULL);
 662         // DDA with internal authenticate OR fDDA with filled 0x9F4B tag (GPO result)
 663         // EMV kernel3 v2.4, contactless book C-3, C.1., page 147
 664         if (sdad_tlv) {
 665                 PrintAndLog("\n* * Got Signed Dynamic Application Data (9F4B) form GPO. Maybe fDDA...");
 666
 667                 const struct tlvdb *atc_db = emv_pki_recover_atc_ex(icc_pk, tlv, true);
 668                 if (!atc_db) {
 669                         PrintAndLog("ERROR: Can't recover IDN (ICC Dynamic Number)");
 670                         emv_pk_free(pk);
 671                         emv_pk_free(issuer_pk);
 672                         emv_pk_free(icc_pk);
 673                         return 8;
 674                 }
 675
 676                 // 9f36 Application Transaction Counter (ATC)
 677                 const struct tlv *atc_tlv = tlvdb_get(atc_db, 0x9f36, NULL);
 678                 if(atc_tlv) {
 679                         PrintAndLog("\nATC (Application Transaction Counter) [%zu] %s", atc_tlv->len, sprint_hex_inrow(atc_tlv->value, atc_tlv->len));
 680
 681                         const struct tlv *core_atc_tlv = tlvdb_get(tlv, 0x9f36, NULL);
 682                         if(tlv_equal(core_atc_tlv, atc_tlv)) {
 683                                 PrintAndLog("ATC check OK.");
 684                                 PrintAndLog("fDDA (fast DDA) verified OK.");
 685                         } else {
 686                                 PrintAndLog("ERROR: fDDA verified, but ATC in the certificate and ATC in the record not the same.");
 687                         }
 688                 } else {
 689                         PrintAndLog("\nERROR: fDDA (fast DDA) verify error");
 690                         emv_pk_free(pk);
 691                         emv_pk_free(issuer_pk);
 692                         emv_pk_free(icc_pk);
 693                         return 9;
 694                 }
 695         } else {
 696                 struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
 697                 if (dac_db) {
 698                         const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
 699                         printf("SDA verified OK. (%02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]);
 700                         tlvdb_add(tlv, dac_db);
 701                 } else {
 702                         PrintAndLog("ERROR: SSAD verify error");
 703                         emv_pk_free(pk);
 704                         emv_pk_free(issuer_pk);
 705                         emv_pk_free(icc_pk);
 706                         return 4;
 707                 }
 708
 709                 PrintAndLog("\n* Calc DDOL");
 710                 const struct tlv *ddol_tlv = tlvdb_get(tlv, 0x9f49, NULL);
 711                 if (!ddol_tlv) {
 712                         ddol_tlv = &default_ddol_tlv;
 713                         PrintAndLog("DDOL [9f49] not found. Using default DDOL");
 714                 }
 715
 716                 struct tlv *ddol_data_tlv = dol_process(ddol_tlv, tlv, 0);
 717                 if (!ddol_data_tlv) {
 718                         PrintAndLog("ERROR: Can't create DDOL TLV");
 719                         emv_pk_free(pk);
 720                         emv_pk_free(issuer_pk);
 721                         emv_pk_free(icc_pk);
 722                         return 5;
 723                 }
 724
 725                 PrintAndLog("DDOL data[%d]: %s", ddol_data_tlv->len, sprint_hex(ddol_data_tlv->value, ddol_data_tlv->len));
 726
 727                 PrintAndLog("\n* Internal Authenticate");
 728                 int res = EMVInternalAuthenticate(channel, true, (uint8_t *)ddol_data_tlv->value, ddol_data_tlv->len, buf, sizeof(buf), &len, &sw, NULL);
 729                 if (res) {
 730                         PrintAndLogEx(WARNING, "Internal Authenticate error(%d): %4x. Exit...", res, sw);
 731                         free(ddol_data_tlv);
 732                         emv_pk_free(pk);
 733                         emv_pk_free(issuer_pk);
 734                         emv_pk_free(icc_pk);
 735                         return 6;
 736                 }
 737
 738                 struct tlvdb *dda_db = NULL;
 739                 if (buf[0] == 0x80) {
 740                         if (len < 3 ) {
 741                                 PrintAndLog("ERROR: Internal Authenticate format1 parsing error. length=%d", len);
 742                         } else {
 743                                 // 9f4b Signed Dynamic Application Data
 744                                 dda_db = tlvdb_fixed(0x9f4b, len - 2, buf + 2);
 745                                 tlvdb_add(tlv, dda_db);
 746                                 if (decodeTLV){
 747                                         PrintAndLog("* * Decode response format 1:");
 748                                         TLVPrintFromTLV(dda_db);
 749                                 }
 750                         }
 751                 } else {
 752                         dda_db = tlvdb_parse_multi(buf, len);
 753                         if(!dda_db) {
 754                                 PrintAndLog("ERROR: Can't parse Internal Authenticate result as TLV");
 755                                 free(ddol_data_tlv);
 756                                 emv_pk_free(pk);
 757                                 emv_pk_free(issuer_pk);
 758                                 emv_pk_free(icc_pk);
 759                                 return 7;
 760                         }
 761                         tlvdb_add(tlv, dda_db);
 762
 763                         if (decodeTLV)
 764                                 TLVPrintFromTLV(dda_db);
 765                 }
 766
 767                 struct tlvdb *idn_db = emv_pki_recover_idn_ex(icc_pk, dda_db, ddol_data_tlv, true);
 768                 free(ddol_data_tlv);
 769                 if (!idn_db) {
 770                         PrintAndLog("ERROR: Can't recover IDN (ICC Dynamic Number)");
 771                         tlvdb_free(dda_db);
 772                         emv_pk_free(pk);
 773                         emv_pk_free(issuer_pk);
 774                         emv_pk_free(icc_pk);
 775                         return 8;
 776                 }
 777                 tlvdb_free(dda_db);
 778
 779                 // 9f4c ICC Dynamic Number
 780                 const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL);
 781                 if(idn_tlv) {
 782                         PrintAndLog("\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len));
 783                         PrintAndLog("DDA verified OK.");
 784                         tlvdb_add(tlv, idn_db);
 785                         tlvdb_free(idn_db);
 786                 } else {
 787                         PrintAndLog("\nERROR: DDA verify error");
 788                         tlvdb_free(idn_db);
 789
 790                         emv_pk_free(pk);
 791                         emv_pk_free(issuer_pk);
 792                         emv_pk_free(icc_pk);
 793                         return 9;
 794                 }
 795         }
 796
 797         emv_pk_free(pk);
 798         emv_pk_free(issuer_pk);
 799         emv_pk_free(icc_pk);
 800         return 0;
 801 }
 802
 803 int trCDA(struct tlvdb *tlv, struct tlvdb *ac_tlv, struct tlv *pdol_data_tlv, struct tlv *ac_data_tlv) {
 804
 805         struct emv_pk *pk = get_ca_pk(tlv);
 806         if (!pk) {
 807                 PrintAndLog("ERROR: Key not found. Exit.");
 808                 return 2;
 809         }
 810
 811         const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
 812         if (!sda_tlv || sda_tlv->len < 1) {
 813                 PrintAndLog("ERROR: Can't find input list for Offline Data Authentication. Exit.");
 814                 emv_pk_free(pk);
 815                 return 3;
 816         }
 817
 818         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
 819         if (!issuer_pk) {
 820                 PrintAndLog("ERROR: Issuer certificate not found. Exit.");
 821                 emv_pk_free(pk);
 822                 return 2;
 823         }
 824         printf("Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 825                         issuer_pk->rid[0],
 826                         issuer_pk->rid[1],
 827                         issuer_pk->rid[2],
 828                         issuer_pk->rid[3],
 829                         issuer_pk->rid[4],
 830                         issuer_pk->index,
 831                         issuer_pk->serial[0],
 832                         issuer_pk->serial[1],
 833                         issuer_pk->serial[2]
 834                         );
 835
 836         struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
 837         if (!icc_pk) {
 838                 PrintAndLog("ERROR: ICC setrificate not found. Exit.");
 839                 emv_pk_free(pk);
 840                 emv_pk_free(issuer_pk);
 841                 return 2;
 842         }
 843         printf("ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 844                         icc_pk->rid[0],
 845                         icc_pk->rid[1],
 846                         icc_pk->rid[2],
 847                         icc_pk->rid[3],
 848                         icc_pk->rid[4],
 849                         icc_pk->index,
 850                         icc_pk->serial[0],
 851                         icc_pk->serial[1],
 852                         icc_pk->serial[2]
 853                         );
 854
 855         struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
 856         if (dac_db) {
 857                 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
 858                 PrintAndLog("SSAD verified OK. (%02hhx:%02hhx)", dac_tlv->value[0], dac_tlv->value[1]);
 859                 tlvdb_add(tlv, dac_db);
 860         } else {
 861                 PrintAndLog("ERROR: SSAD verify error");
 862                 emv_pk_free(pk);
 863                 emv_pk_free(issuer_pk);
 864                 emv_pk_free(icc_pk);
 865                 return 4;
 866         }
 867
 868         PrintAndLog("\n* * Check Signed Dynamic Application Data (SDAD)");
 869         struct tlvdb *idn_db = emv_pki_perform_cda_ex(icc_pk, tlv, ac_tlv,
 870                         pdol_data_tlv, // pdol
 871                         ac_data_tlv,   // cdol1
 872                         NULL,          // cdol2
 873                         true);
 874         if (idn_db) {
 875                 const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL);
 876                 PrintAndLog("\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len));
 877                 PrintAndLog("CDA verified OK.");
 878                 tlvdb_add(tlv, idn_db);
 879         } else {
 880                 PrintAndLog("\nERROR: CDA verify error");
 881         }
 882
 883         emv_pk_free(pk);
 884         emv_pk_free(issuer_pk);
 885         emv_pk_free(icc_pk);
 886         return 0;
 887 }
 888
 889 int RecoveryCertificates(struct tlvdb *tlvRoot, json_t *root) {
 890
 891         struct emv_pk *pk = get_ca_pk(tlvRoot);
 892         if (!pk) {
 893                 PrintAndLog("ERROR: Key not found. Exit.");
 894                 return 1;
 895         }
 896
 897         struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlvRoot);
 898         if (!issuer_pk) {
 899                 emv_pk_free(pk);
 900                 PrintAndLog("WARNING: Issuer certificate not found. Exit.");
 901                 return 2;
 902         }
 903         PrintAndLog("Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx",
 904                         issuer_pk->rid[0],
 905                         issuer_pk->rid[1],
 906                         issuer_pk->rid[2],
 907                         issuer_pk->rid[3],
 908                         issuer_pk->rid[4],
 909                         issuer_pk->index,
 910                         issuer_pk->serial[0],
 911                         issuer_pk->serial[1],
 912                         issuer_pk->serial[2]
 913                         );
 914
 915         JsonSaveBufAsHex(root, "$.ApplicationData.RID", issuer_pk->rid, 5);
 916
 917         char *issuer_pk_c = emv_pk_dump_pk(issuer_pk);
 918         JsonSaveStr(root, "$.ApplicationData.IssuerPublicKeyDec", issuer_pk_c);
 919         JsonSaveBufAsHex(root, "$.ApplicationData.IssuerPublicKeyModulus", issuer_pk->modulus, issuer_pk->mlen);
 920         free(issuer_pk_c);
 921
 922         struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlvRoot, NULL);
 923         if (!icc_pk) {
 924                 emv_pk_free(pk);
 925                 emv_pk_free(issuer_pk);
 926                 PrintAndLog("WARNING: ICC certificate not found. Exit.");
 927                 return 2;
 928         }
 929         printf("ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
 930                         icc_pk->rid[0],
 931                         icc_pk->rid[1],
 932                         icc_pk->rid[2],
 933                         icc_pk->rid[3],
 934                         icc_pk->rid[4],
 935                         icc_pk->index,
 936                         icc_pk->serial[0],
 937                         icc_pk->serial[1],
 938                         icc_pk->serial[2]
 939                         );
 940
 941         char *icc_pk_c = emv_pk_dump_pk(icc_pk);
 942         JsonSaveStr(root, "$.ApplicationData.ICCPublicKeyDec", icc_pk_c);
 943         JsonSaveBufAsHex(root, "$.ApplicationData.ICCPublicKeyModulus", icc_pk->modulus, icc_pk->mlen);
 944         free(issuer_pk_c);
 945
 946         return 0;
 947 }