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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
13 #include <string.h>
14 #include "emvjson.h"
15 #include "util_posix.h"
16 #include "protocols.h"
17 #include "ui.h"
18 #include "util.h"
19 #include "emv_tags.h"
20 #include "emv_pk.h"
21 #include "emv_pki.h"
22 #include "cmdhf14a.h"
23 #include "apduinfo.h"
24 #include "tlv.h"
25 #include "dump.h"
26 #include "dol.h"
27
28 #ifdef WITH_SMARTCARD
29 #include "cmdsmartcard.h"
30 #endif
31
32
33 // Got from here. Thanks)
34 // https://eftlab.co.uk/index.php/site-map/knowledge-base/211-emv-aid-rid-pix
35 static const char *PSElist [] = {
36 "325041592E5359532E4444463031", // 2PAY.SYS.DDF01 - Visa Proximity Payment System Environment - PPSE
37 "315041592E5359532E4444463031" // 1PAY.SYS.DDF01 - Visa Payment System Environment - PSE
38 };
39 //static const size_t PSElistLen = sizeof(PSElist)/sizeof(char*);
40
41 char *TransactionTypeStr[] = {
42 "MSD",
43 "VSDC",
44 "qVCDCMCHIP",
45 "CDA"
46 };
47
48 typedef struct {
49 enum CardPSVendor vendor;
50 const char* aid;
51 } TAIDList;
52
53 static const TAIDList AIDlist [] = {
54 // Visa International
55 { CV_VISA, "A00000000305076010"}, // VISA ELO Credit
56 { CV_VISA, "A0000000031010" }, // VISA Debit/Credit (Classic)
57 { CV_VISA, "A000000003101001" }, // VISA Credit
58 { CV_VISA, "A000000003101002" }, // VISA Debit
59 { CV_VISA, "A0000000032010" }, // VISA Electron
60 { CV_VISA, "A0000000032020" }, // VISA
61 { CV_VISA, "A0000000033010" }, // VISA Interlink
62 { CV_VISA, "A0000000034010" }, // VISA Specific
63 { CV_VISA, "A0000000035010" }, // VISA Specific
64 { CV_VISA, "A0000000036010" }, // Domestic Visa Cash Stored Value
65 { CV_VISA, "A0000000036020" }, // International Visa Cash Stored Value
66 { CV_VISA, "A0000000038002" }, // VISA Auth, VisaRemAuthen EMV-CAP (DPA)
67 { CV_VISA, "A0000000038010" }, // VISA Plus
68 { CV_VISA, "A0000000039010" }, // VISA Loyalty
69 { CV_VISA, "A000000003999910" }, // VISA Proprietary ATM
70 // Visa USA
71 { CV_VISA, "A000000098" }, // Debit Card
72 { CV_VISA, "A0000000980848" }, // Debit Card
73 // Mastercard International
74 { CV_MASTERCARD, "A00000000401" }, // MasterCard PayPass
75 { CV_MASTERCARD, "A0000000041010" }, // MasterCard Credit
76 { CV_MASTERCARD, "A00000000410101213" }, // MasterCard Credit
77 { CV_MASTERCARD, "A00000000410101215" }, // MasterCard Credit
78 { CV_MASTERCARD, "A0000000042010" }, // MasterCard Specific
79 { CV_MASTERCARD, "A0000000043010" }, // MasterCard Specific
80 { CV_MASTERCARD, "A0000000043060" }, // Maestro (Debit)
81 { CV_MASTERCARD, "A000000004306001" }, // Maestro (Debit)
82 { CV_MASTERCARD, "A0000000044010" }, // MasterCard Specific
83 { CV_MASTERCARD, "A0000000045010" }, // MasterCard Specific
84 { CV_MASTERCARD, "A0000000046000" }, // Cirrus
85 { CV_MASTERCARD, "A0000000048002" }, // SecureCode Auth EMV-CAP
86 { CV_MASTERCARD, "A0000000049999" }, // MasterCard PayPass
87 { CV_MASTERCARD, "B012345678" }, // Maestro TEST Used for development
88 // American Express
89 { CV_AMERICANEXPRESS, "A000000025" },
90 { CV_AMERICANEXPRESS, "A0000000250000" },
91 { CV_AMERICANEXPRESS, "A00000002501" },
92 { CV_AMERICANEXPRESS, "A000000025010402" },
93 { CV_AMERICANEXPRESS, "A000000025010701" },
94 { CV_AMERICANEXPRESS, "A000000025010801" },
95 // Groupement des Cartes Bancaires "CB"
96 { CV_CB, "A0000000421010" }, // Cartes Bancaire EMV Card
97 { CV_CB, "A0000000422010" },
98 { CV_CB, "A0000000423010" },
99 { CV_CB, "A0000000424010" },
100 { CV_CB, "A0000000425010" },
101 // JCB CO., LTD.
102 { CV_JCB, "A00000006510" }, // JCB
103 { CV_JCB, "A0000000651010" }, // JCB J Smart Credit
104 // Switch Card Services Ltd.
105 { CV_SWITCH, "A0000000050001" }, // Maestro UK
106 { CV_SWITCH, "A0000000050002" }, // Solo
107 // Diners Club International Ltd.
108 { CV_DINERS, "A0000001523010" }, // Discover, Pulse D Pas Discover Card
109 { CV_DINERS, "A0000001524010" }, // Discover, Discover Debit Common Card
110 // Other
111 { CV_OTHER, "A00000002401" }, // Midland Bank Plc - Self Service
112 { CV_OTHER, "A0000000291010" }, // LINK Interchange Network Ltd - Link / American Express
113 { CV_OTHER, "A00000006900" }, // Société Européenne de Monnaie Electronique SEME - Moneo
114 { CV_OTHER, "A000000077010000021000000000003B" }, // Oberthur Technologies France - Visa AEPN
115 { CV_OTHER, "A0000001211010" }, // PBS Danmark A/S - Denmark - Dankort (VISA GEM Vision) - Danish domestic debit card
116 { CV_OTHER, "A0000001410001" }, // Associazione Bancaria Italiana - Italy - PagoBANCOMAT - CoGeBan Consorzio BANCOMAT (Italian domestic debit card)
117 { CV_OTHER, "A0000001544442" }, // Banricompras Debito - Banrisul - Banco do Estado do Rio Grande do SUL - S.A.
118 { CV_OTHER, "A000000172950001" }, // Financial Information Service Co. Ltd. - Taiwan - BAROC Financial Application Taiwan- The Bankers Association of the Republic of China
119 { CV_OTHER, "A0000001850002" }, // Post Office Limited - United Kingdom - UK Post Office Account card
120 { CV_OTHER, "A0000002281010" }, // Saudi Arabian Monetary Agency (SAMA) - Kingdom of Saudi Arabia - SPAN (M/Chip) - SPAN2 (Saudi Payments Network) - Saudi Arabia domestic credit/debit card (Saudi Arabia Monetary Agency)
121 { CV_OTHER, "A0000002282010" }, // Saudi Arabian Monetary Agency (SAMA) - Kingdom of Saudi Arabia - SPAN (VIS) - SPAN2 (Saudi Payments Network) - Saudi Arabia domestic credit/debit card (Saudi Arabia Monetary Agency)
122 { CV_OTHER, "A0000002771010" }, // Interac Association - Canada - INTERAC - Canadian domestic credit/debit card
123 { CV_OTHER, "A00000031510100528" }, // Currence Holding/PIN BV - The Netherlands- Currence PuC
124 { CV_OTHER, "A0000003156020" }, // Currence Holding/PIN BV - The Netherlands - Chipknip
125 { CV_OTHER, "A0000003591010028001" }, // Euro Alliance of Payment Schemes s.c.r.l. (EAPS) - Belgium - Girocard EAPS - ZKA (Germany)
126 { CV_OTHER, "A0000003710001" }, // Verve - Nigeria - InterSwitch Verve Card - Nigerian local switch company
127 { CV_OTHER, "A0000004540010" }, // eTranzact - Nigeria - Etranzact Genesis Card - Nigerian local switch company
128 { CV_OTHER, "A0000004540011" }, // eTranzact - Nigeria - Etranzact Genesis Card 2 - Nigerian local switch company
129 { CV_OTHER, "A0000004766C" }, // Google - United States - GOOGLE_PAYMENT_AID
130 { CV_OTHER, "A0000005241010" }, // RuPay - India - RuPay - RuPay (India)
131 { CV_OTHER, "A0000006723010" }, // TROY - Turkey - TROY chip credit card - Turkey's Payment Method
132 { CV_OTHER, "A0000006723020" }, // TROY - Turkey - TROY chip debit card - Turkey's Payment Method
133 { CV_OTHER, "A0000007705850" }, // Indian Oil Corporation Limited - India - XTRAPOWER Fleet Card Program - Indian Oil’s Pre Paid Program
134 { CV_OTHER, "D27600002545500100" }, // ZKA - Germany - Girocard - ZKA Girocard (Geldkarte) (Germany)
135 { CV_OTHER, "D5280050218002" }, // The Netherlands - ? - (Netherlands)
136 { CV_OTHER, "D5780000021010" }, // Bankaxept Norway Bankaxept Norwegian domestic debit card
137 { CV_OTHER, "F0000000030001" }, // BRADESCO - Brazilian Bank Banco Bradesco
138 };
139 static const size_t AIDlistLen = sizeof(AIDlist)/sizeof(TAIDList);
140
141 static bool APDULogging = false;
142 void SetAPDULogging(bool logging) {
143 APDULogging = logging;
144 }
145
146 void DropFieldEx(EMVCommandChannel channel) {
147 if (channel == ECC_CONTACTLESS) {
148 DropField();
149 }
150 }
151
152 enum CardPSVendor GetCardPSVendor(uint8_t * AID, size_t AIDlen) {
153 char buf[100] = {0};
154 if (AIDlen < 1)
155 return CV_NA;
156
157 hex_to_buffer((uint8_t *)buf, AID, AIDlen, sizeof(buf) - 1, 0, 0, true);
158
159 for(int i = 0; i < AIDlistLen; i ++) {
160 if (strncmp(AIDlist[i].aid, buf, strlen(AIDlist[i].aid)) == 0){
161 return AIDlist[i].vendor;
162 }
163 }
164
165 return CV_NA;
166 }
167
168 static bool print_cb(void *data, const struct tlv *tlv, int level, bool is_leaf) {
169 emv_tag_dump(tlv, stdout, level);
170 if (is_leaf) {
171 dump_buffer(tlv->value, tlv->len, stdout, level);
172 }
173
174 return true;
175 }
176
177 bool TLVPrintFromBuffer(uint8_t *data, int datalen) {
178 struct tlvdb *t = NULL;
179 t = tlvdb_parse_multi(data, datalen);
180 if (t) {
181 PrintAndLogEx(NORMAL, "-------------------- TLV decoded --------------------");
182
183 tlvdb_visit(t, print_cb, NULL, 0);
184 tlvdb_free(t);
185 return true;
186 } else {
187 PrintAndLogEx(WARNING, "TLV ERROR: Can't parse response as TLV tree.");
188 }
189 return false;
190 }
191
192 void TLVPrintFromTLVLev(struct tlvdb *tlv, int level) {
193 if (!tlv)
194 return;
195
196 tlvdb_visit(tlv, print_cb, NULL, level);
197 }
198
199 void TLVPrintFromTLV(struct tlvdb *tlv) {
200 TLVPrintFromTLVLev(tlv, 0);
201 }
202
203 void TLVPrintAIDlistFromSelectTLV(struct tlvdb *tlv) {
204 PrintAndLogEx(NORMAL, "|------------------|--------|-------------------------|");
205 PrintAndLogEx(NORMAL, "| AID |Priority| Name |");
206 PrintAndLogEx(NORMAL, "|------------------|--------|-------------------------|");
207
208 struct tlvdb *ttmp = tlvdb_find(tlv, 0x6f);
209 if (!ttmp)
210 PrintAndLogEx(NORMAL, "| none |");
211
212 while (ttmp) {
213 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x84, NULL);
214 const struct tlv *tgName = tlvdb_get_inchild(ttmp, 0x50, NULL);
215 const struct tlv *tgPrio = tlvdb_get_inchild(ttmp, 0x87, NULL);
216 if (!tgAID)
217 break;
218 PrintAndLogEx(NORMAL, "|%s| %s |%s|",
219 sprint_hex_inrow_ex(tgAID->value, tgAID->len, 18),
220 (tgPrio) ? sprint_hex(tgPrio->value, 1) : " ",
221 (tgName) ? sprint_ascii_ex(tgName->value, tgName->len, 25) : " ");
222
223 ttmp = tlvdb_find_next(ttmp, 0x6f);
224 }
225
226 PrintAndLogEx(NORMAL, "|------------------|--------|-------------------------|");
227 }
228
229 struct tlvdb *GetPANFromTrack2(const struct tlv *track2) {
230 char track2Hex[200] = {0};
231 uint8_t PAN[100] = {0};
232 int PANlen = 0;
233 char *tmp = track2Hex;
234
235 if (!track2)
236 return NULL;
237
238 for (int i = 0; i < track2->len; ++i, tmp += 2)
239 sprintf(tmp, "%02x", (unsigned int)track2->value[i]);
240
241 int posD = strchr(track2Hex, 'd') - track2Hex;
242 if (posD < 1)
243 return NULL;
244
245 track2Hex[posD] = 0;
246 if (strlen(track2Hex) % 2) {
247 track2Hex[posD] = 'F';
248 track2Hex[posD + 1] = '\0';
249 }
250
251 param_gethex_to_eol(track2Hex, 0, PAN, sizeof(PAN), &PANlen);
252
253 return tlvdb_fixed(0x5a, PANlen, PAN);
254 }
255
256 struct tlvdb *GetdCVVRawFromTrack2(const struct tlv *track2) {
257 char track2Hex[200] = {0};
258 char dCVVHex[100] = {0};
259 uint8_t dCVV[100] = {0};
260 int dCVVlen = 0;
261 const int PINlen = 5; // must calculated from 9F67 MSD Offset but i have not seen this tag)
262 char *tmp = track2Hex;
263
264 if (!track2)
265 return NULL;
266
267 for (int i = 0; i < track2->len; ++i, tmp += 2)
268 sprintf(tmp, "%02x", (unsigned int)track2->value[i]);
269
270 int posD = strchr(track2Hex, 'd') - track2Hex;
271 if (posD < 1)
272 return NULL;
273
274 memset(dCVVHex, '0', 32);
275 // ATC
276 memcpy(dCVVHex + 0, track2Hex + posD + PINlen + 11, 4);
277 // PAN 5 hex
278 memcpy(dCVVHex + 4, track2Hex, 5);
279 // expire date
280 memcpy(dCVVHex + 9, track2Hex + posD + 1, 4);
281 // service code
282 memcpy(dCVVHex + 13, track2Hex + posD + 5, 3);
283
284 param_gethex_to_eol(dCVVHex, 0, dCVV, sizeof(dCVV), &dCVVlen);
285
286 return tlvdb_fixed(0x02, dCVVlen, dCVV);
287 }
288
289
290 int EMVExchangeEx(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t *apdu, int apdu_len, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
291 {
292 *ResultLen = 0;
293 if (sw) *sw = 0;
294 uint16_t isw = 0;
295 int res = 0;
296
297 if (ActivateField) {
298 DropFieldEx( channel );
299 msleep(50);
300 }
301
302 if (APDULogging)
303 PrintAndLogEx(SUCCESS, ">>>> %s", sprint_hex(apdu, apdu_len));
304
305 #ifdef WITH_SMARTCARD
306 switch(channel) {
307 case ECC_CONTACTLESS:
308 // 6 byes + data = INS + CLA + P1 + P2 + Lc + <data = Nc> + Le(?IncludeLe)
309 res = ExchangeAPDU14a(apdu, apdu_len, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
310 break;
311 case ECC_CONTACT:
312 res = ExchangeAPDUSC(apdu, apdu_len, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
313 break;
314 }
315 #else
316 res = ExchangeAPDU14a(apdu, apdu_len, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
317 #endif
318
319 if (res) {
320 return res;
321 }
322
323 if (APDULogging)
324 PrintAndLogEx(SUCCESS, "<<<< %s", sprint_hex(Result, *ResultLen));
325
326 if (*ResultLen < 2) {
327 return 200;
328 }
329
330 if (Result[*ResultLen-2] == 0x61) {
331 uint8_t La = Result[*ResultLen-1];
332 uint8_t get_response[5] = {apdu[0], ISO7816_GET_RESPONSE, 0x00, 0x00, La};
333 size_t oldlen = *ResultLen;
334 res = EMVExchangeEx(channel, false, LeaveFieldON, get_response, sizeof(get_response), &Result[oldlen-2], MaxResultLen-oldlen+2, ResultLen, sw, tlv);
335 *ResultLen += oldlen;
336 }
337
338 if (res) return res;
339
340 *ResultLen -= 2;
341
342 isw = Result[*ResultLen] * 0x0100 + Result[*ResultLen + 1];
343 if (sw)
344 *sw = isw;
345
346 if (isw != 0x9000) {
347 if (APDULogging) {
348 PrintAndLogEx(ERR, "APDU(%02x%02x) ERROR: [%4X] %s", apdu[0], apdu[1], isw, GetAPDUCodeDescription(*sw >> 8, *sw & 0xff));
349 return 5;
350 }
351 }
352
353 // add to tlv tree
354 if (tlv) {
355 struct tlvdb *t = tlvdb_parse_multi(Result, *ResultLen);
356 tlvdb_add(tlv, t);
357 }
358
359 return 0;
360 }
361
362 static int EMVExchange(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *apdu, int apdu_len, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
363 {
364 uint8_t APDU[APDU_COMMAND_LEN];
365 memcpy(APDU, apdu, apdu_len);
366 APDU[apdu_len] = 0x00;
367 if (channel == ECC_CONTACTLESS) {
368 if (apdu_len == 5) {
369 // there is no Lc but an Le already
370 } else if (apdu_len > 5 && apdu_len == 5 + apdu[4] + 1) {
371 // there is Lc, data and Le
372 } else {
373 apdu_len++; // no Le, add Le = 0x00 because some vendors require it for contactless
374 }
375 }
376 return EMVExchangeEx(channel, false, LeaveFieldON, APDU, apdu_len, Result, MaxResultLen, ResultLen, sw, tlv);
377 }
378
379 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)
380 {
381 uint8_t Select_APDU[APDU_COMMAND_LEN] = {0x00, ISO7816_SELECT_FILE, 0x04, 0x00, AIDLen, 0x00};
382 memcpy(Select_APDU + 5, AID, AIDLen);
383 int apdulen = 5 + AIDLen;
384 if (channel == ECC_CONTACTLESS) {
385 apdulen++; // some vendors require Le = 0x00 for contactless operations
386 }
387 return EMVExchangeEx(channel, ActivateField, LeaveFieldON, Select_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
388 }
389
390 int EMVSelectPSE(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t PSENum, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw) {
391 uint8_t buf[APDU_DATA_LEN] = {0};
392 *ResultLen = 0;
393 int len = 0;
394 int res = 0;
395 switch (PSENum) {
396 case 1:
397 param_gethex_to_eol(PSElist[1], 0, buf, sizeof(buf), &len);
398 break;
399 case 2:
400
401 param_gethex_to_eol(PSElist[0], 0, buf, sizeof(buf), &len);
402 break;
403 default:
404 return -1;
405 }
406
407 // select
408 res = EMVSelect(channel, ActivateField, LeaveFieldON, buf, len, Result, MaxResultLen, ResultLen, sw, NULL);
409
410 return res;
411 }
412
413
414 int EMVSelectWithRetry(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) {
415 int retrycnt = 0;
416 int res = 0;
417 do {
418 res = EMVSelect(channel, false, true, AID, AIDLen, Result, MaxResultLen, ResultLen, sw, tlv);
419
420 // retry if error and not returned sw error
421 if (res && res != 5) {
422 if (++retrycnt < 3){
423 continue;
424 } else {
425 // card select error, proxmark error
426 if (res == 1) {
427 PrintAndLogEx(WARNING, "Exit...");
428 return 1;
429 }
430
431 retrycnt = 0;
432 PrintAndLogEx(NORMAL, "Retry failed [%s]. Skiped...", sprint_hex_inrow(AID, AIDLen));
433 return res;
434 }
435 }
436 } while (res && res != 5);
437
438 return res;
439 }
440
441
442 int EMVCheckAID(EMVCommandChannel channel, bool decodeTLV, struct tlvdb *tlvdbelm, struct tlvdb *tlv){
443 uint8_t data[APDU_RESPONSE_LEN] = {0};
444 size_t datalen = 0;
445 int res = 0;
446 uint16_t sw = 0;
447
448 while (tlvdbelm) {
449 const struct tlv *tgAID = tlvdb_get_inchild(tlvdbelm, 0x4f, NULL);
450 if (tgAID) {
451 res = EMVSelectWithRetry(channel, false, true, (uint8_t *)tgAID->value, tgAID->len, data, sizeof(data), &datalen, &sw, tlv);
452
453 // if returned sw error
454 if (res == 5) {
455 // next element
456 tlvdbelm = tlvdb_find_next(tlvdbelm, 0x61);
457 continue;
458 }
459
460 if (res)
461 break;
462
463 // all is ok
464 if (decodeTLV){
465 PrintAndLogEx(NORMAL, "%s:", sprint_hex_inrow(tgAID->value, tgAID->len));
466 TLVPrintFromBuffer(data, datalen);
467 }
468 }
469 tlvdbelm = tlvdb_find_next(tlvdbelm, 0x61);
470 }
471 return res;
472 }
473
474
475 int EMVSearchPSE(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t PSENum, bool decodeTLV, struct tlvdb *tlv) {
476 uint8_t data[APDU_RESPONSE_LEN] = {0};
477 size_t datalen = 0;
478 uint8_t sfidata[0x11][APDU_RESPONSE_LEN] = {0};
479 size_t sfidatalen[0x11] = {0};
480 uint16_t sw = 0;
481 int res;
482 bool fileFound = false;
483
484 char *PSE_or_PPSE = PSENum == 1 ? "PSE" : "PPSE";
485
486 // select PPSE
487 res = EMVSelectPSE(channel, ActivateField, true, PSENum, data, sizeof(data), &datalen, &sw);
488
489 if (!res){
490 if (sw != 0x9000) {
491 PrintAndLogEx(FAILED, "Select PSE error. APDU error: %04x.", sw);
492 return 1;
493 }
494
495 struct tlvdb *t = NULL;
496 t = tlvdb_parse_multi(data, datalen);
497 if (t) {
498 // PSE/PPSE with SFI
499 struct tlvdb *tsfi = tlvdb_find_path(t, (tlv_tag_t[]){0x6f, 0xa5, 0x88, 0x00});
500 if (tsfi) {
501 uint8_t sfin = 0;
502 tlv_get_uint8(tlvdb_get_tlv(tsfi), &sfin);
503 PrintAndLogEx(INFO, "* PPSE get SFI: 0x%02x.", sfin);
504
505 for (uint8_t ui = 0x01; ui <= 0x10; ui++) {
506 PrintAndLogEx(INFO, "* * Get SFI: 0x%02x. num: 0x%02x", sfin, ui);
507 res = EMVReadRecord(channel, true, sfin, ui, sfidata[ui], APDU_RESPONSE_LEN, &sfidatalen[ui], &sw, NULL);
508
509 // end of records
510 if (sw == 0x6a83) {
511 sfidatalen[ui] = 0;
512 PrintAndLogEx(INFO, "* * PPSE get SFI. End of records.");
513 break;
514 }
515
516 // error catch!
517 if (sw != 0x9000) {
518 sfidatalen[ui] = 0;
519 PrintAndLogEx(FAILED, "PPSE get Error. APDU error: %04x.", sw);
520 break;
521 }
522
523 if (decodeTLV){
524 TLVPrintFromBuffer(sfidata[ui], sfidatalen[ui]);
525 }
526 }
527
528 for (uint8_t ui = 0x01; ui <= 0x10; ui++) {
529 if (sfidatalen[ui]) {
530 struct tlvdb *tsfi = NULL;
531 tsfi = tlvdb_parse_multi(sfidata[ui], sfidatalen[ui]);
532 if (tsfi) {
533 struct tlvdb *tsfitmp = tlvdb_find_path(tsfi, (tlv_tag_t[]){0x70, 0x61, 0x00});
534 if (!tsfitmp) {
535 PrintAndLogEx(FAILED, "SFI 0x%02d doesn't have any records.", sfidatalen[ui]);
536 continue;
537 }
538 res = EMVCheckAID(channel, decodeTLV, tsfitmp, tlv);
539 fileFound = true;
540 }
541 tlvdb_free(tsfi);
542 }
543 }
544 }
545
546
547 // PSE/PPSE plain (wo SFI)
548 struct tlvdb *ttmp = tlvdb_find_path(t, (tlv_tag_t[]){0x6f, 0xa5, 0xbf0c, 0x61, 0x00});
549 if (ttmp) {
550 res = EMVCheckAID(channel, decodeTLV, ttmp, tlv);
551 fileFound = true;
552 }
553
554 if (!fileFound)
555 PrintAndLogEx(FAILED, "PPSE doesn't have any records.");
556
557 tlvdb_free(t);
558 } else {
559 PrintAndLogEx(WARNING, "%s ERROR: Can't get TLV from response.", PSE_or_PPSE);
560 }
561 } else {
562 PrintAndLogEx(WARNING, "%s ERROR: Can't select PPSE AID. Error: %d", PSE_or_PPSE, res);
563 }
564
565 if (!LeaveFieldON)
566 DropFieldEx( channel );
567
568 return res;
569 }
570
571 int EMVSearch(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvdb *tlv) {
572 uint8_t aidbuf[APDU_DATA_LEN] = {0};
573 int aidlen = 0;
574 uint8_t data[APDU_RESPONSE_LEN] = {0};
575 size_t datalen = 0;
576 uint16_t sw = 0;
577
578 int res = 0;
579 int retrycnt = 0;
580 for(int i = 0; i < AIDlistLen; i ++) {
581 param_gethex_to_eol(AIDlist[i].aid, 0, aidbuf, sizeof(aidbuf), &aidlen);
582 res = EMVSelect(channel, (i == 0) ? ActivateField : false, true, aidbuf, aidlen, data, sizeof(data), &datalen, &sw, tlv);
583 // retry if error and not returned sw error
584 if (res && res != 5) {
585 if (++retrycnt < 3){
586 i--;
587 } else {
588 // (1) - card select error, (4) reply timeout, (200) - result length = 0
589 if (res == 1 || res == 4 || res == 200) {
590 if (!LeaveFieldON)
591 DropFieldEx(channel);
592 PrintAndLogEx(WARNING, "Exit...");
593 return 1;
594 }
595
596 retrycnt = 0;
597 PrintAndLogEx(FAILED, "Retry failed [%s]. Skipped...", AIDlist[i].aid);
598 }
599 continue;
600 }
601 retrycnt = 0;
602
603 if (res)
604 continue;
605
606 if (!datalen)
607 continue;
608
609 if (decodeTLV) {
610 PrintAndLogEx(SUCCESS, "%s", AIDlist[i].aid);
611 TLVPrintFromBuffer(data, datalen);
612 }
613 }
614
615 if (!LeaveFieldON)
616 DropFieldEx(channel);
617
618 return 0;
619 }
620
621 int EMVSelectApplication(struct tlvdb *tlv, uint8_t *AID, size_t *AIDlen) {
622 // check priority. 0x00 - highest
623 int prio = 0xffff;
624
625 *AIDlen = 0;
626
627 struct tlvdb *ttmp = tlvdb_find(tlv, 0x6f);
628 if (!ttmp)
629 return 1;
630
631 while (ttmp) {
632 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x84, NULL);
633 const struct tlv *tgPrio = tlvdb_get_inchild(ttmp, 0x87, NULL);
634
635 if (!tgAID)
636 break;
637
638 if (tgPrio) {
639 int pt = bytes_to_num((uint8_t*)tgPrio->value, (tgPrio->len < 2) ? tgPrio->len : 2);
640 if (pt < prio) {
641 prio = pt;
642
643 memcpy(AID, tgAID->value, tgAID->len);
644 *AIDlen = tgAID->len;
645 }
646 } else {
647 // takes the first application from list wo priority
648 if (!*AIDlen) {
649 memcpy(AID, tgAID->value, tgAID->len);
650 *AIDlen = tgAID->len;
651 }
652 }
653
654 ttmp = tlvdb_find_next(ttmp, 0x6f);
655 }
656
657 return 0;
658 }
659
660 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)
661 {
662 uint8_t GPO_APDU[APDU_COMMAND_LEN] = {0x80, ISO7816_GET_PROCESSING_OPTIONS, 0x00, 0x00, PDOLLen, 0x00};
663 memcpy(GPO_APDU + 5, PDOL, PDOLLen);
664 int apdulen = 5 + PDOLLen;
665
666 return EMVExchange(channel, LeaveFieldON, GPO_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
667 }
668
669 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)
670 {
671 uint8_t read_APDU[5] = {0x00, ISO7816_READ_RECORDS, SFIrec, (SFI << 3) | 0x04, 0x00};
672 int res = EMVExchange(channel, LeaveFieldON, read_APDU, sizeof(read_APDU), Result, MaxResultLen, ResultLen, sw, tlv);
673 if (*sw == 0x6700) {
674 PrintAndLogEx(INFO, ">>> trying to reissue command withouth Le...");
675 res = EMVExchangeEx(channel, false, LeaveFieldON, read_APDU, sizeof(read_APDU), Result, MaxResultLen, ResultLen, sw, tlv);
676 }
677 return res;
678 }
679
680 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)
681 {
682 uint8_t CDOL_APDU[APDU_COMMAND_LEN] = {0x80, 0xae, RefControl, 0x00, CDOLLen, 0x00};
683 memcpy(CDOL_APDU + 5, CDOL, CDOLLen);
684 int apdulen = 5 + CDOLLen;
685
686 return EMVExchange(channel, LeaveFieldON, CDOL_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
687 }
688
689 int EMVGenerateChallenge(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
690 {
691 uint8_t get_challenge_APDU[APDU_COMMAND_LEN] = {0x00, ISO7816_GET_CHALLENGE, 0x00, 0x00};
692
693 int res = EMVExchange(channel, LeaveFieldON, get_challenge_APDU, 4, Result, MaxResultLen, ResultLen, sw, tlv);
694 if (*sw == 0x6700) {
695 PrintAndLogEx(INFO, ">>> trying to reissue command withouth Le...");
696 res = EMVExchangeEx(channel, false, LeaveFieldON, get_challenge_APDU, 4, Result, MaxResultLen, ResultLen, sw, tlv);
697 }
698 return res;
699 }
700
701 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)
702 {
703 uint8_t authenticate_APDU[APDU_COMMAND_LEN] = {0x00, ISO7816_INTERNAL_AUTHENTICATE, 0x00, 0x00, DDOLLen, 0x00};
704 memcpy(authenticate_APDU + 5, DDOL, DDOLLen);
705 int apdulen = 5 + DDOLLen;
706
707 return EMVExchange(channel, LeaveFieldON, authenticate_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
708 }
709
710 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)
711 {
712 uint8_t checksum_APDU[APDU_COMMAND_LEN] = {0x80, 0x2a, 0x8e, 0x80, UDOLlen, 0x00};
713 memcpy(checksum_APDU + 5, UDOL, UDOLlen);
714 int apdulen = 5 + UDOLlen;
715
716 return EMVExchange(channel, LeaveFieldON, checksum_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
717 }
718
719 // Authentication
720 struct emv_pk *get_ca_pk(struct tlvdb *db) {
721 const struct tlv *df_tlv = tlvdb_get(db, 0x84, NULL);
722 const struct tlv *caidx_tlv = tlvdb_get(db, 0x8f, NULL);
723
724 if (!df_tlv || !caidx_tlv || df_tlv->len < 6 || caidx_tlv->len != 1)
725 return NULL;
726
727 PrintAndLogEx(NORMAL, "CA Public Key index 0x%0x", caidx_tlv->value[0]);
728 return emv_pk_get_ca_pk(df_tlv->value, caidx_tlv->value[0]);
729 }
730
731 int trSDA(struct tlvdb *tlv) {
732
733 struct emv_pk *pk = get_ca_pk(tlv);
734 if (!pk) {
735 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
736 return 2;
737 }
738
739 struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
740 if (!issuer_pk) {
741 emv_pk_free(pk);
742 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
743 return 2;
744 }
745
746 PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx",
747 issuer_pk->rid[0],
748 issuer_pk->rid[1],
749 issuer_pk->rid[2],
750 issuer_pk->rid[3],
751 issuer_pk->rid[4],
752 issuer_pk->index,
753 issuer_pk->serial[0],
754 issuer_pk->serial[1],
755 issuer_pk->serial[2]
756 );
757
758 const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
759 if (!sda_tlv || sda_tlv->len < 1) {
760 emv_pk_free(issuer_pk);
761 emv_pk_free(pk);
762 PrintAndLogEx(WARNING, "Can't find input list for Offline Data Authentication. Exit.");
763 return 3;
764 }
765
766 struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
767 if (dac_db) {
768 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
769 PrintAndLogEx(NORMAL, "SDA verified OK. (Data Authentication Code: %02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]);
770 tlvdb_add(tlv, dac_db);
771 } else {
772 emv_pk_free(issuer_pk);
773 emv_pk_free(pk);
774 PrintAndLogEx(WARNING, "SSAD verify error");
775 return 4;
776 }
777
778 emv_pk_free(issuer_pk);
779 emv_pk_free(pk);
780 return 0;
781 }
782
783 static const unsigned char default_ddol_value[] = {0x9f, 0x37, 0x04};
784 static struct tlv default_ddol_tlv = {.tag = 0x9f49, .len = 3, .value = default_ddol_value };
785
786 int trDDA(EMVCommandChannel channel, bool decodeTLV, struct tlvdb *tlv) {
787 uint8_t buf[APDU_RESPONSE_LEN] = {0};
788 size_t len = 0;
789 uint16_t sw = 0;
790
791 struct emv_pk *pk = get_ca_pk(tlv);
792 if (!pk) {
793 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
794 return 2;
795 }
796
797 const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
798 /* if (!sda_tlv || sda_tlv->len < 1) { it may be 0!!!!
799 emv_pk_free(pk);
800 PrintAndLogEx(WARNING, "Error: Can't find input list for Offline Data Authentication. Exit.");
801 return 3;
802 }
803 */
804 struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
805 if (!issuer_pk) {
806 emv_pk_free(pk);
807 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
808 return 2;
809 }
810 PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
811 issuer_pk->rid[0],
812 issuer_pk->rid[1],
813 issuer_pk->rid[2],
814 issuer_pk->rid[3],
815 issuer_pk->rid[4],
816 issuer_pk->index,
817 issuer_pk->serial[0],
818 issuer_pk->serial[1],
819 issuer_pk->serial[2]
820 );
821
822 struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
823 if (!icc_pk) {
824 emv_pk_free(pk);
825 emv_pk_free(issuer_pk);
826 PrintAndLogEx(WARNING, "Error: ICC certificate not found. Exit.");
827 return 2;
828 }
829 PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
830 icc_pk->rid[0],
831 icc_pk->rid[1],
832 icc_pk->rid[2],
833 icc_pk->rid[3],
834 icc_pk->rid[4],
835 icc_pk->index,
836 icc_pk->serial[0],
837 icc_pk->serial[1],
838 icc_pk->serial[2]
839 );
840
841 if (tlvdb_get(tlv, 0x9f2d, NULL)) {
842 struct emv_pk *icc_pe_pk = emv_pki_recover_icc_pe_cert(issuer_pk, tlv);
843 if (!icc_pe_pk) {
844 PrintAndLogEx(WARNING, "WARNING: ICC PE PK recover error. ");
845 } else {
846 PrintAndLogEx(SUCCESS, "ICC PE PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
847 icc_pe_pk->rid[0],
848 icc_pe_pk->rid[1],
849 icc_pe_pk->rid[2],
850 icc_pe_pk->rid[3],
851 icc_pe_pk->rid[4],
852 icc_pe_pk->index,
853 icc_pe_pk->serial[0],
854 icc_pe_pk->serial[1],
855 icc_pe_pk->serial[2]
856 );
857 }
858 } else {
859 PrintAndLogEx(INFO, "ICC PE PK (PIN Encipherment Public Key Certificate) not found.\n");
860 }
861
862 // 9F4B: Signed Dynamic Application Data
863 const struct tlv *sdad_tlv = tlvdb_get(tlv, 0x9f4b, NULL);
864 // DDA with internal authenticate OR fDDA with filled 0x9F4B tag (GPO result)
865 // EMV kernel3 v2.4, contactless book C-3, C.1., page 147
866 if (sdad_tlv) {
867 PrintAndLogEx(NORMAL, "\n* * Got Signed Dynamic Application Data (9F4B) form GPO. Maybe fDDA...");
868
869 const struct tlvdb *atc_db = emv_pki_recover_atc_ex(icc_pk, tlv, true);
870 if (!atc_db) {
871 PrintAndLogEx(WARNING, "Error: Can't recover IDN (ICC Dynamic Number)");
872 emv_pk_free(pk);
873 emv_pk_free(issuer_pk);
874 emv_pk_free(icc_pk);
875 return 8;
876 }
877
878 // 9f36 Application Transaction Counter (ATC)
879 const struct tlv *atc_tlv = tlvdb_get(atc_db, 0x9f36, NULL);
880 if(atc_tlv) {
881 PrintAndLogEx(NORMAL, "\nATC (Application Transaction Counter) [%zu] %s", atc_tlv->len, sprint_hex_inrow(atc_tlv->value, atc_tlv->len));
882
883 const struct tlv *core_atc_tlv = tlvdb_get(tlv, 0x9f36, NULL);
884 if(tlv_equal(core_atc_tlv, atc_tlv)) {
885 PrintAndLogEx(SUCCESS, "ATC check OK.");
886 PrintAndLogEx(SUCCESS, "fDDA (fast DDA) verified OK.");
887 } else {
888 PrintAndLogEx(WARNING, "Error: fDDA verified, but ATC in the certificate and ATC in the record not the same.");
889 }
890 } else {
891 PrintAndLogEx(NORMAL, "\nERROR: fDDA (fast DDA) verify error");
892 emv_pk_free(pk);
893 emv_pk_free(issuer_pk);
894 emv_pk_free(icc_pk);
895 return 9;
896 }
897 } else {
898 struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
899 if (dac_db) {
900 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
901 PrintAndLogEx(NORMAL, "SDAD verified OK. (Data Authentication Code: %02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]);
902 tlvdb_add(tlv, dac_db);
903 } else {
904 PrintAndLogEx(WARNING, "Error: SSAD verify error");
905 emv_pk_free(pk);
906 emv_pk_free(issuer_pk);
907 emv_pk_free(icc_pk);
908 return 4;
909 }
910
911 PrintAndLogEx(NORMAL, "\n* Calc DDOL");
912 const struct tlv *ddol_tlv = tlvdb_get(tlv, 0x9f49, NULL);
913 if (!ddol_tlv) {
914 ddol_tlv = &default_ddol_tlv;
915 PrintAndLogEx(NORMAL, "DDOL [9f49] not found. Using default DDOL");
916 }
917
918 struct tlv *ddol_data_tlv = dol_process(ddol_tlv, tlv, 0);
919 if (!ddol_data_tlv) {
920 PrintAndLogEx(WARNING, "Error: Can't create DDOL TLV");
921 emv_pk_free(pk);
922 emv_pk_free(issuer_pk);
923 emv_pk_free(icc_pk);
924 return 5;
925 }
926
927 PrintAndLogEx(NORMAL, "DDOL data[%d]: %s", ddol_data_tlv->len, sprint_hex(ddol_data_tlv->value, ddol_data_tlv->len));
928
929 PrintAndLogEx(NORMAL, "\n* Internal Authenticate");
930 int res = EMVInternalAuthenticate(channel, true, (uint8_t *)ddol_data_tlv->value, ddol_data_tlv->len, buf, sizeof(buf), &len, &sw, NULL);
931 if (res) {
932 PrintAndLogEx(WARNING, "Internal Authenticate error(%d): %4x. Exit...", res, sw);
933 free(ddol_data_tlv);
934 emv_pk_free(pk);
935 emv_pk_free(issuer_pk);
936 emv_pk_free(icc_pk);
937 return 6;
938 }
939
940 struct tlvdb *dda_db = NULL;
941 if (buf[0] == 0x80) {
942 if (len < 3 ) {
943 PrintAndLogEx(WARNING, "Error: Internal Authenticate format1 parsing error. length=%d", len);
944 } else {
945 // parse response 0x80
946 struct tlvdb *t80 = tlvdb_parse_multi(buf, len);
947 const struct tlv * t80tlv = tlvdb_get_tlv(t80);
948
949 // 9f4b Signed Dynamic Application Data
950 dda_db = tlvdb_fixed(0x9f4b, t80tlv->len, t80tlv->value);
951 tlvdb_add(tlv, dda_db);
952
953 tlvdb_free(t80);
954
955 if (decodeTLV){
956 PrintAndLogEx(NORMAL, "* * Decode response format 1:");
957 TLVPrintFromTLV(dda_db);
958 }
959 }
960 } else {
961 dda_db = tlvdb_parse_multi(buf, len);
962 if(!dda_db) {
963 PrintAndLogEx(WARNING, "Error: Can't parse Internal Authenticate result as TLV");
964 free(ddol_data_tlv);
965 emv_pk_free(pk);
966 emv_pk_free(issuer_pk);
967 emv_pk_free(icc_pk);
968 return 7;
969 }
970 tlvdb_add(tlv, dda_db);
971
972 if (decodeTLV)
973 TLVPrintFromTLV(dda_db);
974 }
975
976 struct tlvdb *idn_db = emv_pki_recover_idn_ex(icc_pk, dda_db, ddol_data_tlv, true);
977 free(ddol_data_tlv);
978 if (!idn_db) {
979 PrintAndLogEx(WARNING, "Error: Can't recover IDN (ICC Dynamic Number)");
980 tlvdb_free(dda_db);
981 emv_pk_free(pk);
982 emv_pk_free(issuer_pk);
983 emv_pk_free(icc_pk);
984 return 8;
985 }
986 tlvdb_free(dda_db);
987
988 // 9f4c ICC Dynamic Number
989 const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL);
990 if(idn_tlv) {
991 PrintAndLogEx(NORMAL, "\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len));
992 PrintAndLogEx(NORMAL, "DDA verified OK.");
993 tlvdb_add(tlv, idn_db);
994 tlvdb_free(idn_db);
995 } else {
996 PrintAndLogEx(NORMAL, "\nERROR: DDA verify error");
997 tlvdb_free(idn_db);
998
999 emv_pk_free(pk);
1000 emv_pk_free(issuer_pk);
1001 emv_pk_free(icc_pk);
1002 return 9;
1003 }
1004 }
1005
1006 emv_pk_free(pk);
1007 emv_pk_free(issuer_pk);
1008 emv_pk_free(icc_pk);
1009 return 0;
1010 }
1011
1012 int trCDA(struct tlvdb *tlv, struct tlvdb *ac_tlv, struct tlv *pdol_data_tlv, struct tlv *ac_data_tlv) {
1013
1014 struct emv_pk *pk = get_ca_pk(tlv);
1015 if (!pk) {
1016 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
1017 return 2;
1018 }
1019
1020 const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
1021 if (!sda_tlv || sda_tlv->len < 1) {
1022 PrintAndLogEx(WARNING, "Error: Can't find input list for Offline Data Authentication. Exit.");
1023 emv_pk_free(pk);
1024 return 3;
1025 }
1026
1027 struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
1028 if (!issuer_pk) {
1029 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
1030 emv_pk_free(pk);
1031 return 2;
1032 }
1033 PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
1034 issuer_pk->rid[0],
1035 issuer_pk->rid[1],
1036 issuer_pk->rid[2],
1037 issuer_pk->rid[3],
1038 issuer_pk->rid[4],
1039 issuer_pk->index,
1040 issuer_pk->serial[0],
1041 issuer_pk->serial[1],
1042 issuer_pk->serial[2]
1043 );
1044
1045 struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
1046 if (!icc_pk) {
1047 PrintAndLogEx(WARNING, "Error: ICC certificate not found. Exit.");
1048 emv_pk_free(pk);
1049 emv_pk_free(issuer_pk);
1050 return 2;
1051 }
1052 PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
1053 icc_pk->rid[0],
1054 icc_pk->rid[1],
1055 icc_pk->rid[2],
1056 icc_pk->rid[3],
1057 icc_pk->rid[4],
1058 icc_pk->index,
1059 icc_pk->serial[0],
1060 icc_pk->serial[1],
1061 icc_pk->serial[2]
1062 );
1063
1064 struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
1065 if (dac_db) {
1066 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
1067 PrintAndLogEx(NORMAL, "SSAD verified OK. (%02hhx:%02hhx)", dac_tlv->value[0], dac_tlv->value[1]);
1068 tlvdb_add(tlv, dac_db);
1069 } else {
1070 PrintAndLogEx(WARNING, "Error: SSAD verify error");
1071 emv_pk_free(pk);
1072 emv_pk_free(issuer_pk);
1073 emv_pk_free(icc_pk);
1074 return 4;
1075 }
1076
1077 PrintAndLogEx(NORMAL, "\n* * Check Signed Dynamic Application Data (SDAD)");
1078 struct tlvdb *idn_db = emv_pki_perform_cda_ex(icc_pk, tlv, ac_tlv,
1079 pdol_data_tlv, // pdol
1080 ac_data_tlv, // cdol1
1081 NULL, // cdol2
1082 true);
1083 if (idn_db) {
1084 const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL);
1085 PrintAndLogEx(NORMAL, "\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len));
1086 PrintAndLogEx(NORMAL, "CDA verified OK.");
1087 tlvdb_add(tlv, idn_db);
1088 } else {
1089 PrintAndLogEx(NORMAL, "\nERROR: CDA verify error");
1090 }
1091
1092 emv_pk_free(pk);
1093 emv_pk_free(issuer_pk);
1094 emv_pk_free(icc_pk);
1095 return 0;
1096 }
1097
1098 int RecoveryCertificates(struct tlvdb *tlvRoot, json_t *root) {
1099
1100 struct emv_pk *pk = get_ca_pk(tlvRoot);
1101 if (!pk) {
1102 PrintAndLog("ERROR: Key not found. Exit.");
1103 return 1;
1104 }
1105
1106 struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlvRoot);
1107 if (!issuer_pk) {
1108 emv_pk_free(pk);
1109 PrintAndLog("WARNING: Issuer certificate not found. Exit.");
1110 return 2;
1111 }
1112 PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx",
1113 issuer_pk->rid[0],
1114 issuer_pk->rid[1],
1115 issuer_pk->rid[2],
1116 issuer_pk->rid[3],
1117 issuer_pk->rid[4],
1118 issuer_pk->index,
1119 issuer_pk->serial[0],
1120 issuer_pk->serial[1],
1121 issuer_pk->serial[2]
1122 );
1123
1124 JsonSaveBufAsHex(root, "$.ApplicationData.RID", issuer_pk->rid, 5);
1125
1126 char *issuer_pk_c = emv_pk_dump_pk(issuer_pk);
1127 JsonSaveStr(root, "$.ApplicationData.IssuerPublicKeyDec", issuer_pk_c);
1128 JsonSaveBufAsHex(root, "$.ApplicationData.IssuerPublicKeyModulus", issuer_pk->modulus, issuer_pk->mlen);
1129 free(issuer_pk_c);
1130
1131 struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlvRoot, NULL);
1132 if (!icc_pk) {
1133 emv_pk_free(pk);
1134 emv_pk_free(issuer_pk);
1135 PrintAndLogEx(WARNING, "WARNING: ICC certificate not found. Exit.");
1136 return 2;
1137 }
1138 PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
1139 icc_pk->rid[0],
1140 icc_pk->rid[1],
1141 icc_pk->rid[2],
1142 icc_pk->rid[3],
1143 icc_pk->rid[4],
1144 icc_pk->index,
1145 icc_pk->serial[0],
1146 icc_pk->serial[1],
1147 icc_pk->serial[2]
1148 );
1149
1150 char *icc_pk_c = emv_pk_dump_pk(icc_pk);
1151 JsonSaveStr(root, "$.ApplicationData.ICCPublicKeyDec", icc_pk_c);
1152 JsonSaveBufAsHex(root, "$.ApplicationData.ICCPublicKeyModulus", icc_pk->modulus, icc_pk->mlen);
1153 free(issuer_pk_c);
1154
1155 return 0;
1156 }
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