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Change copyright to allow GPLV3, for https://github.com/Proxmark/proxmark3/issues/527
[proxmark3-svn] / 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
13 // Got from here. Thanks)
14 // https://eftlab.co.uk/index.php/site-map/knowledge-base/211-emv-aid-rid-pix
15 static const char *PSElist [] = {
16 "325041592E5359532E4444463031", // 2PAY.SYS.DDF01 - Visa Proximity Payment System Environment - PPSE
17 "315041592E5359532E4444463031" // 1PAY.SYS.DDF01 - Visa Payment System Environment - PSE
18 };
19 //static const size_t PSElistLen = sizeof(PSElist)/sizeof(char*);
20
21 typedef struct {
22 enum CardPSVendor vendor;
23 const char* aid;
24 } TAIDList;
25
26 static const TAIDList AIDlist [] = {
27 // Visa International
28 { CV_VISA, "A00000000305076010"}, // VISA ELO Credit
29 { CV_VISA, "A0000000031010" }, // VISA Debit/Credit (Classic)
30 { CV_VISA, "A000000003101001" }, // VISA Credit
31 { CV_VISA, "A000000003101002" }, // VISA Debit
32 { CV_VISA, "A0000000032010" }, // VISA Electron
33 { CV_VISA, "A0000000032020" }, // VISA
34 { CV_VISA, "A0000000033010" }, // VISA Interlink
35 { CV_VISA, "A0000000034010" }, // VISA Specific
36 { CV_VISA, "A0000000035010" }, // VISA Specific
37 { CV_VISA, "A0000000036010" }, // Domestic Visa Cash Stored Value
38 { CV_VISA, "A0000000036020" }, // International Visa Cash Stored Value
39 { CV_VISA, "A0000000038002" }, // VISA Auth, VisaRemAuthen EMV-CAP (DPA)
40 { CV_VISA, "A0000000038010" }, // VISA Plus
41 { CV_VISA, "A0000000039010" }, // VISA Loyalty
42 { CV_VISA, "A000000003999910" }, // VISA Proprietary ATM
43 // Visa USA
44 { CV_VISA, "A000000098" }, // Debit Card
45 { CV_VISA, "A0000000980848" }, // Debit Card
46 // Mastercard International
47 { CV_MASTERCARD, "A00000000401" }, // MasterCard PayPass
48 { CV_MASTERCARD, "A0000000041010" }, // MasterCard Credit
49 { CV_MASTERCARD, "A00000000410101213" }, // MasterCard Credit
50 { CV_MASTERCARD, "A00000000410101215" }, // MasterCard Credit
51 { CV_MASTERCARD, "A0000000042010" }, // MasterCard Specific
52 { CV_MASTERCARD, "A0000000043010" }, // MasterCard Specific
53 { CV_MASTERCARD, "A0000000043060" }, // Maestro (Debit)
54 { CV_MASTERCARD, "A000000004306001" }, // Maestro (Debit)
55 { CV_MASTERCARD, "A0000000044010" }, // MasterCard Specific
56 { CV_MASTERCARD, "A0000000045010" }, // MasterCard Specific
57 { CV_MASTERCARD, "A0000000046000" }, // Cirrus
58 { CV_MASTERCARD, "A0000000048002" }, // SecureCode Auth EMV-CAP
59 { CV_MASTERCARD, "A0000000049999" }, // MasterCard PayPass
60 // American Express
61 { CV_AMERICANEXPRESS, "A000000025" },
62 { CV_AMERICANEXPRESS, "A0000000250000" },
63 { CV_AMERICANEXPRESS, "A00000002501" },
64 { CV_AMERICANEXPRESS, "A000000025010402" },
65 { CV_AMERICANEXPRESS, "A000000025010701" },
66 { CV_AMERICANEXPRESS, "A000000025010801" },
67 // Groupement des Cartes Bancaires "CB"
68 { CV_CB, "A0000000421010" }, // Cartes Bancaire EMV Card
69 { CV_CB, "A0000000422010" },
70 { CV_CB, "A0000000423010" },
71 { CV_CB, "A0000000424010" },
72 { CV_CB, "A0000000425010" },
73 // JCB CO., LTD.
74 { CV_JCB, "A00000006510" }, // JCB
75 { CV_JCB, "A0000000651010" }, // JCB J Smart Credit
76 // Other
77 { CV_OTHER, "A0000001544442" }, // Banricompras Debito - Banrisul - Banco do Estado do Rio Grande do SUL - S.A.
78 { CV_OTHER, "F0000000030001" }, // BRADESCO
79 { CV_OTHER, "A0000005241010" }, // RuPay - RuPay
80 { CV_OTHER, "D5780000021010" } // Bankaxept - Bankaxept
81 };
82 static const size_t AIDlistLen = sizeof(AIDlist)/sizeof(TAIDList);
83
84 static bool APDULogging = false;
85 void SetAPDULogging(bool logging) {
86 APDULogging = logging;
87 }
88
89 enum CardPSVendor GetCardPSVendor(uint8_t * AID, size_t AIDlen) {
90 char buf[100] = {0};
91 if (AIDlen < 1)
92 return CV_NA;
93
94 hex_to_buffer((uint8_t *)buf, AID, AIDlen, sizeof(buf) - 1, 0, 0, true);
95
96 for(int i = 0; i < AIDlistLen; i ++) {
97 if (strncmp(AIDlist[i].aid, buf, strlen(AIDlist[i].aid)) == 0){
98 return AIDlist[i].vendor;
99 }
100 }
101
102 return CV_NA;
103 }
104
105 static bool print_cb(void *data, const struct tlv *tlv, int level, bool is_leaf) {
106 emv_tag_dump(tlv, stdout, level);
107 if (is_leaf) {
108 dump_buffer(tlv->value, tlv->len, stdout, level);
109 }
110
111 return true;
112 }
113
114 void TLVPrintFromBuffer(uint8_t *data, int datalen) {
115 struct tlvdb *t = NULL;
116 t = tlvdb_parse_multi(data, datalen);
117 if (t) {
118 PrintAndLog("-------------------- TLV decoded --------------------");
119
120 tlvdb_visit(t, print_cb, NULL, 0);
121 tlvdb_free(t);
122 } else {
123 PrintAndLog("TLV ERROR: Can't parse response as TLV tree.");
124 }
125 }
126
127 void TLVPrintFromTLVLev(struct tlvdb *tlv, int level) {
128 if (!tlv)
129 return;
130
131 tlvdb_visit(tlv, print_cb, NULL, level);
132 }
133
134 void TLVPrintFromTLV(struct tlvdb *tlv) {
135 TLVPrintFromTLVLev(tlv, 0);
136 }
137
138 void TLVPrintAIDlistFromSelectTLV(struct tlvdb *tlv) {
139 PrintAndLog("|------------------|--------|-------------------------|");
140 PrintAndLog("| AID |Priority| Name |");
141 PrintAndLog("|------------------|--------|-------------------------|");
142
143 struct tlvdb *ttmp = tlvdb_find(tlv, 0x6f);
144 if (!ttmp)
145 PrintAndLog("| none |");
146
147 while (ttmp) {
148 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x84, NULL);
149 const struct tlv *tgName = tlvdb_get_inchild(ttmp, 0x50, NULL);
150 const struct tlv *tgPrio = tlvdb_get_inchild(ttmp, 0x87, NULL);
151 if (!tgAID)
152 break;
153 PrintAndLog("|%s| %s |%s|",
154 sprint_hex_inrow_ex(tgAID->value, tgAID->len, 18),
155 (tgPrio) ? sprint_hex(tgPrio->value, 1) : " ",
156 (tgName) ? sprint_ascii_ex(tgName->value, tgName->len, 25) : " ");
157
158 ttmp = tlvdb_find_next(ttmp, 0x6f);
159 }
160
161 PrintAndLog("|------------------|--------|-------------------------|");
162 }
163
164 struct tlvdb *GetPANFromTrack2(const struct tlv *track2) {
165 char track2Hex[200] = {0};
166 uint8_t PAN[100] = {0};
167 int PANlen = 0;
168 char *tmp = track2Hex;
169
170 if (!track2)
171 return NULL;
172
173 for (int i = 0; i < track2->len; ++i, tmp += 2)
174 sprintf(tmp, "%02x", (unsigned int)track2->value[i]);
175
176 int posD = strchr(track2Hex, 'd') - track2Hex;
177 if (posD < 1)
178 return NULL;
179
180 track2Hex[posD] = 0;
181 if (strlen(track2Hex) % 2) {
182 track2Hex[posD] = 'F';
183 track2Hex[posD + 1] = '\0';
184 }
185
186 param_gethex_to_eol(track2Hex, 0, PAN, sizeof(PAN), &PANlen);
187
188 return tlvdb_fixed(0x5a, PANlen, PAN);
189 }
190
191 struct tlvdb *GetdCVVRawFromTrack2(const struct tlv *track2) {
192 char track2Hex[200] = {0};
193 char dCVVHex[100] = {0};
194 uint8_t dCVV[100] = {0};
195 int dCVVlen = 0;
196 const int PINlen = 5; // must calculated from 9F67 MSD Offset but i have not seen this tag)
197 char *tmp = track2Hex;
198
199 if (!track2)
200 return NULL;
201
202 for (int i = 0; i < track2->len; ++i, tmp += 2)
203 sprintf(tmp, "%02x", (unsigned int)track2->value[i]);
204
205 int posD = strchr(track2Hex, 'd') - track2Hex;
206 if (posD < 1)
207 return NULL;
208
209 memset(dCVVHex, '0', 32);
210 // ATC
211 memcpy(dCVVHex + 0, track2Hex + posD + PINlen + 11, 4);
212 // PAN 5 hex
213 memcpy(dCVVHex + 4, track2Hex, 5);
214 // expire date
215 memcpy(dCVVHex + 9, track2Hex + posD + 1, 4);
216 // service code
217 memcpy(dCVVHex + 13, track2Hex + posD + 5, 3);
218
219 param_gethex_to_eol(dCVVHex, 0, dCVV, sizeof(dCVV), &dCVVlen);
220
221 return tlvdb_fixed(0x02, dCVVlen, dCVV);
222 }
223
224 int EMVExchangeEx(bool ActivateField, bool LeaveFieldON, sAPDU apdu, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
225 uint8_t data[APDU_RES_LEN] = {0};
226
227 *ResultLen = 0;
228 if (sw) *sw = 0;
229 uint16_t isw = 0;
230
231 if (ActivateField)
232 DropField();
233
234 // COMPUTE APDU
235 memcpy(data, &apdu, 5);
236 if (apdu.data)
237 memcpy(&data[5], apdu.data, apdu.Lc);
238
239 if (APDULogging)
240 PrintAndLog(">>>> %s", sprint_hex(data, 6 + apdu.Lc));
241
242 // 6 byes + data = INS + CLA + P1 + P2 + Lc + <data = Nc> + Le
243 int res = ExchangeAPDU14a(data, 6 + apdu.Lc, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
244
245 if (res) {
246 return res;
247 }
248
249 if (APDULogging)
250 PrintAndLog("<<<< %s", sprint_hex(Result, *ResultLen));
251
252 *ResultLen -= 2;
253 isw = Result[*ResultLen] * 0x0100 + Result[*ResultLen + 1];
254 if (sw)
255 *sw = isw;
256
257 if (isw != 0x9000) {
258 if (APDULogging)
259 PrintAndLog("APDU(%02x%02x) ERROR: [%4X] %s", apdu.CLA, apdu.INS, isw, GetAPDUCodeDescription(*sw >> 8, *sw & 0xff));
260 return 5;
261 }
262
263 // add to tlv tree
264 if (tlv) {
265 struct tlvdb *t = tlvdb_parse_multi(Result, *ResultLen);
266 tlvdb_add(tlv, t);
267 }
268
269 return 0;
270 }
271
272 int EMVExchange(bool LeaveFieldON, sAPDU apdu, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
273 return EMVExchangeEx(false, LeaveFieldON, apdu, Result, MaxResultLen, ResultLen, sw, tlv);
274 }
275
276 int EMVSelect(bool ActivateField, bool LeaveFieldON, uint8_t *AID, size_t AIDLen, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
277 return EMVExchangeEx(ActivateField, LeaveFieldON, (sAPDU){0x00, 0xa4, 0x04, 0x00, AIDLen, AID}, Result, MaxResultLen, ResultLen, sw, tlv);
278 }
279
280 int EMVSelectPSE(bool ActivateField, bool LeaveFieldON, uint8_t PSENum, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw) {
281 uint8_t buf[APDU_AID_LEN] = {0};
282 *ResultLen = 0;
283 int len = 0;
284 int res = 0;
285 switch (PSENum) {
286 case 1:
287 param_gethex_to_eol(PSElist[1], 0, buf, sizeof(buf), &len);
288 break;
289 case 2:
290 param_gethex_to_eol(PSElist[0], 0, buf, sizeof(buf), &len);
291 break;
292 default:
293 return -1;
294 }
295
296 // select
297 res = EMVSelect(ActivateField, LeaveFieldON, buf, len, Result, MaxResultLen, ResultLen, sw, NULL);
298
299 return res;
300 }
301
302 int EMVSearchPSE(bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvdb *tlv) {
303 uint8_t data[APDU_RES_LEN] = {0};
304 size_t datalen = 0;
305 uint16_t sw = 0;
306 int res;
307
308 // select PPSE
309 res = EMVSelectPSE(ActivateField, true, 2, data, sizeof(data), &datalen, &sw);
310
311 if (!res){
312 struct tlvdb *t = NULL;
313 t = tlvdb_parse_multi(data, datalen);
314 if (t) {
315 int retrycnt = 0;
316 struct tlvdb *ttmp = tlvdb_find_path(t, (tlv_tag_t[]){0x6f, 0xa5, 0xbf0c, 0x61, 0x00});
317 if (!ttmp)
318 PrintAndLog("PPSE don't have records.");
319
320 while (ttmp) {
321 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x4f, NULL);
322 if (tgAID) {
323 res = EMVSelect(false, true, (uint8_t *)tgAID->value, tgAID->len, data, sizeof(data), &datalen, &sw, tlv);
324
325 // retry if error and not returned sw error
326 if (res && res != 5) {
327 if (++retrycnt < 3){
328 continue;
329 } else {
330 // card select error, proxmark error
331 if (res == 1) {
332 PrintAndLog("Exit...");
333 return 1;
334 }
335
336 retrycnt = 0;
337 PrintAndLog("Retry failed [%s]. Skiped...", sprint_hex_inrow(tgAID->value, tgAID->len));
338 }
339
340 // next element
341 ttmp = tlvdb_find_next(ttmp, 0x61);
342 continue;
343 }
344 retrycnt = 0;
345
346 // all is ok
347 if (decodeTLV){
348 PrintAndLog("%s:", sprint_hex_inrow(tgAID->value, tgAID->len));
349 TLVPrintFromBuffer(data, datalen);
350 }
351 }
352
353 ttmp = tlvdb_find_next(ttmp, 0x61);
354 }
355
356 tlvdb_free(t);
357 } else {
358 PrintAndLog("PPSE ERROR: Can't get TLV from response.");
359 }
360 } else {
361 PrintAndLog("PPSE ERROR: Can't select PPSE AID. Error: %d", res);
362 }
363
364 if(!LeaveFieldON)
365 DropField();
366
367 return res;
368 }
369
370 int EMVSearch(bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvdb *tlv) {
371 uint8_t aidbuf[APDU_AID_LEN] = {0};
372 int aidlen = 0;
373 uint8_t data[APDU_RES_LEN] = {0};
374 size_t datalen = 0;
375 uint16_t sw = 0;
376
377 int res = 0;
378 int retrycnt = 0;
379 for(int i = 0; i < AIDlistLen; i ++) {
380 param_gethex_to_eol(AIDlist[i].aid, 0, aidbuf, sizeof(aidbuf), &aidlen);
381 res = EMVSelect((i == 0) ? ActivateField : false, (i == AIDlistLen - 1) ? LeaveFieldON : true, aidbuf, aidlen, data, sizeof(data), &datalen, &sw, tlv);
382 // retry if error and not returned sw error
383 if (res && res != 5) {
384 if (++retrycnt < 3){
385 i--;
386 } else {
387 // card select error, proxmark error
388 if (res == 1) {
389 PrintAndLog("Exit...");
390 return 1;
391 }
392
393 retrycnt = 0;
394 PrintAndLog("Retry failed [%s]. Skiped...", AIDlist[i].aid);
395 }
396 continue;
397 }
398 retrycnt = 0;
399
400 if (res)
401 continue;
402
403 if (decodeTLV){
404 PrintAndLog("%s:", AIDlist[i].aid);
405 TLVPrintFromBuffer(data, datalen);
406 }
407 }
408
409 return 0;
410 }
411
412 int EMVSelectApplication(struct tlvdb *tlv, uint8_t *AID, size_t *AIDlen) {
413 // check priority. 0x00 - highest
414 int prio = 0xffff;
415
416 *AIDlen = 0;
417
418 struct tlvdb *ttmp = tlvdb_find(tlv, 0x6f);
419 if (!ttmp)
420 return 1;
421
422 while (ttmp) {
423 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x84, NULL);
424 const struct tlv *tgPrio = tlvdb_get_inchild(ttmp, 0x87, NULL);
425
426 if (!tgAID)
427 break;
428
429 if (tgPrio) {
430 int pt = bytes_to_num((uint8_t*)tgPrio->value, (tgPrio->len < 2) ? tgPrio->len : 2);
431 if (pt < prio) {
432 prio = pt;
433
434 memcpy(AID, tgAID->value, tgAID->len);
435 *AIDlen = tgAID->len;
436 }
437 } else {
438 // takes the first application from list wo priority
439 if (!*AIDlen) {
440 memcpy(AID, tgAID->value, tgAID->len);
441 *AIDlen = tgAID->len;
442 }
443 }
444
445 ttmp = tlvdb_find_next(ttmp, 0x6f);
446 }
447
448 return 0;
449 }
450
451 int EMVGPO(bool LeaveFieldON, uint8_t *PDOL, size_t PDOLLen, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
452 return EMVExchange(LeaveFieldON, (sAPDU){0x80, 0xa8, 0x00, 0x00, PDOLLen, PDOL}, Result, MaxResultLen, ResultLen, sw, tlv);
453 }
454
455 int EMVReadRecord(bool LeaveFieldON, uint8_t SFI, uint8_t SFIrec, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
456 return EMVExchange(LeaveFieldON, (sAPDU){0x00, 0xb2, SFIrec, (SFI << 3) | 0x04, 0, NULL}, Result, MaxResultLen, ResultLen, sw, tlv);
457 }
458
459 int EMVAC(bool LeaveFieldON, uint8_t RefControl, uint8_t *CDOL, size_t CDOLLen, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
460 return EMVExchange(LeaveFieldON, (sAPDU){0x80, 0xae, RefControl, 0x00, CDOLLen, CDOL}, Result, MaxResultLen, ResultLen, sw, tlv);
461 }
462
463 int EMVGenerateChallenge(bool LeaveFieldON, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
464 return EMVExchange(LeaveFieldON, (sAPDU){0x00, 0x84, 0x00, 0x00, 0x00, NULL}, Result, MaxResultLen, ResultLen, sw, tlv);
465 }
466
467 int EMVInternalAuthenticate(bool LeaveFieldON, uint8_t *DDOL, size_t DDOLLen, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
468 return EMVExchange(LeaveFieldON, (sAPDU){0x00, 0x88, 0x00, 0x00, DDOLLen, DDOL}, Result, MaxResultLen, ResultLen, sw, tlv);
469 }
470
471 int MSCComputeCryptoChecksum(bool LeaveFieldON, uint8_t *UDOL, uint8_t UDOLlen, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
472 return EMVExchange(LeaveFieldON, (sAPDU){0x80, 0x2a, 0x8e, 0x80, UDOLlen, UDOL}, Result, MaxResultLen, ResultLen, sw, tlv);
473 }
474
475 // Authentication
476 static struct emv_pk *get_ca_pk(struct tlvdb *db) {
477 const struct tlv *df_tlv = tlvdb_get(db, 0x84, NULL);
478 const struct tlv *caidx_tlv = tlvdb_get(db, 0x8f, NULL);
479
480 if (!df_tlv || !caidx_tlv || df_tlv->len < 6 || caidx_tlv->len != 1)
481 return NULL;
482
483 PrintAndLog("CA public key index 0x%0x", caidx_tlv->value[0]);
484 return emv_pk_get_ca_pk(df_tlv->value, caidx_tlv->value[0]);
485 }
486
487 int trSDA(struct tlvdb *tlv) {
488
489 struct emv_pk *pk = get_ca_pk(tlv);
490 if (!pk) {
491 PrintAndLog("ERROR: Key not found. Exit.");
492 return 2;
493 }
494
495 struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
496 if (!issuer_pk) {
497 emv_pk_free(pk);
498 PrintAndLog("ERROR: Issuer certificate not found. Exit.");
499 return 2;
500 }
501
502 PrintAndLog("Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx",
503 issuer_pk->rid[0],
504 issuer_pk->rid[1],
505 issuer_pk->rid[2],
506 issuer_pk->rid[3],
507 issuer_pk->rid[4],
508 issuer_pk->index,
509 issuer_pk->serial[0],
510 issuer_pk->serial[1],
511 issuer_pk->serial[2]
512 );
513
514 const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
515 if (!sda_tlv || sda_tlv->len < 1) {
516 emv_pk_free(issuer_pk);
517 emv_pk_free(pk);
518 PrintAndLog("ERROR: Can't find input list for Offline Data Authentication. Exit.");
519 return 3;
520 }
521
522 struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
523 if (dac_db) {
524 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
525 PrintAndLog("SDA verified OK. (%02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]);
526 tlvdb_add(tlv, dac_db);
527 } else {
528 emv_pk_free(issuer_pk);
529 emv_pk_free(pk);
530 PrintAndLog("ERROR: SSAD verify error");
531 return 4;
532 }
533
534 emv_pk_free(issuer_pk);
535 emv_pk_free(pk);
536 return 0;
537 }
538
539 static const unsigned char default_ddol_value[] = {0x9f, 0x37, 0x04};
540 static struct tlv default_ddol_tlv = {.tag = 0x9f49, .len = 3, .value = default_ddol_value };
541
542 int trDDA(bool decodeTLV, struct tlvdb *tlv) {
543 uint8_t buf[APDU_RES_LEN] = {0};
544 size_t len = 0;
545 uint16_t sw = 0;
546
547 struct emv_pk *pk = get_ca_pk(tlv);
548 if (!pk) {
549 PrintAndLog("ERROR: Key not found. Exit.");
550 return 2;
551 }
552
553 const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
554 if (!sda_tlv || sda_tlv->len < 1) {
555 emv_pk_free(pk);
556 PrintAndLog("ERROR: Can't find input list for Offline Data Authentication. Exit.");
557 return 3;
558 }
559
560 struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
561 if (!issuer_pk) {
562 emv_pk_free(pk);
563 PrintAndLog("ERROR: Issuer certificate not found. Exit.");
564 return 2;
565 }
566 printf("Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
567 issuer_pk->rid[0],
568 issuer_pk->rid[1],
569 issuer_pk->rid[2],
570 issuer_pk->rid[3],
571 issuer_pk->rid[4],
572 issuer_pk->index,
573 issuer_pk->serial[0],
574 issuer_pk->serial[1],
575 issuer_pk->serial[2]
576 );
577
578 struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
579 if (!icc_pk) {
580 emv_pk_free(pk);
581 emv_pk_free(issuer_pk);
582 PrintAndLog("ERROR: ICC setrificate not found. Exit.");
583 return 2;
584 }
585 printf("ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
586 icc_pk->rid[0],
587 icc_pk->rid[1],
588 icc_pk->rid[2],
589 icc_pk->rid[3],
590 icc_pk->rid[4],
591 icc_pk->index,
592 icc_pk->serial[0],
593 icc_pk->serial[1],
594 icc_pk->serial[2]
595 );
596
597 struct emv_pk *icc_pe_pk = emv_pki_recover_icc_pe_cert(issuer_pk, tlv);
598 if (!icc_pe_pk) {
599 PrintAndLog("WARNING: ICC PE PK recover error. ");
600 } else {
601 printf("ICC PE PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
602 icc_pe_pk->rid[0],
603 icc_pe_pk->rid[1],
604 icc_pe_pk->rid[2],
605 icc_pe_pk->rid[3],
606 icc_pe_pk->rid[4],
607 icc_pe_pk->index,
608 icc_pe_pk->serial[0],
609 icc_pe_pk->serial[1],
610 icc_pe_pk->serial[2]
611 );
612 }
613
614 // 9F4B: Signed Dynamic Application Data
615 const struct tlv *sdad_tlv = tlvdb_get(tlv, 0x9f4b, NULL);
616 // DDA with internal authenticate OR fDDA with filled 0x9F4B tag (GPO result)
617 // EMV kernel3 v2.4, contactless book C-3, C.1., page 147
618 if (sdad_tlv) {
619 PrintAndLog("\n* * Got Signed Dynamic Application Data (9F4B) form GPO. Maybe fDDA...");
620
621 const struct tlvdb *atc_db = emv_pki_recover_atc_ex(icc_pk, tlv, true);
622 if (!atc_db) {
623 PrintAndLog("ERROR: Can't recover IDN (ICC Dynamic Number)");
624 emv_pk_free(pk);
625 emv_pk_free(issuer_pk);
626 emv_pk_free(icc_pk);
627 return 8;
628 }
629
630 // 9f36 Application Transaction Counter (ATC)
631 const struct tlv *atc_tlv = tlvdb_get(atc_db, 0x9f36, NULL);
632 if(atc_tlv) {
633 PrintAndLog("\nATC (Application Transaction Counter) [%zu] %s", atc_tlv->len, sprint_hex_inrow(atc_tlv->value, atc_tlv->len));
634
635 const struct tlv *core_atc_tlv = tlvdb_get(tlv, 0x9f36, NULL);
636 if(tlv_equal(core_atc_tlv, atc_tlv)) {
637 PrintAndLog("ATC check OK.");
638 PrintAndLog("fDDA (fast DDA) verified OK.");
639 } else {
640 PrintAndLog("ERROR: fDDA verified, but ATC in the certificate and ATC in the record not the same.");
641 }
642 } else {
643 PrintAndLog("\nERROR: fDDA (fast DDA) verify error");
644 emv_pk_free(pk);
645 emv_pk_free(issuer_pk);
646 emv_pk_free(icc_pk);
647 return 9;
648 }
649 } else {
650 struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
651 if (dac_db) {
652 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
653 printf("SDA verified OK. (%02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]);
654 tlvdb_add(tlv, dac_db);
655 } else {
656 PrintAndLog("ERROR: SSAD verify error");
657 emv_pk_free(pk);
658 emv_pk_free(issuer_pk);
659 emv_pk_free(icc_pk);
660 return 4;
661 }
662
663 PrintAndLog("\n* Calc DDOL");
664 const struct tlv *ddol_tlv = tlvdb_get(tlv, 0x9f49, NULL);
665 if (!ddol_tlv) {
666 ddol_tlv = &default_ddol_tlv;
667 PrintAndLog("DDOL [9f49] not found. Using default DDOL");
668 }
669
670 struct tlv *ddol_data_tlv = dol_process(ddol_tlv, tlv, 0);
671 if (!ddol_data_tlv) {
672 PrintAndLog("ERROR: Can't create DDOL TLV");
673 emv_pk_free(pk);
674 emv_pk_free(issuer_pk);
675 emv_pk_free(icc_pk);
676 return 5;
677 }
678
679 PrintAndLog("DDOL data[%d]: %s", ddol_data_tlv->len, sprint_hex(ddol_data_tlv->value, ddol_data_tlv->len));
680
681 PrintAndLog("\n* Internal Authenticate");
682 int res = EMVInternalAuthenticate(true, (uint8_t *)ddol_data_tlv->value, ddol_data_tlv->len, buf, sizeof(buf), &len, &sw, NULL);
683 if (res) {
684 PrintAndLog("Internal Authenticate error(%d): %4x. Exit...", res, sw);
685 free(ddol_data_tlv);
686 emv_pk_free(pk);
687 emv_pk_free(issuer_pk);
688 emv_pk_free(icc_pk);
689 return 6;
690 }
691
692 struct tlvdb *dda_db = NULL;
693 if (buf[0] == 0x80) {
694 if (len < 3 ) {
695 PrintAndLog("ERROR: Internal Authenticate format1 parsing error. length=%d", len);
696 } else {
697 // 9f4b Signed Dynamic Application Data
698 dda_db = tlvdb_fixed(0x9f4b, len - 2, buf + 2);
699 tlvdb_add(tlv, dda_db);
700 if (decodeTLV){
701 PrintAndLog("* * Decode response format 1:");
702 TLVPrintFromTLV(dda_db);
703 }
704 }
705 } else {
706 dda_db = tlvdb_parse_multi(buf, len);
707 if(!dda_db) {
708 PrintAndLog("ERROR: Can't parse Internal Authenticate result as TLV");
709 free(ddol_data_tlv);
710 emv_pk_free(pk);
711 emv_pk_free(issuer_pk);
712 emv_pk_free(icc_pk);
713 return 7;
714 }
715 tlvdb_add(tlv, dda_db);
716
717 if (decodeTLV)
718 TLVPrintFromTLV(dda_db);
719 }
720
721 struct tlvdb *idn_db = emv_pki_recover_idn_ex(icc_pk, dda_db, ddol_data_tlv, true);
722 free(ddol_data_tlv);
723 if (!idn_db) {
724 PrintAndLog("ERROR: Can't recover IDN (ICC Dynamic Number)");
725 tlvdb_free(dda_db);
726 emv_pk_free(pk);
727 emv_pk_free(issuer_pk);
728 emv_pk_free(icc_pk);
729 return 8;
730 }
731 tlvdb_free(dda_db);
732
733 // 9f4c ICC Dynamic Number
734 const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL);
735 if(idn_tlv) {
736 PrintAndLog("\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len));
737 PrintAndLog("DDA verified OK.");
738 tlvdb_add(tlv, idn_db);
739 tlvdb_free(idn_db);
740 } else {
741 PrintAndLog("\nERROR: DDA verify error");
742 tlvdb_free(idn_db);
743
744 emv_pk_free(pk);
745 emv_pk_free(issuer_pk);
746 emv_pk_free(icc_pk);
747 return 9;
748 }
749 }
750
751 emv_pk_free(pk);
752 emv_pk_free(issuer_pk);
753 emv_pk_free(icc_pk);
754 return 0;
755 }
756
757 int trCDA(struct tlvdb *tlv, struct tlvdb *ac_tlv, struct tlv *pdol_data_tlv, struct tlv *ac_data_tlv) {
758
759 struct emv_pk *pk = get_ca_pk(tlv);
760 if (!pk) {
761 PrintAndLog("ERROR: Key not found. Exit.");
762 return 2;
763 }
764
765 const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
766 if (!sda_tlv || sda_tlv->len < 1) {
767 PrintAndLog("ERROR: Can't find input list for Offline Data Authentication. Exit.");
768 emv_pk_free(pk);
769 return 3;
770 }
771
772 struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
773 if (!issuer_pk) {
774 PrintAndLog("ERROR: Issuer certificate not found. Exit.");
775 emv_pk_free(pk);
776 return 2;
777 }
778 printf("Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
779 issuer_pk->rid[0],
780 issuer_pk->rid[1],
781 issuer_pk->rid[2],
782 issuer_pk->rid[3],
783 issuer_pk->rid[4],
784 issuer_pk->index,
785 issuer_pk->serial[0],
786 issuer_pk->serial[1],
787 issuer_pk->serial[2]
788 );
789
790 struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
791 if (!icc_pk) {
792 PrintAndLog("ERROR: ICC setrificate not found. Exit.");
793 emv_pk_free(pk);
794 emv_pk_free(issuer_pk);
795 return 2;
796 }
797 printf("ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
798 icc_pk->rid[0],
799 icc_pk->rid[1],
800 icc_pk->rid[2],
801 icc_pk->rid[3],
802 icc_pk->rid[4],
803 icc_pk->index,
804 icc_pk->serial[0],
805 icc_pk->serial[1],
806 icc_pk->serial[2]
807 );
808
809 struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
810 if (dac_db) {
811 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
812 PrintAndLog("SSAD verified OK. (%02hhx:%02hhx)", dac_tlv->value[0], dac_tlv->value[1]);
813 tlvdb_add(tlv, dac_db);
814 } else {
815 PrintAndLog("ERROR: SSAD verify error");
816 emv_pk_free(pk);
817 emv_pk_free(issuer_pk);
818 emv_pk_free(icc_pk);
819 return 4;
820 }
821
822 PrintAndLog("\n* * Check Signed Dynamic Application Data (SDAD)");
823 struct tlvdb *idn_db = emv_pki_perform_cda_ex(icc_pk, tlv, ac_tlv,
824 pdol_data_tlv, // pdol
825 ac_data_tlv, // cdol1
826 NULL, // cdol2
827 true);
828 if (idn_db) {
829 const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL);
830 PrintAndLog("\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len));
831 PrintAndLog("CDA verified OK.");
832 tlvdb_add(tlv, idn_db);
833 } else {
834 PrintAndLog("\nERROR: CDA verify error");
835 }
836
837 emv_pk_free(pk);
838 emv_pk_free(issuer_pk);
839 emv_pk_free(icc_pk);
840 return 0;
841 }
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