Merge pull request #504 from merlokk/emv3
[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 MSCComputeCryptoChecksum(bool LeaveFieldON, uint8_t *UDOL, uint8_t UDOLlen, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) {
468 return EMVExchange(LeaveFieldON, (sAPDU){0x80, 0x2a, 0x8e, 0x80, UDOLlen, UDOL}, Result, MaxResultLen, ResultLen, sw, tlv);
469 }
470
471 // Authentication
472 int trSDA(uint8_t *AID, size_t AIDlen, struct tlvdb *tlv) {
473 if (AIDlen < 5)
474 return 1;
475
476 // Get public key index (0x8F)
477 //int PubKeyIndx = 0;
478
479 // Get public key from key storage
480 // GetPublicKey(AID(0..5), PubKeyIndx)
481
482 // Processing of Issuer Public Key Certificate (0x90)
483 //Certificate =
484
485 // check issuer public key certificate
486
487 // Verification of Signed Static Application Data (SSAD) (0x93)
488
489 // get 9F4A Static Data Authentication Tag List
490
491 // set Data Auth Code (9F45) from SSAD
492
493 return 0;
494 }
495
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