X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/3c5fce2ba7d49f3ebea05eed187a9b5ee8189803..a7e1b46d5119220dba8481a782b70e35cf124afc:/client/emv/emvcore.c diff --git a/client/emv/emvcore.c b/client/emv/emvcore.c index 5c737b05..36f6f8eb 100644 --- a/client/emv/emvcore.c +++ b/client/emv/emvcore.c @@ -12,75 +12,96 @@ // Got from here. Thanks) // https://eftlab.co.uk/index.php/site-map/knowledge-base/211-emv-aid-rid-pix -const char *PSElist [] = { +static const char *PSElist [] = { "325041592E5359532E4444463031", // 2PAY.SYS.DDF01 - Visa Proximity Payment System Environment - PPSE "315041592E5359532E4444463031" // 1PAY.SYS.DDF01 - Visa Payment System Environment - PSE }; -const size_t PSElistLen = sizeof(PSElist)/sizeof(char*); +//static const size_t PSElistLen = sizeof(PSElist)/sizeof(char*); -const char *AIDlist [] = { +typedef struct { + enum CardPSVendor vendor; + const char* aid; +} TAIDList; + +static const TAIDList AIDlist [] = { // Visa International - "A00000000305076010", // VISA ELO Credit - "A0000000031010", // VISA Debit/Credit (Classic) - "A0000000031010", // ddddddddddddddddddddddddddddddddddddddddddddddddddddddddd - "A000000003101001", // VISA Credit - "A000000003101002", // VISA Debit - "A0000000032010", // VISA Electron - "A0000000032020", // VISA - "A0000000033010", // VISA Interlink - "A0000000034010", // VISA Specific - "A0000000035010", // VISA Specific - "A0000000036010", // Domestic Visa Cash Stored Value - "A0000000036020", // International Visa Cash Stored Value - "A0000000038002", // VISA Auth, VisaRemAuthen EMV-CAP (DPA) - "A0000000038010", // VISA Plus - "A0000000039010", // VISA Loyalty - "A000000003999910", // VISA Proprietary ATM + { CV_VISA, "A00000000305076010"}, // VISA ELO Credit + { CV_VISA, "A0000000031010" }, // VISA Debit/Credit (Classic) + { CV_VISA, "A000000003101001" }, // VISA Credit + { CV_VISA, "A000000003101002" }, // VISA Debit + { CV_VISA, "A0000000032010" }, // VISA Electron + { CV_VISA, "A0000000032020" }, // VISA + { CV_VISA, "A0000000033010" }, // VISA Interlink + { CV_VISA, "A0000000034010" }, // VISA Specific + { CV_VISA, "A0000000035010" }, // VISA Specific + { CV_VISA, "A0000000036010" }, // Domestic Visa Cash Stored Value + { CV_VISA, "A0000000036020" }, // International Visa Cash Stored Value + { CV_VISA, "A0000000038002" }, // VISA Auth, VisaRemAuthen EMV-CAP (DPA) + { CV_VISA, "A0000000038010" }, // VISA Plus + { CV_VISA, "A0000000039010" }, // VISA Loyalty + { CV_VISA, "A000000003999910" }, // VISA Proprietary ATM // Visa USA - "A000000098", // Debit Card - "A0000000980848", // Debit Card + { CV_VISA, "A000000098" }, // Debit Card + { CV_VISA, "A0000000980848" }, // Debit Card // Mastercard International - "A00000000401", // MasterCard PayPass - "A0000000041010", // MasterCard Credit - "A00000000410101213", // MasterCard Credit - "A00000000410101215", // MasterCard Credit - "A0000000042010", // MasterCard Specific - "A0000000043010", // MasterCard Specific - "A0000000043060", // Maestro (Debit) - "A000000004306001", // Maestro (Debit) - "A0000000044010", // MasterCard Specific - "A0000000045010", // MasterCard Specific - "A0000000046000", // Cirrus - "A0000000048002", // SecureCode Auth EMV-CAP - "A0000000049999", // MasterCard PayPass + { CV_MASTERCARD, "A00000000401" }, // MasterCard PayPass + { CV_MASTERCARD, "A0000000041010" }, // MasterCard Credit + { CV_MASTERCARD, "A00000000410101213" }, // MasterCard Credit + { CV_MASTERCARD, "A00000000410101215" }, // MasterCard Credit + { CV_MASTERCARD, "A0000000042010" }, // MasterCard Specific + { CV_MASTERCARD, "A0000000043010" }, // MasterCard Specific + { CV_MASTERCARD, "A0000000043060" }, // Maestro (Debit) + { CV_MASTERCARD, "A000000004306001" }, // Maestro (Debit) + { CV_MASTERCARD, "A0000000044010" }, // MasterCard Specific + { CV_MASTERCARD, "A0000000045010" }, // MasterCard Specific + { CV_MASTERCARD, "A0000000046000" }, // Cirrus + { CV_MASTERCARD, "A0000000048002" }, // SecureCode Auth EMV-CAP + { CV_MASTERCARD, "A0000000049999" }, // MasterCard PayPass // American Express - "A000000025", - "A0000000250000", - "A00000002501", - "A000000025010402", - "A000000025010701", - "A000000025010801", + { CV_AMERICANEXPRESS, "A000000025" }, + { CV_AMERICANEXPRESS, "A0000000250000" }, + { CV_AMERICANEXPRESS, "A00000002501" }, + { CV_AMERICANEXPRESS, "A000000025010402" }, + { CV_AMERICANEXPRESS, "A000000025010701" }, + { CV_AMERICANEXPRESS, "A000000025010801" }, // Groupement des Cartes Bancaires "CB" - "A0000000421010", // Cartes Bancaire EMV Card - "A0000000422010", - "A0000000423010", - "A0000000424010", - "A0000000425010", + { CV_CB, "A0000000421010" }, // Cartes Bancaire EMV Card + { CV_CB, "A0000000422010" }, + { CV_CB, "A0000000423010" }, + { CV_CB, "A0000000424010" }, + { CV_CB, "A0000000425010" }, // JCB CO., LTD. - "A00000006510", // JCB - "A0000000651010", // JCB J Smart Credit - "A0000001544442", // Banricompras Debito - Banrisul - Banco do Estado do Rio Grande do SUL - S.A. - "F0000000030001", // BRADESCO - "A0000005241010", // RuPay - RuPay - "D5780000021010" // Bankaxept - Bankaxept + { CV_JCB, "A00000006510" }, // JCB + { CV_JCB, "A0000000651010" }, // JCB J Smart Credit + // Other + { CV_OTHER, "A0000001544442" }, // Banricompras Debito - Banrisul - Banco do Estado do Rio Grande do SUL - S.A. + { CV_OTHER, "F0000000030001" }, // BRADESCO + { CV_OTHER, "A0000005241010" }, // RuPay - RuPay + { CV_OTHER, "D5780000021010" } // Bankaxept - Bankaxept }; -const size_t AIDlistLen = sizeof(AIDlist)/sizeof(char*); +static const size_t AIDlistLen = sizeof(AIDlist)/sizeof(TAIDList); static bool APDULogging = false; void SetAPDULogging(bool logging) { APDULogging = logging; } +enum CardPSVendor GetCardPSVendor(uint8_t * AID, size_t AIDlen) { + char buf[100] = {0}; + if (AIDlen < 1) + return CV_NA; + + hex_to_buffer((uint8_t *)buf, AID, AIDlen, sizeof(buf) - 1, 0, 0, true); + + for(int i = 0; i < AIDlistLen; i ++) { + if (strncmp(AIDlist[i].aid, buf, strlen(AIDlist[i].aid)) == 0){ + return AIDlist[i].vendor; + } + } + + return CV_NA; +} + static bool print_cb(void *data, const struct tlv *tlv, int level, bool is_leaf) { emv_tag_dump(tlv, stdout, level); if (is_leaf) { @@ -103,11 +124,15 @@ void TLVPrintFromBuffer(uint8_t *data, int datalen) { } } -void TLVPrintFromTLV(struct tlvdb *tlv) { +void TLVPrintFromTLVLev(struct tlvdb *tlv, int level) { if (!tlv) return; - tlvdb_visit(tlv, print_cb, NULL, 0); + tlvdb_visit(tlv, print_cb, NULL, level); +} + +void TLVPrintFromTLV(struct tlvdb *tlv) { + TLVPrintFromTLVLev(tlv, 0); } void TLVPrintAIDlistFromSelectTLV(struct tlvdb *tlv) { @@ -136,41 +161,94 @@ void TLVPrintAIDlistFromSelectTLV(struct tlvdb *tlv) { PrintAndLog("|------------------|--------|-------------------------|"); } +struct tlvdb *GetPANFromTrack2(const struct tlv *track2) { + char track2Hex[200] = {0}; + uint8_t PAN[100] = {0}; + int PANlen = 0; + char *tmp = track2Hex; -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) { + if (!track2) + return NULL; + + for (int i = 0; i < track2->len; ++i, tmp += 2) + sprintf(tmp, "%02x", (unsigned int)track2->value[i]); + + int posD = strchr(track2Hex, 'd') - track2Hex; + if (posD < 1) + return NULL; + + track2Hex[posD] = 0; + if (strlen(track2Hex) % 2) { + track2Hex[posD] = 'F'; + track2Hex[posD + 1] = '\0'; + } + + param_gethex_to_eol(track2Hex, 0, PAN, sizeof(PAN), &PANlen); + + return tlvdb_fixed(0x5a, PANlen, PAN); +} + +struct tlvdb *GetdCVVRawFromTrack2(const struct tlv *track2) { + char track2Hex[200] = {0}; + char dCVVHex[100] = {0}; + uint8_t dCVV[100] = {0}; + int dCVVlen = 0; + const int PINlen = 5; // must calculated from 9F67 MSD Offset but i have not seen this tag) + char *tmp = track2Hex; + + if (!track2) + return NULL; + + for (int i = 0; i < track2->len; ++i, tmp += 2) + sprintf(tmp, "%02x", (unsigned int)track2->value[i]); + + int posD = strchr(track2Hex, 'd') - track2Hex; + if (posD < 1) + return NULL; + + memset(dCVVHex, '0', 32); + // ATC + memcpy(dCVVHex + 0, track2Hex + posD + PINlen + 11, 4); + // PAN 5 hex + memcpy(dCVVHex + 4, track2Hex, 5); + // expire date + memcpy(dCVVHex + 9, track2Hex + posD + 1, 4); + // service code + memcpy(dCVVHex + 13, track2Hex + posD + 5, 3); + + param_gethex_to_eol(dCVVHex, 0, dCVV, sizeof(dCVV), &dCVVlen); + + return tlvdb_fixed(0x02, dCVVlen, dCVV); +} + +int EMVExchangeEx(bool ActivateField, bool LeaveFieldON, sAPDU apdu, bool IncludeLe, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) { uint8_t data[APDU_RES_LEN] = {0}; + *ResultLen = 0; if (sw) *sw = 0; uint16_t isw = 0; - // select APDU - data[0] = 0x00; - data[1] = 0xA4; - data[2] = 0x04; - data[3] = 0x00; - data[4] = AIDLen; - memcpy(&data[5], AID, AIDLen); - if (ActivateField) DropField(); - if (APDULogging) - PrintAndLog(">>>> %s", sprint_hex(data, AIDLen + 6)); - - int res = ExchangeAPDU14a(data, AIDLen + 6, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen); + // COMPUTE APDU + memcpy(data, &apdu, 5); + if (apdu.data) + memcpy(&data[5], apdu.data, apdu.Lc); if (APDULogging) - PrintAndLog("<<<< %s", sprint_hex(Result, *ResultLen)); + PrintAndLog(">>>> %s", sprint_hex(data, (IncludeLe?6:5) + apdu.Lc)); + + // 6 byes + data = INS + CLA + P1 + P2 + Lc + + Le(?IncludeLe) + int res = ExchangeAPDU14a(data, (IncludeLe?6:5) + apdu.Lc, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen); if (res) { return res; } - - if (*ResultLen < 2) { - PrintAndLog("SELECT ERROR: returned %d bytes", *ResultLen); - return 5; - } - + + if (APDULogging) + PrintAndLog("<<<< %s", sprint_hex(Result, *ResultLen)); + *ResultLen -= 2; isw = Result[*ResultLen] * 0x0100 + Result[*ResultLen + 1]; if (sw) @@ -178,7 +256,7 @@ int EMVSelect(bool ActivateField, bool LeaveFieldON, uint8_t *AID, size_t AIDLen if (isw != 0x9000) { if (APDULogging) - PrintAndLog("SELECT ERROR: [%4X] %s", isw, GetAPDUCodeDescription(*sw >> 8, *sw & 0xff)); + PrintAndLog("APDU(%02x%02x) ERROR: [%4X] %s", apdu.CLA, apdu.INS, isw, GetAPDUCodeDescription(*sw >> 8, *sw & 0xff)); return 5; } @@ -191,6 +269,14 @@ int EMVSelect(bool ActivateField, bool LeaveFieldON, uint8_t *AID, size_t AIDLen return 0; } +int EMVExchange(bool LeaveFieldON, sAPDU apdu, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) { + return EMVExchangeEx(false, LeaveFieldON, apdu, true, Result, MaxResultLen, ResultLen, sw, tlv); +} + +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) { + return EMVExchangeEx(ActivateField, LeaveFieldON, (sAPDU){0x00, 0xa4, 0x04, 0x00, AIDLen, AID}, true, Result, MaxResultLen, ResultLen, sw, tlv); +} + int EMVSelectPSE(bool ActivateField, bool LeaveFieldON, uint8_t PSENum, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw) { uint8_t buf[APDU_AID_LEN] = {0}; *ResultLen = 0; @@ -291,7 +377,7 @@ int EMVSearch(bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvd int res = 0; int retrycnt = 0; for(int i = 0; i < AIDlistLen; i ++) { - param_gethex_to_eol(AIDlist[i], 0, aidbuf, sizeof(aidbuf), &aidlen); + param_gethex_to_eol(AIDlist[i].aid, 0, aidbuf, sizeof(aidbuf), &aidlen); res = EMVSelect((i == 0) ? ActivateField : false, (i == AIDlistLen - 1) ? LeaveFieldON : true, aidbuf, aidlen, data, sizeof(data), &datalen, &sw, tlv); // retry if error and not returned sw error if (res && res != 5) { @@ -305,7 +391,7 @@ int EMVSearch(bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvd } retrycnt = 0; - PrintAndLog("Retry failed [%s]. Skiped...", AIDlist[i]); + PrintAndLog("Retry failed [%s]. Skiped...", AIDlist[i].aid); } continue; } @@ -315,7 +401,7 @@ int EMVSearch(bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvd continue; if (decodeTLV){ - PrintAndLog("%s:", AIDlist[i]); + PrintAndLog("%s:", AIDlist[i].aid); TLVPrintFromBuffer(data, datalen); } } @@ -324,7 +410,7 @@ int EMVSearch(bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvd } int EMVSelectApplication(struct tlvdb *tlv, uint8_t *AID, size_t *AIDlen) { - // needs to check priority. 0x00 - highest + // check priority. 0x00 - highest int prio = 0xffff; *AIDlen = 0; @@ -363,101 +449,403 @@ int EMVSelectApplication(struct tlvdb *tlv, uint8_t *AID, size_t *AIDlen) { } 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) { - uint8_t data[APDU_RES_LEN] = {0}; - *ResultLen = 0; - if (sw) *sw = 0; - uint16_t isw = 0; - - // GPO APDU - data[0] = 0x80; - data[1] = 0xA8; - data[2] = 0x00; - data[3] = 0x00; - data[4] = PDOLLen; - if (PDOL) - memcpy(&data[5], PDOL, PDOLLen); - - - if (APDULogging) - PrintAndLog(">>>> %s", sprint_hex(data, PDOLLen + 5)); + return EMVExchange(LeaveFieldON, (sAPDU){0x80, 0xa8, 0x00, 0x00, PDOLLen, PDOL}, Result, MaxResultLen, ResultLen, sw, tlv); +} - int res = ExchangeAPDU14a(data, PDOLLen + 5, false, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen); - - if (APDULogging) - PrintAndLog("<<<< %s", sprint_hex(Result, *ResultLen)); - - if (res) { - return res; +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) { + int res = EMVExchange(LeaveFieldON, (sAPDU){0x00, 0xb2, SFIrec, (SFI << 3) | 0x04, 0, NULL}, Result, MaxResultLen, ResultLen, sw, tlv); + if (*sw == 0x6700) { + PrintAndLog(">>> trying to reissue command withouth Le..."); + res = EMVExchangeEx(false, LeaveFieldON, (sAPDU){0x00, 0xb2, SFIrec, (SFI << 3) | 0x04, 0, NULL}, false, Result, MaxResultLen, ResultLen, sw, tlv); } - - if (*ResultLen < 2) { - PrintAndLog("GPO ERROR: returned %d bytes", *ResultLen); - return 5; + return res; +} + +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) { + return EMVExchange(LeaveFieldON, (sAPDU){0x80, 0xae, RefControl, 0x00, CDOLLen, CDOL}, Result, MaxResultLen, ResultLen, sw, tlv); +} + +int EMVGenerateChallenge(bool LeaveFieldON, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) { + int res = EMVExchange(LeaveFieldON, (sAPDU){0x00, 0x84, 0x00, 0x00, 0x00, NULL}, Result, MaxResultLen, ResultLen, sw, tlv); + if (*sw == 0x6700) { + PrintAndLog(">>> trying to reissue command withouth Le..."); + res = EMVExchangeEx(false, LeaveFieldON, (sAPDU){0x00, 0x84, 0x00, 0x00, 0x00, NULL}, false, Result, MaxResultLen, ResultLen, sw, tlv); } - - *ResultLen -= 2; - isw = Result[*ResultLen] * 0x0100 + Result[*ResultLen + 1]; - if (sw) - *sw = isw; + return res; +} - if (isw != 0x9000) { - if (APDULogging) - PrintAndLog("GPO ERROR: [%4X] %s", isw, GetAPDUCodeDescription(*sw >> 8, *sw & 0xff)); - return 5; +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) { + return EMVExchange(LeaveFieldON, (sAPDU){0x00, 0x88, 0x00, 0x00, DDOLLen, DDOL}, Result, MaxResultLen, ResultLen, sw, tlv); +} + +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) { + return EMVExchange(LeaveFieldON, (sAPDU){0x80, 0x2a, 0x8e, 0x80, UDOLlen, UDOL}, Result, MaxResultLen, ResultLen, sw, tlv); +} + +// Authentication +static struct emv_pk *get_ca_pk(struct tlvdb *db) { + const struct tlv *df_tlv = tlvdb_get(db, 0x84, NULL); + const struct tlv *caidx_tlv = tlvdb_get(db, 0x8f, NULL); + + if (!df_tlv || !caidx_tlv || df_tlv->len < 6 || caidx_tlv->len != 1) + return NULL; + + PrintAndLog("CA public key index 0x%0x", caidx_tlv->value[0]); + return emv_pk_get_ca_pk(df_tlv->value, caidx_tlv->value[0]); +} + +int trSDA(struct tlvdb *tlv) { + + struct emv_pk *pk = get_ca_pk(tlv); + if (!pk) { + PrintAndLog("ERROR: Key not found. Exit."); + return 2; + } + + struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv); + if (!issuer_pk) { + emv_pk_free(pk); + PrintAndLog("ERROR: Issuer certificate not found. Exit."); + return 2; } - // add to tlv tree - if (tlv) { - struct tlvdb *t = tlvdb_parse_multi(Result, *ResultLen); - tlvdb_add(tlv, t); + PrintAndLog("Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx", + issuer_pk->rid[0], + issuer_pk->rid[1], + issuer_pk->rid[2], + issuer_pk->rid[3], + issuer_pk->rid[4], + issuer_pk->index, + issuer_pk->serial[0], + issuer_pk->serial[1], + issuer_pk->serial[2] + ); + + const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL); + if (!sda_tlv || sda_tlv->len < 1) { + emv_pk_free(issuer_pk); + emv_pk_free(pk); + PrintAndLog("ERROR: Can't find input list for Offline Data Authentication. Exit."); + return 3; + } + + struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv); + if (dac_db) { + const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL); + PrintAndLog("SDA verified OK. (%02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]); + tlvdb_add(tlv, dac_db); + } else { + emv_pk_free(issuer_pk); + emv_pk_free(pk); + PrintAndLog("ERROR: SSAD verify error"); + return 4; } + emv_pk_free(issuer_pk); + emv_pk_free(pk); return 0; } -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) { - uint8_t data[10] = {0}; - *ResultLen = 0; - if (sw) *sw = 0; - uint16_t isw = 0; - - // read record APDU - data[0] = 0x00; - data[1] = 0xb2; - data[2] = SFIrec; - data[3] = (SFI << 3) | 0x04; - data[4] = 0; - - if (APDULogging) - PrintAndLog(">>>> %s", sprint_hex(data, 5)); +static const unsigned char default_ddol_value[] = {0x9f, 0x37, 0x04}; +static struct tlv default_ddol_tlv = {.tag = 0x9f49, .len = 3, .value = default_ddol_value }; - int res = ExchangeAPDU14a(data, 5, false, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen); - - if (APDULogging) - PrintAndLog("<<<< %s", sprint_hex(Result, *ResultLen)); - - if (res) { - return res; +int trDDA(bool decodeTLV, struct tlvdb *tlv) { + uint8_t buf[APDU_RES_LEN] = {0}; + size_t len = 0; + uint16_t sw = 0; + + struct emv_pk *pk = get_ca_pk(tlv); + if (!pk) { + PrintAndLog("ERROR: Key not found. Exit."); + return 2; } - *ResultLen -= 2; - isw = Result[*ResultLen] * 0x0100 + Result[*ResultLen + 1]; - if (sw) - *sw = isw; + const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL); + if (!sda_tlv || sda_tlv->len < 1) { + emv_pk_free(pk); + PrintAndLog("ERROR: Can't find input list for Offline Data Authentication. Exit."); + return 3; + } - if (isw != 0x9000) { - if (APDULogging) - PrintAndLog("Read record ERROR: [%4X] %s", isw, GetAPDUCodeDescription(*sw >> 8, *sw & 0xff)); - return 5; + struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv); + if (!issuer_pk) { + emv_pk_free(pk); + PrintAndLog("ERROR: Issuer certificate not found. Exit."); + return 2; + } + printf("Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n", + issuer_pk->rid[0], + issuer_pk->rid[1], + issuer_pk->rid[2], + issuer_pk->rid[3], + issuer_pk->rid[4], + issuer_pk->index, + issuer_pk->serial[0], + issuer_pk->serial[1], + issuer_pk->serial[2] + ); + + struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv); + if (!icc_pk) { + emv_pk_free(pk); + emv_pk_free(issuer_pk); + PrintAndLog("ERROR: ICC setrificate not found. Exit."); + return 2; + } + printf("ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n", + icc_pk->rid[0], + icc_pk->rid[1], + icc_pk->rid[2], + icc_pk->rid[3], + icc_pk->rid[4], + icc_pk->index, + icc_pk->serial[0], + icc_pk->serial[1], + icc_pk->serial[2] + ); + + struct emv_pk *icc_pe_pk = emv_pki_recover_icc_pe_cert(issuer_pk, tlv); + if (!icc_pe_pk) { + PrintAndLog("WARNING: ICC PE PK recover error. "); + } else { + printf("ICC PE PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n", + icc_pe_pk->rid[0], + icc_pe_pk->rid[1], + icc_pe_pk->rid[2], + icc_pe_pk->rid[3], + icc_pe_pk->rid[4], + icc_pe_pk->index, + icc_pe_pk->serial[0], + icc_pe_pk->serial[1], + icc_pe_pk->serial[2] + ); } - // add to tlv tree - if (tlv) { - struct tlvdb *t = tlvdb_parse_multi(Result, *ResultLen); - tlvdb_add(tlv, t); + // 9F4B: Signed Dynamic Application Data + const struct tlv *sdad_tlv = tlvdb_get(tlv, 0x9f4b, NULL); + // DDA with internal authenticate OR fDDA with filled 0x9F4B tag (GPO result) + // EMV kernel3 v2.4, contactless book C-3, C.1., page 147 + if (sdad_tlv) { + PrintAndLog("\n* * Got Signed Dynamic Application Data (9F4B) form GPO. Maybe fDDA..."); + + const struct tlvdb *atc_db = emv_pki_recover_atc_ex(icc_pk, tlv, true); + if (!atc_db) { + PrintAndLog("ERROR: Can't recover IDN (ICC Dynamic Number)"); + emv_pk_free(pk); + emv_pk_free(issuer_pk); + emv_pk_free(icc_pk); + return 8; + } + + // 9f36 Application Transaction Counter (ATC) + const struct tlv *atc_tlv = tlvdb_get(atc_db, 0x9f36, NULL); + if(atc_tlv) { + PrintAndLog("\nATC (Application Transaction Counter) [%zu] %s", atc_tlv->len, sprint_hex_inrow(atc_tlv->value, atc_tlv->len)); + + const struct tlv *core_atc_tlv = tlvdb_get(tlv, 0x9f36, NULL); + if(tlv_equal(core_atc_tlv, atc_tlv)) { + PrintAndLog("ATC check OK."); + PrintAndLog("fDDA (fast DDA) verified OK."); + } else { + PrintAndLog("ERROR: fDDA verified, but ATC in the certificate and ATC in the record not the same."); + } + } else { + PrintAndLog("\nERROR: fDDA (fast DDA) verify error"); + emv_pk_free(pk); + emv_pk_free(issuer_pk); + emv_pk_free(icc_pk); + return 9; + } + } else { + struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv); + if (dac_db) { + const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL); + printf("SDA verified OK. (%02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]); + tlvdb_add(tlv, dac_db); + } else { + PrintAndLog("ERROR: SSAD verify error"); + emv_pk_free(pk); + emv_pk_free(issuer_pk); + emv_pk_free(icc_pk); + return 4; + } + + PrintAndLog("\n* Calc DDOL"); + const struct tlv *ddol_tlv = tlvdb_get(tlv, 0x9f49, NULL); + if (!ddol_tlv) { + ddol_tlv = &default_ddol_tlv; + PrintAndLog("DDOL [9f49] not found. Using default DDOL"); + } + + struct tlv *ddol_data_tlv = dol_process(ddol_tlv, tlv, 0); + if (!ddol_data_tlv) { + PrintAndLog("ERROR: Can't create DDOL TLV"); + emv_pk_free(pk); + emv_pk_free(issuer_pk); + emv_pk_free(icc_pk); + return 5; + } + + PrintAndLog("DDOL data[%d]: %s", ddol_data_tlv->len, sprint_hex(ddol_data_tlv->value, ddol_data_tlv->len)); + + PrintAndLog("\n* Internal Authenticate"); + int res = EMVInternalAuthenticate(true, (uint8_t *)ddol_data_tlv->value, ddol_data_tlv->len, buf, sizeof(buf), &len, &sw, NULL); + if (res) { + PrintAndLog("Internal Authenticate error(%d): %4x. Exit...", res, sw); + free(ddol_data_tlv); + emv_pk_free(pk); + emv_pk_free(issuer_pk); + emv_pk_free(icc_pk); + return 6; + } + + struct tlvdb *dda_db = NULL; + if (buf[0] == 0x80) { + if (len < 3 ) { + PrintAndLog("ERROR: Internal Authenticate format1 parsing error. length=%d", len); + } else { + // 9f4b Signed Dynamic Application Data + dda_db = tlvdb_fixed(0x9f4b, len - 2, buf + 2); + tlvdb_add(tlv, dda_db); + if (decodeTLV){ + PrintAndLog("* * Decode response format 1:"); + TLVPrintFromTLV(dda_db); + } + } + } else { + dda_db = tlvdb_parse_multi(buf, len); + if(!dda_db) { + PrintAndLog("ERROR: Can't parse Internal Authenticate result as TLV"); + free(ddol_data_tlv); + emv_pk_free(pk); + emv_pk_free(issuer_pk); + emv_pk_free(icc_pk); + return 7; + } + tlvdb_add(tlv, dda_db); + + if (decodeTLV) + TLVPrintFromTLV(dda_db); + } + + struct tlvdb *idn_db = emv_pki_recover_idn_ex(icc_pk, dda_db, ddol_data_tlv, true); + free(ddol_data_tlv); + if (!idn_db) { + PrintAndLog("ERROR: Can't recover IDN (ICC Dynamic Number)"); + tlvdb_free(dda_db); + emv_pk_free(pk); + emv_pk_free(issuer_pk); + emv_pk_free(icc_pk); + return 8; + } + tlvdb_free(dda_db); + + // 9f4c ICC Dynamic Number + const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL); + if(idn_tlv) { + PrintAndLog("\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len)); + PrintAndLog("DDA verified OK."); + tlvdb_add(tlv, idn_db); + tlvdb_free(idn_db); + } else { + PrintAndLog("\nERROR: DDA verify error"); + tlvdb_free(idn_db); + + emv_pk_free(pk); + emv_pk_free(issuer_pk); + emv_pk_free(icc_pk); + return 9; + } } + emv_pk_free(pk); + emv_pk_free(issuer_pk); + emv_pk_free(icc_pk); return 0; } +int trCDA(struct tlvdb *tlv, struct tlvdb *ac_tlv, struct tlv *pdol_data_tlv, struct tlv *ac_data_tlv) { + struct emv_pk *pk = get_ca_pk(tlv); + if (!pk) { + PrintAndLog("ERROR: Key not found. Exit."); + return 2; + } + + const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL); + if (!sda_tlv || sda_tlv->len < 1) { + PrintAndLog("ERROR: Can't find input list for Offline Data Authentication. Exit."); + emv_pk_free(pk); + return 3; + } + + struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv); + if (!issuer_pk) { + PrintAndLog("ERROR: Issuer certificate not found. Exit."); + emv_pk_free(pk); + return 2; + } + printf("Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n", + issuer_pk->rid[0], + issuer_pk->rid[1], + issuer_pk->rid[2], + issuer_pk->rid[3], + issuer_pk->rid[4], + issuer_pk->index, + issuer_pk->serial[0], + issuer_pk->serial[1], + issuer_pk->serial[2] + ); + + struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv); + if (!icc_pk) { + PrintAndLog("ERROR: ICC setrificate not found. Exit."); + emv_pk_free(pk); + emv_pk_free(issuer_pk); + return 2; + } + printf("ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n", + icc_pk->rid[0], + icc_pk->rid[1], + icc_pk->rid[2], + icc_pk->rid[3], + icc_pk->rid[4], + icc_pk->index, + icc_pk->serial[0], + icc_pk->serial[1], + icc_pk->serial[2] + ); + + struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv); + if (dac_db) { + const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL); + PrintAndLog("SSAD verified OK. (%02hhx:%02hhx)", dac_tlv->value[0], dac_tlv->value[1]); + tlvdb_add(tlv, dac_db); + } else { + PrintAndLog("ERROR: SSAD verify error"); + emv_pk_free(pk); + emv_pk_free(issuer_pk); + emv_pk_free(icc_pk); + return 4; + } + + PrintAndLog("\n* * Check Signed Dynamic Application Data (SDAD)"); + struct tlvdb *idn_db = emv_pki_perform_cda_ex(icc_pk, tlv, ac_tlv, + pdol_data_tlv, // pdol + ac_data_tlv, // cdol1 + NULL, // cdol2 + true); + if (idn_db) { + const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL); + PrintAndLog("\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len)); + PrintAndLog("CDA verified OK."); + tlvdb_add(tlv, idn_db); + } else { + PrintAndLog("\nERROR: CDA verify error"); + } + + emv_pk_free(pk); + emv_pk_free(issuer_pk); + emv_pk_free(icc_pk); + return 0; +}