X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/0fb3e45541fb31b1a09070917b02b81e763777d3..5a28b51036943af40b8036ce4f1e4afe42ad8106:/client/emv/emvcore.c diff --git a/client/emv/emvcore.c b/client/emv/emvcore.c index 36438413..04d8f44c 100644 --- a/client/emv/emvcore.c +++ b/client/emv/emvcore.c @@ -9,6 +9,11 @@ //----------------------------------------------------------------------------- #include "emvcore.h" +#include "emvjson.h" +#include "util_posix.h" +#ifdef WITH_SMARTCARD +#include "cmdsmartcard.h" +#endif // Got from here. Thanks) // https://eftlab.co.uk/index.php/site-map/knowledge-base/211-emv-aid-rid-pix @@ -16,7 +21,14 @@ static const char *PSElist [] = { "325041592E5359532E4444463031", // 2PAY.SYS.DDF01 - Visa Proximity Payment System Environment - PPSE "315041592E5359532E4444463031" // 1PAY.SYS.DDF01 - Visa Payment System Environment - PSE }; -static const size_t PSElistLen = sizeof(PSElist)/sizeof(char*); +//static const size_t PSElistLen = sizeof(PSElist)/sizeof(char*); + +char *TransactionTypeStr[] = { + "MSD", + "VSDC", + "qVCDCMCHIP", + "CDA" +}; typedef struct { enum CardPSVendor vendor; @@ -221,15 +233,18 @@ struct tlvdb *GetdCVVRawFromTrack2(const struct tlv *track2) { return tlvdb_fixed(0x02, dCVVlen, dCVV); } -int EMVExchangeEx(bool ActivateField, bool LeaveFieldON, sAPDU apdu, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) { +int EMVExchangeEx(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, sAPDU apdu, bool IncludeLe, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) { uint8_t data[APDU_RES_LEN] = {0}; *ResultLen = 0; if (sw) *sw = 0; uint16_t isw = 0; + int res = 0; - if (ActivateField) + if (ActivateField){ DropField(); + msleep(50); + } // COMPUTE APDU memcpy(data, &apdu, 5); @@ -237,27 +252,48 @@ int EMVExchangeEx(bool ActivateField, bool LeaveFieldON, sAPDU apdu, uint8_t *Re memcpy(&data[5], apdu.data, apdu.Lc); if (APDULogging) - PrintAndLog(">>>> %s", sprint_hex(data, 6 + apdu.Lc)); - - // 6 byes + data = INS + CLA + P1 + P2 + Lc + + Le - int res = ExchangeAPDU14a(data, 6 + apdu.Lc, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen); - - if (res) { - return res; + PrintAndLog(">>>> %s", sprint_hex(data, (IncludeLe?6:5) + apdu.Lc)); + + switch(channel) { + case ECC_CONTACTLESS: + // 6 byes + data = INS + CLA + P1 + P2 + Lc + + Le(?IncludeLe) + res = ExchangeAPDU14a(data, (IncludeLe?6:5) + apdu.Lc, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen); + if (res) { + return res; + } + break; + case ECC_CONTACT: + //int ExchangeAPDUSC(uint8_t *datain, int datainlen, bool activateCard, bool leaveSignalON, uint8_t *dataout, int maxdataoutlen, int *dataoutlen); +#ifdef WITH_SMARTCARD + res = ExchangeAPDUSC(data, (IncludeLe?6:5) + apdu.Lc, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen); + if (res) { + return res; + } +#endif + break; } if (APDULogging) PrintAndLog("<<<< %s", sprint_hex(Result, *ResultLen)); + if (*ResultLen < 2) { + return 200; + } + *ResultLen -= 2; isw = Result[*ResultLen] * 0x0100 + Result[*ResultLen + 1]; if (sw) *sw = isw; if (isw != 0x9000) { - if (APDULogging) - PrintAndLog("APDU(%02x%02x) ERROR: [%4X] %s", apdu.CLA, apdu.INS, isw, GetAPDUCodeDescription(*sw >> 8, *sw & 0xff)); - return 5; + if (APDULogging) { + if (*sw >> 8 == 0x61) { + PrintAndLog("APDU chaining len:%02x -->", *sw & 0xff); + } else { + PrintAndLog("APDU(%02x%02x) ERROR: [%4X] %s", apdu.CLA, apdu.INS, isw, GetAPDUCodeDescription(*sw >> 8, *sw & 0xff)); + return 5; + } + } } // add to tlv tree @@ -269,15 +305,15 @@ int EMVExchangeEx(bool ActivateField, bool LeaveFieldON, sAPDU apdu, uint8_t *Re 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, Result, MaxResultLen, ResultLen, sw, tlv); +int EMVExchange(EMVCommandChannel channel, bool LeaveFieldON, sAPDU apdu, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) { + return EMVExchangeEx(channel, 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}, Result, MaxResultLen, ResultLen, sw, tlv); +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) { + return EMVExchangeEx(channel, 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) { +int EMVSelectPSE(EMVCommandChannel channel, 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; int len = 0; @@ -294,19 +330,19 @@ int EMVSelectPSE(bool ActivateField, bool LeaveFieldON, uint8_t PSENum, uint8_t } // select - res = EMVSelect(ActivateField, LeaveFieldON, buf, len, Result, MaxResultLen, ResultLen, sw, NULL); + res = EMVSelect(channel, ActivateField, LeaveFieldON, buf, len, Result, MaxResultLen, ResultLen, sw, NULL); return res; } -int EMVSearchPSE(bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvdb *tlv) { +int EMVSearchPSE(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvdb *tlv) { uint8_t data[APDU_RES_LEN] = {0}; size_t datalen = 0; uint16_t sw = 0; int res; // select PPSE - res = EMVSelectPSE(ActivateField, true, 2, data, sizeof(data), &datalen, &sw); + res = EMVSelectPSE(channel, ActivateField, true, 2, data, sizeof(data), &datalen, &sw); if (!res){ struct tlvdb *t = NULL; @@ -320,7 +356,7 @@ int EMVSearchPSE(bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct t while (ttmp) { const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x4f, NULL); if (tgAID) { - res = EMVSelect(false, true, (uint8_t *)tgAID->value, tgAID->len, data, sizeof(data), &datalen, &sw, tlv); + res = EMVSelect(channel, false, true, (uint8_t *)tgAID->value, tgAID->len, data, sizeof(data), &datalen, &sw, tlv); // retry if error and not returned sw error if (res && res != 5) { @@ -367,7 +403,7 @@ int EMVSearchPSE(bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct t return res; } -int EMVSearch(bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvdb *tlv) { +int EMVSearch(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvdb *tlv) { uint8_t aidbuf[APDU_AID_LEN] = {0}; int aidlen = 0; uint8_t data[APDU_RES_LEN] = {0}; @@ -378,15 +414,15 @@ int EMVSearch(bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvd int retrycnt = 0; for(int i = 0; i < AIDlistLen; i ++) { 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); + res = EMVSelect(channel, (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) { if (++retrycnt < 3){ i--; } else { - // card select error, proxmark error - if (res == 1) { - PrintAndLog("Exit..."); + // (1) - card select error, proxmark error OR (200) - result length = 0 + if (res == 1 || res == 200) { + PrintAndLogEx(WARNING, "Exit..."); return 1; } @@ -448,48 +484,464 @@ int EMVSelectApplication(struct tlvdb *tlv, uint8_t *AID, size_t *AIDlen) { return 0; } -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) { - return EMVExchange(LeaveFieldON, (sAPDU){0x80, 0xa8, 0x00, 0x00, PDOLLen, PDOL}, Result, MaxResultLen, ResultLen, sw, tlv); +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) { + return EMVExchange(channel, LeaveFieldON, (sAPDU){0x80, 0xa8, 0x00, 0x00, PDOLLen, PDOL}, Result, MaxResultLen, ResultLen, sw, tlv); } -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) { - return EMVExchange(LeaveFieldON, (sAPDU){0x00, 0xb2, SFIrec, (SFI << 3) | 0x04, 0, NULL}, Result, MaxResultLen, ResultLen, sw, tlv); +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) { + int res = EMVExchange(channel, LeaveFieldON, (sAPDU){0x00, 0xb2, SFIrec, (SFI << 3) | 0x04, 0, NULL}, Result, MaxResultLen, ResultLen, sw, tlv); + if (*sw == 0x6700) { + PrintAndLogEx(INFO, ">>> trying to reissue command withouth Le..."); + res = EMVExchangeEx(channel, false, LeaveFieldON, (sAPDU){0x00, 0xb2, SFIrec, (SFI << 3) | 0x04, 0, NULL}, false, Result, MaxResultLen, ResultLen, sw, tlv); + } + 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 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) { + return EMVExchange(channel, 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) { - return EMVExchange(LeaveFieldON, (sAPDU){0x00, 0x84, 0x00, 0x00, 0x00, NULL}, Result, MaxResultLen, ResultLen, sw, tlv); +int EMVGenerateChallenge(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv) { + int res = EMVExchange(channel, LeaveFieldON, (sAPDU){0x00, 0x84, 0x00, 0x00, 0x00, NULL}, Result, MaxResultLen, ResultLen, sw, tlv); + if (*sw == 0x6700) { + PrintAndLogEx(INFO, ">>> trying to reissue command withouth Le..."); + res = EMVExchangeEx(channel, false, LeaveFieldON, (sAPDU){0x00, 0x84, 0x00, 0x00, 0x00, NULL}, false, Result, MaxResultLen, ResultLen, sw, tlv); + } + return res; } -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); +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) { + return EMVExchange(channel, LeaveFieldON, (sAPDU){0x00, 0x88, 0x00, 0x00, DDOLLen, DDOL}, Result, MaxResultLen, ResultLen, sw, tlv); +} + +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) { + return EMVExchange(channel, LeaveFieldON, (sAPDU){0x80, 0x2a, 0x8e, 0x80, UDOLlen, UDOL}, Result, MaxResultLen, ResultLen, sw, tlv); } // Authentication -int trSDA(uint8_t *AID, size_t AIDlen, struct tlvdb *tlv) { - if (AIDlen < 5) - return 1; +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; + } - // Get public key index (0x8F) - //int PubKeyIndx = 0; + 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; + } + + 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; + } - // Get public key from key storage - // GetPublicKey(AID(0..5), PubKeyIndx) + 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; + } - // Processing of Issuer Public Key Certificate (0x90) - //Certificate = + emv_pk_free(issuer_pk); + emv_pk_free(pk); + return 0; +} + +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 trDDA(EMVCommandChannel channel, 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; + } + + 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; + } + + 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] + ); + } + + // 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(channel, true, (uint8_t *)ddol_data_tlv->value, ddol_data_tlv->len, buf, sizeof(buf), &len, &sw, NULL); + if (res) { + PrintAndLogEx(WARNING, "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; + } + } - // check issuer public key certificate + 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; + } - // Verification of Signed Static Application Data (SSAD) (0x93) + 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; +} + +int RecoveryCertificates(struct tlvdb *tlvRoot, json_t *root) { - // get 9F4A Static Data Authentication Tag List + struct emv_pk *pk = get_ca_pk(tlvRoot); + if (!pk) { + PrintAndLog("ERROR: Key not found. Exit."); + return 1; + } + + struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlvRoot); + if (!issuer_pk) { + emv_pk_free(pk); + PrintAndLog("WARNING: Issuer certificate not found. Exit."); + return 2; + } + 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] + ); + + JsonSaveBufAsHex(root, "$.ApplicationData.RID", issuer_pk->rid, 5); + + char *issuer_pk_c = emv_pk_dump_pk(issuer_pk); + JsonSaveStr(root, "$.ApplicationData.IssuerPublicKeyDec", issuer_pk_c); + JsonSaveBufAsHex(root, "$.ApplicationData.IssuerPublicKeyModulus", issuer_pk->modulus, issuer_pk->mlen); + free(issuer_pk_c); + + struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlvRoot, NULL); + if (!icc_pk) { + emv_pk_free(pk); + emv_pk_free(issuer_pk); + PrintAndLog("WARNING: ICC certificate not found. Exit."); + return 2; + } + printf("ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n", + icc_pk->rid[0], + icc_pk->rid[1], + icc_pk->rid[2], + icc_pk->rid[3], + icc_pk->rid[4], + icc_pk->index, + icc_pk->serial[0], + icc_pk->serial[1], + icc_pk->serial[2] + ); - // set Data Auth Code (9F45) from SSAD + char *icc_pk_c = emv_pk_dump_pk(icc_pk); + JsonSaveStr(root, "$.ApplicationData.ICCPublicKeyDec", icc_pk_c); + JsonSaveBufAsHex(root, "$.ApplicationData.ICCPublicKeyModulus", icc_pk->modulus, icc_pk->mlen); + free(issuer_pk_c); return 0; } -