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1 //-----------------------------------------------------------------------------
2 // Copyright (C) 2017 Merlok
3 //
4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
5 // at your option, any later version. See the LICENSE.txt file for the text of
6 // the license.
7 //-----------------------------------------------------------------------------
8 // EMV core functionality
9 //-----------------------------------------------------------------------------
10
11 #ifndef EMVCORE_H__
12 #define EMVCORE_H__
13
14 #include <stdint.h>
15 #include <stdbool.h>
16 #include "tlv.h"
17 #include "jansson.h"
18
19 // maximum APDU lengths. Long APDUs not yet supported/needed
20 #define APDU_DATA_LEN 255
21 #define APDU_COMMAND_LEN (4 + 1 + APDU_DATA_LEN + 1)
22 #define APDU_RESPONSE_LEN (256 + 2)
23
24 typedef enum {
25 ECC_CONTACTLESS,
26 ECC_CONTACT
27 } EMVCommandChannel;
28
29 enum TransactionType {
30 TT_MSD,
31 TT_VSDC, // not standart for contactless!!!!
32 TT_QVSDCMCHIP,
33 TT_CDA,
34 };
35 extern char *TransactionTypeStr[];
36
37 enum CardPSVendor {
38 CV_NA,
39 CV_VISA,
40 CV_MASTERCARD,
41 CV_AMERICANEXPRESS,
42 CV_JCB,
43 CV_CB,
44 CV_SWITCH,
45 CV_DINERS,
46 CV_OTHER,
47 };
48 extern enum CardPSVendor GetCardPSVendor(uint8_t * AID, size_t AIDlen);
49
50 extern void DropFieldEx(EMVCommandChannel channel);
51
52 extern bool TLVPrintFromBuffer(uint8_t *data, int datalen);
53 extern void TLVPrintFromTLV(struct tlvdb *tlv);
54 extern void TLVPrintFromTLVLev(struct tlvdb *tlv, int level);
55 extern void TLVPrintAIDlistFromSelectTLV(struct tlvdb *tlv);
56
57 extern struct tlvdb *GetPANFromTrack2(const struct tlv *track2);
58 extern struct tlvdb *GetdCVVRawFromTrack2(const struct tlv *track2);
59
60 extern void SetAPDULogging(bool logging);
61
62 // exchange
63 extern int EMVExchangeEx(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t *apdu, int apdu_len, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv);
64
65 // search application
66 extern int EMVSearchPSE(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t PSENum, bool decodeTLV, struct tlvdb *tlv);
67 extern int EMVSearch(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvdb *tlv);
68 extern int EMVSelectPSE(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t PSENum, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw);
69 extern 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);
70 // select application
71 extern int EMVSelectApplication(struct tlvdb *tlv, uint8_t *AID, size_t *AIDlen);
72 // Get Processing Options
73 extern 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);
74 extern 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);
75 // AC
76 extern int EMVGenerateChallenge(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv);
77 extern 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);
78 // DDA
79 extern 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);
80 // Mastercard
81 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);
82 // Auth
83 extern int trSDA(struct tlvdb *tlv);
84 extern int trDDA(EMVCommandChannel channel, bool decodeTLV, struct tlvdb *tlv);
85 extern int trCDA(struct tlvdb *tlv, struct tlvdb *ac_tlv, struct tlv *pdol_data_tlv, struct tlv *ac_data_tlv);
86
87 extern int RecoveryCertificates(struct tlvdb *tlvRoot, json_t *root);
88
89 extern struct emv_pk *get_ca_pk(struct tlvdb *db);
90 #endif
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