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added check channel

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This commit is contained in:
merlokk 2021-07-09 18:03:34 +03:00
parent da9fff22c9
commit f606cc5fb5
3 changed files with 85 additions and 0 deletions
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75
client/src/mifare/desfiresecurechan.c
View file

@ -20,8 +20,42 @@
#include "crc16.h" // crc16 ccitt
#include "crc32.h"
#include "commonutil.h"
#include "protocols.h"
#include "mifare/desfire_crypto.h"
AllowedChannelModesS AllowedChannelModes[] = {
{MFDES_CREATE_APPLICATION, DACd40, DCCNative, DCMPlain},
{MFDES_DELETE_APPLICATION, DACd40, DCCNative, DCMPlain},
{MFDES_GET_APPLICATION_IDS, DACd40, DCCNative, DCMPlain},
{MFDES_GET_DF_NAMES, DACd40, DCCNative, DCMPlain},
{MFDES_READ_DATA, DACd40, DCCNative, DCMMACed},
{MFDES_WRITE_DATA, DACd40, DCCNative, DCMMACed},
{MFDES_GET_VALUE, DACd40, DCCNative, DCMMACed},
{MFDES_CREDIT, DACd40, DCCNative, DCMMACed},
{MFDES_DEBIT, DACd40, DCCNative, DCMMACed},
{MFDES_LIMITED_CREDIT, DACd40, DCCNative, DCMMACed},
{MFDES_READ_RECORDS, DACd40, DCCNative, DCMMACed},
{MFDES_WRITE_RECORD, DACd40, DCCNative, DCMMACed},
{MFDES_UPDATE_RECORD1, DACd40, DCCNative, DCMMACed},
{MFDES_UPDATE_RECORD2, DACd40, DCCNativeISO, DCMMACed},
{MFDES_INIT_KEY_SETTINGS, DACd40, DCCNative, DCMMACed},
{MFDES_FINALIZE_KEY_SETTINGS, DACd40, DCCNative, DCMMACed},
{MFDES_ROLL_KEY_SETTINGS, DACd40, DCCNative, DCMMACed},
{MFDES_COMMIT_READER_ID, DACd40, DCCNative, DCMMACed},
{MFDES_GET_UID, DACd40, DCCNative, DCMEncrypted},
{MFDES_READ_DATA, DACd40, DCCNative, DCMEncrypted},
{MFDES_WRITE_DATA, DACd40, DCCNative, DCMEncrypted},
{MFDES_CREATE_APPLICATION, DACEV1, DCCNative, DCMMACed},
{MFDES_DELETE_APPLICATION, DACEV1, DCCNative, DCMMACed},
{MFDES_GET_APPLICATION_IDS, DACEV1, DCCNative, DCMMACed},
{MFDES_GET_DF_NAMES, DACEV1, DCCNative, DCMMACed},
{MFDES_GET_UID, DACEV1, DCCNative, DCMEncrypted},
};
static void DesfireSecureChannelEncodeD40(DesfireContext *ctx, uint8_t cmd, uint8_t *srcdata, size_t srcdatalen, uint8_t *dstdata, size_t *dstdatalen) {
memcpy(dstdata, srcdata, srcdatalen);
*dstdatalen = srcdatalen;
@ -207,3 +241,44 @@ void DesfireSecureChannelDecode(DesfireContext *ctx, uint8_t *srcdata, size_t sr
break;
}
}
bool PrintChannelModeWarning(uint8_t cmd, DesfireSecureChannel secureChannel, DesfireCommandSet cmdSet, DesfireCommunicationMode commMode) {
if (commMode == DCMNone) {
PrintAndLogEx(WARNING, "Communication mode can't be NONE. command: %02x", cmd);
return false;
}
// no security set
if (secureChannel == DACNone)
return true;
bool found = false;
for (int i = 0; i < ARRAY_LENGTH(AllowedChannelModes); i++)
if (AllowedChannelModes[i].cmd == cmd) {
// full compare
if (AllowedChannelModes[i].secureChannel == secureChannel &&
(AllowedChannelModes[i].cmdSet == cmdSet || (AllowedChannelModes[i].cmdSet == DCCNative && cmdSet == DCCNativeISO)) &&
AllowedChannelModes[i].commMode == commMode){
found = true;
break;
}
// ev1 plain and mac are the same
if (AllowedChannelModes[i].secureChannel == secureChannel &&
AllowedChannelModes[i].secureChannel == DACEV1 &&
(AllowedChannelModes[i].cmdSet == cmdSet || (AllowedChannelModes[i].cmdSet == DCCNative && cmdSet == DCCNativeISO)) &&
(commMode == DCMPlain || commMode == DCMMACed)){
found = true;
break;
}
}
if (!found)
PrintAndLogEx(WARNING, "Wrong communication mode. Check settings. command: %02x", cmd);
return found;
}

8
client/src/mifare/desfiresecurechan.h
View file

@ -19,8 +19,16 @@
#include "mifare/desfire_crypto.h"
#include "mifare/mifare4.h"
typedef struct {
uint8_t cmd;
DesfireSecureChannel secureChannel;
DesfireCommandSet cmdSet;
DesfireCommunicationMode commMode;
} AllowedChannelModesS;
void DesfireSecureChannelEncode(DesfireContext *ctx, uint8_t cmd, uint8_t *srcdata, size_t srcdatalen, uint8_t *dstdata, size_t *dstdatalen);
void DesfireSecureChannelDecode(DesfireContext *ctx, uint8_t *srcdata, size_t srcdatalen, uint8_t respcode, uint8_t *dstdata, size_t *dstdatalen);
bool PrintChannelModeWarning(uint8_t cmd, DesfireSecureChannel secureChannel, DesfireCommandSet cmdSet, DesfireCommunicationMode commMode);
#endif // __DESFIRESECURECHAN_H

2
include/protocols.h
View file

@ -436,6 +436,7 @@ ISO 7816-4 Basic interindustry commands. For command APDU's.
#define MFDES_GET_FILE_IDS 0x6F
#define MFDES_ABORT_TRANSACTION 0xA7
#define MFDES_ADDITIONAL_FRAME 0xAF
#define MFDES_UPDATE_RECORD1 0xBA
#define MFDES_READ_RECORDS 0xBB
#define MFDES_READ_DATA 0xBD
#define MFDES_CREATE_CYCLIC_RECORD_FILE 0xC0
@ -451,6 +452,7 @@ ISO 7816-4 Basic interindustry commands. For command APDU's.
#define MFDES_CREATE_STD_DATA_FILE 0xCD
#define MFDES_CREATE_TRANS_MAC_FILE 0xCE
#define MFDES_DELETE_APPLICATION 0xDA
#define MFDES_UPDATE_RECORD2 0xDB
#define MFDES_DEBIT 0xDC
#define MFDES_DELETE_FILE 0xDF
#define MFDES_CLEAR_RECORD_FILE 0xEB