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Merge pull request #1419 from merlokk/desf_ev2

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Desfire ev2 channel
This commit is contained in:
Oleg Moiseenko 2021-08-04 19:44:56 +03:00 • committed by GitHub
commit d847aed5a6
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 123 additions and 75 deletions
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33
client/src/cmdhfmfdes.c
View file

@ -2316,6 +2316,7 @@ static int CmdHF14ADesSelectApp(const char *Cmd) {
bool idsoidpresent = (res == 1);
if (res == 2) {
PrintAndLogEx(ERR, "ISO ID for EF or DF must have 2 bytes length");
CLIParserFree(ctx);
return PM3_EINVARG;
}
@ -2843,7 +2844,7 @@ static int CmdHF14ADesCreateApp(const char *Cmd) {
DesfireContext dctx;
int securechann = defaultSecureChannel;
uint32_t appid = 0x000000;
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 12, &securechann, DCMPlain, &appid);
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 12, &securechann, DCMMACed, &appid);
if (res) {
CLIParserFree(ctx);
return res;
@ -3007,7 +3008,7 @@ static int CmdHF14ADesDeleteApp(const char *Cmd) {
DesfireContext dctx;
int securechann = defaultSecureChannel;
uint32_t appid = 0x000000;
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMPlain, &appid);
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMMACed, &appid);
if (res) {
CLIParserFree(ctx);
return res;
@ -3342,7 +3343,7 @@ static int CmdHF14ADesGetKeyVersions(const char *Cmd) {
DesfireContext dctx;
int securechann = defaultSecureChannel;
uint32_t appid = 0x000000;
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMPlain, &appid); // DCMMACed
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMMACed, &appid);
if (res) {
CLIParserFree(ctx);
return res;
@ -3804,7 +3805,7 @@ static int CmdHF14ADesGetFileSettings(const char *Cmd) {
DesfireContext dctx;
int securechann = defaultSecureChannel;
uint32_t appid = 0x000000;
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMPlain, &appid);
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMMACed, &appid);
if (res) {
CLIParserFree(ctx);
return res;
@ -4137,7 +4138,7 @@ static int CmdHF14ADesCreateFile(const char *Cmd) {
DesfireContext dctx;
int securechann = defaultSecureChannel;
uint32_t appid = 0x000000;
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMPlain, &appid);
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMMACed, &appid);
if (res) {
CLIParserFree(ctx);
return res;
@ -4278,7 +4279,7 @@ static int CmdHF14ADesCreateValueFile(const char *Cmd) {
DesfireContext dctx;
int securechann = defaultSecureChannel;
uint32_t appid = 0x000000;
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMPlain, &appid);
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMMACed, &appid);
if (res) {
CLIParserFree(ctx);
return res;
@ -4411,7 +4412,7 @@ static int CmdHF14ADesCreateRecordFile(const char *Cmd) {
DesfireContext dctx;
int securechann = defaultSecureChannel;
uint32_t appid = 0x000000;
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMPlain, &appid);
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMMACed, &appid);
if (res) {
CLIParserFree(ctx);
return res;
@ -4632,7 +4633,7 @@ static int CmdHF14ADesDeleteFile(const char *Cmd) {
DesfireContext dctx;
int securechann = defaultSecureChannel;
uint32_t appid = 0x000000;
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMPlain, &appid);
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMMACed, &appid);
if (res) {
CLIParserFree(ctx);
return res;
@ -4709,7 +4710,7 @@ static int CmdHF14ADesValueOperations(const char *Cmd) {
DesfireContext dctx;
int securechann = defaultSecureChannel;
uint32_t appid = 0x000000;
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMPlain, &appid);
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMMACed, &appid);
if (res) {
CLIParserFree(ctx);
return res;
@ -4869,7 +4870,7 @@ static int CmdHF14ADesClearRecordFile(const char *Cmd) {
DesfireContext dctx;
int securechann = defaultSecureChannel;
uint32_t appid = 0x000000;
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMPlain, &appid);
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMMACed, &appid);
if (res) {
CLIParserFree(ctx);
return res;
@ -4921,7 +4922,7 @@ static int DesfileReadFileAndPrint(DesfireContext *dctx, uint8_t fnum, int filet
FileSettingsS fsettings;
DesfireCommunicationMode commMode = dctx->commMode;
DesfireSetCommMode(dctx, DCMPlain);
DesfireSetCommMode(dctx, DCMMACed);
res = DesfireGetFileSettingsStruct(dctx, fnum, &fsettings);
DesfireSetCommMode(dctx, commMode);
@ -5105,7 +5106,7 @@ static int CmdHF14ADesReadData(const char *Cmd) {
DesfireContext dctx;
int securechann = defaultSecureChannel;
uint32_t appid = 0x000000;
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMPlain, &appid);
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMMACed, &appid);
if (res) {
CLIParserFree(ctx);
return res;
@ -5268,7 +5269,7 @@ static int CmdHF14ADesWriteData(const char *Cmd) {
FileSettingsS fsettings;
DesfireCommunicationMode commMode = dctx.commMode;
DesfireSetCommMode(&dctx, DCMPlain);
DesfireSetCommMode(&dctx, DCMMACed);
res = DesfireGetFileSettingsStruct(&dctx, fnum, &fsettings);
DesfireSetCommMode(&dctx, commMode);
@ -5431,7 +5432,7 @@ static int CmdHF14ADesLsFiles(const char *Cmd) {
DesfireContext dctx;
int securechann = defaultSecureChannel;
uint32_t appid = 0x000000;
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMPlain, &appid);
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMMACed, &appid);
if (res) {
CLIParserFree(ctx);
return res;
@ -5503,7 +5504,7 @@ static int CmdHF14ADesLsApp(const char *Cmd) {
DesfireContext dctx;
int securechann = defaultSecureChannel;
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 0, &securechann, DCMPlain, NULL);
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 0, &securechann, (noauth) ? DCMPlain : DCMMACed, NULL);
if (res) {
CLIParserFree(ctx);
return res;
@ -5566,7 +5567,7 @@ static int CmdHF14ADesDump(const char *Cmd) {
DesfireContext dctx;
int securechann = defaultSecureChannel;
uint32_t appid = 0x000000;
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, DCMPlain, &appid);
int res = CmdDesGetSessionParameters(ctx, &dctx, 3, 4, 5, 6, 7, 8, 9, 10, 11, &securechann, (noauth) ? DCMPlain : DCMMACed, &appid);
if (res) {
CLIParserFree(ctx);
return res;

3
client/src/mifare/desfirecore.c
View file

@ -1822,8 +1822,7 @@ int DesfireFillFileList(DesfireContext *dctx, FileListS FileList, size_t *filesc
isoindx++;
}
}
if (isoindx > 0)
isoindx--;
if (isoindx * 2 != buflen)
PrintAndLogEx(WARNING, "Wrong ISO ID list length. must be %zu but %zu", buflen, isoindx * 2);
} else {

130
client/src/mifare/desfiresecurechan.c
View file

@ -42,26 +42,22 @@ static bool CommandCanUseAnyChannel(uint8_t cmd) {
static const AllowedChannelModesS AllowedChannelModes[] = {
{MFDES_SELECT_APPLICATION, DACd40, DCCNative, DCMPlain},
{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_GET_KEY_SETTINGS, DACd40, DCCNative, DCMPlain},
{MFDES_GET_KEY_VERSION, DACd40, DCCNative, DCMPlain},
{MFDES_GET_FREE_MEMORY, DACd40, DCCNative, DCMPlain},
{MFDES_CREATE_STD_DATA_FILE, DACd40, DCCNative, DCMPlain},
{MFDES_CREATE_BACKUP_DATA_FILE, DACd40, DCCNative, DCMPlain},
{MFDES_CREATE_VALUE_FILE, DACd40, DCCNative, DCMPlain},
{MFDES_CREATE_LINEAR_RECORD_FILE, DACd40, DCCNative, DCMPlain},
{MFDES_CREATE_CYCLIC_RECORD_FILE, DACd40, DCCNative, DCMPlain},
{MFDES_GET_VALUE, DACd40, DCCNative, DCMPlain},
{MFDES_CREDIT, DACd40, DCCNative, DCMPlain},
{MFDES_LIMITED_CREDIT, DACd40, DCCNative, DCMPlain},
{MFDES_DEBIT, DACd40, DCCNative, DCMPlain},
{MFDES_COMMIT_TRANSACTION, DACd40, DCCNative, DCMPlain},
{MFDES_CLEAR_RECORD_FILE, DACd40, DCCNative, DCMPlain},
{MFDES_GET_FILE_SETTINGS, DACd40, DCCNative, DCMPlain},
{MFDES_CREATE_APPLICATION, DACd40, DCCNative, DCMMACed},
{MFDES_DELETE_APPLICATION, DACd40, DCCNative, DCMMACed},
{MFDES_GET_APPLICATION_IDS, DACd40, DCCNative, DCMMACed},
{MFDES_GET_DF_NAMES, DACd40, DCCNative, DCMMACed},
{MFDES_GET_KEY_SETTINGS, DACd40, DCCNative, DCMMACed},
{MFDES_GET_KEY_VERSION, DACd40, DCCNative, DCMMACed},
{MFDES_GET_FREE_MEMORY, DACd40, DCCNative, DCMMACed},
{MFDES_CREATE_STD_DATA_FILE, DACd40, DCCNative, DCMMACed},
{MFDES_CREATE_BACKUP_DATA_FILE, DACd40, DCCNative, DCMMACed},
{MFDES_CREATE_VALUE_FILE, DACd40, DCCNative, DCMMACed},
{MFDES_CREATE_LINEAR_RECORD_FILE, DACd40, DCCNative, DCMMACed},
{MFDES_CREATE_CYCLIC_RECORD_FILE, DACd40, DCCNative, DCMMACed},
{MFDES_COMMIT_TRANSACTION, DACd40, DCCNative, DCMMACed},
{MFDES_CLEAR_RECORD_FILE, DACd40, DCCNative, DCMMACed},
{MFDES_GET_FILE_SETTINGS, DACd40, DCCNative, DCMMACed},
{MFDES_GET_VALUE, DACd40, DCCNative, DCMMACed},
{MFDES_CREDIT, DACd40, DCCNative, DCMMACed},
{MFDES_DEBIT, DACd40, DCCNative, DCMMACed},
@ -85,10 +81,10 @@ static const AllowedChannelModesS AllowedChannelModes[] = {
{MFDES_CHANGE_KEY, DACd40, DCCNative, DCMEncryptedPlain},
{MFDES_CHANGE_KEY_EV2, DACd40, DCCNative, DCMEncryptedPlain},
{MFDES_GET_KEY_VERSION, DACEV1, DCCNative, DCMPlain},
{MFDES_GET_FREE_MEMORY, DACEV1, DCCNative, DCMPlain},
{MFDES_SELECT_APPLICATION, DACEV1, DCCNative, DCMPlain},
{MFDES_GET_KEY_VERSION, DACEV1, DCCNative, DCMMACed},
{MFDES_GET_FREE_MEMORY, DACEV1, DCCNative, DCMMACed},
{MFDES_CREATE_APPLICATION, DACEV1, DCCNative, DCMMACed},
{MFDES_DELETE_APPLICATION, DACEV1, DCCNative, DCMMACed},
{MFDES_GET_APPLICATION_IDS, DACEV1, DCCNative, DCMMACed},
@ -147,6 +143,49 @@ static uint8_t DesfireGetCmdHeaderLen(uint8_t cmd) {
return 0;
}
static const uint8_t EV1D40TransmitMAC[] = {
MFDES_WRITE_DATA,
MFDES_CREDIT,
MFDES_LIMITED_CREDIT,
MFDES_DEBIT,
MFDES_WRITE_RECORD,
MFDES_UPDATE_RECORD,
MFDES_COMMIT_READER_ID,
MFDES_INIT_KEY_SETTINGS,
MFDES_ROLL_KEY_SETTINGS,
MFDES_FINALIZE_KEY_SETTINGS,
};
static bool DesfireEV1D40TransmitMAC(DesfireContext *ctx, uint8_t cmd) {
if (ctx->secureChannel != DACd40 && ctx->secureChannel != DACEV1)
return true;
for (int i = 0; i < ARRAY_LENGTH(EV1D40TransmitMAC); i++)
if (EV1D40TransmitMAC[i] == cmd)
return true;
return false;
}
static const uint8_t D40ReceiveMAC[] = {
MFDES_READ_DATA,
MFDES_READ_DATA2,
MFDES_READ_RECORDS,
MFDES_READ_RECORDS2,
MFDES_GET_VALUE,
};
static bool DesfireEV1D40ReceiveMAC(DesfireContext *ctx, uint8_t cmd) {
if (ctx->secureChannel != DACd40)
return true;
for (int i = 0; i < ARRAY_LENGTH(D40ReceiveMAC); i++)
if (D40ReceiveMAC[i] == cmd)
return true;
return false;
}
static void DesfireSecureChannelEncodeD40(DesfireContext *ctx, uint8_t cmd, uint8_t *srcdata, size_t srcdatalen, uint8_t *dstdata, size_t *dstdatalen) {
uint8_t data[1024] = {0};
size_t rlen = 0;
@ -168,9 +207,10 @@ static void DesfireSecureChannelEncodeD40(DesfireContext *ctx, uint8_t cmd, uint
uint8_t mac[32] = {0};
DesfireCryptoEncDecEx(ctx, DCOSessionKeyMac, data, srcmaclen, NULL, true, true, mac);
memcpy(dstdata, srcdata, srcdatalen);
if (DesfireEV1D40TransmitMAC(ctx, cmd)) {
memcpy(&dstdata[srcdatalen], mac, DesfireGetMACLength(ctx));
*dstdatalen = rlen;
}
} else if (ctx->commMode == DCMEncrypted) {
if (srcdatalen <= hdrlen)
return;
@ -216,7 +256,7 @@ static void DesfireSecureChannelEncodeEV1(DesfireContext *ctx, uint8_t cmd, uint
memcpy(dstdata, srcdata, srcdatalen);
*dstdatalen = srcdatalen;
if (srcdatalen > hdrlen && ctx->commMode == DCMMACed) {
if (ctx->commMode == DCMMACed && DesfireEV1D40TransmitMAC(ctx, cmd)) {
memcpy(&dstdata[srcdatalen], cmac, DesfireGetMACLength(ctx));
*dstdatalen = srcdatalen + DesfireGetMACLength(ctx);
}
@ -252,30 +292,28 @@ static void DesfireSecureChannelEncodeEV2(DesfireContext *ctx, uint8_t cmd, uint
uint8_t hdrlen = DesfireGetCmdHeaderLen(cmd);
if (ctx->commMode == DCMPlain || ctx->commMode == DCMMACed || (ctx->commMode == DCMEncrypted && srcdatalen <= hdrlen)) {
if (ctx->commMode == DCMMACed || ctx->commMode == DCMEncrypted) {
if (ctx->commMode == DCMMACed) {
uint8_t cmac[DESFIRE_MAX_CRYPTO_BLOCK_SIZE] = {0};
DesfireEV2CalcCMAC(ctx, cmd, srcdata, srcdatalen, cmac);
memcpy(&dstdata[srcdatalen], cmac, DesfireGetMACLength(ctx));
*dstdatalen = srcdatalen + DesfireGetMACLength(ctx);
}
} else if (ctx->commMode == DCMEncrypted) {
DesfireEV2FillIV(ctx, true, NULL); // fill IV to ctx
memcpy(dstdata, srcdata, hdrlen);
if (srcdatalen > hdrlen) {
rlen = padded_data_length(srcdatalen + 1 - hdrlen, desfire_get_key_block_length(ctx->keyType));
memcpy(data, &srcdata[hdrlen], srcdatalen - hdrlen);
data[hdrlen] = 0x80; // padding
data[srcdatalen - hdrlen] = 0x80; // padding
dstdata[0] = cmd;
memcpy(&dstdata[1], srcdata, hdrlen);
DesfireCryptoEncDec(ctx, DCOSessionKeyEnc, data, rlen, &dstdata[1 + hdrlen], true);
DesfireEV2FillIV(ctx, true, NULL); // fill IV to ctx
DesfireCryptoEncDec(ctx, DCOSessionKeyEnc, data, rlen, &dstdata[hdrlen], true);
}
uint8_t cmac[DESFIRE_MAX_CRYPTO_BLOCK_SIZE] = {0};
DesfireEV2CalcCMAC(ctx, cmd, &dstdata[1], hdrlen + rlen, cmac);
DesfireEV2CalcCMAC(ctx, cmd, dstdata, hdrlen + rlen, cmac);
memcpy(&dstdata[ + hdrlen + rlen], cmac, DesfireGetMACLength(ctx));
memcpy(&dstdata[hdrlen + rlen], cmac, DesfireGetMACLength(ctx));
*dstdatalen = hdrlen + rlen + DesfireGetMACLength(ctx);
} else if (ctx->commMode == DCMEncryptedPlain) {
@ -317,7 +355,7 @@ static void DesfireSecureChannelDecodeD40(DesfireContext *ctx, uint8_t *srcdata,
switch (ctx->commMode) {
case DCMMACed: {
size_t maclen = DesfireGetMACLength(ctx);
if (srcdatalen > maclen) {
if (srcdatalen > maclen && DesfireEV1D40ReceiveMAC(ctx, ctx->lastCommand)) {
uint8_t mac[16] = {0};
rlen = padded_data_length(srcdatalen - maclen, desfire_get_key_block_length(ctx->keyType));
memcpy(data, srcdata, srcdatalen - maclen);
@ -325,10 +363,12 @@ static void DesfireSecureChannelDecodeD40(DesfireContext *ctx, uint8_t *srcdata,
if (memcmp(mac, &srcdata[srcdatalen - maclen], maclen) == 0) {
*dstdatalen = srcdatalen - maclen;
if (GetAPDULogging())
PrintAndLogEx(INFO, "Received MAC OK");
} else {
PrintAndLogEx(WARNING, "Received MAC is not match with calculated");
//PrintAndLogEx(INFO, " received MAC: %s", sprint_hex(&srcdata[srcdatalen - maclen], maclen));
//PrintAndLogEx(INFO, " calculated MAC: %s", sprint_hex(mac, maclen));
PrintAndLogEx(INFO, " received MAC: %s", sprint_hex(&srcdata[srcdatalen - maclen], maclen));
PrintAndLogEx(INFO, " calculated MAC: %s", sprint_hex(mac, maclen));
}
}
break;
@ -384,6 +424,9 @@ static void DesfireSecureChannelDecodeEV1(DesfireContext *ctx, uint8_t *srcdata,
PrintAndLogEx(WARNING, "Received MAC is not match with calculated");
PrintAndLogEx(INFO, " received MAC: %s", sprint_hex(&srcdata[*dstdatalen], desfire_get_key_block_length(ctx->keyType)));
PrintAndLogEx(INFO, " calculated MAC: %s", sprint_hex(cmac, desfire_get_key_block_length(ctx->keyType)));
} else {
if (GetAPDULogging())
PrintAndLogEx(INFO, "Received MAC OK");
}
} else if (ctx->commMode == DCMEncrypted) {
if (srcdatalen < desfire_get_key_block_length(ctx->keyType)) {
@ -418,7 +461,7 @@ static void DesfireSecureChannelDecodeEV2(DesfireContext *ctx, uint8_t *srcdata,
// if comm mode = plain --> response with MAC
// if request is not zero length --> response MAC
if (ctx->commMode == DCMPlain || ctx->commMode == DCMMACed || (ctx->commMode == DCMEncrypted && !ctx->lastRequestZeroLen)) {
if (ctx->commMode == DCMMACed) {
if (srcdatalen < DesfireGetMACLength(ctx)) {
memcpy(dstdata, srcdata, srcdatalen);
*dstdatalen = srcdatalen;
@ -433,9 +476,12 @@ static void DesfireSecureChannelDecodeEV2(DesfireContext *ctx, uint8_t *srcdata,
PrintAndLogEx(WARNING, "Received MAC is not match with calculated");
PrintAndLogEx(INFO, " received MAC: %s", sprint_hex(&srcdata[*dstdatalen], desfire_get_key_block_length(ctx->keyType)));
PrintAndLogEx(INFO, " calculated MAC: %s", sprint_hex(cmac, desfire_get_key_block_length(ctx->keyType)));
} else {
if (GetAPDULogging())
PrintAndLogEx(INFO, "Received MAC OK");
}
} else if (ctx->commMode == DCMEncrypted) {
if (srcdatalen < desfire_get_key_block_length(ctx->keyType) + DesfireGetMACLength(ctx)) {
if (srcdatalen < DesfireGetMACLength(ctx)) {
memcpy(dstdata, srcdata, srcdatalen);
*dstdatalen = srcdatalen;
return;
@ -448,11 +494,12 @@ static void DesfireSecureChannelDecodeEV2(DesfireContext *ctx, uint8_t *srcdata,
PrintAndLogEx(INFO, " received MAC: %s", sprint_hex(&srcdata[*dstdatalen], desfire_get_key_block_length(ctx->keyType)));
PrintAndLogEx(INFO, " calculated MAC: %s", sprint_hex(cmac, desfire_get_key_block_length(ctx->keyType)));
} else {
//PrintAndLogEx(INFO, "Received MAC OK");
if (GetAPDULogging())
PrintAndLogEx(INFO, "Received MAC OK");
}
if (*dstdatalen >= desfire_get_key_block_length(ctx->keyType)) {
DesfireEV2FillIV(ctx, false, NULL); // fill response IV to ctx
DesfireCryptoEncDec(ctx, DCOSessionKeyEnc, srcdata, *dstdatalen, dstdata, false);
size_t puredatalen = FindISO9797M2PaddingDataLen(dstdata, *dstdatalen);
@ -462,6 +509,7 @@ static void DesfireSecureChannelDecodeEV2(DesfireContext *ctx, uint8_t *srcdata,
PrintAndLogEx(WARNING, "Padding search error.");
}
}
}
}
void DesfireSecureChannelDecode(DesfireContext *ctx, uint8_t *srcdata, size_t srcdatalen, uint8_t respcode, uint8_t *dstdata, size_t *dstdatalen) {