I'm trying to set the VC (Virtual Card) Configuration key on a Mifare DESFire EV3 card.
The VC Configuration key has the key number 0x20 (32 dec) as per AN12752 MIFARE DESFire EV3 feature and functionality comparison to other MIFARE DESFire products:
I'm using NXP's TapLinx Android api in version 3.0 with this code (the card is detected by the api
type = libInstance.getCardType(intent);):
int timeOut = 2000;
desFireEV3.getReader().setTimeout(timeOut);
// select master application
desFireEV3.selectApplication(0);
// authenticate the master application with the PICC Master Key
// DES default key
byte[] TDES_KEY_ZERO = new byte[16]; // 16 bytes
KeyData objKEY_TDES128ZERO = new KeyData();
SecretKeySpec secretKeySpecTDesZero = new SecretKeySpec(TDES_KEY_ZERO, "TDES");
objKEY_TDES128ZERO.setKey(secretKeySpecTDesZero);
desFireEV3.authenticate(0, IDESFireEV3.AuthType.Native, KeyType.THREEDES, objKEY_TDES128ZERO);
showMessage("authStatus 32: " + desFireEV3.getAuthStatus(), 'n');
showMessage("change VC Configuration key (0x20)", 'n');
try {
byte NEW_KEY_VERSION = (byte) 0x00;
desFireEV3.changeVCKey(32, new byte[16], new byte[16], NEW_KEY_VERSION);
showMessage("change VC Configuration key (0x20) done", 'n');
} catch (UsageException e) {
showMessage("UsageException: " + e.getMessage(), 'n');
} catch (InvalidResponseLengthException e) {
showMessage("InvalidResponseLengthException: " + e.getMessage(), 'n');
} catch (Exception e) {
showMessage("Exception: " + e.getMessage(), 'n');
}
Running this code gives these results in Logcat and ends with an Integrity Error (0x1E / 30 dec).:
NxpLogger de.androidcrypto.taplinxexample I Command sent to card : 5A000000
NxpLogger de.androidcrypto.taplinxexample I Response received : 00
NxpLogger de.androidcrypto.taplinxexample I Command sent to card : 0A00
NxpLogger de.androidcrypto.taplinxexample I Response received : AF0DCA56AAEA80FD9D
NxpLogger de.androidcrypto.taplinxexample I Command sent to card : AF36E119DC9983B9E990AE554DA65151C6
NxpLogger de.androidcrypto.taplinxexample I Response received : 00738F76587001AF44
SampleTapLinx de.androidcrypto.taplinxexample I Dump Data: authStatus 32: Native
NXPLog de.androidcrypto.taplinxexample I authStatus 32: Native
SampleTapLinx de.androidcrypto.taplinxexample I Dump Data: change VC Configuration key (0x20)
NXPLog de.androidcrypto.taplinxexample I change VC Configuration key (0x20)
SampleTapLinx de.androidcrypto.taplinxexample I Dump Data: Exception: Integrity Error SW2 = 30
NXPLog de.androidcrypto.taplinxexample I Exception: Integrity Error SW2 = 30
What causes this error and how can I avoid it to change the key successfully ?
