Module com.pi4j.crowpi

Package com.pi4j.crowpi.components.internal.rfid

Class MifareKey

java.lang.Object

com.pi4j.crowpi.components.internal.rfid.MifareKey

public final class MifareKey
extends Object

Helper class for authenticating against MIFARE cards using either Key A or Key B. Provides getDefaultKeyA() and getDefaultKeyB() for retrieving the factory default keys (all FF).

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	MifareKey.Type	All available key types on MIFARE cards

Constructor Summary

Constructors

Constructor	Description
MifareKey(MifareKey.Type type, byte[] bytes)	Creates a new MIFARE key which can be used for authenticating against a card.

Method Summary

Modifier and Type	Method	Description
byte[]	getBytes()	Returns the raw content / bytes for this key.
static MifareKey	getDefaultKeyA()	Returns the default factory key (six times 0xFF) to be used as MifareKey.Type.KEY_A.
static MifareKey	getDefaultKeyB()	Returns the default factory key (six times 0xFF) to be used as MifareKey.Type.KEY_B.
int	getLength()	Returns the length of this key, should always be 6.
MifareKey.Type	getType()	Returns the type of this key.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

MifareKey

public MifareKey(MifareKey.Type type,
 byte[] bytes)

Creates a new MIFARE key which can be used for authenticating against a card.

Parameters:

type - Type of authentication key

bytes - Contents of key, must be exactly 6 bytes

Method Details

getDefaultKeyA

public static MifareKey getDefaultKeyA()

Returns the default factory key (six times 0xFF) to be used as MifareKey.Type.KEY_A.

Returns:

Instance of default key A

getDefaultKeyB

public static MifareKey getDefaultKeyB()

Returns the default factory key (six times 0xFF) to be used as MifareKey.Type.KEY_B.

Returns:

Instance of default key B

getBytes

public byte[] getBytes()

Returns the raw content / bytes for this key.

Returns:

Byte array of key contents

getLength

public int getLength()

Returns the length of this key, should always be 6.

Returns:

Length of key

getType

public MifareKey.Type getType()

Returns the type of this key.

Returns:

Type of key