javax.crypto
Class Mac

java.lang.Object
  javax.crypto.Mac

All Implemented Interfaces:

Cloneable

public class Mac
extends Object
implements Cloneable

Constructor Summary

protected

Mac(MacSpi macSpi, Provider provider, String algorithm)

Method Summary

Object	clone() Returns a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
byte[]	doFinal()
byte[]	doFinal(byte[] input)
void	doFinal(byte[] output, int outOffset)
String	getAlgorithm()
static Mac	getInstance(String algorithm)
static Mac	getInstance(String algorithm, Provider provider)
static Mac	getInstance(String algorithm, String provider)
int	getMacLength()
Provider	getProvider()
void	init(Key key)
void	init(Key key, AlgorithmParameterSpec params)
void	reset()
void	update(byte input)
void	update(byte[] input)
void	update(byte[] input, int offset, int len)
void	update(ByteBuffer input)

Methods inherited from class java.lang.Object

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

Constructor Detail

Mac

protected Mac(MacSpi macSpi,
              Provider provider,
              String algorithm)

Method Detail

getAlgorithm

public final String getAlgorithm()

getProvider

public final Provider getProvider()

getInstance

public static final Mac getInstance(String algorithm)
                             throws NoSuchAlgorithmException

Throws:

NoSuchAlgorithmException

getInstance

public static final Mac getInstance(String algorithm,
                                    String provider)
                             throws NoSuchAlgorithmException,
                                    NoSuchProviderException

Throws:

NoSuchAlgorithmException

NoSuchProviderException

getInstance

public static final Mac getInstance(String algorithm,
                                    Provider provider)
                             throws NoSuchAlgorithmException

Throws:

NoSuchAlgorithmException

getMacLength

public final int getMacLength()

init

public final void init(Key key,
                       AlgorithmParameterSpec params)
                throws InvalidKeyException,
                       InvalidAlgorithmParameterException

Throws:

InvalidKeyException

InvalidAlgorithmParameterException

init

public final void init(Key key)
                throws InvalidKeyException

Throws:

InvalidKeyException

update

public final void update(byte input)
                  throws IllegalStateException

Throws:

IllegalStateException

update

public final void update(byte[] input,
                         int offset,
                         int len)
                  throws IllegalStateException

Throws:

IllegalStateException

update

public final void update(byte[] input)
                  throws IllegalStateException

Throws:

IllegalStateException

update

public final void update(ByteBuffer input)

doFinal

public final byte[] doFinal()
                     throws IllegalStateException

Throws:

IllegalStateException

doFinal

public final void doFinal(byte[] output,
                          int outOffset)
                   throws ShortBufferException,
                          IllegalStateException

Throws:

ShortBufferException

IllegalStateException

doFinal

public final byte[] doFinal(byte[] input)
                     throws IllegalStateException

Throws:

IllegalStateException

reset

public final void reset()

clone

public final Object clone()
                   throws CloneNotSupportedException

Description copied from class: Object

Returns a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.

Classes which wish to support cloning must specify that they implement the Cloneable interface, since the implementation checks for this.

Overrides:

clone in class Object

Returns:

Object a shallow copy of this object.

Throws:

CloneNotSupportedException - if the receiver's class does not implement the interface Cloneable.