org.spongycastle.jcajce.spec

Class AEADParameterSpec

java.lang.Object

javax.crypto.spec.IvParameterSpec

org.spongycastle.jcajce.spec.AEADParameterSpec

All Implemented Interfaces:

java.security.spec.AlgorithmParameterSpec

public class AEADParameterSpec
extends javax.crypto.spec.IvParameterSpec

ParameterSpec for AEAD modes which allows associated data to be added via an algorithm parameter spec.In normal circumstances you would only want to use this if you had to work with the pre-JDK1.7 Cipher class as associated data is ignored for the purposes of returning a Cipher's parameters.

Constructor Summary

Constructors

Constructor and Description
AEADParameterSpec(byte[] nonce, int macSizeInBits) Base constructor.
AEADParameterSpec(byte[] nonce, int macSizeInBits, byte[] associatedData) Base constructor with prepended associated data.

Method Summary

Modifier and Type	Method and Description
byte[]	getAssociatedData() Return the associated data associated with this parameter spec.
int	getMacSizeInBits() Return the size of the MAC associated with this parameter spec.
byte[]	getNonce() Return the nonce (same as IV) associated with this parameter spec.

Methods inherited from class javax.crypto.spec.IvParameterSpec

getIV

Methods inherited from class java.lang.Object

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

Constructor Detail

AEADParameterSpec

public AEADParameterSpec(byte[] nonce,
                         int macSizeInBits)

Base constructor.

Parameters:

nonce - nonce/iv to be used

macSizeInBits - macSize in bits

AEADParameterSpec

public AEADParameterSpec(byte[] nonce,
                         int macSizeInBits,
                         byte[] associatedData)

Base constructor with prepended associated data.

Parameters:

nonce - nonce/iv to be used

macSizeInBits - macSize in bits

associatedData - associated data to be prepended to the cipher stream.

Method Detail

getMacSizeInBits

public int getMacSizeInBits()

Return the size of the MAC associated with this parameter spec.

Returns:

the MAC size in bits.

getAssociatedData

public byte[] getAssociatedData()

Return the associated data associated with this parameter spec.

Returns:

the associated data, null if there isn't any.

getNonce

public byte[] getNonce()

Return the nonce (same as IV) associated with this parameter spec.

Returns:

the nonce/IV.