Package marauroa.common.crypto

Class SymmetricKey

java.lang.Object

marauroa.common.crypto.SymmetricKey

public class SymmetricKey
extends Object

Symmetric Key crypto

Author:

hendrik

Constructor Summary

Constructors

Constructor	Description
SymmetricKey(byte[] key)	creates a new SymmetricKey

Method Summary

Modifier and Type	Method	Description
byte[]	decrypt(byte[] initialisationVector, byte[] encrypted)	deencrypts data
byte[]	encrypt(byte[] initialisationVector, byte[] data)	encrypts data

Methods inherited from class java.lang.Object

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

Constructor Details

SymmetricKey

public SymmetricKey(byte[] key)

creates a new SymmetricKey

Parameters:

key - key (at least 128 random bits)

Method Details

encrypt

public byte[] encrypt(byte[] initialisationVector,
 byte[] data)
               throws GeneralSecurityException

encrypts data

Parameters:

initialisationVector - random data of the same length as the key

data - data to encrypt

Returns:

encrypted data

Throws:

GeneralSecurityException - in case of a security error

decrypt

public byte[] decrypt(byte[] initialisationVector,
 byte[] encrypted)
               throws GeneralSecurityException

deencrypts data

Parameters:

initialisationVector - random data of the same length as the key

encrypted - encrytped data to decrypt

Returns:

encrypted data

Throws:

GeneralSecurityException - in case of a security error