cz.d1x.dxcrypto.encryption

Class PBKDF2KeyFactory

java.lang.Object

cz.d1x.dxcrypto.encryption.PBKDF2KeyFactory

All Implemented Interfaces:

KeyFactory<Key>

public final class PBKDF2KeyFactory
extends Object
implements KeyFactory<Key>

Key factory that uses PBKDF2 function with HMAC-SHA1 for key derivation.

Author:

Zdenek Obst, zdenek.obst-at-gmail.com

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	PBKDF2KeyFactory(String encryptionAlgorithmName, byte[] keyPassword, int keyLength, byte[] keySalt, int iterationsCount) Creates a new PBKDF2 key factory.

Method Summary

Modifier and Type	Method and Description
Key	getKey() Gets a key for encryption or decryption.

Methods inherited from class java.lang.Object

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

Constructor Detail

PBKDF2KeyFactory

protected PBKDF2KeyFactory(String encryptionAlgorithmName,
                           byte[] keyPassword,
                           int keyLength,
                           byte[] keySalt,
                           int iterationsCount)

Creates a new PBKDF2 key factory.

Parameters:

encryptionAlgorithmName - name of encryption algorithm for which key will be generated

keyPassword - password for key derivation

keySalt - salt for key derivation

iterationsCount - count of iterations for key derivation

keyLength - length of desired key

Method Detail

getKey

public Key getKey()
           throws EncryptionException

Description copied from interface: KeyFactory

Gets a key for encryption or decryption.

Specified by:

getKey in interface KeyFactory<Key>

Returns:

key for encryption

Throws:

EncryptionException - possible exception if key cannot be constructed