net.sf.mmm.crypto.key

Class KeyConfig

java.lang.Object

net.sf.mmm.crypto.CryptoConfig

net.sf.mmm.crypto.algorithm.CryptoAlgorithmConfig

net.sf.mmm.crypto.key.KeyConfig

All Implemented Interfaces:

CryptoAlgorithm, AbstractGetKeyLength

Direct Known Subclasses:

SymmetricKeyConfig

public abstract class KeyConfig
extends CryptoAlgorithmConfig
implements AbstractGetKeyLength

Abstract base class of an algorithm configuration for dealing with Keys.

Since:

1.0.0

Author:

Joerg Hohwiller (hohwille at users.sourceforge.net)

See Also:

KeyCreatorFactory, KeyCreator

Field Summary

Fields

Modifier and Type	Field and Description
private int	keyLength

Fields inherited from class net.sf.mmm.crypto.algorithm.CryptoAlgorithmConfig

algorithm

Fields inherited from class net.sf.mmm.crypto.CryptoConfig

provider

Constructor Summary

Constructors

Constructor and Description
KeyConfig(String algorithm, SecurityProvider provider, int keyLength) The constructor.

Method Summary

Modifier and Type	Method and Description
int	getKeyLength()

Methods inherited from class net.sf.mmm.crypto.algorithm.CryptoAlgorithmConfig

getAlgorithm

Methods inherited from class net.sf.mmm.crypto.CryptoConfig

getProvider

Methods inherited from class java.lang.Object

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

Field Detail

keyLength

private final int keyLength

Constructor Detail

KeyConfig

public KeyConfig(String algorithm,
                 SecurityProvider provider,
                 int keyLength)

The constructor.

Parameters:

algorithm - the algorithm.

provider - the SecurityProvider.

keyLength - the key length in bits.

Method Detail

getKeyLength

public int getKeyLength()

Specified by:

getKeyLength in interface AbstractGetKeyLength

Returns:

the length of the key in bits. The bigger the key length the stronger and more secure the encryption but also the more performance is required for computation. Reasonable values depend on the algorithm: A recent value for RSA is 4096 bits while for PBKDF2 256 is sufficient. However, recommended and secure values change over time as computing power is increasing. Therefore you should research the web to find an accurate value.