de.flexiprovider.core.twofish
Class TwofishKeyGenerator

java.lang.Object
  |
  +--javax.crypto.KeyGeneratorSpi
        |
        +--de.flexiprovider.api.keys.SecretKeyGenerator
              |
              +--de.flexiprovider.core.twofish.TwofishKeyGenerator

public class TwofishKeyGenerator

extends SecretKeyGenerator

TwofishKeyGenerator creates Twofish keys. Keys can have a length of 128, 192 or 256 bits. The default keysize is 128.

Author:

Katja Rauch

Constructor Summary

TwofishKeyGenerator()

Method Summary

SecretKey	generateKey() Generate a Twofish key.
void	init(AlgorithmParameterSpec params, SecureRandom random) Initialize the key generator with the given parameters (which have to be an instance of TwofishKeyGenParameterSpec) and a source of randomness.
void	init(int keySize, SecureRandom random) Initialize the key generator with the given key size and source of randomness.
void	init(SecureRandom random) Initialize the key generator with the default Twofish parameters and the given source of randomness.

Methods inherited from class de.flexiprovider.api.keys.SecretKeyGenerator

engineGenerateKey, engineInit, engineInit, engineInit, init, init, init

Methods inherited from class java.lang.Object

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

Constructor Detail

TwofishKeyGenerator

public TwofishKeyGenerator()

Method Detail

init

public void init(AlgorithmParameterSpec params,
                 SecureRandom random)
          throws InvalidAlgorithmParameterException

Initialize the key generator with the given parameters (which have to be an instance of TwofishKeyGenParameterSpec) and a source of randomness. If the parameters are null, the default parameters are used.

Overrides:

init in class SecretKeyGenerator

Parameters:

params - the parameters

random - the source of randomness

Throws:

InvalidAlgorithmParameterException - if the parameters are null or not an instance of TwofishKeyGenParameterSpec.

init

public void init(int keySize,
                 SecureRandom random)

Initialize the key generator with the given key size and source of randomness. If the key size is invalid, the default key size is chosen.

Overrides:

init in class SecretKeyGenerator

Parameters:

keySize - the key size (128, 192, or 256 bits)

random - the source of randomness

init

public void init(SecureRandom random)

Initialize the key generator with the default Twofish parameters and the given source of randomness.

Overrides:

init in class SecretKeyGenerator

Parameters:

random - the source of randomness

generateKey

public SecretKey generateKey()

Generate a Twofish key.

Overrides:

generateKey in class SecretKeyGenerator

Returns:

the generated TwofishKey