de.flexiprovider.core.rijndael
Class RijndaelKeyGenerator

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

public class RijndaelKeyGenerator

extends SecretKeyGenerator

This class generates new keys for the Rijndael and AES block ciphers. Values for the key size are 128, 192 or 256 bits, with the default being 128 bits.

Author:

Katja Rauch

Constructor Summary

RijndaelKeyGenerator()

Method Summary

SecretKey	generateKey() Generate a Rijndael key.
void	init(AlgorithmParameterSpec params, SecureRandom random) Initialize the key generator with the given parameters (which have to be an instance of RijndaelKeyGenParameterSpec) 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 Rijndael 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

RijndaelKeyGenerator

public RijndaelKeyGenerator()

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 RijndaelKeyGenParameterSpec) 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 RijndaelKeyGenParameterSpec.

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 Rijndael parameters and the given source of randomness.

Overrides:

init in class SecretKeyGenerator

Parameters:

random - the source of randomness

generateKey

public SecretKey generateKey()

Generate a Rijndael key.

Overrides:

generateKey in class SecretKeyGenerator

Returns:

the generated RijndaelKey