de.flexiprovider.core.saferplus
Class SAFERPlusKeyGenerator

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

public class SAFERPlusKeyGenerator

extends SecretKeyGenerator

This class is used to generate keys for the SAFER+ block cipher. Values for the key size are 128, 192, and 256 bits, with the default being 128 bits.

Author:

Martin Strese, Marcus Lippert

Constructor Summary

SAFERPlusKeyGenerator()

Method Summary

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

SAFERPlusKeyGenerator

public SAFERPlusKeyGenerator()

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 SAFERPlusKeyGenParameterSpec) 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 SAFERPlusKeyGenParameterSpec.

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 SAFERPlus parameters and the given source of randomness.

Overrides:

init in class SecretKeyGenerator

Parameters:

random - the source of randomness

generateKey

public SecretKey generateKey()

Generate a SAFER+ key.

Overrides:

generateKey in class SecretKeyGenerator

Returns:

the generated SAFERPlusKey