javax.crypto

Class KeyGeneratorSpi

java.lang.Object

javax.crypto.KeyGeneratorSpi

Direct Known Subclasses:

BaseKeyGenerator

public abstract class KeyGeneratorSpi
extends Object

The Service Provider Interface (SPI) definition for the KeyGenerator class.

See Also:

KeyGenerator

Constructor Summary

Constructors

Constructor and Description
KeyGeneratorSpi() Creates a new KeyGeneratorSpi instance.

Method Summary

Modifier and Type	Method and Description
protected abstract SecretKey	engineGenerateKey() Generates a secret key.
protected abstract void	engineInit(AlgorithmParameterSpec params, SecureRandom random) Initializes this KeyGeneratorSpi instance with the specified algorithm parameters and randomness source.
protected abstract void	engineInit(int keysize, SecureRandom random) Initializes this KeyGenerator instance for the specified key size (in bits) using the specified randomness source.
protected abstract void	engineInit(SecureRandom random) Initializes this KeyGenerator with the specified randomness source.

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyGeneratorSpi

public KeyGeneratorSpi()

Creates a new KeyGeneratorSpi instance.

Method Detail

engineGenerateKey

protected abstract SecretKey engineGenerateKey()

Generates a secret key.

Returns:

the generated secret key.

engineInit

protected abstract void engineInit(AlgorithmParameterSpec params,
                                   SecureRandom random)
                            throws InvalidAlgorithmParameterException

Initializes this KeyGeneratorSpi instance with the specified algorithm parameters and randomness source.

Parameters:

params - the parameters for the key generation algorithm.

random - the randomness source for any random bytes.

Throws:

InvalidAlgorithmParameterException - if the parameters cannot be uses to initialize this key generator algorithm.

engineInit

protected abstract void engineInit(int keysize,
                                   SecureRandom random)

Initializes this KeyGenerator instance for the specified key size (in bits) using the specified randomness source.

Parameters:

keysize - the size of the key (in bits).

random - the randomness source for any random bytes.

engineInit

protected abstract void engineInit(SecureRandom random)

Initializes this KeyGenerator with the specified randomness source.

Parameters:

random - the randomness source for any random bytes.