KeyGeneratorSpi (GNU Classpath 0.94-pre Documentation)

Class KeyGeneratorSpi

public abstract class KeyGeneratorSpi extends Object

The Service Provider Interface (SPI) for the {@link KeyGenerator} class.

Providers wishing to implement a key generator must subclass this and provide an appropriate implementation for all the abstract methods below, and provide an appropriate entry in the master {@link java.security.Provider} class (the service name for key generators is "KeyGenerator").

Since: 1.4

See Also: KeyGenerator

Constructor Summary
	KeyGeneratorSpi() Create a new key generator SPI.

Constructor Summary

KeyGeneratorSpi()

Create a new key generator SPI.

Method Summary
protected abstract SecretKey	engineGenerateKey() Generate a key, returning it as a {@link SecretKey}.
protected abstract void	engineInit(AlgorithmParameterSpec params, SecureRandom random) Initialize this key generator with parameters and a source of randomness.
protected abstract void	engineInit(int keySize, SecureRandom random) Initialize this key generator with a key size (in bits) and a source of randomness.
protected abstract void	engineInit(SecureRandom random) Initialize this key generator with a source of randomness; the implementation should use reasonable default parameters (such as generated key size).

Method Summary

protected abstract SecretKey

engineGenerateKey()

Generate a key, returning it as a {@link SecretKey}.

protected abstract void

engineInit(AlgorithmParameterSpec params, SecureRandom random)

Initialize this key generator with parameters and a source of randomness.

protected abstract void

engineInit(int keySize, SecureRandom random)

Initialize this key generator with a key size (in bits) and a source of randomness.

protected abstract void

engineInit(SecureRandom random)

Initialize this key generator with a source of randomness; the implementation should use reasonable default parameters (such as generated key size).

Generate a key, returning it as a {@link SecretKey}.

Returns: The generated key.

engineInit

Initialize this key generator with parameters and a source of randomness.

Parameters: params The parameters. random The source of randomness.

Throws: java.security.InvalidAlgorithmParameterException If the parameters are inappropriate for this instance.

engineInit

Initialize this key generator with a key size (in bits) and a source of randomness.

Parameters: keySize The target key size, in bits. random The source of randomness.

Throws: java.security.InvalidParameterException If the key size is illogical or unsupported.

engineInit

Initialize this key generator with a source of randomness; the implementation should use reasonable default parameters (such as generated key size).

Parameters: random The source of randomness.