javax.crypto

Class SecretKeyFactorySpi

java.lang.Object

javax.crypto.SecretKeyFactorySpi

Direct Known Subclasses:

NativeSecretKeyFactorySpi, PBEKeyFactory

public abstract class SecretKeyFactorySpi
extends Object

This class defines the Service Provider Interface (SPI) for the SecretKeyFactory class. All the abstract methods in this class must be implemented by each cryptographic service provider who wishes to supply the implementation of a secret-key factory for a particular algorithm.

A provider should document all the key specifications supported by its secret key factory. For example, the DES secret-key factory supplied by the "SunJCE" provider supports DESKeySpec as a transparent representation of DES keys, and that provider's secret-key factory for Triple DES keys supports DESedeKeySpec as a transparent representation of Triple DES keys.

Since:

1.4

Author:

Jan Luehe

See Also:

SecretKey, DESKeySpec, DESedeKeySpec

Constructor Summary

Constructors

Constructor and Description
SecretKeyFactorySpi()

Method Summary

Modifier and Type	Method and Description
protected abstract SecretKey	engineGenerateSecret(KeySpec keySpec) Generates a SecretKey object from the provided key specification (key material).

Methods inherited from class java.lang.Object

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

Constructor Detail

SecretKeyFactorySpi

public SecretKeyFactorySpi()

Method Detail

engineGenerateSecret

protected abstract SecretKey engineGenerateSecret(KeySpec keySpec)
                                           throws InvalidKeySpecException

Generates a SecretKey object from the provided key specification (key material).

Parameters:

keySpec - the specification (key material) of the secret key

Returns:

the secret key

Throws:

InvalidKeySpecException - if the given key specification is inappropriate for this secret-key factory to produce a secret key.