javax.crypto

Class SecretKeyFactorySpi

public abstract class SecretKeyFactorySpi extends Object

The Service Provider Interface (SPI) for the SecretKeyFactory class.

Providers wishing to implement a secret key factory must subclass this and provide an appropriate implementation for all the abstract methods below, and provide an appropriate entry in the master Provider class (the service name for secret key factories is "SecretKeyFactory").

Since: 1.4

See Also: SecretKeyFactory

Constructor Summary
SecretKeyFactorySpi()
Create a new secret key factory SPI.
Method Summary
protected abstract SecretKeyengineGenerateSecret(KeySpec keySpec)
Translate a java.security.KeySpec into a SecretKey.
protected abstract KeySpecengineGetKeySpec(SecretKey key, Class keySpec)
Translate a SecretKey into a java.security.KeySpec.
protected abstract SecretKeyengineTranslateKey(SecretKey key)
Translate a secret key into a different representation.

Constructor Detail

SecretKeyFactorySpi

public SecretKeyFactorySpi()
Create a new secret key factory SPI.

Method Detail

engineGenerateSecret

protected abstract SecretKey engineGenerateSecret(KeySpec keySpec)
Translate a java.security.KeySpec into a SecretKey.

Parameters: keySpec The key specification.

Returns: The secret key.

Throws: java.security.spec.InvalidKeySpecException If the key specification cannot be translated into a secret key.

engineGetKeySpec

protected abstract KeySpec engineGetKeySpec(SecretKey key, Class keySpec)
Translate a SecretKey into a java.security.KeySpec.

Parameters: key The secret key. keySpec The desired key specification class.

Returns: The key specification.

Throws: java.security.spec.InvalidKeySpecException If the secret key cannot be translated into the desired key specification.

engineTranslateKey

protected abstract SecretKey engineTranslateKey(SecretKey key)
Translate a secret key into a different representation.

Parameters: key The secret key to translate.

Returns: The translated key.

Throws: java.security.InvalidKeyException If the specified secret key cannot be translated.