javax.crypto: abstract public class: SecretKeyFactorySpi

javax.crypto
abstract public class: SecretKeyFactorySpi [javadoc | source]

java.lang.Object
   javax.crypto.SecretKeyFactorySpi

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.

Also see:

SecretKey

javax.crypto.spec.DESKeySpec

javax.crypto.spec.DESedeKeySpec

author: Jan - Luehe

since: 1.4 -

Method from javax.crypto.SecretKeyFactorySpi Summary:
engineGenerateSecret, engineGetKeySpec, engineTranslateKey

Methods from java.lang.Object:
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from javax.crypto.SecretKeyFactorySpi Detail:
abstract protected SecretKey engineGenerateSecret(KeySpec keySpec) throws InvalidKeySpecException Generates a `SecretKey` object from the provided key specification (key material).
abstract protected KeySpec engineGetKeySpec(SecretKey key, Class keySpec) throws InvalidKeySpecException Returns a specification (key material) of the given key object in the requested format.
abstract protected SecretKey engineTranslateKey(SecretKey key) throws InvalidKeyException Translates a key object, whose provider may be unknown or potentially untrusted, into a corresponding key object of this secret-key factory.

Method from javax.crypto.SecretKeyFactorySpi Detail:

 abstract protected SecretKey engineGenerateSecret(KeySpec keySpec) throws InvalidKeySpecExceptionGenerates a SecretKey object from the
provided key specification (key material).

 abstract protected KeySpec engineGetKeySpec(SecretKey key,
    Class keySpec) throws InvalidKeySpecExceptionReturns a specification (key material) of the given key
object in the requested format.

 abstract protected SecretKey engineTranslateKey(SecretKey key) throws InvalidKeyExceptionTranslates a key object, whose provider may be unknown or
potentially untrusted, into a corresponding key object of this
secret-key factory.