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java.security
Class KeyFactorySpi  

java.lang.Object
  java.security.KeyFactorySpi

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public abstract class KeyFactorySpi

extends java.lang.Object

KeyFactorySpi is the Service Provider Interface (SPI) for the KeyFactory class. This is the interface for providers to supply to implement a key factory for an algorithm. Key factories are used to convert keys (opaque cryptographic keys of type Key) into key specifications (transparent representations of the underlying key material). Key factories are bi-directional. They allow a key class to be converted into a key specification (key material) and back again. For example DSA public keys can be specified as DSAPublicKeySpec or X509EncodedKeySpec. The key factory translate these key specifications.

Since:

JDK 1.2

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Constructor Summary

KeyFactorySpi()           Constucts a new KeyFactorySpi.

 

Method Summary
protected abstract  PrivateKey	engineGeneratePrivate(java.security.spec.KeySpec keySpec)           Generates a private key from the provided key specification.
protected abstract  PublicKey	engineGeneratePublic(java.security.spec.KeySpec keySpec)           Generates a public key from the provided key specification.
protected abstract  java.security.spec.KeySpec	engineGetKeySpec(Key key, java.lang.Class keySpec)           Returns a key specification for the given key.
protected abstract  Key	engineTranslateKey(Key key)           Translates the key from an unknown or untrusted provider into a key for this key factory.

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

KeyFactorySpi

public KeyFactorySpi()

Constucts a new KeyFactorySpi.

Method Detail

engineGeneratePublic

protected abstract PublicKey engineGeneratePublic(java.security.spec.KeySpec keySpec)
                                           throws java.security.spec.InvalidKeySpecException

Generates a public key from the provided key specification.

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engineGeneratePrivate

protected abstract PrivateKey engineGeneratePrivate(java.security.spec.KeySpec keySpec)
                                             throws java.security.spec.InvalidKeySpecException

Generates a private key from the provided key specification.

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engineGetKeySpec

protected abstract java.security.spec.KeySpec engineGetKeySpec(Key key,
                                                               java.lang.Class keySpec)
                                                        throws java.security.spec.InvalidKeySpecException

Returns a key specification for the given key. keySpec identifies the specification class to return the key material in.

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engineTranslateKey

protected abstract Key engineTranslateKey(Key key)
                                   throws InvalidKeyException

Translates the key from an unknown or untrusted provider into a key for this key factory.

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> java >> [ security overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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