de.flexiprovider.core.rc2
Class RC2KeyFactory

java.lang.Object
  |
  +--javax.crypto.SecretKeyFactorySpi
        |
        +--de.flexiprovider.api.keys.SecretKeyFactory
              |
              +--de.flexiprovider.core.rc2.RC2KeyFactory

public class RC2KeyFactory

extends SecretKeyFactory

This class implementes the RC2 key factory. It is used to convert RC2 keys between different formats.

Author:

Michele Boivin

Constructor Summary

RC2KeyFactory()

Method Summary

SecretKey	generateSecret(KeySpec keySpec) Generate an RC2 key object from the provided key specification.
KeySpec	getKeySpec(SecretKey key, java.lang.Class keySpec) Return a key specification of the given key object in the requested format.
SecretKey	translateKey(SecretKey key) Translate an RC2 key object, whose provider may be unknown or potentially untrusted, into a corresponding key object of this key factory.

Methods inherited from class de.flexiprovider.api.keys.SecretKeyFactory

engineGenerateSecret, engineGetKeySpec, engineTranslateKey

Methods inherited from class java.lang.Object

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

Constructor Detail

RC2KeyFactory

public RC2KeyFactory()

Method Detail

generateSecret

public SecretKey generateSecret(KeySpec keySpec)
                         throws InvalidKeySpecException

Generate an RC2 key object from the provided key specification. The key specification has to be an instance of SecretKeySpec of type "RC2".

Overrides:

generateSecret in class SecretKeyFactory

Parameters:

keySpec - the key specification

Returns:

the secret key

Throws:

InvalidKeySpecException - if the key specification is of the wrong type.

getKeySpec

public KeySpec getKeySpec(SecretKey key,
                          java.lang.Class keySpec)
                   throws InvalidKeySpecException

Return a key specification of the given key object in the requested format. The format has to be equal to or a superclass of SecretKeySpec. The key has to be an instance of RC2Key.

Overrides:

getKeySpec in class SecretKeyFactory

Parameters:

key - the key

keySpec - the requested format in which the key material shall be returned

Returns:

the underlying key specification (key material) in the requested format

Throws:

InvalidKeySpecException - if the requested key specification is inappropriate for the given key, or the given key cannot be dealt with (e.g., the given key has an unrecognized format).

translateKey

public SecretKey translateKey(SecretKey key)
                       throws InvalidKeyException

Translate an RC2 key object, whose provider may be unknown or potentially untrusted, into a corresponding key object of this key factory. Currently, only RC2Key is supported as source format.

Overrides:

translateKey in class SecretKeyFactory

Parameters:

key - the source key

Returns:

the translated key

Throws:

InvalidKeyException - if the given key is not an instance of RC2Key