au.net.aba.crypto.provider
Class DESKeyFactory
java.lang.Object
|
+--javax.crypto.SecretKeyFactorySpi
|
+--au.net.aba.crypto.provider.DESKeyFactory
- public class DESKeyFactory
- extends SecretKeyFactorySpi
This class is used to convert DES keys into a format usable by the
ABA provider. The supported KeySpec classes are DESKeySpec and
SecretKeySpec. In the case of the SecretKeySpec the key data must
be at least 8 bytes long and there must be no encoding on the key
data. The supported Key class is DESKey.
This class should not be instantiated directly, instead use the
java.security.KeyFactory interface.
- See Also:
java.security.KeyFactory
Field Summary |
static java.lang.String |
ident
|
Method Summary |
protected SecretKey |
engineGenerateSecret(java.security.spec.KeySpec keySpec)
Generates a DES SecretKey object from the provided key specification
(key material). |
protected java.security.spec.KeySpec |
engineGetKeySpec(SecretKey key,
java.lang.Class keySpec)
Returns a specification (key material) of the given key object in
the requested format. |
protected SecretKey |
engineTranslateKey(SecretKey key)
Translates a DES key object, whose provider may be unknown or
potentially untrusted, into a corresponding key object of this key
factory. |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
ident
public static final java.lang.String ident
DESKeyFactory
public DESKeyFactory()
engineGenerateSecret
protected SecretKey engineGenerateSecret(java.security.spec.KeySpec keySpec)
throws java.security.spec.InvalidKeySpecException
- Generates a DES SecretKey object from the provided key specification
(key material). This class supports the DESKeySpec KeySpec and
SecretKeySpec classes.
- Throws:
- java.security.spec.InvalidKeySpecException - The provided KeySpec was not
a DESKeySpec or SecretKeySpec instance.
- Overrides:
- engineGenerateSecret in class SecretKeyFactorySpi
engineGetKeySpec
protected java.security.spec.KeySpec engineGetKeySpec(SecretKey key,
java.lang.Class keySpec)
throws java.security.spec.InvalidKeySpecException
- Returns a specification (key material) of the given key object in
the requested format.
Currently supports conversion from ABA's DES keys to SecretKeySpec
or DESKeySpec instances.
- Parameters:
key
- the keykeySpec
- the requested format in which the key material shall
be returned- Throws:
- java.security.spec.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
unrecognised format).
- Overrides:
- engineGetKeySpec in class SecretKeyFactorySpi
engineTranslateKey
protected SecretKey engineTranslateKey(SecretKey key)
throws java.security.InvalidKeyException
- Translates a DES key object, whose provider may be unknown or
potentially untrusted, into a corresponding key object of this key
factory.
- Parameters:
key
- - the key whose provider is unknown or untrusted- Throws:
- java.security.InvalidKeyException - if the given key cannot be processed
by this key factory.
- Overrides:
- engineTranslateKey in class SecretKeyFactorySpi