au.net.aba.crypto.provider
Class DESedeKeyFactory
java.lang.Object
|
+--javax.crypto.SecretKeyFactorySpi
|
+--au.net.aba.crypto.provider.DESedeKeyFactory
- public class DESedeKeyFactory
- extends SecretKeyFactorySpi
This class is used to convert DESede keys into a format usable by the
ABA provider. The supported KeySpec classes are DESedeKeySpec and
SecretKeySpec. In the case of the SecretKeySpec the keydata must be
at least 24 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 DESede 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 DESede 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
DESedeKeyFactory
public DESedeKeyFactory()
engineGenerateSecret
protected SecretKey engineGenerateSecret(java.security.spec.KeySpec keySpec)
throws java.security.spec.InvalidKeySpecException
- Generates a DESede SecretKey object from the provided key
specification (key material). This class supports the
DESedeKeySpec and SecretKeySpec KeySpec classes.
- Throws:
- java.security.spec.InvalidKeySpecException - The provided KeySpec was not
a DESKeySpec or SecretKeySpec KeySpec.
- 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.
Can convert from ABA's DESede keys into either a SecretKeySpec
or DESedeKeySpec instance.
- 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 DESede 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