com.ibm.crypto.provider
Class PBEKeyFactory
java.lang.Object
|
+--javax.crypto.SecretKeyFactorySpi
|
+--com.ibm.crypto.provider.PBEKeyFactory
- public final class PBEKeyFactory
- extends SecretKeyFactorySpi
This class implements a key factory for PBE keys according to PKCS#5,
meaning that the password must consist of printable ASCII characters
(values 32 to 126 decimal inclusive) and only the low order 8 bits
of each password character are used.
Constructor Summary |
PBEKeyFactory()
Verify the JCE framework in the constructor. |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
PBEKeyFactory
public PBEKeyFactory()
- Verify the JCE framework in the constructor.
- Throws:
- SecurityException - if fails to verify
the JCE framework.
engineGenerateSecret
protected SecretKey engineGenerateSecret(KeySpec keySpec)
throws InvalidKeySpecException
- Generates a
SecretKey
object from the provided key
specification (key material). The keySpec may be of type PBEKeySpec
or PKCS5KeySpec.
- Overrides:
- engineGenerateSecret in class SecretKeyFactorySpi
- Parameters:
keySpec
- the specification (key material) of the secret key- Returns:
- the secret key
- Throws:
- InvalidKeySpecException - if the given key specification
is inappropriate for this key factory to produce a PBE key.
engineGetKeySpec
protected KeySpec engineGetKeySpec(SecretKey key,
Class keySpecCl)
throws InvalidKeySpecException
- Returns a specification (key material) of the given key
in the requested format.
- Overrides:
- engineGetKeySpec in class SecretKeyFactorySpi
- Parameters:
key
- the keykeySpec
- 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 processed
(e.g., the given key has an unrecognized algorithm or format).
engineTranslateKey
protected SecretKey engineTranslateKey(SecretKey key)
throws InvalidKeyException
- Translates a
SecretKey
object, whose provider may be
unknown or potentially untrusted, into a corresponding
SecretKey
object of this key factory.
- Overrides:
- engineTranslateKey in class SecretKeyFactorySpi
- Parameters:
key
- the key whose provider is unknown or untrusted- Returns:
- the translated key
- Throws:
- InvalidKeyException - if the given key cannot be processed by
this key factory.