This abstract class defines the Service Provider Interface for KeyManagerFactory. Security providers must implement this interface, but applications never need to use it.

public abstract class KeyManagerFactorySpi {
// Public Constructors
     public KeyManagerFactorySpi( );  
// Protected Instance Methods
     protected abstract KeyManager[ ] engineGetKeyManagers( );  
     protected abstract void engineInit(ManagerFactoryParameters spec) 
        throws java.security.InvalidAlgorithmParameterException;  
     protected abstract void engineInit(java.security.KeyStore ks, char[ ] password) 
throws java.security.KeyStoreException, java.security.NoSuchAlgorithmException, 
        java.security.UnrecoverableKeyException;  
}

Passed To

KeyManagerFactory.KeyManagerFactory( )