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-/* KeyGeneratorSpi.java -- The key generator service provider interface.
- Copyright (C) 2004 Free Software Foundation, Inc.
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-
-package javax.crypto;
-
-import java.security.InvalidAlgorithmParameterException;
-import java.security.SecureRandom;
-import java.security.spec.AlgorithmParameterSpec;
-
-/**
- * The <i>Service Provider Interface</i> (<b>SPI</b>) for the {@link
- * KeyGenerator} class.
- *
- * <p>Providers wishing to implement a key generator must subclass this
- * and provide an appropriate implementation for all the abstract
- * methods below, and provide an appropriate entry in the master {@link
- * java.security.Provider} class (the service name for key generators is
- * <code>"KeyGenerator"</code>).
- *
- * @author Casey Marshall (csm@gnu.org)
- * @since 1.4
- * @see KeyGenerator
- */
-public abstract class KeyGeneratorSpi
-{
-
- // Constructor.
- // ------------------------------------------------------------------------
-
- /** Create a new key generator SPI. */
- public KeyGeneratorSpi()
- {
- }
-
- // Abstract instance methods.
- // ------------------------------------------------------------------------
-
- /**
- * Generate a key, returning it as a {@link SecretKey}.
- *
- * @return The generated key.
- */
- protected abstract SecretKey engineGenerateKey();
-
- /**
- * Initialize this key generator with parameters and a source of
- * randomness.
- *
- * @param params The parameters.
- * @param random The source of randomness.
- * @throws java.security.InvalidAlgorithmParameterException If the
- * parameters are inappropriate for this instance.
- */
- protected abstract void engineInit(AlgorithmParameterSpec params,
- SecureRandom random)
- throws InvalidAlgorithmParameterException;
-
- /**
- * Initialize this key generator with a key size (in bits) and a
- * source of randomness.
- *
- * @param keySize The target key size, in bits.
- * @param random The source of randomness.
- * @throws java.security.InvalidParameterException If the
- * key size is illogical or unsupported.
- */
- protected abstract void engineInit(int keySize, SecureRandom random);
-
- /**
- * Initialize this key generator with a source of randomness; the
- * implementation should use reasonable default parameters (such as
- * generated key size).
- *
- * @param random The source of randomness.
- */
- protected abstract void engineInit(SecureRandom random);
-}
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