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+/* KeyPairGeneratorAdapter.java --
+ Copyright 2001, 2002, 2006 Free Software Foundation, Inc.
+
+This file is a 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 of the License, 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; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, 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 gnu.java.security.jce.sig;
+
+import gnu.java.security.key.IKeyPairGenerator;
+import gnu.java.security.key.KeyPairGeneratorFactory;
+
+import java.security.InvalidAlgorithmParameterException;
+import java.security.KeyPair;
+import java.security.KeyPairGenerator;
+import java.security.SecureRandom;
+import java.security.spec.AlgorithmParameterSpec;
+
+/**
+ * The implementation of a generic {@link java.security.KeyPairGenerator}
+ * adapter class to wrap gnu.crypto keypair generator instances.<p>
+ *
+ * This class defines the <i>Service Provider Interface</i> (<b>SPI</b>) for the
+ * {@link java.security.KeyPairGenerator} class, which is used to generate pairs
+ * of public and private keys.<p>
+ *
+ * All the abstract methods in the {@link java.security.KeyPairGeneratorSpi}
+ * class are implemented by this class and all its sub-classes.<p>
+ *
+ * In case the client does not explicitly initialize the KeyPairGenerator (via
+ * a call to an <code>initialize()</code> method), the GNU Crypto provider
+ * supplies (and document) default values to be used. For example, the GNU
+ * Crypto provider uses a default <i>modulus</i> size (keysize) of 1024 bits for
+ * the DSS (Digital Signature Standard) a.k.a <i>DSA</i>.<p>
+ *
+ * @version $Revision: 1.3 $
+ */
+public abstract class KeyPairGeneratorAdapter extends KeyPairGenerator
+{
+
+ // Constants and variables
+ // -------------------------------------------------------------------------
+
+ /** Our underlying keypair instance. */
+ protected IKeyPairGenerator adaptee;
+
+ // Constructor(s)
+ // -------------------------------------------------------------------------
+
+ /**
+ * Trivial protected constructor.
+ *
+ * @param kpgName the canonical name of the keypair generator algorithm.
+ */
+ protected KeyPairGeneratorAdapter(String kpgName)
+ {
+ super(kpgName);
+
+ this.adaptee = KeyPairGeneratorFactory.getInstance(kpgName);
+ }
+
+ // Class methods
+ // -------------------------------------------------------------------------
+
+ // java.security.KeyPairGeneratorSpi interface implementation
+ // -------------------------------------------------------------------------
+
+ public abstract void initialize(int keysize, SecureRandom random);
+
+ public abstract void initialize(AlgorithmParameterSpec params,
+ SecureRandom random)
+ throws InvalidAlgorithmParameterException;
+
+ public KeyPair generateKeyPair()
+ {
+ return adaptee.generate();
+ }
+}
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