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From-SVN: r102074
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Tom Tromey
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294
libjava/classpath/java/security/cert/CertStore.java
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294
libjava/classpath/java/security/cert/CertStore.java
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/* CertStore -- stores and retrieves certificates.
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Copyright (C) 2003, 2004 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.security.cert;
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import gnu.java.security.Engine;
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import java.security.InvalidAlgorithmParameterException;
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import java.security.NoSuchAlgorithmException;
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import java.security.NoSuchProviderException;
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import java.security.PrivilegedAction;
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import java.security.Provider;
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import java.security.Security;
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import java.util.Collection;
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/**
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* A CertStore is a read-only repository for certificates and
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* certificate revocation lists.
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*
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* @since JDK 1.4
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*/
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public class CertStore
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{
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// Constants and fields.
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// ------------------------------------------------------------------------
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/** Service name for CertStore. */
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private static final String CERT_STORE = "CertStore";
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/** The underlying implementation. */
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private CertStoreSpi storeSpi;
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/** This implementation's provider. */
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private Provider provider;
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/** The name of this key store type. */
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private String type;
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/** The parameters used to initialize this instance, if any. */
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private CertStoreParameters params;
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// Constructor.
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// ------------------------------------------------------------------------
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/**
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* Create a new CertStore.
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*
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* @param storeSpi The underlying implementation.
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* @param provider The provider of this implementation.
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* @param type The type of CertStore this class represents.
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* @param params The parameters used to initialize this instance, if any.
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*/
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protected CertStore(CertStoreSpi storeSpi, Provider provider, String type,
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CertStoreParameters params)
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{
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this.storeSpi = storeSpi;
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this.provider = provider;
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this.type = type;
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this.params = params;
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}
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// Class methods.
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// ------------------------------------------------------------------------
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/**
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* Returns the default certificate store type.
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*
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* <p>This value can be set at run-time via the security property
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* "certstore.type"; if not specified than the default type will be
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* "LDAP".
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*
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* @return The default CertStore type.
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*/
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public static final synchronized String getDefaultType()
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{
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String type = null;
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type = (String) java.security.AccessController.doPrivileged(
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new PrivilegedAction() {
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public Object run() {
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return Security.getProperty("certstore.type");
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}
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}
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);
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if (type == null)
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type = "LDAP";
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return type;
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}
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/**
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* Get an instance of the given certificate store from the first
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* installed provider.
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*
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* @param type The type of CertStore to create.
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* @param params The parameters to initialize this cert store with.
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* @return The new instance.
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* @throws InvalidAlgorithmParameterException If the instance rejects
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* the specified parameters.
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* @throws NoSuchAlgorithmException If no installed provider
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* implements the specified CertStore.
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* @throws IllegalArgumentException If <i>provider</i> is null.
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*/
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public static CertStore getInstance(String type, CertStoreParameters params)
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throws InvalidAlgorithmParameterException, NoSuchAlgorithmException
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{
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Provider[] p = Security.getProviders();
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for (int i = 0; i < p.length; i++)
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{
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try
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{
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return getInstance(type, params, p[i]);
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}
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catch (NoSuchAlgorithmException e)
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{
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// Ignored.
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}
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}
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throw new NoSuchAlgorithmException(type);
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}
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/**
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* Get an instance of the given certificate store from the named
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* provider.
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*
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* @param type The type of CertStore to create.
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* @param params The parameters to initialize this cert store with.
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* @param provider The name of the provider from which to get the
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* implementation.
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* @return The new instance.
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* @throws InvalidAlgorithmParameterException If the instance rejects
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* the specified parameters.
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* @throws NoSuchAlgorithmException If the specified provider does not
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* implement the specified CertStore.
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* @throws NoSuchProviderException If no provider named
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* <i>provider</i> is installed.
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* @throws IllegalArgumentException If <i>provider</i> is null.
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*/
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public static CertStore getInstance(String type, CertStoreParameters params,
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String provider)
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throws InvalidAlgorithmParameterException, NoSuchAlgorithmException,
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NoSuchProviderException
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{
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Provider p = Security.getProvider(provider);
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if (p == null)
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throw new NoSuchProviderException(provider);
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return getInstance(type, params, p);
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}
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/**
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* Get an instance of the given certificate store from the given
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* provider.
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*
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* @param type The type of CertStore to create.
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* @param params The parameters to initialize this cert store with.
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* @param provider The provider from which to get the implementation.
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* @return The new instance.
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* @throws InvalidAlgorithmParameterException If the instance rejects
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* the specified parameters.
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* @throws NoSuchAlgorithmException If the specified provider does not
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* implement the specified CertStore.
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* @throws IllegalArgumentException If <i>provider</i> is null.
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*/
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public static CertStore getInstance(String type, CertStoreParameters params,
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Provider provider)
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throws InvalidAlgorithmParameterException, NoSuchAlgorithmException
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{
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if (provider == null)
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throw new IllegalArgumentException("null provider");
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try
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{
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return new CertStore((CertStoreSpi) Engine.getInstance(CERT_STORE,
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type, provider, new Object[] { params }), provider, type, params);
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}
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catch (ClassCastException cce)
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{
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throw new NoSuchAlgorithmException(type);
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}
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catch (java.lang.reflect.InvocationTargetException ite)
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{
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Throwable cause = ite.getCause();
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if (cause instanceof InvalidAlgorithmParameterException)
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throw (InvalidAlgorithmParameterException) cause;
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else
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throw new NoSuchAlgorithmException(type);
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}
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}
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// Instance methods.
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// ------------------------------------------------------------------------
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/**
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* Return the type of certificate store this instance represents.
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*
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* @return The CertStore type.
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*/
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public final String getType()
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{
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return type;
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}
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/**
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* Return the provider of this implementation.
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*
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* @return The provider.
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*/
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public final Provider getProvider()
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{
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return provider;
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}
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/**
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* Get the parameters this instance was created with, if any. The
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* parameters will be cloned before they are returned.
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*
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* @return The parameters, or null.
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*/
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public final CertStoreParameters getCertStoreParameters()
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{
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return params != null ? (CertStoreParameters) params.clone() : null;
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}
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/**
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* Get a collection of certificates from this CertStore, optionally
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* filtered by the specified CertSelector. The Collection returned may
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* be empty, but will never be null.
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*
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* <p>Implementations may not allow a null argument, even if no
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* filtering is desired.
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*
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* @param selector The certificate selector.
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* @return The collection of certificates.
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* @throws CertStoreException If the certificates cannot be retrieved.
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*/
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public final Collection getCertificates(CertSelector selector)
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throws CertStoreException
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{
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return storeSpi.engineGetCertificates(selector);
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}
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/**
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* Get a collection of certificate revocation lists from this CertStore,
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* optionally filtered by the specified CRLSelector. The Collection
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* returned may be empty, but will never be null.
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*
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* <p>Implementations may not allow a null argument, even if no
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* filtering is desired.
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*
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* @param selector The certificate selector.
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* @return The collection of certificate revocation lists.
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* @throws CertStoreException If the CRLs cannot be retrieved.
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*/
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public final Collection getCRLs(CRLSelector selector)
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throws CertStoreException
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{
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return storeSpi.engineGetCRLs(selector);
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}
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}
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