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The UnboundID LDAP SDK for Java is a fast, comprehensive, and easy-to-use Java API for communicating with LDAP directory servers and performing related tasks like reading and writing LDIF, encoding and decoding data using base64 and ASN.1 BER, and performing secure communication. This package contains the Commercial Edition of the LDAP SDK, which includes all of the general-purpose functionality contained in the Standard Edition, plus additional functionality specific to UnboundID server products.

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/*
 * Copyright 2008-2016 UnboundID Corp.
 * All Rights Reserved.
 */
/*
 * Copyright (C) 2008-2016 UnboundID Corp.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License (GPLv2 only)
 * or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
 * as published by the Free Software Foundation.
 *
 * This program 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 this program; if not, see .
 */
package com.unboundid.util.ssl;



import java.security.KeyStoreException;
import java.security.KeyStore;
import javax.net.ssl.KeyManager;
import javax.net.ssl.KeyManagerFactory;

import com.unboundid.util.NotMutable;
import com.unboundid.util.ThreadSafety;
import com.unboundid.util.ThreadSafetyLevel;

import static com.unboundid.util.Debug.*;
import static com.unboundid.util.ssl.SSLMessages.*;



/**
 * This class provides an SSL key manager that may be used to retrieve
 * certificates from a PKCS#11 token.
 */
@NotMutable()
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class PKCS11KeyManager
       extends WrapperKeyManager
{
  /**
   * The key store type to use to access PKCS#11 tokens.
   */
  private static final String PKCS11_KEY_STORE_TYPE = "PKCS11";



  /**
   * Creates a new instance of this PKCS11 key manager that provides the ability
   * to retrieve certificates from a PKCS#11 token.
   *
   * @param  keyStorePIN       The PIN to use to access the contents of the
   *                           PKCS#11 token.  It may be {@code null} if no PIN
   *                           is required.
   * @param  certificateAlias  The nickname of the certificate that should be
   *                           selected.  It may be {@code null} if any
   *                           acceptable certificate found may be used.
   *
   * @throws  KeyStoreException  If a problem occurs while initializing this key
   *                             manager.
   */
  public PKCS11KeyManager(final char[] keyStorePIN,
                          final String certificateAlias)
         throws KeyStoreException
  {
    super(getKeyManagers(keyStorePIN), certificateAlias);
  }



  /**
   * Retrieves the set of key managers that will be wrapped by this key manager.
   *
   * @param  keyStorePIN  The PIN to use to access the contents of the PKCS#11
   *                      token.  It may be {@code null} if no PIN is required.
   *
   * @return  The set of key managers that will be wrapped by this key manager.
   *
   * @throws  KeyStoreException  If a problem occurs while initializing this key
   *                             manager.
   */
  private static KeyManager[] getKeyManagers(final char[] keyStorePIN)
          throws KeyStoreException
  {
    final KeyStore ks = KeyStore.getInstance(PKCS11_KEY_STORE_TYPE);
    try
    {
      ks.load(null, keyStorePIN);
    }
    catch (Exception e)
    {
      debugException(e);

      throw new KeyStoreException(
           ERR_PKCS11_CANNOT_ACCESS.get(String.valueOf(e)), e);
    }

    try
    {
      final KeyManagerFactory factory = KeyManagerFactory.getInstance(
           KeyManagerFactory.getDefaultAlgorithm());
      factory.init(ks, keyStorePIN);
      return factory.getKeyManagers();
    }
    catch (Exception e)
    {
      debugException(e);

      throw new KeyStoreException(
           ERR_PKCS11_CANNOT_GET_KEY_MANAGERS.get(String.valueOf(e)), e);
    }
  }
}