/* IPrivateKeyring.java -- 
   Copyright (C) 2003, 2006 Free Software Foundation, Inc.

This file is a part of GNU Classpath.

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it under the terms of the GNU General Public License as published by
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package gnu.javax.crypto.keyring;

import java.security.Key;
import java.security.PublicKey;
import java.security.UnrecoverableKeyException;
import java.security.cert.Certificate;

/**
 * An interface to private, or "personal", keyrings, which contain private
 * credentials. The contract is that each such entry is known by a unique
 * <i>alias</i>.
 * <p>
 * What about public keys? and certificate-path?
 */
public interface IPrivateKeyring
    extends IKeyring
{
  /**
   * Tests if this keyring contains a private key entry with the given
   * <code>alias</code>.
   * 
   * @param alias The alias to check.
   * @return <code>true</code> if this keyring contains a private key with the
   *         given <code>alias</code>; <code>false</code> otherwise.
   */
  boolean containsPrivateKey(String alias);

  /**
   * Returns the private key with the given <code>alias</code>.
   * 
   * @param alias The alias of the private key to find.
   * @param password The password of the private key.
   * @return The private, or secret, key if one is found; <code>null</code> if
   *         none were found.
   * @throws UnrecoverableKeyException If the private key could not be
   *           recovered, possibly due to a bad password.
   */
  Key getPrivateKey(String alias, char[] password)
      throws UnrecoverableKeyException;

  /**
   * Adds a private key to this keyring.
   * 
   * @param alias The alias of the private key.
   * @param key The private key.
   * @param password The password used to protect this private key.
   */
  void putPrivateKey(String alias, Key key, char[] password);

  /**
   * Checks if this keyring contains a public key with the given
   * <code>alias</code>.
   * 
   * @param alias The alias to test.
   * @return <code>true</code> if this keyring contains a public key entry
   *         with the given <code>alias</code>; <code>false</code>
   *         otherwise.
   */
  boolean containsPublicKey(String alias);

  /**
   * Returns the public key with the given <code>alias</code>, or
   * <code>null</code> if there is no such entry.
   * 
   * @param alias The alias of the public key to find.
   * @return The public key; or <code>null</code> if none were found.
   */
  PublicKey getPublicKey(String alias);

  /**
   * Sets a public key entry.
   * 
   * @param alias The alias for this public key.
   * @param key The public key.
   */
  void putPublicKey(String alias, PublicKey key);

  /**
   * Checks if this keyring contains a certificate path with the given
   * <code>alias</code>.
   * 
   * @param alias The alias to check.
   * @return <code>true</code> if this keyring contains a certificate path
   *         with the given <code>alias</code>; <code>false</code>
   *         otherwise.
   */
  boolean containsCertPath(String alias);

  /**
   * Returns the certificate path with the given <code>alias</code>, or
   * <code>null</code> if there is no such entry.
   * 
   * @param alias The alias of the certificate path to find.
   * @return The certificate path for the designated <code>alias</code>; or
   *         <code>null</code> if none were found.
   */
  Certificate[] getCertPath(String alias);

  /**
   * Sets a certificate path entry.
   * 
   * @param alias The alias for this certificate path.
   * @param path The certificate path.
   */
  void putCertPath(String alias, Certificate[] path);
}