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diff --git a/libjava/java/security/KeyStoreSpi.java b/libjava/java/security/KeyStoreSpi.java
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+/* KeyStoreSpi.java --- Key Store Service Provider Interface
+   Copyright (C) 1999 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 USA.
+
+As a special exception, if you link this library with other files to
+produce an executable, this library does not by itself cause the
+resulting executable to be covered by the GNU General Public License.
+This exception does not however invalidate any other reasons why the
+executable file might be covered by the GNU General Public License. */
+
+package java.security;
+import java.io.InputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.security.cert.CertificateException;
+import java.util.Date;
+import java.util.Enumeration;
+
+/**
+   KeyStoreSpi is the Service Provider Interface (SPI) for the 
+   KeyStore class. This is the interface for providers to 
+   supply to implement a keystore for a particular keystore 
+   type.
+
+   @since JDK 1.2
+   @author Mark Benvenuto
+ */
+public abstract class KeyStoreSpi
+{
+  /**
+     Constructs a new KeyStoreSpi
+   */
+  public KeyStoreSpi()
+  {
+  }
+
+  /**
+     Returns the key associated with given alias using the 
+     supplied password.
+
+     @param alias an alias for the key to get
+     @param password password to access key with
+
+     @return the requested key, or null otherwise
+
+     @throws NoSuchAlgorithmException if there is no algorithm
+     for recovering the key
+     @throws UnrecoverableKeyException key cannot be reocovered
+     (wrong password).
+   */
+  public abstract Key engineGetKey(String alias, char[]password)
+    throws NoSuchAlgorithmException, UnrecoverableKeyException;
+
+  /**
+     Gets a Certificate chain for the specified alias.
+
+     @param alias the alias name
+
+     @return a chain of Certificates ( ordered from the user's 
+     certificate to the Certificate Authority's ) or 
+     null if the alias does not exist or there is no
+     certificate chain for the alias ( the alias refers
+     to a trusted certificate entry or there is no entry).
+   */
+  public abstract java.security.cert.
+    Certificate[] engineGetCertificateChain(String alias);
+
+
+  /**
+     Gets a Certificate for the specified alias.
+
+     If there is a trusted certificate entry then that is returned.
+     it there is a key entry with a certificate chain then the
+     first certificate is return or else null.
+
+     @param alias the alias name
+
+     @return a Certificate or null if the alias does not exist 
+     or there is no certificate for the alias
+   */
+  public abstract java.security.cert.
+    Certificate engineGetCertificate(String alias);
+
+  /**
+     Gets entry creation date for the specified alias.
+
+     @param alias the alias name
+
+     @returns the entry creation date or null
+   */
+  public abstract Date engineGetCreationDate(String alias);
+
+  /**
+     Assign the key to the alias in the keystore, protecting it
+     with the given password. It will overwrite an existing 
+     entry and if the key is a PrivateKey, also add the 
+     certificate chain representing the corresponding public key.
+
+     @param alias the alias name
+     @param key the key to add
+     @password the password to protect with
+     @param chain the certificate chain for the corresponding
+     public key
+
+     @throws KeyStoreException if it fails
+   */
+  public abstract void engineSetKeyEntry(String alias, Key key,
+					 char[]password,
+					 java.security.cert.
+					 Certificate[]chain) throws
+    KeyStoreException;
+
+  /**
+     Assign the key to the alias in the keystore. It will overwrite
+     an existing entry and if the key is a PrivateKey, also 
+     add the certificate chain representing the corresponding 
+     public key.
+
+     @param alias the alias name
+     @param key the key to add
+     @param chain the certificate chain for the corresponding
+     public key
+
+     @throws KeyStoreException if it fails
+   */
+  public abstract void engineSetKeyEntry(String alias, byte[]key,
+					 java.security.cert.
+					 Certificate[]chain) throws
+    KeyStoreException;
+
+
+  /**
+     Assign the certificate to the alias in the keystore. It 
+     will overwrite an existing entry.
+
+     @param alias the alias name
+     @param cert the certificate to add
+
+     @throws KeyStoreException if it fails
+   */
+  public abstract void engineSetCertificateEntry(String alias,
+						 java.security.cert.
+						 Certificate cert) throws
+    KeyStoreException;
+
+  /**
+     Deletes the entry for the specified entry.
+
+     @param alias the alias name
+
+     @throws KeyStoreException if it fails
+   */
+  public abstract void engineDeleteEntry(String alias)
+    throws KeyStoreException;
+
+  /**
+     Generates a list of all the aliases in the keystore.
+
+     @return an Enumeration of the aliases
+   */
+  public abstract Enumeration engineAliases();
+
+  /**
+     Determines if the keystore contains the specified alias.
+
+     @param alias the alias name
+
+     @return true if it contains the alias, false otherwise
+   */
+  public abstract boolean engineContainsAlias(String alias);
+
+  /**
+     Returns the number of entries in the keystore.
+
+     @returns the number of keystore entries.
+   */
+  public abstract int engineSize();
+
+  /**
+     Determines if the keystore contains a key entry for 
+     the specified alias.
+
+     @param alias the alias name
+
+     @return true if it is a key entry, false otherwise
+   */
+  public abstract boolean engineIsKeyEntry(String alias);
+
+  /**
+     Determines if the keystore contains a certificate entry for 
+     the specified alias.
+
+     @param alias the alias name
+
+     @return true if it is a certificate entry, false otherwise
+   */
+  public abstract boolean engineIsCertificateEntry(String alias);
+
+  /**
+     Determines if the keystore contains the specified certificate 
+     entry and returns the alias.
+
+     It checks every entry and for a key entry checks only the
+     first certificate in the chain.
+
+     @param cert Certificate to look for
+
+     @return alias of first matching certificate, null if it 
+     does not exist.
+   */
+  public abstract String engineGetCertificateAlias(java.security.cert.
+						   Certificate cert);
+
+  /**
+     Stores the keystore in the specified output stream and it
+     uses the specified key it keep it secure.
+
+     @param stream the output stream to save the keystore to
+     @param password the password to protect the keystore integrity with
+
+     @throws IOException if an I/O error occurs.
+     @throws NoSuchAlgorithmException the data integrity algorithm 
+     used cannot be found.
+     @throws CertificateException if any certificates could not be
+     stored in the output stream.
+   */
+  public abstract void engineStore(OutputStream stream, char[]password)
+    throws IOException, NoSuchAlgorithmException, CertificateException;
+
+
+  /**
+     Loads the keystore from the specified input stream and it
+     uses the specified password to check for integrity if supplied.
+
+     @param stream the input stream to load the keystore from
+     @param password the password to check the keystore integrity with
+
+     @throws IOException if an I/O error occurs.
+     @throws NoSuchAlgorithmException the data integrity algorithm 
+     used cannot be found.
+     @throws CertificateException if any certificates could not be
+     stored in the output stream.
+   */
+  public abstract void engineLoad(InputStream stream, char[]password)
+    throws IOException, NoSuchAlgorithmException, CertificateException;
+}