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-/* PBEKeySpec.java -- Wrapper for password-based keys.
- Copyright (C) 2004 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., 51 Franklin Street, 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 javax.crypto.spec;
-
-import java.security.spec.KeySpec;
-
-/**
- * A wrapper for a password-based key, used for password-based
- * encryption (PBE).
- *
- * <p>Examples of password-based encryption algorithms include:
- *
- * <ul>
- * <li><a href="http://www.rsasecurity.com/rsalabs/pkcs/pkcs-5/">PKCS #5
- * - Password-Based Cryptography Standard</a></li>
- * <li><a href="http://www.rsasecurity.com/rsalabs/pkcs/pkcs-12/">PKCS
- * #12 - Personal Information Exchange Syntax Standard</a></li>
- * </ul>
- *
- * @author Casey Marshall (csm@gnu.org)
- * @since 1.4
- * @see javax.crypto.SecretKeyFactory
- * @see PBEParameterSpec
- */
-public class PBEKeySpec implements KeySpec
-{
-
- // Fields.
- // ------------------------------------------------------------------------
-
- /** The iteration count. */
- private int iterationCount;
-
- /** The generated key length. */
- private int keyLength;
-
- /** The password. */
- private char[] password;
-
- /** The salt. */
- private byte[] salt;
-
- // Constructors.
- // ------------------------------------------------------------------------
-
- /**
- * Create a new PBE key spec with just a password.
- *
- * @param password The password char array.
- */
- public PBEKeySpec(char[] password)
- {
- this(password, null, 0, 0);
- }
-
- /**
- * Create a PBE key spec with a password, salt, and iteration count.
- *
- * @param password The password char array.
- * @param salt The salt bytes.
- * @param iterationCount The iteration count.
- */
- public PBEKeySpec(char[] password, byte[] salt, int iterationCount)
- {
- this(password, salt, iterationCount, 0);
- }
-
- /**
- * Create a PBE key spec with a password, salt, iteration count, and
- * key length.
- *
- * @param password The password char array.
- * @param salt The salt bytes.
- * @param iterationCount The iteration count.
- * @param keyLength The generated key length.
- */
- public PBEKeySpec(char[] password, byte[] salt, int iterationCount,
- int keyLength)
- {
- this.password = password;
- this.salt = salt;
- this.iterationCount = iterationCount;
- this.keyLength = keyLength;
- }
-
- // Instance methods.
- // ------------------------------------------------------------------------
-
- /**
- * Clear the password array by filling it with null characters.
- */
- public final void clearPassword()
- {
- if (password == null) return;
- for (int i = 0; i < password.length; i++)
- {
- password[i] = '\u0000';
- }
- }
-
- /**
- * Get the iteration count, or 0 if it has not been specified.
- *
- * @return The iteration count, or 0 if it has not been specified.
- */
- public final int getIterationCount()
- {
- return iterationCount;
- }
-
- /**
- * Get the generated key length, or 0 if it has not been specified.
- *
- * @return The key length, or 0 if it has not been specified.
- */
- public final int getKeyLength()
- {
- return keyLength;
- }
-
- /**
- * Get the password character array.
- *
- * @return The password.
- */
- public final char[] getPassword()
- {
- return password;
- }
-
- /**
- * Get the salt bytes.
- *
- * @return The salt.
- */
- public final byte[] getSalt()
- {
- return salt;
- }
-}
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