/* * Copyright (c) 2004, 2007, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */  package sun.security.krb5.internal.crypto; import sun.security.krb5.internal.crypto.dk.Des3DkCrypto;import sun.security.krb5.KrbCryptoException;import java.security.GeneralSecurityException; /** * Class with static methods for doing Triple DES operations. */public class Des3 {    private static final Des3DkCrypto CRYPTO = new Des3DkCrypto();     private Des3() {    }     public static byte[] stringToKey(char[] chars)        throws GeneralSecurityException {        return CRYPTO.stringToKey(chars);    }     public static byte[] parityFix(byte[] value)        throws GeneralSecurityException {        return CRYPTO.parityFix(value);    }     // in bytes    public static int getChecksumLength() {        return CRYPTO.getChecksumLength();    }     public static byte[] calculateChecksum(byte[] baseKey, int usage,        byte[] input, int start, int len) throws GeneralSecurityException {            return CRYPTO.calculateChecksum(baseKey, usage, input, start, len);    }     public static byte[] encrypt(byte[] baseKey, int usage,        byte[] ivec, byte[] plaintext, int start, int len)        throws GeneralSecurityException, KrbCryptoException {            return CRYPTO.encrypt(baseKey, usage, ivec, null /* new_ivec */,                plaintext, start, len);    }     /* Encrypt plaintext; do not add confounder, padding, or checksum */    public static byte[] encryptRaw(byte[] baseKey, int usage,        byte[] ivec, byte[] plaintext, int start, int len)        throws GeneralSecurityException, KrbCryptoException {        return CRYPTO.encryptRaw(baseKey, usage, ivec, plaintext, start, len);    }     public static byte[] decrypt(byte[] baseKey, int usage, byte[] ivec,        byte[] ciphertext, int start, int len)        throws GeneralSecurityException {        return CRYPTO.decrypt(baseKey, usage, ivec, ciphertext, start, len);    }     /**     * Decrypt ciphertext; do not remove confounder, padding,     * or check checksum     */    public static byte[] decryptRaw(byte[] baseKey, int usage, byte[] ivec,        byte[] ciphertext, int start, int len)        throws GeneralSecurityException {        return CRYPTO.decryptRaw(baseKey, usage, ivec, ciphertext, start, len);    }};