1 /*
   2  * Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.crypto.provider;
  27 
  28 import java.io.*;
  29 import java.security.AlgorithmParametersSpi;
  30 import java.security.spec.AlgorithmParameterSpec;
  31 import java.security.spec.InvalidParameterSpecException;
  32 
  33 /**
  34  * This class implements the parameter (IV) used with the Blowfish algorithm in
  35  * feedback-mode. IV is defined in the standards as follows:
  36  *
  37  * <pre>
  38  * IV ::= OCTET STRING  -- 8 octets
  39  * </pre>
  40  *
  41  * @author Jan Luehe
  42  *
  43  */
  44 
  45 public final class BlowfishParameters extends AlgorithmParametersSpi {
  46 
  47     private BlockCipherParamsCore core;
  48 
  49     public BlowfishParameters() {
  50         core = new BlockCipherParamsCore
  51             (BlowfishConstants.BLOWFISH_BLOCK_SIZE);
  52     }
  53     protected void engineInit(AlgorithmParameterSpec paramSpec)
  54         throws InvalidParameterSpecException {
  55         core.init(paramSpec);
  56     }
  57 
  58     protected void engineInit(byte[] encoded)
  59         throws IOException {
  60         core.init(encoded);
  61     }
  62 
  63     protected void engineInit(byte[] encoded, String decodingMethod)
  64         throws IOException {
  65         core.init(encoded, decodingMethod);
  66     }
  67 
  68     protected <T extends AlgorithmParameterSpec>
  69         T engineGetParameterSpec(Class<T> paramSpec)
  70         throws InvalidParameterSpecException {
  71         if (AlgorithmParameterSpec.class.isAssignableFrom(paramSpec)) {
  72             return core.getParameterSpec(paramSpec);
  73         } else {
  74             throw new InvalidParameterSpecException
  75                 ("Inappropriate parameter Specification");
  76         }
  77     }
  78 
  79     protected byte[] engineGetEncoded() throws IOException {
  80         return core.getEncoded();
  81     }
  82 
  83     protected byte[] engineGetEncoded(String encodingMethod)
  84         throws IOException {
  85         return core.getEncoded();
  86     }
  87 
  88     protected String engineToString() {
  89         return core.toString();
  90     }
  91 }