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90 lines
2.9 KiB
Java
90 lines
2.9 KiB
Java
/*
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* Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.crypto.provider;
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import java.io.*;
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import java.security.AlgorithmParametersSpi;
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import java.security.spec.AlgorithmParameterSpec;
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import java.security.spec.InvalidParameterSpecException;
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/**
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* This class implements the parameter (IV) used with the Triple DES algorithm
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* in feedback-mode. IV is defined in the standards as follows:
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*
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* <pre>
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* IV ::= OCTET STRING -- 8 octets
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* </pre>
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*
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* @author Jan Luehe
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*
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*/
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public final class DESedeParameters extends AlgorithmParametersSpi {
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private BlockCipherParamsCore core;
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public DESedeParameters() {
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core = new BlockCipherParamsCore(DESConstants.DES_BLOCK_SIZE);
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}
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protected void engineInit(AlgorithmParameterSpec paramSpec)
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throws InvalidParameterSpecException {
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core.init(paramSpec);
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}
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protected void engineInit(byte[] encoded)
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throws IOException {
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core.init(encoded);
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}
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protected void engineInit(byte[] encoded, String decodingMethod)
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throws IOException {
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core.init(encoded, decodingMethod);
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}
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protected <T extends AlgorithmParameterSpec>
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T engineGetParameterSpec(Class<T> paramSpec)
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throws InvalidParameterSpecException {
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if (AlgorithmParameterSpec.class.isAssignableFrom(paramSpec)) {
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return core.getParameterSpec(paramSpec);
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} else {
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throw new InvalidParameterSpecException
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("Inappropriate parameter Specification");
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}
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}
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protected byte[] engineGetEncoded() throws IOException {
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return core.getEncoded();
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}
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protected byte[] engineGetEncoded(String encodingMethod)
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throws IOException {
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return core.getEncoded();
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}
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protected String engineToString() {
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return core.toString();
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}
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}
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