author | malenkov |
Tue, 29 Oct 2013 17:01:06 +0400 | |
changeset 21278 | ef8a3a2a72f2 |
parent 18810 | 76a7cd9041d5 |
permissions | -rw-r--r-- |
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/* |
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6755701: SunJCE DES/DESede SecretKeyFactory.generateSecret throws InvalidKeySpecExc if passed SecretKeySpec
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* Copyright (c) 1997, 2013, 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 javax.crypto.SecretKey; |
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import javax.crypto.SecretKeyFactorySpi; |
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import javax.crypto.spec.DESedeKeySpec; |
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import java.security.InvalidKeyException; |
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import java.security.spec.KeySpec; |
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import java.security.spec.InvalidKeySpecException; |
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import javax.crypto.spec.SecretKeySpec; |
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/** |
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* This class implements the DES-EDE key factory of the Sun provider. |
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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 DESedeKeyFactory extends SecretKeyFactorySpi { |
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/** |
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* Empty constructor |
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*/ |
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public DESedeKeyFactory() { |
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} |
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/** |
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* Generates a <code>SecretKey</code> object from the provided key |
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* specification (key material). |
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* |
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* @param keySpec the specification (key material) of the secret key |
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* |
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* @return the secret key |
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* |
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* @exception InvalidKeySpecException if the given key specification |
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* is inappropriate for this key factory to produce a public key. |
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*/ |
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protected SecretKey engineGenerateSecret(KeySpec keySpec) |
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throws InvalidKeySpecException { |
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try { |
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if (keySpec instanceof DESedeKeySpec) { |
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6755701: SunJCE DES/DESede SecretKeyFactory.generateSecret throws InvalidKeySpecExc if passed SecretKeySpec
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parents:
10336
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return new DESedeKey(((DESedeKeySpec)keySpec).getKey()); |
76a7cd9041d5
6755701: SunJCE DES/DESede SecretKeyFactory.generateSecret throws InvalidKeySpecExc if passed SecretKeySpec
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} |
76a7cd9041d5
6755701: SunJCE DES/DESede SecretKeyFactory.generateSecret throws InvalidKeySpecExc if passed SecretKeySpec
ascarpino
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if (keySpec instanceof SecretKeySpec) { |
76a7cd9041d5
6755701: SunJCE DES/DESede SecretKeyFactory.generateSecret throws InvalidKeySpecExc if passed SecretKeySpec
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return new DESedeKey(((SecretKeySpec)keySpec).getEncoded()); |
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} |
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parents:
10336
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throw new InvalidKeySpecException |
76a7cd9041d5
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("Inappropriate key specification"); |
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} catch (InvalidKeyException e) { |
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throw new InvalidKeySpecException(e.getMessage()); |
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} |
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} |
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/** |
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* Returns a specification (key material) of the given key |
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* in the requested format. |
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* |
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* @param key the key |
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* |
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* @param keySpec the requested format in which the key material shall be |
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* returned |
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* |
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* @return the underlying key specification (key material) in the |
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* requested format |
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* |
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* @exception InvalidKeySpecException if the requested key specification is |
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* inappropriate for the given key, or the given key cannot be processed |
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* (e.g., the given key has an unrecognized algorithm or format). |
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*/ |
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protected KeySpec engineGetKeySpec(SecretKey key, Class<?> keySpec) |
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throws InvalidKeySpecException { |
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try { |
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if ((key instanceof SecretKey) |
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&& (key.getAlgorithm().equalsIgnoreCase("DESede")) |
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&& (key.getFormat().equalsIgnoreCase("RAW"))) { |
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// Check if requested key spec is amongst the valid ones |
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if (DESedeKeySpec.class.isAssignableFrom(keySpec)) { |
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return new DESedeKeySpec(key.getEncoded()); |
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} else { |
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throw new InvalidKeySpecException |
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("Inappropriate key specification"); |
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} |
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} else { |
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throw new InvalidKeySpecException |
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("Inappropriate key format/algorithm"); |
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} |
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} catch (InvalidKeyException e) { |
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throw new InvalidKeySpecException("Secret key has wrong size"); |
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} |
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} |
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/** |
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* Translates a <code>SecretKey</code> object, whose provider may be |
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* unknown or potentially untrusted, into a corresponding |
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* <code>SecretKey</code> object of this key factory. |
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* |
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* @param key the key whose provider is unknown or untrusted |
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* |
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* @return the translated key |
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* |
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* @exception InvalidKeyException if the given key cannot be processed by |
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* this key factory. |
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*/ |
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protected SecretKey engineTranslateKey(SecretKey key) |
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throws InvalidKeyException { |
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try { |
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if ((key != null) |
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&& (key.getAlgorithm().equalsIgnoreCase("DESede")) |
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&& (key.getFormat().equalsIgnoreCase("RAW"))) { |
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// Check if key originates from this factory |
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if (key instanceof com.sun.crypto.provider.DESedeKey) { |
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return key; |
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} |
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// Convert key to spec |
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DESedeKeySpec desEdeKeySpec |
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= (DESedeKeySpec)engineGetKeySpec(key, |
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DESedeKeySpec.class); |
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// Create key from spec, and return it |
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return engineGenerateSecret(desEdeKeySpec); |
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} else { |
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throw new InvalidKeyException |
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("Inappropriate key format/algorithm"); |
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} |
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} catch (InvalidKeySpecException e) { |
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throw new InvalidKeyException("Cannot translate key"); |
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} |
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} |
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} |