author | vinnie |
Thu, 11 Apr 2013 17:57:08 +0100 | |
changeset 16909 | 78a1749a43e2 |
parent 5506 | 202f599c92aa |
permissions | -rw-r--r-- |
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/* |
16909
78a1749a43e2
7171982: Cipher getParameters() throws RuntimeException: Cannot find SunJCE provider
vinnie
parents:
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changeset
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* Copyright (c) 1999, 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 java.security.Key; |
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import java.security.PublicKey; |
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import java.security.PrivateKey; |
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import java.security.KeyFactory; |
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import java.security.InvalidKeyException; |
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import java.security.NoSuchProviderException; |
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import java.security.NoSuchAlgorithmException; |
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import java.security.spec.PKCS8EncodedKeySpec; |
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import java.security.spec.X509EncodedKeySpec; |
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import java.security.spec.InvalidKeySpecException; |
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import javax.crypto.Cipher; |
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import javax.crypto.CipherSpi; |
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import javax.crypto.SecretKey; |
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import javax.crypto.IllegalBlockSizeException; |
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import javax.crypto.BadPaddingException; |
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import javax.crypto.spec.SecretKeySpec; |
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/** |
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* This class entends the javax.crypto.CipherSpi class with a concrete |
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* implementation of the methods for wrapping and unwrapping |
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* keys. |
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* |
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* @author Sharon Liu |
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* |
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* |
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* @see javax.crypto.CipherSpi |
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* @see BlowfishCipher |
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* @see DESCipher |
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* @see PBEWithMD5AndDESCipher |
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*/ |
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public abstract class CipherWithWrappingSpi extends CipherSpi { |
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/** |
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* Wrap a key. |
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* |
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* @param key the key to be wrapped. |
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* |
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* @return the wrapped key. |
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* |
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* @exception IllegalBlockSizeException if this cipher is a block |
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* cipher, no padding has been requested, and the length of the |
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* encoding of the key to be wrapped is not a |
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* multiple of the block size. |
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* |
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* @exception InvalidKeyException if it is impossible or unsafe to |
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* wrap the key with this cipher (e.g., a hardware protected key is |
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* being passed to a software only cipher). |
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*/ |
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protected final byte[] engineWrap(Key key) |
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throws IllegalBlockSizeException, InvalidKeyException |
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{ |
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byte[] result = null; |
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try { |
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byte[] encodedKey = key.getEncoded(); |
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if ((encodedKey == null) || (encodedKey.length == 0)) { |
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throw new InvalidKeyException("Cannot get an encoding of " + |
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"the key to be wrapped"); |
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} |
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result = engineDoFinal(encodedKey, 0, encodedKey.length); |
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} catch (BadPaddingException e) { |
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// Should never happen |
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} |
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return result; |
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} |
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/** |
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* Unwrap a previously wrapped key. |
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* |
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* @param wrappedKey the key to be unwrapped. |
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* |
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* @param wrappedKeyAlgorithm the algorithm the wrapped key is for. |
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* |
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* @param wrappedKeyType the type of the wrapped key. |
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* This is one of <code>Cipher.SECRET_KEY</code>, |
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* <code>Cipher.PRIVATE_KEY</code>, or <code>Cipher.PUBLIC_KEY</code>. |
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* |
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* @return the unwrapped key. |
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* |
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* @exception InvalidKeyException if <code>wrappedKey</code> does not |
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* represent a wrapped key, or if the algorithm associated with the |
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* wrapped key is different from <code>wrappedKeyAlgorithm</code> |
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* and/or its key type is different from <code>wrappedKeyType</code>. |
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* |
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* @exception NoSuchAlgorithmException if no installed providers |
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* can create keys for the <code>wrappedKeyAlgorithm</code>. |
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*/ |
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protected final Key engineUnwrap(byte[] wrappedKey, |
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String wrappedKeyAlgorithm, |
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int wrappedKeyType) |
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throws InvalidKeyException, NoSuchAlgorithmException |
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{ |
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byte[] encodedKey; |
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Key result = null; |
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try { |
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encodedKey = engineDoFinal(wrappedKey, 0, |
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wrappedKey.length); |
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} catch (BadPaddingException ePadding) { |
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throw new InvalidKeyException(); |
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} catch (IllegalBlockSizeException eBlockSize) { |
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throw new InvalidKeyException(); |
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} |
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switch (wrappedKeyType) { |
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case Cipher.SECRET_KEY: |
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result = constructSecretKey(encodedKey, |
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wrappedKeyAlgorithm); |
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break; |
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case Cipher.PRIVATE_KEY: |
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result = constructPrivateKey(encodedKey, |
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wrappedKeyAlgorithm); |
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break; |
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case Cipher.PUBLIC_KEY: |
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result = constructPublicKey(encodedKey, |
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wrappedKeyAlgorithm); |
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break; |
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} |
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return result; |
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} |
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/** |
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* Construct a public key from its encoding. |
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* |
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* @param encodedKey the encoding of a public key. |
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* |
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* @param encodedKeyAlgorithm the algorithm the encodedKey is for. |
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* |
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* @return a public key constructed from the encodedKey. |
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*/ |
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private final PublicKey constructPublicKey(byte[] encodedKey, |
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String encodedKeyAlgorithm) |
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throws InvalidKeyException, NoSuchAlgorithmException |
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{ |
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PublicKey key = null; |
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try { |
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KeyFactory keyFactory = |
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16909
78a1749a43e2
7171982: Cipher getParameters() throws RuntimeException: Cannot find SunJCE provider
vinnie
parents:
5506
diff
changeset
|
172 |
KeyFactory.getInstance(encodedKeyAlgorithm, |
78a1749a43e2
7171982: Cipher getParameters() throws RuntimeException: Cannot find SunJCE provider
vinnie
parents:
5506
diff
changeset
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SunJCE.getInstance()); |
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X509EncodedKeySpec keySpec = new X509EncodedKeySpec(encodedKey); |
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key = keyFactory.generatePublic(keySpec); |
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} catch (NoSuchAlgorithmException nsae) { |
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// Try to see whether there is another |
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// provider which supports this algorithm |
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try { |
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KeyFactory keyFactory = |
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KeyFactory.getInstance(encodedKeyAlgorithm); |
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X509EncodedKeySpec keySpec = |
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new X509EncodedKeySpec(encodedKey); |
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key = keyFactory.generatePublic(keySpec); |
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} catch (NoSuchAlgorithmException nsae2) { |
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throw new NoSuchAlgorithmException("No installed providers " + |
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"can create keys for the " + |
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encodedKeyAlgorithm + |
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"algorithm"); |
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} catch (InvalidKeySpecException ikse2) { |
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// Should never happen. |
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} |
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} catch (InvalidKeySpecException ikse) { |
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// Should never happen. |
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} |
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return key; |
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} |
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/** |
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* Construct a private key from its encoding. |
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* |
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* @param encodedKey the encoding of a private key. |
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* |
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* @param encodedKeyAlgorithm the algorithm the wrapped key is for. |
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* |
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* @return a private key constructed from the encodedKey. |
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*/ |
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private final PrivateKey constructPrivateKey(byte[] encodedKey, |
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String encodedKeyAlgorithm) |
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throws InvalidKeyException, NoSuchAlgorithmException |
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{ |
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PrivateKey key = null; |
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try { |
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KeyFactory keyFactory = |
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16909
78a1749a43e2
7171982: Cipher getParameters() throws RuntimeException: Cannot find SunJCE provider
vinnie
parents:
5506
diff
changeset
|
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KeyFactory.getInstance(encodedKeyAlgorithm, |
78a1749a43e2
7171982: Cipher getParameters() throws RuntimeException: Cannot find SunJCE provider
vinnie
parents:
5506
diff
changeset
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SunJCE.getInstance()); |
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PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(encodedKey); |
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return keyFactory.generatePrivate(keySpec); |
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} catch (NoSuchAlgorithmException nsae) { |
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// Try to see whether there is another |
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// provider which supports this algorithm |
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try { |
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KeyFactory keyFactory = |
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KeyFactory.getInstance(encodedKeyAlgorithm); |
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PKCS8EncodedKeySpec keySpec = |
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new PKCS8EncodedKeySpec(encodedKey); |
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key = keyFactory.generatePrivate(keySpec); |
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} catch (NoSuchAlgorithmException nsae2) { |
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throw new NoSuchAlgorithmException("No installed providers " + |
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"can create keys for the " + |
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encodedKeyAlgorithm + |
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"algorithm"); |
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} catch (InvalidKeySpecException ikse2) { |
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// Should never happen. |
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} |
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} catch (InvalidKeySpecException ikse) { |
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// Should never happen. |
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} |
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return key; |
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} |
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/** |
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* Construct a secret key from its encoding. |
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* |
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* @param encodedKey the encoding of a secret key. |
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* |
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* @param encodedKeyAlgorithm the algorithm the secret key is for. |
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* |
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* @return a secret key constructed from the encodedKey. |
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*/ |
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private final SecretKey constructSecretKey(byte[] encodedKey, |
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String encodedKeyAlgorithm) |
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{ |
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return (new SecretKeySpec(encodedKey, encodedKeyAlgorithm)); |
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} |
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} |