author | valeriep |
Tue, 19 Nov 2013 15:29:56 -0800 | |
changeset 21837 | 0c41fa97176a |
parent 16909 | 78a1749a43e2 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2004, 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.*; |
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import java.security.spec.*; |
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import javax.crypto.*; |
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import javax.crypto.spec.*; |
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/** |
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* This class implements the CMS DESede KeyWrap algorithm as defined |
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* in <a href=http://www.w3.org/TR/xmlenc-core/#sec-Alg-SymmetricKeyWrap> |
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* "XML Encryption Syntax and Processing" section 5.6.2 |
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* "CMS Triple DES Key Wrap". |
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* Note: only <code>CBC</code> mode and <code>NoPadding</code> padding |
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* scheme can be used for this algorithm. |
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* |
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* @author Valerie Peng |
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* |
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* |
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* @see DESedeCipher |
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*/ |
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public final class DESedeWrapCipher extends CipherSpi { |
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48 |
private static final byte[] IV2 = { |
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(byte) 0x4a, (byte) 0xdd, (byte) 0xa2, (byte) 0x2c, |
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(byte) 0x79, (byte) 0xe8, (byte) 0x21, (byte) 0x05 |
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}; |
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private static final int CHECKSUM_LEN = 8; |
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private static final int IV_LEN = 8; |
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|
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/* |
57 |
* internal cipher object which does the real work. |
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*/ |
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private FeedbackCipher cipher; |
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61 |
/* |
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* iv for (re-)initializing the internal cipher object. |
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*/ |
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private byte[] iv = null; |
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/* |
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* key for re-initializing the internal cipher object. |
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*/ |
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private Key cipherKey = null; |
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/* |
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* are we encrypting or decrypting? |
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*/ |
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private boolean decrypting = false; |
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76 |
/** |
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* Creates an instance of CMS DESede KeyWrap cipher with default |
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* mode, i.e. "CBC" and padding scheme, i.e. "NoPadding". |
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*/ |
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public DESedeWrapCipher() { |
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cipher = new CipherBlockChaining(new DESedeCrypt()); |
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} |
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/** |
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* Sets the mode of this cipher. Only "CBC" mode is accepted for this |
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* cipher. |
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* |
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* @param mode the cipher mode. |
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* |
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* @exception NoSuchAlgorithmException if the requested cipher mode |
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* is not "CBC". |
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*/ |
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protected void engineSetMode(String mode) |
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throws NoSuchAlgorithmException { |
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if (!mode.equalsIgnoreCase("CBC")) { |
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throw new NoSuchAlgorithmException(mode + " cannot be used"); |
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} |
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} |
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/** |
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* Sets the padding mechanism of this cipher. Only "NoPadding" schmem |
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* is accepted for this cipher. |
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* |
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* @param padding the padding mechanism. |
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* |
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* @exception NoSuchPaddingException if the requested padding mechanism |
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* is not "NoPadding". |
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*/ |
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protected void engineSetPadding(String padding) |
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throws NoSuchPaddingException { |
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111 |
if (!padding.equalsIgnoreCase("NoPadding")) { |
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throw new NoSuchPaddingException(padding + " cannot be used"); |
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} |
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} |
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116 |
/** |
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117 |
* Returns the block size (in bytes), i.e. 8 bytes. |
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* |
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* @return the block size (in bytes), i.e. 8 bytes. |
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*/ |
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protected int engineGetBlockSize() { |
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return DESConstants.DES_BLOCK_SIZE; |
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} |
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125 |
/** |
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126 |
* Returns the length in bytes that an output buffer would need to be |
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* given the input length <code>inputLen</code> (in bytes). |
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* |
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* <p>The actual output length of the next <code>update</code> or |
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* <code>doFinal</code> call may be smaller than the length returned |
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* by this method. |
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* |
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* @param inputLen the input length (in bytes). |
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* |
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* @return the required output buffer size (in bytes). |
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*/ |
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137 |
protected int engineGetOutputSize(int inputLen) { |
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138 |
// can only return an upper-limit if not initialized yet. |
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int result = 0; |
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if (decrypting) { |
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141 |
result = inputLen - 16; // CHECKSUM_LEN + IV_LEN; |
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} else { |
143 |
result = inputLen + 16; |
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} |
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return (result < 0? 0:result); |
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} |
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148 |
/** |
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* Returns the initialization vector (IV) in a new buffer. |
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* |
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* @return the initialization vector, or null if the underlying |
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* algorithm does not use an IV, or if the IV has not yet |
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* been set. |
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*/ |
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protected byte[] engineGetIV() { |
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return (iv == null) ? null : iv.clone(); |
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} |
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159 |
/** |
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* Initializes this cipher with a key and a source of randomness. |
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* |
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* <p>The cipher only supports the following two operation modes:<b> |
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* Cipher.WRAP_MODE, and <b> |
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* Cipher.UNWRAP_MODE. |
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* <p>For modes other than the above two, UnsupportedOperationException |
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* will be thrown. |
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* <p>If this cipher requires an initialization vector (IV), it will get |
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* it from <code>random</code>. |
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* |
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* @param opmode the operation mode of this cipher. Only |
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* <code>WRAP_MODE</code> or <code>UNWRAP_MODE</code>) are accepted. |
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* @param key the secret key. |
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* @param random the source of randomness. |
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* |
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* @exception InvalidKeyException if the given key is inappropriate |
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* or if parameters are required but not supplied. |
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*/ |
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protected void engineInit(int opmode, Key key, SecureRandom random) |
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179 |
throws InvalidKeyException { |
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180 |
try { |
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engineInit(opmode, key, (AlgorithmParameterSpec) null, random); |
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} catch (InvalidAlgorithmParameterException iape) { |
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// should never happen |
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InvalidKeyException ike = |
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new InvalidKeyException("Parameters required"); |
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ike.initCause(iape); |
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throw ike; |
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} |
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} |
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/** |
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* Initializes this cipher with a key, a set of algorithm parameters, |
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* and a source of randomness. |
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* |
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* <p>The cipher only supports the following two operation modes:<b> |
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* Cipher.WRAP_MODE, and <b> |
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* Cipher.UNWRAP_MODE. |
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* <p>For modes other than the above two, UnsupportedOperationException |
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* will be thrown. |
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* <p>If this cipher requires an initialization vector (IV), it will get |
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201 |
* it from <code>random</code>. |
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* |
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203 |
* @param opmode the operation mode of this cipher. Only |
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* <code>WRAP_MODE</code> or <code>UNWRAP_MODE</code>) are accepted. |
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* @param key the secret key. |
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206 |
* @param params the algorithm parameters. |
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* @param random the source of randomness. |
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* |
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209 |
* @exception InvalidKeyException if the given key is inappropriate. |
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210 |
* @exception InvalidAlgorithmParameterException if the given algorithm |
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211 |
* parameters are inappropriate for this cipher. |
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212 |
*/ |
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protected void engineInit(int opmode, Key key, |
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AlgorithmParameterSpec params, |
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SecureRandom random) |
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216 |
throws InvalidKeyException, InvalidAlgorithmParameterException { |
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byte[] currIv = null; |
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218 |
if (opmode == Cipher.WRAP_MODE) { |
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219 |
decrypting = false; |
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220 |
if (params == null) { |
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221 |
iv = new byte[IV_LEN]; |
2 | 222 |
if (random == null) { |
15010 | 223 |
random = SunJCE.getRandom(); |
2 | 224 |
} |
225 |
random.nextBytes(iv); |
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226 |
} |
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227 |
else if (params instanceof IvParameterSpec) { |
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228 |
iv = ((IvParameterSpec) params).getIV(); |
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229 |
} else { |
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230 |
throw new InvalidAlgorithmParameterException |
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("Wrong parameter type: IV expected"); |
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232 |
} |
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233 |
currIv = iv; |
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234 |
} else if (opmode == Cipher.UNWRAP_MODE) { |
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235 |
if (params != null) { |
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236 |
throw new InvalidAlgorithmParameterException |
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237 |
("No parameter accepted for unwrapping keys"); |
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238 |
} |
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239 |
iv = null; |
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240 |
decrypting = true; |
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241 |
currIv = IV2; |
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242 |
} else { |
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243 |
throw new UnsupportedOperationException("This cipher can " + |
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"only be used for key wrapping and unwrapping"); |
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245 |
} |
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246 |
cipher.init(decrypting, key.getAlgorithm(), key.getEncoded(), |
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currIv); |
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248 |
cipherKey = key; |
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} |
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||
251 |
/** |
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252 |
* Initializes this cipher with a key, a set of algorithm parameters, |
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253 |
* and a source of randomness. |
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254 |
* |
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255 |
* <p>The cipher only supports the following two operation modes:<b> |
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256 |
* Cipher.WRAP_MODE, and <b> |
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257 |
* Cipher.UNWRAP_MODE. |
|
258 |
* <p>For modes other than the above two, UnsupportedOperationException |
|
259 |
* will be thrown. |
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260 |
* <p>If this cipher requires an initialization vector (IV), it will get |
|
261 |
* it from <code>random</code>. |
|
262 |
* |
|
263 |
* @param opmode the operation mode of this cipher. Only |
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264 |
* <code>WRAP_MODE</code> or <code>UNWRAP_MODE</code>) are accepted. |
|
265 |
* @param key the secret key. |
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266 |
* @param params the algorithm parameters. |
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267 |
* @param random the source of randomness. |
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268 |
* |
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269 |
* @exception InvalidKeyException if the given key is inappropriate. |
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270 |
* @exception InvalidAlgorithmParameterException if the given algorithm |
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271 |
* parameters are inappropriate for this cipher. |
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272 |
*/ |
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273 |
protected void engineInit(int opmode, Key key, |
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274 |
AlgorithmParameters params, |
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275 |
SecureRandom random) |
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276 |
throws InvalidKeyException, InvalidAlgorithmParameterException { |
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277 |
IvParameterSpec ivSpec = null; |
|
278 |
if (params != null) { |
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279 |
try { |
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280 |
DESedeParameters paramsEng = new DESedeParameters(); |
|
281 |
paramsEng.engineInit(params.getEncoded()); |
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282 |
ivSpec = paramsEng.engineGetParameterSpec(IvParameterSpec.class); |
2 | 283 |
} catch (Exception ex) { |
284 |
InvalidAlgorithmParameterException iape = |
|
285 |
new InvalidAlgorithmParameterException |
|
286 |
("Wrong parameter type: IV expected"); |
|
287 |
iape.initCause(ex); |
|
288 |
throw iape; |
|
289 |
} |
|
290 |
} |
|
291 |
engineInit(opmode, key, ivSpec, random); |
|
292 |
} |
|
293 |
||
294 |
/** |
|
295 |
* This operation is not supported by this cipher. |
|
296 |
* Since it's impossible to initialize this cipher given the |
|
297 |
* current Cipher.engineInit(...) implementation, |
|
298 |
* IllegalStateException will always be thrown upon invocation. |
|
299 |
* |
|
300 |
* @param in the input buffer. |
|
301 |
* @param inOffset the offset in <code>in</code> where the input |
|
302 |
* starts. |
|
303 |
* @param inLen the input length. |
|
304 |
* |
|
305 |
* @return n/a. |
|
306 |
* |
|
307 |
* @exception IllegalStateException upon invocation of this method. |
|
308 |
*/ |
|
309 |
protected byte[] engineUpdate(byte[] in, int inOffset, int inLen) { |
|
310 |
throw new IllegalStateException("Cipher has not been initialized"); |
|
311 |
} |
|
312 |
||
313 |
/** |
|
314 |
* This operation is not supported by this cipher. |
|
315 |
* Since it's impossible to initialize this cipher given the |
|
316 |
* current Cipher.engineInit(...) implementation, |
|
317 |
* IllegalStateException will always be thrown upon invocation. |
|
318 |
* |
|
319 |
* @param in the input buffer. |
|
320 |
* @param inOffset the offset in <code>in</code> where the input |
|
321 |
* starts. |
|
322 |
* @param inLen the input length. |
|
323 |
* @param out the buffer for the result. |
|
324 |
* @param outOffset the offset in <code>out</code> where the result |
|
325 |
* is stored. |
|
326 |
* |
|
327 |
* @return n/a. |
|
328 |
* |
|
329 |
* @exception IllegalStateException upon invocation of this method. |
|
330 |
*/ |
|
331 |
protected int engineUpdate(byte[] in, int inOffset, int inLen, |
|
332 |
byte[] out, int outOffset) |
|
333 |
throws ShortBufferException { |
|
334 |
throw new IllegalStateException("Cipher has not been initialized"); |
|
335 |
} |
|
336 |
||
337 |
/** |
|
338 |
* This operation is not supported by this cipher. |
|
339 |
* Since it's impossible to initialize this cipher given the |
|
340 |
* current Cipher.engineInit(...) implementation, |
|
341 |
* IllegalStateException will always be thrown upon invocation. |
|
342 |
* |
|
343 |
* @param in the input buffer. |
|
344 |
* @param inOffset the offset in <code>in</code> where the input |
|
345 |
* starts. |
|
346 |
* @param inLen the input length. |
|
347 |
* |
|
348 |
* @return the new buffer with the result. |
|
349 |
* |
|
350 |
* @exception IllegalStateException upon invocation of this method. |
|
351 |
*/ |
|
352 |
protected byte[] engineDoFinal(byte[] in, int inOffset, int inLen) |
|
353 |
throws IllegalBlockSizeException, BadPaddingException { |
|
354 |
throw new IllegalStateException("Cipher has not been initialized"); |
|
355 |
} |
|
356 |
||
357 |
/** |
|
358 |
* This operation is not supported by this cipher. |
|
359 |
* Since it's impossible to initialize this cipher given the |
|
360 |
* current Cipher.engineInit(...) implementation, |
|
361 |
* IllegalStateException will always be thrown upon invocation. |
|
362 |
* |
|
363 |
* @param in the input buffer. |
|
364 |
* @param inOffset the offset in <code>in</code> where the input |
|
365 |
* starts. |
|
366 |
* @param inLen the input length. |
|
367 |
* @param out the buffer for the result. |
|
368 |
* @param outOffset the ofset in <code>out</code> where the result |
|
369 |
* is stored. |
|
370 |
* |
|
371 |
* @return the number of bytes stored in <code>out</code>. |
|
372 |
* |
|
373 |
* @exception IllegalStateException upon invocation of this method. |
|
374 |
*/ |
|
375 |
protected int engineDoFinal(byte[] input, int inputOffset, int inputLen, |
|
376 |
byte[] output, int outputOffset) |
|
377 |
throws IllegalBlockSizeException, ShortBufferException, |
|
378 |
BadPaddingException { |
|
379 |
throw new IllegalStateException("Cipher has not been initialized"); |
|
380 |
} |
|
381 |
||
382 |
/** |
|
383 |
* Returns the parameters used with this cipher. |
|
384 |
* Note that null maybe returned if this cipher does not use any |
|
385 |
* parameters or when it has not be set, e.g. initialized with |
|
386 |
* UNWRAP_MODE but wrapped key data has not been given. |
|
387 |
* |
|
388 |
* @return the parameters used with this cipher; can be null. |
|
389 |
*/ |
|
390 |
protected AlgorithmParameters engineGetParameters() { |
|
391 |
AlgorithmParameters params = null; |
|
392 |
if (iv != null) { |
|
393 |
String algo = cipherKey.getAlgorithm(); |
|
394 |
try { |
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|
395 |
params = AlgorithmParameters.getInstance(algo, |
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|
396 |
SunJCE.getInstance()); |
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|
397 |
params.init(new IvParameterSpec(iv)); |
2 | 398 |
} catch (NoSuchAlgorithmException nsae) { |
399 |
// should never happen |
|
400 |
throw new RuntimeException("Cannot find " + algo + |
|
401 |
" AlgorithmParameters implementation in SunJCE provider"); |
|
402 |
} catch (InvalidParameterSpecException ipse) { |
|
403 |
// should never happen |
|
404 |
throw new RuntimeException("IvParameterSpec not supported"); |
|
405 |
} |
|
406 |
} |
|
407 |
return params; |
|
408 |
} |
|
409 |
||
410 |
/** |
|
411 |
* Returns the key size of the given key object in number of bits. |
|
412 |
* This cipher always return the same key size as the DESede ciphers. |
|
413 |
* |
|
414 |
* @param key the key object. |
|
415 |
* |
|
416 |
* @return the "effective" key size of the given key object. |
|
417 |
* |
|
418 |
* @exception InvalidKeyException if <code>key</code> is invalid. |
|
419 |
*/ |
|
420 |
protected int engineGetKeySize(Key key) throws InvalidKeyException { |
|
421 |
byte[] encoded = key.getEncoded(); |
|
422 |
if (encoded.length != 24) { |
|
423 |
throw new InvalidKeyException("Invalid key length: " + |
|
424 |
encoded.length + " bytes"); |
|
425 |
} |
|
426 |
// Return the effective key length |
|
427 |
return 112; |
|
428 |
} |
|
429 |
||
430 |
/** |
|
431 |
* Wrap a key. |
|
432 |
* |
|
433 |
* @param key the key to be wrapped. |
|
434 |
* |
|
435 |
* @return the wrapped key. |
|
436 |
* |
|
437 |
* @exception IllegalBlockSizeException if this cipher is a block |
|
438 |
* cipher, no padding has been requested, and the length of the |
|
439 |
* encoding of the key to be wrapped is not a |
|
440 |
* multiple of the block size. |
|
441 |
* |
|
442 |
* @exception InvalidKeyException if it is impossible or unsafe to |
|
443 |
* wrap the key with this cipher (e.g., a hardware protected key is |
|
444 |
* being passed to a software only cipher). |
|
445 |
*/ |
|
446 |
protected byte[] engineWrap(Key key) |
|
447 |
throws IllegalBlockSizeException, InvalidKeyException { |
|
448 |
byte[] keyVal = key.getEncoded(); |
|
449 |
if ((keyVal == null) || (keyVal.length == 0)) { |
|
450 |
throw new InvalidKeyException("Cannot get an encoding of " + |
|
451 |
"the key to be wrapped"); |
|
452 |
} |
|
453 |
||
454 |
byte[] cks = getChecksum(keyVal); |
|
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455 |
byte[] in = new byte[keyVal.length + CHECKSUM_LEN]; |
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456 |
System.arraycopy(keyVal, 0, in, 0, keyVal.length); |
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|
457 |
System.arraycopy(cks, 0, in, keyVal.length, CHECKSUM_LEN); |
2 | 458 |
|
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|
459 |
byte[] out = new byte[iv.length + in.length]; |
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|
460 |
System.arraycopy(iv, 0, out, 0, iv.length); |
2 | 461 |
|
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462 |
cipher.encrypt(in, 0, in.length, out, iv.length); |
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463 |
|
2 | 464 |
// reverse the array content |
465 |
for (int i = 0; i < out.length/2; i++) { |
|
466 |
byte temp = out[i]; |
|
467 |
out[i] = out[out.length-1-i]; |
|
468 |
out[out.length-1-i] = temp; |
|
469 |
} |
|
470 |
try { |
|
471 |
cipher.init(false, cipherKey.getAlgorithm(), |
|
472 |
cipherKey.getEncoded(), IV2); |
|
473 |
} catch (InvalidKeyException ike) { |
|
474 |
// should never happen |
|
475 |
throw new RuntimeException("Internal cipher key is corrupted"); |
|
476 |
} |
|
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|
477 |
byte[] out2 = new byte[out.length]; |
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|
478 |
cipher.encrypt(out, 0, out.length, out2, 0); |
2 | 479 |
|
480 |
// restore cipher state to prior to this call |
|
481 |
try { |
|
482 |
cipher.init(decrypting, cipherKey.getAlgorithm(), |
|
483 |
cipherKey.getEncoded(), iv); |
|
484 |
} catch (InvalidKeyException ike) { |
|
485 |
// should never happen |
|
486 |
throw new RuntimeException("Internal cipher key is corrupted"); |
|
487 |
} |
|
21837
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|
488 |
return out2; |
2 | 489 |
} |
490 |
||
491 |
/** |
|
492 |
* Unwrap a previously wrapped key. |
|
493 |
* |
|
494 |
* @param wrappedKey the key to be unwrapped. |
|
495 |
* |
|
496 |
* @param wrappedKeyAlgorithm the algorithm the wrapped key is for. |
|
497 |
* |
|
498 |
* @param wrappedKeyType the type of the wrapped key. |
|
499 |
* This is one of <code>Cipher.SECRET_KEY</code>, |
|
500 |
* <code>Cipher.PRIVATE_KEY</code>, or <code>Cipher.PUBLIC_KEY</code>. |
|
501 |
* |
|
502 |
* @return the unwrapped key. |
|
503 |
* |
|
504 |
* @exception NoSuchAlgorithmException if no installed providers |
|
505 |
* can create keys of type <code>wrappedKeyType</code> for the |
|
506 |
* <code>wrappedKeyAlgorithm</code>. |
|
507 |
* |
|
508 |
* @exception InvalidKeyException if <code>wrappedKey</code> does not |
|
509 |
* represent a wrapped key of type <code>wrappedKeyType</code> for |
|
510 |
* the <code>wrappedKeyAlgorithm</code>. |
|
511 |
*/ |
|
512 |
protected Key engineUnwrap(byte[] wrappedKey, |
|
513 |
String wrappedKeyAlgorithm, |
|
514 |
int wrappedKeyType) |
|
515 |
throws InvalidKeyException, NoSuchAlgorithmException { |
|
516 |
if (wrappedKey.length == 0) { |
|
517 |
throw new InvalidKeyException("The wrapped key is empty"); |
|
518 |
} |
|
519 |
byte[] buffer = new byte[wrappedKey.length]; |
|
520 |
cipher.decrypt(wrappedKey, 0, wrappedKey.length, buffer, 0); |
|
521 |
||
522 |
// reverse array content |
|
523 |
for (int i = 0; i < buffer.length/2; i++) { |
|
524 |
byte temp = buffer[i]; |
|
525 |
buffer[i] = buffer[buffer.length-1-i]; |
|
526 |
buffer[buffer.length-1-i] = temp; |
|
527 |
} |
|
21837
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diff
changeset
|
528 |
iv = new byte[IV_LEN]; |
2 | 529 |
System.arraycopy(buffer, 0, iv, 0, iv.length); |
530 |
cipher.init(true, cipherKey.getAlgorithm(), cipherKey.getEncoded(), |
|
531 |
iv); |
|
21837
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8026943: SQE test jce/Global/Cipher/SameBuffer failed
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parents:
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diff
changeset
|
532 |
byte[] buffer2 = new byte[buffer.length - iv.length]; |
0c41fa97176a
8026943: SQE test jce/Global/Cipher/SameBuffer failed
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parents:
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diff
changeset
|
533 |
cipher.decrypt(buffer, iv.length, buffer2.length, |
0c41fa97176a
8026943: SQE test jce/Global/Cipher/SameBuffer failed
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parents:
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diff
changeset
|
534 |
buffer2, 0); |
0c41fa97176a
8026943: SQE test jce/Global/Cipher/SameBuffer failed
valeriep
parents:
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diff
changeset
|
535 |
int keyValLen = buffer2.length - CHECKSUM_LEN; |
0c41fa97176a
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parents:
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diff
changeset
|
536 |
byte[] cks = getChecksum(buffer2, 0, keyValLen); |
0c41fa97176a
8026943: SQE test jce/Global/Cipher/SameBuffer failed
valeriep
parents:
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diff
changeset
|
537 |
int offset = keyValLen; |
0c41fa97176a
8026943: SQE test jce/Global/Cipher/SameBuffer failed
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parents:
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diff
changeset
|
538 |
for (int i = 0; i < CHECKSUM_LEN; i++) { |
0c41fa97176a
8026943: SQE test jce/Global/Cipher/SameBuffer failed
valeriep
parents:
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diff
changeset
|
539 |
if (buffer2[offset + i] != cks[i]) { |
2 | 540 |
throw new InvalidKeyException("Checksum comparison failed"); |
541 |
} |
|
542 |
} |
|
543 |
// restore cipher state to prior to this call |
|
544 |
cipher.init(decrypting, cipherKey.getAlgorithm(), |
|
545 |
cipherKey.getEncoded(), IV2); |
|
21837
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valeriep
parents:
16909
diff
changeset
|
546 |
byte[] out = new byte[keyValLen]; |
0c41fa97176a
8026943: SQE test jce/Global/Cipher/SameBuffer failed
valeriep
parents:
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diff
changeset
|
547 |
System.arraycopy(buffer2, 0, out, 0, keyValLen); |
2 | 548 |
return ConstructKeys.constructKey(out, wrappedKeyAlgorithm, |
549 |
wrappedKeyType); |
|
550 |
} |
|
551 |
||
552 |
private static final byte[] getChecksum(byte[] in) { |
|
553 |
return getChecksum(in, 0, in.length); |
|
554 |
} |
|
555 |
private static final byte[] getChecksum(byte[] in, int offset, int len) { |
|
556 |
MessageDigest md = null; |
|
557 |
try { |
|
558 |
md = MessageDigest.getInstance("SHA1"); |
|
559 |
} catch (NoSuchAlgorithmException nsae) { |
|
560 |
throw new RuntimeException("SHA1 message digest not available"); |
|
561 |
} |
|
562 |
md.update(in, offset, len); |
|
21837
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valeriep
parents:
16909
diff
changeset
|
563 |
byte[] cks = new byte[CHECKSUM_LEN]; |
2 | 564 |
System.arraycopy(md.digest(), 0, cks, 0, cks.length); |
565 |
return cks; |
|
566 |
} |
|
567 |
} |