feat(jdk8): move files to new folder to avoid resources compiled.
This commit is contained in:
126
jdkSrc/jdk8/javax/crypto/spec/DESedeKeySpec.java
Normal file
126
jdkSrc/jdk8/javax/crypto/spec/DESedeKeySpec.java
Normal file
@@ -0,0 +1,126 @@
|
||||
/*
|
||||
* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
|
||||
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
||||
*
|
||||
* This code is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 only, as
|
||||
* published by the Free Software Foundation. Oracle designates this
|
||||
* particular file as subject to the "Classpath" exception as provided
|
||||
* by Oracle in the LICENSE file that accompanied this code.
|
||||
*
|
||||
* This code is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
* version 2 for more details (a copy is included in the LICENSE file that
|
||||
* accompanied this code).
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License version
|
||||
* 2 along with this work; if not, write to the Free Software Foundation,
|
||||
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
||||
* or visit www.oracle.com if you need additional information or have any
|
||||
* questions.
|
||||
*/
|
||||
|
||||
package javax.crypto.spec;
|
||||
|
||||
import java.security.InvalidKeyException;
|
||||
|
||||
/**
|
||||
* This class specifies a DES-EDE ("triple-DES") key.
|
||||
*
|
||||
* @author Jan Luehe
|
||||
*
|
||||
* @since 1.4
|
||||
*/
|
||||
public class DESedeKeySpec implements java.security.spec.KeySpec {
|
||||
|
||||
/**
|
||||
* The constant which defines the length of a DESede key in bytes.
|
||||
*/
|
||||
public static final int DES_EDE_KEY_LEN = 24;
|
||||
|
||||
private byte[] key;
|
||||
|
||||
/**
|
||||
* Creates a DESedeKeySpec object using the first 24 bytes in
|
||||
* <code>key</code> as the key material for the DES-EDE key.
|
||||
*
|
||||
* <p> The bytes that constitute the DES-EDE key are those between
|
||||
* <code>key[0]</code> and <code>key[23]</code> inclusive
|
||||
*
|
||||
* @param key the buffer with the DES-EDE key material. The first
|
||||
* 24 bytes of the buffer are copied to protect against subsequent
|
||||
* modification.
|
||||
*
|
||||
* @exception NullPointerException if <code>key</code> is null.
|
||||
* @exception InvalidKeyException if the given key material is shorter
|
||||
* than 24 bytes.
|
||||
*/
|
||||
public DESedeKeySpec(byte[] key) throws InvalidKeyException {
|
||||
this(key, 0);
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a DESedeKeySpec object using the first 24 bytes in
|
||||
* <code>key</code>, beginning at <code>offset</code> inclusive,
|
||||
* as the key material for the DES-EDE key.
|
||||
*
|
||||
* <p> The bytes that constitute the DES-EDE key are those between
|
||||
* <code>key[offset]</code> and <code>key[offset+23]</code> inclusive.
|
||||
*
|
||||
* @param key the buffer with the DES-EDE key material. The first
|
||||
* 24 bytes of the buffer beginning at <code>offset</code> inclusive
|
||||
* are copied to protect against subsequent modification.
|
||||
* @param offset the offset in <code>key</code>, where the DES-EDE key
|
||||
* material starts.
|
||||
*
|
||||
* @exception NullPointerException if <code>key</code> is null.
|
||||
* @exception InvalidKeyException if the given key material, starting at
|
||||
* <code>offset</code> inclusive, is shorter than 24 bytes
|
||||
*/
|
||||
public DESedeKeySpec(byte[] key, int offset) throws InvalidKeyException {
|
||||
if (key.length - offset < 24) {
|
||||
throw new InvalidKeyException("Wrong key size");
|
||||
}
|
||||
this.key = new byte[24];
|
||||
System.arraycopy(key, offset, this.key, 0, 24);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the DES-EDE key.
|
||||
*
|
||||
* @return the DES-EDE key. Returns a new array
|
||||
* each time this method is called.
|
||||
*/
|
||||
public byte[] getKey() {
|
||||
return this.key.clone();
|
||||
}
|
||||
|
||||
/**
|
||||
* Checks if the given DES-EDE key, starting at <code>offset</code>
|
||||
* inclusive, is parity-adjusted.
|
||||
*
|
||||
* @param key a byte array which holds the key value
|
||||
* @param offset the offset into the byte array
|
||||
* @return true if the given DES-EDE key is parity-adjusted, false
|
||||
* otherwise
|
||||
*
|
||||
* @exception NullPointerException if <code>key</code> is null.
|
||||
* @exception InvalidKeyException if the given key material, starting at
|
||||
* <code>offset</code> inclusive, is shorter than 24 bytes
|
||||
*/
|
||||
public static boolean isParityAdjusted(byte[] key, int offset)
|
||||
throws InvalidKeyException {
|
||||
if (key.length - offset < 24) {
|
||||
throw new InvalidKeyException("Wrong key size");
|
||||
}
|
||||
if (DESKeySpec.isParityAdjusted(key, offset) == false
|
||||
|| DESKeySpec.isParityAdjusted(key, offset + 8) == false
|
||||
|| DESKeySpec.isParityAdjusted(key, offset + 16) == false) {
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user