2362N/A * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved. 0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 0N/A * This code is free software; you can redistribute it and/or modify it 0N/A * under the terms of the GNU General Public License version 2 only, as 2362N/A * published by the Free Software Foundation. Oracle designates this 0N/A * particular file as subject to the "Classpath" exception as provided 2362N/A * by Oracle in the LICENSE file that accompanied this code. 0N/A * This code is distributed in the hope that it will be useful, but WITHOUT 0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 0N/A * version 2 for more details (a copy is included in the LICENSE file that 0N/A * accompanied this code). 0N/A * You should have received a copy of the GNU General Public License version 0N/A * 2 along with this work; if not, write to the Free Software Foundation, 0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2362N/A * or visit www.oracle.com if you need additional information or have any 0N/A * This class specifies a DES key. 0N/A * The constant which defines the length of a DES key in bytes. 0N/A * "...The first 6 keys have duals different than themselves, hence 0N/A * each is both a key and a dual giving 12 keys with duals. The last 0N/A * four keys equal their duals, and are called self-dual keys..." 0N/A * 1. E001E001F101F101 01E001E001F101F1 0N/A * 2. FE1FFE1FFEOEFEOE 1FFE1FFEOEFEOEFE 0N/A * 3. E01FE01FF10EF10E 1FE01FEOOEF10EF1 0N/A * 4. 01FE01FE01FE01FE FE01FE01FE01FE01 0N/A * 5. 011F011F010E010E 1F011F010E010E01 0N/A * 6. E0FEE0FEF1FEF1FE FEE0FEE0FEF1FEF1 0N/A * 7. 0101010101010101 0101010101010101 0N/A * 8. FEFEFEFEFEFEFEFE FEFEFEFEFEFEFEFE 0N/A * 9. E0E0E0E0F1F1F1F1 E0E0E0E0F1F1F1F1 0N/A * 10. 1F1F1F1F0E0E0E0E 1F1F1F1F0E0E0E0E 0N/A { (
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0N/A * Creates a DESKeySpec object using the first 8 bytes in 0N/A * <code>key</code> as the key material for the DES key. 0N/A * <p> The bytes that constitute the DES key are those between 0N/A * <code>key[0]</code> and <code>key[7]</code> inclusive. 0N/A * @param key the buffer with the DES key material. The first 8 bytes 0N/A * of the buffer are copied to protect against subsequent modification. 0N/A * @exception NullPointerException if the given key material is 0N/A * @exception InvalidKeyException if the given key material is shorter 0N/A * Creates a DESKeySpec object using the first 8 bytes in 0N/A * <code>key</code>, beginning at <code>offset</code> inclusive, 0N/A * as the key material for the DES key. 0N/A * <p> The bytes that constitute the DES key are those between 0N/A * <code>key[offset]</code> and <code>key[offset+7]</code> inclusive. 0N/A * @param key the buffer with the DES key material. The first 8 bytes 0N/A * of the buffer beginning at <code>offset</code> inclusive are copied 0N/A * to protect against subsequent modification. 0N/A * @param offset the offset in <code>key</code>, where the DES key 0N/A * @exception NullPointerException if the given key material is 0N/A * @exception InvalidKeyException if the given key material, starting at 0N/A * <code>offset</code> inclusive, is shorter than 8 bytes. 0N/A * Returns the DES key material. 0N/A * @return the DES key material. Returns a new array 0N/A * each time this method is called. 0N/A * Checks if the given DES key material, starting at <code>offset</code> 0N/A * inclusive, is parity-adjusted. 0N/A * @param key the buffer with the DES key material. 0N/A * @param offset the offset in <code>key</code>, where the DES key 0N/A * @return true if the given DES key material is parity-adjusted, false 0N/A * @exception InvalidKeyException if the given key material is 0N/A * <code>null</code>, or starting at <code>offset</code> inclusive, is 0N/A * shorter than 8 bytes. 0N/A * Checks if the given DES key material is weak or semi-weak. 0N/A * @param key the buffer with the DES key material. 0N/A * @param offset the offset in <code>key</code>, where the DES key 0N/A * @return true if the given DES key material is weak or semi-weak, false 0N/A * @exception InvalidKeyException if the given key material is 0N/A * <code>null</code>, or starting at <code>offset</code> inclusive, is 0N/A * shorter than 8 bytes.