1 /* 2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 package sun.security.util; 26 27 import java.security.spec.AlgorithmParameterSpec; 28 29 import sun.security.util.ObjectIdentifier; 30 31 /** 32 * This immutable class is used when randomly generating a key pair and the 33 * consumer only specifies the length of the key and therefore a curve for that 34 * key size must be picked from a the list of supported curves using this spec. 35 * 36 * @see AlgorithmParameterSpec 37 * @see ECGenParameterSpec 38 */ 39 public class ECKeySizeParameterSpec implements AlgorithmParameterSpec { 40 41 private int keySize; 42 43 /** 44 * Creates a parameter specification for EC curve 45 * generation using a standard (or predefined) key size 46 * <code>keySize</code> in order to generate the corresponding 47 * (precomputed) elliptic curve. 48 * <p> 49 * Note, if the curve of the specified length is not supported, 50 * <code>AlgorithmParameters.init</code> will throw an exception. 51 * 52 * @param keySize the key size of the curve to lookup 53 */ ECKeySizeParameterSpec(int keySize)54 public ECKeySizeParameterSpec(int keySize) { 55 this.keySize = keySize; 56 } 57 58 /** 59 * Returns the key size of this spec. 60 * 61 * @return the standard or predefined key size. 62 */ getKeySize()63 public int getKeySize() { 64 return keySize; 65 } 66 } 67