| /* |
| * Copyright (c) 2006, 2013, 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 sun.security.ec; |
| |
| import java.io.IOException; |
| |
| import java.security.*; |
| import java.security.interfaces.*; |
| import java.security.spec.*; |
| |
| import sun.security.util.ECParameters; |
| import sun.security.util.ECUtil; |
| |
| import sun.security.x509.*; |
| |
| /** |
| * Key implementation for EC public keys. |
| * |
| * @since 1.6 |
| * @author Andreas Sterbenz |
| */ |
| public final class ECPublicKeyImpl extends X509Key implements ECPublicKey { |
| |
| private static final long serialVersionUID = -2462037275160462289L; |
| |
| private ECPoint w; |
| private ECParameterSpec params; |
| |
| /** |
| * Construct a key from its components. Used by the |
| * ECKeyFactory. |
| */ |
| @SuppressWarnings("deprecation") |
| ECPublicKeyImpl(ECPoint w, ECParameterSpec params) |
| throws InvalidKeyException { |
| this.w = w; |
| this.params = params; |
| // generate the encoding |
| algid = new AlgorithmId |
| (AlgorithmId.EC_oid, ECParameters.getAlgorithmParameters(params)); |
| key = ECUtil.encodePoint(w, params.getCurve()); |
| } |
| |
| /** |
| * Construct a key from its encoding. |
| */ |
| ECPublicKeyImpl(byte[] encoded) throws InvalidKeyException { |
| decode(encoded); |
| } |
| |
| // see JCA doc |
| public String getAlgorithm() { |
| return "EC"; |
| } |
| |
| // see JCA doc |
| public ECPoint getW() { |
| return w; |
| } |
| |
| // see JCA doc |
| public ECParameterSpec getParams() { |
| return params; |
| } |
| |
| // Internal API to get the encoded point. Currently used by SunPKCS11. |
| // This may change/go away depending on what we do with the public API. |
| @SuppressWarnings("deprecation") |
| public byte[] getEncodedPublicValue() { |
| return key.clone(); |
| } |
| |
| /** |
| * Parse the key. Called by X509Key. |
| */ |
| @SuppressWarnings("deprecation") |
| protected void parseKeyBits() throws InvalidKeyException { |
| AlgorithmParameters algParams = this.algid.getParameters(); |
| if (algParams == null) { |
| throw new InvalidKeyException("EC domain parameters must be " + |
| "encoded in the algorithm identifier"); |
| } |
| |
| try { |
| params = algParams.getParameterSpec(ECParameterSpec.class); |
| w = ECUtil.decodePoint(key, params.getCurve()); |
| } catch (IOException e) { |
| throw new InvalidKeyException("Invalid EC key", e); |
| } catch (InvalidParameterSpecException e) { |
| throw new InvalidKeyException("Invalid EC key", e); |
| } |
| } |
| |
| // return a string representation of this key for debugging |
| public String toString() { |
| return "Sun EC public key, " + params.getCurve().getField().getFieldSize() |
| + " bits\n public x coord: " + w.getAffineX() |
| + "\n public y coord: " + w.getAffineY() |
| + "\n parameters: " + params; |
| } |
| |
| protected Object writeReplace() throws java.io.ObjectStreamException { |
| return new KeyRep(KeyRep.Type.PUBLIC, |
| getAlgorithm(), |
| getFormat(), |
| getEncoded()); |
| } |
| } |