1/* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.security.keystore; 18 19import java.security.interfaces.ECPublicKey; 20import java.security.spec.ECParameterSpec; 21import java.security.spec.ECPoint; 22 23/** 24 * {@link ECPublicKey} backed by keystore. 25 * 26 * @hide 27 */ 28public class AndroidKeyStoreECPublicKey extends AndroidKeyStorePublicKey implements ECPublicKey { 29 30 private final ECParameterSpec mParams; 31 private final ECPoint mW; 32 33 public AndroidKeyStoreECPublicKey(String alias, int uid, byte[] x509EncodedForm, ECParameterSpec params, 34 ECPoint w) { 35 super(alias, uid, KeyProperties.KEY_ALGORITHM_EC, x509EncodedForm); 36 mParams = params; 37 mW = w; 38 } 39 40 public AndroidKeyStoreECPublicKey(String alias, int uid, ECPublicKey info) { 41 this(alias, uid, info.getEncoded(), info.getParams(), info.getW()); 42 if (!"X.509".equalsIgnoreCase(info.getFormat())) { 43 throw new IllegalArgumentException( 44 "Unsupported key export format: " + info.getFormat()); 45 } 46 } 47 48 @Override 49 public ECParameterSpec getParams() { 50 return mParams; 51 } 52 53 @Override 54 public ECPoint getW() { 55 return mW; 56 } 57}