content: /*
   * Copyright (C) 2015 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package android.security.keystore;
  
  import java.security.interfaces.ECPublicKey;
  import java.security.spec.ECParameterSpec;
  import java.security.spec.ECPoint;
  
  /**
   * {@link ECPublicKey} backed by keystore.
   *
   * @hide
   */
  public class AndroidKeyStoreECPublicKey extends AndroidKeyStorePublicKey implements ECPublicKey {
  
      private final ECParameterSpec mParams;
      private final ECPoint mW;
  
      public AndroidKeyStoreECPublicKey(String alias, int uid, byte[] x509EncodedForm, ECParameterSpec params,
              ECPoint w) {
          super(alias, uid, KeyProperties.KEY_ALGORITHM_EC, x509EncodedForm);
          mParams = params;
          mW = w;
      }
  
      public AndroidKeyStoreECPublicKey(String alias, int uid, ECPublicKey info) {
          this(alias, uid, info.getEncoded(), info.getParams(), info.getW());
          if (!"X.509".equalsIgnoreCase(info.getFormat())) {
              throw new IllegalArgumentException(
                      "Unsupported key export format: " + info.getFormat());
          }
      }
  
      @Override
      public ECParameterSpec getParams() {
          return mParams;
      }
  
      @Override
      public ECPoint getW() {
          return mW;
      }
  }