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.Key;
  
  /**
   * {@link Key} backed by Android Keystore.
   *
   * @hide
   */
  public class AndroidKeyStoreKey implements Key {
      private final String mAlias;
      private final int mUid;
      private final String mAlgorithm;
  
      public AndroidKeyStoreKey(String alias, int uid, String algorithm) {
          mAlias = alias;
          mUid = uid;
          mAlgorithm = algorithm;
      }
  
      String getAlias() {
          return mAlias;
      }
  
      int getUid() {
          return mUid;
      }
  
      @Override
      public String getAlgorithm() {
          return mAlgorithm;
      }
  
      @Override
      public String getFormat() {
          // This key does not export its key material
          return null;
      }
  
      @Override
      public byte[] getEncoded() {
          // This key does not export its key material
          return null;
      }
  
      @Override
      public int hashCode() {
          final int prime = 31;
          int result = 1;
          result = prime * result + ((mAlgorithm == null) ? 0 : mAlgorithm.hashCode());
          result = prime * result + ((mAlias == null) ? 0 : mAlias.hashCode());
          result = prime * result + mUid;
          return result;
      }
  
      @Override
      public boolean equals(Object obj) {
          if (this == obj) {
              return true;
          }
          if (obj == null) {
              return false;
          }
          if (getClass() != obj.getClass()) {
              return false;
          }
          AndroidKeyStoreKey other = (AndroidKeyStoreKey) obj;
          if (mAlgorithm == null) {
              if (other.mAlgorithm != null) {
                  return false;
              }
          } else if (!mAlgorithm.equals(other.mAlgorithm)) {
              return false;
          }
          if (mAlias == null) {
              if (other.mAlias != null) {
                  return false;
              }
          } else if (!mAlias.equals(other.mAlias)) {
              return false;
          }
          if (mUid != other.mUid) {
              return false;
          }
          return true;
      }
  }
  