/** 
 * Copyright (C) 2014 Open Whisper Systems
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.whispersystems.libaxolotl;


import org.whispersystems.libaxolotl.ecc.Curve;
import org.whispersystems.libaxolotl.ecc.ECPublicKey;
import org.whispersystems.libaxolotl.util.Hex;

/**
 * A class for representing an identity key.
 * 
 * @author Moxie Marlinspike
 */

public class IdentityKey {

  private final ECPublicKey publicKey;

  public IdentityKey(ECPublicKey publicKey) {
    this.publicKey = publicKey;
  }

  public IdentityKey(byte[] bytes, int offset) throws InvalidKeyException {
    this.publicKey = Curve.decodePoint(bytes, offset);
  }

  public ECPublicKey getPublicKey() {
    return publicKey;
  }

  public byte[] serialize() {
    return publicKey.serialize();
  }

  public String getFingerprint() {
    return Hex.toString(publicKey.serialize());
  }
	
  @Override
  public boolean equals(Object other) {
    if (other == null)                   return false;
    if (!(other instanceof IdentityKey)) return false;

    return publicKey.equals(((IdentityKey) other).getPublicKey());
  }
	
  @Override
  public int hashCode() {
    return publicKey.hashCode();
  }
}