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PKCS#11 wrapper based on sunpkcs11
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// Copyright (c) 2002 Graz University of Technology. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
//    this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// 3. The end-user documentation included with the redistribution, if any, must
//    include the following acknowledgment:
//
//    "This product includes software developed by IAIK of Graz University of
//     Technology."
//
//    Alternately, this acknowledgment may appear in the software itself, if and
//    wherever such third-party acknowledgments normally appear.
//
// 4. The names "Graz University of Technology" and "IAIK of Graz University of
//    Technology" must not be used to endorse or promote products derived from
//    this software without prior written permission.
//
// 5. Products derived from this software may not be called "IAIK PKCS Wrapper",
//    nor may "IAIK" appear in their name, without prior written permission of
//    Graz University of Technology.
//
// THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE LICENSOR BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
// OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.

package iaik.pkcs.pkcs11.params;

import java.util.Arrays;

import iaik.pkcs.pkcs11.Util;

/**
 * This class encapsulates parameters byte arrays.
 *
 * @author Lijun Liao
 */
public class OpaqueParams implements Params {

  protected byte[] bytes;

  public OpaqueParams(byte[] bytes) {
    this.bytes = bytes;
  }

  /**
   * Get this parameters object as a byte array.
   *
   * @return This object as a byte array.
   * @preconditions
   * @postconditions (result <> null)
   */
  @Override
  public Object getPKCS11ParamsObject() {
    return bytes;
  }

  /**
   * Get the public value of the other party in the key agreement protocol.
   *
   * @return The public value of the other party in the key agreement
   *         protocol.
   * @preconditions
   * @postconditions (result <> null)
   */
  public byte[] getBytes() {
    return bytes;
  }

  public void setBytes(byte[] bytes) {
    this.bytes = Util.requireNonNull("bytes", bytes);
  }

  @Override
  public String toString() {
    return Util.concat("  Bytes (hex): ", Util.toHex(bytes));
  }

  @Override
  public boolean equals(Object otherObject) {
    if (this == otherObject) {
      return true;
    } else if (!(otherObject instanceof OpaqueParams)) {
      return false;
    }

    OpaqueParams other = (OpaqueParams) otherObject;
    return Arrays.equals(this.bytes, other.bytes);
  }

  @Override
  public int hashCode() {
    return Util.hashCode(bytes);
  }

}