content: /*******************************************************************************
   * Copyright 2014 Trevor Robinson
   * 
   * 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 com.scurrilous.circe.params;
  
  import com.scurrilous.circe.HashParameters;
  
  /**
   * Hash parameters for <a href="https://131002.net/siphash/">SipHash-2-4</a>.
   */
  public final class SipHash24Parameters implements HashParameters {
  
      private final long seedLow;
      private final long seedHigh;
  
      /**
       * Constructs a {@link SipHash24Parameters} with the default seed,
       * {@code 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F}.
       */
      public SipHash24Parameters() {
          this(0x0706050403020100L, 0x0f0e0d0c0b0a0908L);
      }
  
      /**
       * Constructs a {@link SipHash24Parameters} with the given seed.
       * 
       * @param seedLow the low-order 64 bits of the seed
       * @param seedHigh the high-order 64 bits of the seed
       */
      public SipHash24Parameters(long seedLow, long seedHigh) {
          this.seedLow = seedLow;
          this.seedHigh = seedHigh;
      }
  
      /**
       * Returns the low-order 64 bits of the seed.
       * 
       * @return low-order bits of seed
       */
      public long seedLow() {
          return seedLow;
      }
  
      /**
       * Returns the high-order 64 bits of the seed.
       * 
       * @return high-order bits of seed
       */
      public long seedHigh() {
          return seedHigh;
      }
  
      @Override
      public String algorithm() {
          return "SipHash-2-4";
      }
  }
  