content: /*
   * Copyright 2014-2025 Real Logic Limited.
   *
   * 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
   *
   * https://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 io.aeron.security;
  
  import org.agrona.collections.ArrayUtil;
  
  /**
   * Null provider of credentials when no authentication is required.
   */
  public class NullCredentialsSupplier implements CredentialsSupplier
  {
      /**
       * Null credentials are an empty array of bytes.
       */
      public static final byte[] NULL_CREDENTIAL = ArrayUtil.EMPTY_BYTE_ARRAY;
  
      /**
       * {@inheritDoc}
       */
      public byte[] encodedCredentials()
      {
          return NULL_CREDENTIAL;
      }
  
      /**
       * {@inheritDoc}
       */
      public byte[] onChallenge(final byte[] encodedChallenge)
      {
          return NULL_CREDENTIAL;
      }
  }
  