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1    /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  package org.apache.commons.crypto.random;
19  
20  import java.io.Closeable;
21  
22  /**
23   * Generates random bytes.
24   * <p>
25   * Note that implementations must provide a constructor that takes a Properties instance.
26   * </p>
27   */
28  public interface CryptoRandom extends Closeable {
29  
30      /**
31       * Generates random bytes and places them into a user-supplied byte array.
32       * The number of random bytes produced is equal to the length of the byte
33       * array.
34       *
35       * @param bytes the byte array to fill with random bytes
36       */
37      void nextBytes(byte[] bytes);
38  
39  }