001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.commons.crypto.random;
019
020import java.io.Closeable;
021
022/**
023 * Generates random bytes.
024 * <p>
025 * Note that implementations must provide a constructor that takes a Properties instance.
026 * </p>
027 */
028public interface CryptoRandom extends Closeable {
029
030    /**
031     * Generates random bytes and places them into a user-supplied byte array.
032     * The number of random bytes produced is equal to the length of the byte
033     * array.
034     *
035     * @param bytes the byte array to fill with random bytes
036     */
037    void nextBytes(byte[] bytes);
038
039}