| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.knox.gateway.util; |
| |
| import java.security.SecureRandom; |
| |
| public class PasswordUtils { |
| private static final SecureRandom SECURE_RANDOM = new SecureRandom(); |
| private static final char[] ALPHANUMERIC_CHARS = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', |
| 'h', 'j', 'k', 'm', 'n', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', |
| 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', |
| 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', |
| '2', '3', '4', '5', '6', '7', '8', '9',}; |
| |
| private PasswordUtils() {} |
| |
| public static synchronized String generatePassword(int length) { |
| StringBuilder sb = new StringBuilder(); |
| for (int i = 0; i < length; i++) { |
| sb.append(ALPHANUMERIC_CHARS[SECURE_RANDOM.nextInt(ALPHANUMERIC_CHARS.length)]); |
| } |
| return sb.toString(); |
| } |
| } |