1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.shardingsphere.db.protocol.opengauss.packet.authentication;
19
20 import lombok.Getter;
21
22 import java.security.SecureRandom;
23 import java.util.Random;
24
25 /**
26 * Authentication hex data for openGauss.
27 */
28 @Getter
29 public final class OpenGaussAuthenticationHexData {
30
31 private final String salt;
32
33 private final String nonce;
34
35 public OpenGaussAuthenticationHexData() {
36 salt = generate(64);
37 nonce = generate(8);
38 }
39
40 private String generate(final int length) {
41 Random random = new SecureRandom();
42 StringBuilder result = new StringBuilder(length);
43 for (int i = 0; i < result.capacity(); i++) {
44 result.append(Integer.toString(random.nextInt(0x10), 0x10));
45 }
46 return result.toString();
47 }
48 }