一、说明

  笔记主要是记录一些本人在开发当中的学习和使用笔记。笔记内容包含一些本人觉得重要的知识点、本人易犯的错误等。
  由于本人水平有限，其中出现的错误或者不合理的地方望各位读者多多包含，并指出其中不合理和错误的地方，以便我来修正。谢谢！

二、笔记时间

  2018年10月17日

三、简述

  本文主要讲述SSLSocket的简单使用方式。

四、详情

  SSLSocket是Socekt的加密通讯模式。本文介绍无证书实现SSLSocket的方式。
  第一：重写X509TrustManager，使信任所有证书。如下代码：

package com.test.sys.plcd.util;

import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

import javax.net.ssl.X509TrustManager;

/**
 * 创建人: lipy
 * 创建时间: 2018/4/23
 * 修改人:lipy
 * 修改时间:2018/4/23
 * 修改内容:
 *
 * 功能描述: 信任所有证书
 */
public class MyX509TrustManager implements X509TrustManager {

    public MyX509TrustManager() throws Exception {

    }

    /*
     * Delegate to the default trust manager.
     */
    public void checkClientTrusted(X509Certificate[] chain, String authType)
            throws CertificateException {

    }

    /*
     * Delegate to the default trust manager.
     */
    public void checkServerTrusted(X509Certificate[] chain, String authType)
            throws CertificateException {

    }

    /*
     * Merely pass this through.
     */
    public X509Certificate[] getAcceptedIssuers() {
//      return new java.security.cert.X509Certificate[0];
        return null;
    }
}

  第二：创建SSLSocket。如下代码：

//java
import java.io.IOException;
import java.net.UnknownHostException;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.TrustManager;

try {
    TrustManager[] tm = new TrustManager[]{new MyX509TrustManager()};
    SSLContext sslContext = SSLContext.getInstance("SSLv3");
    sslContext.init(null, tm, new java.security.SecureRandom());

    SSLSocket sslSocket = sslContext.getSocketFactory().createSocket(mHost, mPort);

} catch (UnknownHostException e) {
} catch (IOException e) {
} catch (Exception e) {
}

//kotlin
import java.io.IOException;
import java.net.UnknownHostException;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.TrustManager;

try {
      val tm = arrayOf<TrustManager>(MyX509TrustManager())
      val sslContext = SSLContext.getInstance("SSLv3")
      sslContext.init(null, tm, java.security.SecureRandom())

      val mSllSocket = sslContext.socketFactory.createSocket(mHost, mPort) as SSLSocket?
  
} catch (e: UnknownHostException) {
} catch (e: IOException) {
} catch (e: Exception) {
}