java – SSL套接字连接

如何创建SSL套接字连接？

我真的需要创建一个密钥库？这个密钥库应该与我的所有客户端应用程序共享？

我用以下代码创建了一个服务器：

SSLServerSocketFactory sslserversocketfactory = (SSLServerSocketFactory) SSLServerSocketFactory
                    .getDefault();
SSLServerSocket sslserversocket = (SSLServerSocket) sslserversocketfactory
                    .createServerSocket(ServerProperties.getInstance()
                            .getVSSPAuthenticationPort());

我在android上用以下代码创建了一个客户端：

SSLSocketFactory sslsocketfactory = (SSLSocketFactory) SSLSocketFactory
                .getDefault();
SSLSocket sslsocket = (SSLSocket) sslsocketfactory.createSocket(
                host, authPort);

sslsocket.startHandshake();

BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(
                sslsocket.getOutputStream()));
BufferedReader reader = new BufferedReader(new InputStreamReader(
                sslsocket.getInputStream()));

但是当我尝试连接时,会抛出以下错误：

javax.net.ssl.SSLHandshakeException: no cipher suites in common
    at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
    at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1886)
    at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:276)
    at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:266)
    at sun.security.ssl.ServerHandshaker.chooseCipherSuite(ServerHandshaker.java:894)
    at sun.security.ssl.ServerHandshaker.clientHello(ServerHandshaker.java:622)
    at sun.security.ssl.ServerHandshaker.processMessage(ServerHandshaker.java:167)
    at sun.security.ssl.Handshaker.processLoop(Handshaker.java:868)
    at sun.security.ssl.Handshaker.process_record(Handshaker.java:804)
    at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1016)
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1312)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1339)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1323)

解决方法:

您需要证书来建立ssl连接,您可以在密钥库中加载证书,也可以自己加载证书.我将展示一些keystore选项的示例.

您的代码需要运行一些参数：

java -Djavax.net.ssl.keyStore=keyStoreFile -Djavax.net.ssl.keyStorePassword=keystorePassword Server

您还可以使用java代码加载密钥库,最简单的解决方案是设置系统属性：

System.setProperty("javax.net.ssl.keyStore", 'keystoreFile');
System.setProperty("javax.net.ssl.keyStorePassword", 'keystorePassword ');

您也可以使用不同的方式加载密钥库,它更复杂,但您可以执行更复杂的操作：

KeyStore ks = KeyStore.getInstance("JKS");
ks.load(new FileInputStream("keystoreFile"), "keystorePassword".toCharArray());

KeyManagerFactory kmf = KeyManagerFactory.getInstance("X509");
kmf.init(ks, "keystorePassword".toCharArray());

TrustManagerFactory tmf = TrustManagerFactory.getInstance("X509"); 
tmf.init(ks);

SSLContext sc = SSLContext.getInstance("TLS"); 
TrustManager[] trustManagers = tmf.getTrustManagers(); 
sc.init(kmf.getKeyManagers(), trustManagers, null); 

SSLServerSocketFactory ssf = sc.getServerSocketFactory(); 
SSLServerSocket s = (SSLServerSocket) ssf.createServerSocket(serverport);
SSLSocket c = (SSLSocket) s.accept();

对于客户端,代码最后一行有一些变化,最后3行将被替换为：

SSLSocketFactory ssf = sc.getSocketFactory(); 
SSLSocket s = (SSLSocket) ssf.createSocket(serverip, serverport);
s.startHandshake();

如果要为android加载密钥库,则类型必须是“BKS”而不是“JKS”.您可以轻松找到用于创建密钥库的资源.

标签：android,java,ssl,sockets,client-server
来源： https://codeday.me/bug/20190928/1827110.html