SSLHandshakeException: никаких общих наборов шифров (JAVA)

Question

Может кто-нибудь сказать мне, что я делаю не так в этом коде? Серверная часть, кажется, работает. Как только я запускаю код для серверной части, сервер ждет, пока клиент запросит соединение. Затем, когда я запускаю код клиента, он создает следующее исключение на стороне клиента:

javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure
    at sun.security.ssl.Alerts.getSSLException(Unknown Source)
    at sun.security.ssl.Alerts.getSSLException(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.recvAlert(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
    at LoginDialog.doConnectToServer(LoginDialog.java:208)
    at LoginDialog.<init>(LoginDialog.java:67)
    at ClientSideMain.main(ClientSideMain.java:5)
Press any key to continue . . .

и следующее исключение на стороне сервера:

javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLHandshakeException: no cipher suites in common
    at sun.security.ssl.SSLSocketImpl.checkEOF(Unknown Source)
    at sun.security.ssl.AppInputStream.read(Unknown Source)
    at sun.nio.cs.StreamDecoder.readBytes(Unknown Source)
    at sun.nio.cs.StreamDecoder.implRead(Unknown Source)
    at sun.nio.cs.StreamDecoder.read(Unknown Source)
    at java.io.InputStreamReader.read(Unknown Source)
    at java.io.BufferedReader.fill(Unknown Source)
    at java.io.BufferedReader.readLine(Unknown Source)
    at java.io.BufferedReader.readLine(Unknown Source)
    at Talker.recieve(Talker.java:78)
    at CTC.run(CTC.java:49)
    at java.lang.Thread.run(Unknown Source)
Caused by: javax.net.ssl.SSLHandshakeException: no cipher suites in common
    at sun.security.ssl.Alerts.getSSLException(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
    at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
    at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
    at sun.security.ssl.ServerHandshaker.chooseCipherSuite(Unknown Source)
    at sun.security.ssl.ServerHandshaker.clientHello(Unknown Source)
    at sun.security.ssl.ServerHandshaker.processMessage(Unknown Source)
    at sun.security.ssl.Handshaker.processLoop(Unknown Source)
    at sun.security.ssl.Handshaker.process_record(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.writeRecord(Unknown Source)
    at sun.security.ssl.AppOutputStream.write(Unknown Source)
    at sun.security.ssl.AppOutputStream.write(Unknown Source)
    at java.io.DataOutputStream.writeBytes(Unknown Source)
    at Talker.send(Talker.java:58)
    at CTC.send(CTC.java:344)
    at CTC.<init>(CTC.java:31)
    at ServerSide.<init>(ServerSide.java:73)
    at ServerSideMain.main(ServerSideMain.java:5)

Серверный код

public class ServerSide
{
ServerSocket serverSocket;
Socket regSocket;
Hashtable<String,User> userList;
CTC tempCTC;
File f;
DataInputStream in;
BufferedReader br;

SSLContext sslContext;
KeyManagerFactory keyManagerFactory;
KeyStore keyStore;
char[] keyStorePassphrase;

SSLServerSocketFactory sslServerSocketFactory;
SSLServerSocket sslServerSocket;
SSLSocket sslNormalSocket;

ServerSide()
{
    f = new File("userlist.txt");
    userList = new Hashtable<String, User>();
    loadUsers(f);

    try
    {
        sslContext = SSLContext.getInstance("SSL");
        keyManagerFactory = KeyManagerFactory.getInstance("SunX509");
        keyStore = KeyStore.getInstance("JKS");
        keyStorePassphrase = "passphrase".toCharArray();
        keyStore.load(new FileInputStream("testkeys"), keyStorePassphrase);
        keyManagerFactory.init(keyStore, keyStorePassphrase);
        sslContext.init(keyManagerFactory.getKeyManagers(), null, null);
        sslServerSocketFactory = (SSLServerSocketFactory)SSLServerSocketFactory.getDefault();

        sslServerSocket = (SSLServerSocket)sslServerSocketFactory.createServerSocket(12345);

        try{Thread.sleep(1000);}catch(Exception e){}

        while(true)
        {
            sslNormalSocket = (SSLSocket)sslServerSocket.accept();
            tempCTC = new CTC(sslNormalSocket, userList, f);
        }
    }
    catch(IOException ioe)
    {
        ioe.printStackTrace();
    }
    catch(NoSuchAlgorithmException nsae)
    {
        nsae.printStackTrace();
    }
    catch(KeyStoreException kse)
    {
        kse.printStackTrace();
    }
    catch(CertificateException ce)
    {
        ce.printStackTrace();
    }
    catch(UnrecoverableKeyException uke)
    {
        uke.printStackTrace();
    }
    catch(KeyManagementException kme)
    {
        kme.printStackTrace();
    }
}

Код на стороне клиента (где возникает исключение)

private void doConnectToServer()
{
    SSLSocketFactory        sslSocketFactory;
    KeyManagerFactory       keyManagerFactory;
    SSLContext              sslContext;
    KeyStore                keyStore;
    char[]                  keyStorePassphrase;
    SSLSocket               sslSocket;

    try
    {
        Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());

        System.setProperty("javax.net.ssl.trustStore", "samplecacerts");
        System.setProperty("javax.net.ssl.trustStorePassword", "changeit");

        sslContext = SSLContext.getInstance("SSL");
        keyManagerFactory = KeyManagerFactory.getInstance("SunX509");
        keyStore = KeyStore.getInstance("JKS");

        keyStorePassphrase = "passphrase".toCharArray();
        keyStore.load(new FileInputStream("testkeys"), keyStorePassphrase);

        keyManagerFactory.init(keyStore, keyStorePassphrase);
        sslContext.init(keyManagerFactory.getKeyManagers(), null, null);

        sslSocketFactory = sslContext.getSocketFactory();

        sslSocketFactory = (SSLSocketFactory)SSLSocketFactory.getDefault();

        sslSocket = (SSLSocket)sslSocketFactory.createSocket("127.0.0.1", 12345);

        sslSocket.startHandshake(); //line that throws the exception

        cts = new CTS(sslSocket, this);
    }
    catch(Exception e)
    {
        e.printStackTrace();
    }
}

Answer 1

Похоже, у вас нет одинакового метода шифрования с обеих сторон (сервер / клиент).

Caused by: javax.net.ssl.SSLHandshakeException: no cipher suites in common

Убедитесь, что вы используете то же самое с обеих сторон.