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Discussione: [JAVA] java e ssl

  1. #1
    Utente di HTML.it
    Registrato dal
    Dec 2006
    Messaggi
    57

    [JAVA] java e ssl

    ciao a tutti,
    ho un problema......
    Devo effettuare la mutua autenticazione tra client e server (Apache Tomcat) i tramite tunnel ssl.
    Ho inoltre scritto il seguente programma client in java che dovrebbe fare ciò:

    package javaapplication35;

    import java.io.*;

    import java.security.*;
    import java.security.cert.*;

    import javax.net.ssl.*;

    public class InstallCert {

    public static void main(String[] args) throws Exception {
    String host;
    int port;
    char[] passphrase;

    host = "localhost";
    port = 8443;
    String p = "changeit";
    passphrase = p.toCharArray();


    File file = new File("jssecacerts");
    if (file.isFile() == false) {
    char SEP = File.separatorChar;
    File dir = new File(System.getProperty("java.home") + SEP
    + "lib" + SEP + "security");
    file = new File(dir, "jssecacerts");
    if (file.isFile() == false) {
    file = new File(dir, "cacerts");
    }
    }
    System.out.println("Loading KeyStore " + file + "...");
    InputStream in = new FileInputStream(file);
    KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
    ks.load(in, passphrase);
    in.close();

    SSLContext context = SSLContext.getInstance("TLS");
    TrustManagerFactory tmf =
    TrustManagerFactory.getInstance(TrustManagerFactor y.getDefaultAlgorithm());
    tmf.init(ks);
    X509TrustManager defaultTrustManager = (X509TrustManager)tmf.getTrustManagers()[0];
    SavingTrustManager tm = new SavingTrustManager(defaultTrustManager);
    context.init(null, new TrustManager[] {tm}, null);
    SSLSocketFactory factory = context.getSocketFactory();

    System.out.println("Opening connection to " + host + ":" + port + "...");
    SSLSocket socket = (SSLSocket)factory.createSocket(host, port);
    socket.setSoTimeout(10000);
    try {
    System.out.println("Starting SSL handshake...");
    socket.startHandshake();
    socket.close();
    System.out.println();
    System.out.println("No errors, certificate is already trusted");
    } catch (SSLException e) {
    System.out.println();
    e.printStackTrace(System.out);
    }

    X509Certificate[] chain = tm.chain;
    if (chain == null) {
    System.out.println("Could not obtain server certificate chain");
    return;
    }

    BufferedReader reader =
    new BufferedReader(new InputStreamReader(System.in));

    System.out.println();
    System.out.println("Server sent " + chain.length + " certificate(s):");
    System.out.println();
    MessageDigest sha1 = MessageDigest.getInstance("SHA1");
    MessageDigest md5 = MessageDigest.getInstance("MD5");
    for (int i = 0; i < chain.length; i++) {
    X509Certificate cert = chain[i];
    System.out.println
    (" " + (i + 1) + " Subject " + cert.getSubjectDN());
    System.out.println(" Issuer " + cert.getIssuerDN());
    sha1.update(cert.getEncoded());
    System.out.println(" sha1 " + toHexString(sha1.digest()));
    md5.update(cert.getEncoded());
    System.out.println(" md5 " + toHexString(md5.digest()));
    System.out.println();
    }

    System.out.println("Enter certificate to add to trusted keystore or 'q' to quit: [1]");
    String line = reader.readLine().trim();
    int k;
    try {
    k = (line.length() == 0) ? 0 : Integer.parseInt(line) - 1;
    } catch (NumberFormatException e) {
    System.out.println("KeyStore not changed");
    return;
    }

    X509Certificate cert = chain[k];
    String alias = host + "-" + (k + 1);
    ks.setCertificateEntry(alias, cert);

    OutputStream out = new FileOutputStream("jssecacerts");
    ks.store(out, passphrase);
    out.close();

    System.out.println();
    System.out.println(cert);
    System.out.println();
    System.out.println
    ("Added certificate to keystore 'jssecacerts' using alias '"
    + alias + "'");
    }

    private static final char[] HEXDIGITS = "0123456789abcdef".toCharArray();

    private static String toHexString(byte[] bytes) {
    StringBuilder sb = new StringBuilder(bytes.length * 3);
    for (int b : bytes) {
    b &= 0xff;
    sb.append(HEXDIGITS[b >> 4]);
    sb.append(HEXDIGITS[b & 15]);
    sb.append(' ');
    }
    return sb.toString();
    }

    private static class SavingTrustManager implements X509TrustManager {

    private final X509TrustManager tm;
    private X509Certificate[] chain;

    SavingTrustManager(X509TrustManager tm) {
    this.tm = tm;
    }

    public X509Certificate[] getAcceptedIssuers() {
    throw new UnsupportedOperationException();
    }

    public void checkClientTrusted(X509Certificate[] chain, String authType)
    throws CertificateException {
    throw new UnsupportedOperationException();
    }

    public void checkServerTrusted(X509Certificate[] chain, String authType)
    throws CertificateException {
    this.chain = chain;
    tm.checkServerTrusted(chain, authType);
    }
    }

    }



    Questo codice funziona bene se nel file di configurazione (server.xml) setto clientAuth="false" . Mentre se imposto clientAuth="true" mi dà questo tipo di errore:

    Exception in thread "main" java.net.SocketException: Software caused connection abort: recv failed
    at java.net.SocketInputStream.socketRead0(Native Method)
    at java.net.SocketInputStream.read(SocketInputStream. java:129)
    at com.sun.net.ssl.internal.ssl.InputRecord.readFully (InputRecord.java:293)
    at com.sun.net.ssl.internal.ssl.InputRecord.read(Inpu tRecord.java:331)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRec ord(SSLSocketImpl.java:789)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.waitFor Close(SSLSocketImpl.java:1435)
    at com.sun.net.ssl.internal.ssl.HandshakeOutStream.fl ush(HandshakeOutStream.java:103)
    at com.sun.net.ssl.internal.ssl.Handshaker.sendChange CipherSpec(Handshaker.java:612)
    at com.sun.net.ssl.internal.ssl.ClientHandshaker.send ChangeCipherAndFinish(ClientHandshaker.java:808)
    at com.sun.net.ssl.internal.ssl.ClientHandshaker.serv erHelloDone(ClientHandshaker.java:734)
    at com.sun.net.ssl.internal.ssl.ClientHandshaker.proc essMessage(ClientHandshaker.java:197)
    at com.sun.net.ssl.internal.ssl.Handshaker.processLoo p(Handshaker.java:516)
    at com.sun.net.ssl.internal.ssl.Handshaker.process_re cord(Handshaker.java:454)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRec ord(SSLSocketImpl.java:884)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.perform InitialHandshake(SSLSocketImpl.java:1096)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHa ndshake(SSLSocketImpl.java:1123)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHa ndshake(SSLSocketImpl.java:1107)
    at javaapplication34.InstallCert.main(InstallCert.jav a:81)
    Java Result: 1


    Qualcuno mi può aiutare??????Cosa mi manca da settare per effettuare la mutua autentificazione??????

  2. #2
    Utente di HTML.it
    Registrato dal
    Dec 2006
    Messaggi
    57
    nessuna idea?????

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