This is the first time i am posting a question on this portal.I have zimbra mail server domain name and port-587. it is giving the following exception when i am trying to create certificate.
package com.test;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.security.KeyStore;
import java.security.MessageDigest;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509TrustManager;
public class InstallCert {
public static void main(String args[]) throws Exception {
String host;
int port;
char[] passphrase;
if ((args.length == 1) || (args.length == 2)) {
final String[] c = args[0].split(":");
host = c[0];
port = (c.length == 1) ? 443 : Integer.parseInt(c[1]);
final String p = (args.length == 1) ? "changeit" : args[1];
passphrase = p.toCharArray();
} else {
host = "mail.clientname.com";
port = 587;
final String p= "changeit";
passphrase = p.toCharArray();
System.out.println(
"Usage: java InstallCert <host>[:port] [passphrase]");
// return;
}
File file = new File("jssecacerts");
if (file.isFile() == false) {
final char SEP = File.separatorChar;
final 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 + "...");
final InputStream in = new FileInputStream(file);
final KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
ks.load(in, passphrase);
in.close();
final SSLContext context = SSLContext.getInstance("TLS");
final TrustManagerFactory tmf =
TrustManagerFactory.getInstance(TrustManagerFactory
.getDefaultAlgorithm());
tmf.init(ks);
final X509TrustManager defaultTrustManager =
(X509TrustManager) tmf.getTrustManagers()[0];
final SavingTrustManager tm = new SavingTrustManager(
defaultTrustManager);
context.init(null, new TrustManager[] { tm }, null);
final SSLSocketFactory factory = context.getSocketFactory();
System.out.println("Opening connection to "
+ host + ":" + port + "...");
final 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 (final SSLException e) {
System.out.println("palu");
e.printStackTrace(System.out);
}
final X509Certificate[] chain = tm.chain;
if (chain == null) {
System.out.println("Could not obtain server certificate chain");
return;
}
final BufferedReader reader =
new BufferedReader(new InputStreamReader(System.in));
System.out.println();
System.out.println("Server sent " + chain.length + " certificate(s):");
System.out.println();
final MessageDigest sha1 = MessageDigest.getInstance("SHA1");
final MessageDigest md5 = MessageDigest.getInstance("MD5");
for (int i = 0; i < chain.length; i++) {
final 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]");
final String line = reader.readLine().trim();
int k;
try {
k = (line.length() == 0) ? 0 : Integer.parseInt(line) - 1;
} catch (final NumberFormatException e) {
System.out.println("KeyStore not changed");
return;
}
final X509Certificate cert = chain[k];
final String alias = host + "-" + (k + 1);
ks.setCertificateEntry(alias, cert);
final OutputStream out = new FileOutputStream(file);
ks.store(out, passphrase);
out.close();
System.out.println();
System.out.println(cert);
System.out.println();
System.out.println(
"Added certificate to keystore 'cacerts' using alias '"
+ alias + "'");
}
private static final char[] HEXDIGITS = "0123456789abcdef".toCharArray();
private static String toHexString(final byte[] bytes) {
final 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(final X509TrustManager tm) {
this.tm = tm;
}
@Override
public X509Certificate[] getAcceptedIssuers() {
return new X509Certificate[0];
// throw new UnsupportedOperationException();
}
@Override
public void checkClientTrusted(final X509Certificate[] chain,
final String authType)
throws CertificateException {
throw new UnsupportedOperationException();
}
@Override
public void checkServerTrusted(final X509Certificate[] chain,
final String authType)
throws CertificateException {
this.chain = chain;
this.tm.checkServerTrusted(chain, authType);
}
}
}
while executing it is giving the following exception----
javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
at sun.security.ssl.InputRecord.handleUnknownRecord(InputRecord.java:671)
at sun.security.ssl.InputRecord.read(InputRecord.java:504)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:927)
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)
at com.test.InstallCert.main(InstallCert.java:81)
Could not obtain server certificate chain
please see this link
i have got code from the here
