Java Security

I am really struggling in creating a connection to openLDAP with java using SSLSocketFactory and only selecting 256 bit AES encryption cipher suites.

Following is the code I am using:
****************************************************************************************************************************************

package demo;

import java.io.;
import java.util.Hashtable;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.naming.;
import javax.naming.directory.;
import javax.naming.ldap.;
import java.security.;
import javax.net.ssl.;

class SslSocketExample {

public static void main(String[] args) {

String patternString = "AES.256";
Pattern pattern = Pattern.compile(patternString);
Matcher matcher;
boolean matchFound;

// Set up environment for creating initial context
Hashtable<String, Object> env = new Hashtable<String, Object>(11);
env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.STATE_FACTORIES, "PersonStateFactory");
env.put(Context.OBJECT_FACTORIES, "PersonObjectFactory");
env.put(Context.PROVIDER_URL, "ldap://localhost:636/dc=my-domain,dc=com");
//env.put(LdapContext.CONTROL_FACTORIES, "com.sun.jndi.ldap.ControlFactory");


// Specify SSL
env.put(Context.SECURITY_PROTOCOL, "ssl");

// Authenticate as S. User and password "mysecret"
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL,"cn=manager,dc=my-domain,dc=com");
env.put(Context.SECURITY_CREDENTIALS, "secret");


// this is to use the SSL Socket Factory
env.put("java.naming.ldap.factory.socket",SSLSocketFactory.class.getName());

// Specify the search filter to match all users with no full name
String filter = "(&(objectClass=Person))";

// limit returned attributes to those we care about
String[] attrIDs = {"cn"};

SearchControls ctls = new SearchControls();

ctls.setReturningAttributes(attrIDs);

ctls.setSearchScope(ctls.SUBTREE_SCOPE);

// Search for objects using filter and controls

try {


// Create initial context
LdapContext ctx = new InitialLdapContext(env, null);
System.out.println("Successfull bind to ");

//this is used previously
//DirContext ctx = new InitialDirContext(env);

// cycle through result set

try{

//trying to use the ssl socket
SSLSocketFactory sslFact =(SSLSocketFactory)SSLSocketFactory.getDefault();
SSLSocket s =(SSLSocket)sslFact.createSocket(args.length == 0 ? "localhost" : args[0], 636);


//Following lines are used to select and enable the 256 bit AES ciphers only on socket
String str[]=s.getSupportedCipherSuites();
int len = str.length;
String set[] = new String[len];

int j=0, k = len-1;
for (int i=0; i < len; i++) {
System.out.println(str);

// Determine if pattern exists in input
matcher = pattern.matcher(str[i]);
matchFound = matcher.find();

if (matchFound)
set[j++] = str[i];
else
set[k--] = str[i];
}

s.setEnabledCipherSuites(set);

str=s.getEnabledCipherSuites();

System.out.println("Available Suites after Set:");
for (int i=0; i < str.length; i++)
System.out.println(str[i]);

System.out.println("socket is connected" s.isConnected());

s.startHandshake();
OutputStream out = s.getOutputStream();

out.write("GET / HTTP/1.0\n\r\n\r".getBytes());
out.flush();
System.out.println("Successfull connection to localhost :636");
NamingEnumeration answer = ctx.search("", filter, ctls);

//this is to get the users from LDAP
while (answer.hasMore())
{
SearchResult sr = (SearchResult)answer.next();
System.out.println(">>>" sr.getAttributes());

}

ctx.close();

}
catch(Exception e)
{System.out.println("error"+e);}

} catch (NamingException e) {
e.printStackTrace();
}
}
}

*****************************************************************************************************************************************

I am receiving the following error:

Thread-0, handling exception: java.net.SocketException: socket closed
javax.naming.AuthenticationNotSupportedException: [LDAP: error code 13 - stronger confidentialityquired]%% Invalidated: [Session-1, SSL_RSA_WITH_RC4_128_MD5]
at com.sun.jndi.ldap.LdapCtx.mapErrorCode(LdapCtx.java:3032)Thread-0
, SEND TLSv1 ALERT: fatal, at com.sun.jndi.ldap.LdapCtx.processReturnCode(LdapCtx.java:2987)dcription = unexpected_message
at com.sun.jndi.ldap.LdapCtx.processReturnCode(LdapCtx.java:2789)
Padded plaintext before ENCRYPTION: len = 18 at com.sun.jndi.ldap.LdapCtx.connect(LdapCtx.java:03)
0000: at com.sun.jndi.ldap.LdapCtx.<init>(LdapCtx.java:293)02

Please help us me in providing any JAVA code that can connect to the OpenLDAP over 256 bit SSL encryption.


Sandeep