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Tip of the Day
Language: Java
Expertise: Advanced
Nov 19, 2008

WEBINAR:

On-Demand

Building the Right Environment to Support AI, Machine Learning and Deep Learning


Work with SSL/LDAP Using Java

Most applications nowadays authenticate through LDAP (directory service). To set this up, first register the SSL certificate using the keytool utility, as shown below:

Register ssl certificate using keytool:

keytool -import -alias <certname> -file <filename.crt> -keystore "..yourpath\java\jre\lib\security\cacerts"
The following code shows how to connect to LDAP and display the values specific to a username:

..class name..
.. 
public static void main(String args[]){

String keystore = System.getProperty("" + "/lib/security/cacerts");
System.setProperty(LDAPConstants.LDAP_SSL_TRUST_STORE,keystore);

try{
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, "ldap://yourservername:636");
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PROTOCOL, "ssl");

env.put(Context.SECURITY_PRINCIPAL, "yourusername");
env.put(Context.SECURITY_CREDENTIALS, "yourpassword");
				
dirCtx = new InitialLdapContext(env, null);

NamingEnumeration ne = null;
SearchControls controls =  new SearchControls();
controls.setSearchScope(SearchControls.SUBTREE_SCOPE);
ne = dirCtx.search("OU=Users,DC=yourcompany, DC=com, DC=au","userName="+userName,controls);

 if (ne != null) {
  if (ne.hasMore()) {
    SearchResult item = (SearchResult) ne.next();
	display(item.getAttributes());
  }

}catch(javax.naming.AuthenticationException e){
  e.printStackTrace();
}catch(NamingException e) {
  e.printStackTrace();
}
}
private static void display(Attributes attr) throws NamingException{
  NamingEnumeration ne = attr.getAll();
  while(ne.hasMore()){
	Attribute  obj = (Attribute)ne.next();
	System.out.println(obj.getID()+"\t"+(String)obj.get(0));
  }
}
....
...
Elayaraja David
 
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