The current LdapIdentityStore offers a good support for integrate an LDAP repository. Unfortunately, at the moment, there is no configuration to access it via SSL.
The minimum support could be done by adding a new boolean attribute (for ex. ssl-enabled) in the ldap-identity-store element to offer the possibility to choose or not a secure communication.
I've tried to implement this extension changing security-2.2.xsd and the LdapIdentityStore class.
In the second file my work has been on new attribute getter/setter and on initialiseContext(String principal, String credentials) method just adding the following lines :
String ldapProtocol = "ldap";
String providerUrl = String.format("%s://%s:%d", ldapProtocol, getServerAddress(), getServerPort());
In addition get the server certificate and set the -Djavax.net.ssl.trustStore=/path/to/keystore as JAVA_OPTS is needed.
At the moment I'm able to initiate the communication with secure LDAP server but the Identity.authenticate causes a "javax.security.auth.login.LoginException: Login Failure: all modules ignored"
The complete stacktrace is attached to the issue.