SSL & Jahia

Hi,
 
  We're using Jahia 4.0.5 and a LDAP directory and we wish to secure the
Jahia login process over multiple hosted web sites. We use apache 2 with
name based virtual host as a front end server and planning to use mod_jk
as the communication protocol between apache and tomcat 4.1.
 
We are evaluating multiple scenarios and one of them consist of
modifying the login process and url redirection to be generic to all web
site. This way we can use only one certificate. If this is supported by
jahia ? For exemple, redirecting the login process to a particular
hostname on the same jahia instance and returning to the current site
authentified ?
 
Other scenarios we are investigating are by using a shared ssl
certificate (wildcard), certificate with multiple SubjectAltName, and ip
based certificate.
 
I'm now wondering if any of you have implemented SSL with Jahia over
multiple hosted domains and what solution you took.
 
Thanx!
 
Pascal