Yes, If you do a simple google search or search in this forum you can find lot more answers.

http://docs.openstack.org/havana/conf...

Update 1: What is not working command line commands, or the service operation?

You need to add OS_CACERT or insecure to make it work. First try insecure, if that work then you can use proper CACERT. Invoke all command like clients with --insecure option

Also in all the services conf file under keystone_authtoken section you need to make sure if you specify cafile, it should point to proper location

Yes, It is very well possible. You need to do following configuration to make it happen

1. Enable ssl for keystone. Get the required ssl certificates. Update the [ssl] or [eventlet_server_ssl] based on your keystone version.
2. Create the keystone endpoint with https
3. Create the endpoint of other services as usual(http)
4. Update the auth section of service with keystone details. Make sure to auth_uri is https.

Following worked for me when I was configuring swift with keystone(ssl)

 [filter:authtoken]
        admin_tenant_name = service
        admin_user = swift
        admin_password = Passw0rd
        auth_host = keystonehost
        auth_port = 35357
        auth_protocol = https
        auth_uri = https://keystonehost:35357/v3
        cafile = /etc/keystone/ssl/certs/ssl_cacert.pem