Does ActiveMQ provide Kerberos authentication (GSSAPI) over TCP / AMQP / STOMP connectors

Question

Can someone tell me if (or when) ActiveMQ provides a Kerberos-based authentication scheme (GSSAPI)? Google tells me that someone added the naive kerberos plugin to the HTTPS connector, but I'm interested in a more universal solution that will provide support for single-signature authentication along with wrapped / encrypted messages for all connectors.

Does anyone know of any other message brokers that provide the same features?

Thanks and Regards, Bhanu