A system and method for sending a secure multicast transmission. The system includes a computer system coupled to a public network and configured to generate a multicast broadcast, and encrypt the generated multicast broadcast. The system also includes a router coupled to the public network, and a user...http://www.google.com/patents/US7673136?utm_source=gb-gplus-sharePatent US7673136 - Method for secure multicast repeating on the public Internet
