A method and apparatus for providing security in a group communication network provides for receiving an encryption key, encrypting media for transmission to a controller using the received encryption key, the encrypted media being directed to another communication device, and communicating the encrypted...http://www.google.fr/patents/US7069031?utm_source=gb-gplus-shareBrevet US7069031 - Communication device for providing security in a group communication network
Communication device for providing security in a group communication network
