A trust web keying process provides secure peer networking of computing devices on an open network. A device is initially keyed at distribution to an end user or installer with a device-specific cryptographic key, and programmed to respond only to peer networking communication secured using the device's...http://www.google.com/patents/US7290132?utm_source=gb-gplus-sharePatent US7290132 - Establishing secure peer networking in trust webs on open networks using shared secret device key
