In computer networking, Photuris is a session key management protocol defined in RFC 2522. Photuris is the Latin name of a genus of fireflies native to North America that mimic the signals of other firefly species. The name was chosen as a reference to the (classified) FIREFLY key exchange protocol developed by the National Security Agency and used in the STU-III secure telephone, which is believed to operate by similar principles. See also FIREFLY External links RFC 2522 Test implementation of Photuris Network protocols