Aiming at the security threats existing in multicast signaling process in automatic switched optical network(ASON),an efficient secure multicast signaling protocol based on the GMPLS RSVP-TE is presented.This protocol uses the P2MP signaling model,and makes use of digital signature and message feedback security mechanisms to protect the constant and important variable objects in signaling messages.In addition,considering the dynamic character of group members,this protocol adopts efficient group key managem...