Design and Analysis of Dynamic Group Key Agreement Protocol with UC Security
Yang Chun-ya · Communications technology · 2014
Aiming at the fact that the concurrent group key agreement( GKA) protocol is discussed only within the isolate model,and based on m-ary tree decisional Diffie-Hellman within the framework of universally composable( UC) security,a group key agreement protocol is designed,and the ideal functionality model for GKA protocol formulated. The security modular design and implementation of GKA protocol indicates that this protocol could meet the requirement of UC security. Compared with the similar protocol of GKA,this new protocol has the advantages of less communication and computation overhead,while supports group members in their dynamic joining and exiting.