A New Authenticated Key Agreement Protocol.

Massoud, Hadian, Dehkordi +2 more

YuXiu-Ying, ZhangWen-Fang, HeDa-Ke

Authenticated key agreement (AKA) protocol allows two or multi-parties exchange messages, authenticate each other and establish shared session keys for later secure communications over an open network. The certificateless -based authenticated key agreement protocols combined the advantages of the traditional PKI and the identity-based cryptography. This paper analyzes a proposed AKA protocol[6] and presents a new certificateless AKA protocol. Furthermore, we examines the security of the new protocol and compare it to the existing certificateless key agreement protocols in efficiency. The new proposed scheme achieves almost all of the desired security attributes and is more practicable.

LI Xu-don

In order to resist against the active attacks,Chen Jia-qi proposed an authenticated tripartite key agreement protocol based on certificateless cryptography in 2010. However,the protocol couldn't resist the passive opponent's attack,and it also couldn't meet some security attributes stated by Chen Jia-qi. In order to solve the above problems,based on an efficient certificateless two-party authenticated key agreement protocol given by He De-biao,this paper proposed a new certificateless authenticated tripartite key agreement protocol. The security and efficiency of the new protocol were analyzed. The result shows that the new protocol satisfies the security properties of the certificateless authenticated tripartite key agreement protocol. Compared with the protocol proposed by Chen Jia-qi,the efficiency of the new protocol is higher,which attributes to the reduced number of pairings in the new protocol.

Hyoung-Mok Lee, Eun‐Kyung Ryu, Kee-Won Kim +2 more

Noel McCullagh, Paulo S. L. M. Barreto

Hongyuan Wang

Now,most of the tripartite authenticated key agreement protocols have been proven to be insecure.We design the new identity-based tripartite authenticated key agreement protocol,it is based on the secure IBE scheme by Peng.This protocol's security based on bilinear decisional Diffie-Hellman assumption.This protocol could provide known key security,PKG forward secrecy,key-compromise impersonation resilience and unknown key-share resilience,so it's a secure tripartite authenticated key agreement protocol.