Cryptanalysis of Two Tripartite Authenticated Key Agreement Protocols
Yang Lu, Quanling Zhang, Jiguo Li · 2015
The tripartite authenticated key agreement (AKA) protocol is crucial in providing data confidentiality to subsequent communications among three parties over an insecure public network. In recent years, several identity-based and certificate less tripartite AKA protocols have been proposed. Unfortunately, most of them are insecure. In this paper, we analyze an identity-based tripartite AKA protocol and a certificate less tripartite AKA protocol. Our cryptanalysis shows that one neither meets the desirable security properties.