A New ID-Based Authenticated Key Agreement Between Members of Distinct Domains

Most ID-based AKA protocols require that all parties are members of the same domain. In this paper, we present a new ID-based AKA protocol between members of distinct domains, which makes use of a new technique called twin Diffie-Hellman problem proposed by Cash, Kiltz and Shoup. It is inspired on a new ID-based two-party authenticated key exchange protocol proposed by Hai Huang and Zhenfu Cao. We show that our scheme is secure in the enhanced Canetti-Krawczyk (eCK) model, which better supports the adversary´s queries than previous AKA models. To the best of our knowledge, our scheme is the first ID-based AKA protocol between members of distinct domains provably secure in eCK model.