A Provably Secure and Lightweight Identity-Based Two-Party Authenticated Key Agreement Protocol for Vehicular Ad Hoc Networks

• Main Authors: Quanrun Li, Ching-Fang Hsu, Kim-Kwang Raymond Choo, Debiao He
• Format: Article
• Language: English
• Published: Hindawi-Wiley 2019-01-01
• Series: Security and Communication Networks
• Online Access: http://dx.doi.org/10.1155/2019/7871067

As an important part of smart cities, vehicle ad hoc networks (VANETs) have attracted much attention from both industry and academia. In a VANET, generating a secure session key to facilitate subsequent data-in-transit transfer between two or more vehicles is crucial, which can be achieved by using an authenticated key agreement protocol. However, most of the existing identity-based two-party authenticated key agreement protocols have significant computational requirements or are known to be insecure. Thus, in this paper, a secure and efficient identity-based two-party authenticated key agreement protocol is presented by us. This protocol does not involve complex bilinear pairing computations and can generate a valid session key in two rounds. The security of the proposed protocol is proved in the eCK model which has better capability to describe a protocol’s security than the famous CK model, and it has been widely used in the security proof of ID-based key agreement protocols currently. Additionally, we also evaluate its performance for potential utility in a VANET.