Authenticated Group Key Research Articles

Group Key Authentication scheme for Vanet INtrusion detection (GKAVIN)

Security must be provided in VANET as it is open to various attacks due to malicious vehicle, Brute force attack, misbehaving and faulty nodes, malicious users, and malicious nodes. The attacks can be occurred due to the lack of authentication. To overcome this problem, in this paper, we propose to develop a group key authentication and misbehaviour detection in VANET. Initially, we form clusters with three types of nodes within a certain transmission range namely Unique Node, Sub Unique Node, and Normal Node. Handshaking can be performed followed by message signing. The message is verified, and then group key is generated with subsequent key generation at each time slot. Finally, location information and time about vehicles can be used to detect malicious behaviours. Simulation results show that the proposed technique can achieve more packet delivery ratio with reduced delay, overhead, and packet drop.

A Deniable Group Key Authentication Scheme under Random Oracle Model

A Deniable Group Key Authentication Scheme under Random Oracle Model

Authenticated key agreement in dynamic peer groups

Many group-oriented applications in distributed systems, such as teleconferencing and cooperative works, involve dynamic peer groups. In order to secure communications in dynamic peer groups, authenticated key agreement protocols are required. In this paper, we propose a new authenticated key agreement protocol, composed of a basic protocol and a dynamic protocol, for dynamic peer groups. With the basic protocol, a secret group key can be achieved in a peer group via group handshake, secret broadcast, key derivation and key confirmation phases. By the dynamic protocol, a new secret group key can be reached when member or mass join, group mergence, group division, member or mass quit occurs in a dynamic peer group. Security analysis shows that our protocol offers explicit group key authentication and prevents from both passive and active attacks. In our basic protocol, each group member equally contributes to the secret group key in parallel and guarantees key freshness.