A lightweight multi-user authentication scheme based on cellular automata in cloud environment

In cloud computing, the lightweight, efficient and secure authentication scheme is needed because it is to handle large amounts of data in real-time. Hence, this paper proposes an efficient and lightweight multi-user authentication scheme based on cellular automata (CA) in cloud computing environments. In the proposed scheme, an authentication process is securely performed by a CA-based One-time Password (OTP) authentication which is a randomized evolution. The experiments prove the security of the proposed scheme.