A Token-based Authentication and Key Agreement Protocol for Cloud Computing

Cloud computing has been widely used as an effective way to effectively solve the problem that local devices cannot afford to store or process large amounts of data. However, cloud computing also faces many security issues, especially the issue of access rights. In order to solve this problem, a large number of authentication and key agreement protocols have been proposed. However, these protocols still have problems such as not being lightweight enough. Therefore, this paper proposes a token-based authentication and key agreement protocol. When the terminal device performs mutual authentication with the cloud server during the validity period of the token, the computational cost can be greatly reduced. The comparison with other related protocols also shows that the computational cost of our protocol is lower.