Designing of authentication protocol for multi-level security virtual desktops

In order to address the problems of cross domain access and dynamic authentication in the multi-level security virtual desktops, this paper proposes a authentication protocol based on multi-level security virtual desktops. Firstly, the user behavior authentication mechanism is introduced into the protocol. It could achieve the legitimacy of the dynamic authentication of user behavior and improve the flexibility and security of protocol. Secondly, the protocol uses digital signature based on elliptic curve cryptography. Symmetric encryption algorithm is used to reduce the computational complexity of it. The large integer inverse operation is eliminated in the signature equation, which guarantees the safety grade of the signature while improves its efficiency. Finally, the security of authentication protocol is proved by BAN logic.