Controllable and Anonymous Authentication Scheme for Space Networks

This paper analyzed the existing anonymous authentication schemes which have the weakness of high calculation and communication cost and weak security. So we designed a secure and efficient anonymous authentication scheme to meet the need of the space network, which has the characteristic of resource limited, high exposure and intermittent connectivity. At first we proposed a signature algorithm based on certificateless public key cryptosystem and one-off public key, and then presented an anonymous authentication scheme according to the proposed signature algorithm, it needs two message interaction to complete the mutual authentication and key agreement. When the user has the illegal behavior, the service provider can reveal the illegal user’s real identity through cooperation with the trusted center. Compared with the similar literature, the proposed scheme achieves high security with low computation and communication cost. (Abstract