A new satellite constellation networking certification and reliable maintenance protocol(DISA)

With the rapid development of satellite technology, the deployment of intensive service applications through satellite has become a trend.In the process of establishing a satellite communication system, there will be some security threats such as counterfeiting, forgery, tampering.This must establish a secure satellite communication system. In this paper, according to the characteristics of satellite communication system, a protocol of satellite network authentication and trusted maintenance is designed.The protocol can accomplish two-way authentication between entities in the satellite network and the credible maintenance of the communication link. The protocol is based on the symmetric encryption system and can adapt to the current satellite load is small, the computing power is limited.This paper also analyses the security of the protocol and can resist replay attacks and man-in-The-middle attacks. Experiments show that the proposed network authentication protocol is 28% faster than the symmetric encryption system. The average time to keep the agreement credible is 254.64 ms.