An Anonymous and Fast Roaming Access Authentication Method in Space Network

Abstract

The invention discloses an anonymous and fast roaming access authentication method in a space network, which can reduce the access authentication delay of a roaming user, improve the user's access experience, and at the same time provide the user with high-intensity anonymity . In addition, the support for user dynamic revocation enables the system to kick out revoked users in a timely manner, and the revocation process will not have too much impact on the performance of user access authentication.

Description

technical field [0001] The invention relates to the technical field of space information network, in particular to an anonymous and fast roaming access authentication method in a space network. Background technique [0002] With the rapid progress of the global integration process, people are more and more eager to communicate anytime and anywhere, but the traditional ground network has been difficult to meet people's communication needs due to factors such as geographical restrictions. The space network using satellites as forwarding nodes can achieve wide-area signal coverage, making the desire for communication anytime and anywhere a reality. This advantage also makes traditional network users (such as cellular network users) prefer to be able to access the space network to obtain roaming services in some extreme environments (such as deserts and oceans); Global roaming is an important measure to promote the development of mobile Internet. So it is very necessary to pro...

AI Technical Summary

Problems solved by technology

However, due to the particularity of the satellite communication environment (such as exposure of communication nodes, high communication delay, etc.), how to communicate securely in the space network is an urgent problem to be solved; in addition, how to protect user privacy and reduce access Authentication delay, making users more willing to roam and access the space network is also a difficult problem to be solved

[0003] Existing solutions cannot adequately address the above-mentioned problems

Some schemes use fixed public key certificates to verify users, which increases the complexity of certificate management and also makes it easier for attackers to link user identity information, resulting in leakage of certain user privacy; while some schemes take into account satellite and Due to the limited resources of mobile users, a lightweight cryptographic algorithm is used in the designed authentication scheme to allow the network control center to authenticate the legitimacy of users, which can reduce the energy consumption of satellites, but at the same time greatly increase the cost of authenticating users. Latency, especially when used in roaming scenarios, will cause unbearable authentication delay

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