Cross-domain broadcast authentication method in space information network

Abstract

The invention discloses a cross-domain broadcast authentication method in a space information network. The method mainly solves the problems in the prior art that the authentication efficiency is low, the extensibility is low and the concurrence of multiple security domains in the space information network is not taken consideration when cross-domain broadcast authentication is carried out. The realization scheme of the method comprises that in a system deployment stage, the terminal and agent of each security domain finish calculating signing work with relatively high costs; in a broadcast information transmission stage, corresponding signatures only need to be taken out from a pre-calculated signature set; moreover, cross-domain transmission of the broadcast information is finished through the agent of each security domain, wherein re-signing needs to be carried out each time when one stage of agent is passed; and finally, a broadcast receiver finishes information authentication through the previous signatures. According to the method, through adoption of a pre-calculation mode, the efficiencies of signing and authenticating the broadcast authentication are greatly improved; moreover, through arrangement of the security domain agents, under a condition of not relating to the security systems of different security domains, the security transmission and cross-domain authentication of the broadcast information are ensured.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a broadcast information authentication method, which can be used for realizing cross-domain broadcast information security authentication in a spatial information network. Background technique [0002] With the rapid development of aerospace technology, my country's space information network is also constantly being built and improved. The space information network refers to a network information system composed of spacecraft with space communication capabilities, such as satellites, space shuttles, etc. and ground stations, which can realize the interconnection and intercommunication functions between ground stations, satellites and space stations. It can connect various satellites, aircraft and other space stations deployed in different orbits and performing different tasks with ground systems. At the same time, aircraft, such as airplanes and hot ai...

AI Technical Summary

Problems solved by technology

However, this scheme only supports information broadcast and authentication in the same network environment, and does not consider the characteristics of the coexistence of multiple security domains in the spatial information network

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