System and method for private network access authentication and key negotiation of space vehicle and earth track

Abstract

The invention discloses an access authentication and key agreement protocol and a method of a special network for space-aeronautics-vehicle-ground tracks. An authentication system consists of a core network configuration authentication subsystem and a user access authentication subsystem, which completes authentication and key agreement between an airship and a security and operation guarantee center and authentication and key agreement between a user and the airship respectively. In view of the structure and communication characteristics of the special network for space-aeronautics-vehicle-ground tracks, a core network configuration subsystem is constructed. Authentication and key agreement between the airship and the security and operation guarantee center is completed with a public key password to get symmetric keys. Symmetric keys used between the user and the airship are mutually authenticated on the basis of an LTE protocol to get a session key. The problem on secure communication and key updating is solved. There is no need for an authentication center to participate in user access authentication and key agreement. The use of symmetric keys ensures light workload and high efficiency. The method is used in access authentication of airship, high-speed rail and trackside equipment users and key agreement, and ensures secure transmission of a wireless communication link from the user to the airship and to the security and operation guarantee center.

Description

technical field [0001] The invention belongs to the field of communication technology, and relates to access authentication and key negotiation of an aerospace information network, in particular to an access authentication and key negotiation protocol and method for a dedicated orbital network oriented to aerospace, vehicle, and ground information integration. It is used for access authentication and key negotiation of user equipment such as airships, high-speed railways, and trackside equipment to ensure safe transmission of wireless communication links from user equipment to airships to security and operation support centers. Background technique [0002] Space-Sky-Vehicle-Ground Information Integrated Track Special Network uses the stratospheric airship as a relay platform, and provides wireless broadband point-to-point communication for user equipment such as ground high-speed rail, trackside sensors, and drones by installing communication signal receiving, processing, an...

AI Technical Summary

Problems solved by technology

In other words, a large number of public key encryption and decryption calculations for transmitting authentication data require terminal computing capabilities, and the calculation time is increased, and the efficiency of the access process is reduced

[0007] The existing aerospace information network access authentication scheme solves the problem of mutual authentication and establishment of secure communication between mobile terminals under the coverage area of ​​the space-based platform, but has a low degree of fit with the dedicated network for aerospace-vehicle-ground information integration, and does not involve the core The authentication and key agreement method of the network part; even for the improvement scheme of the LTE security authentication protocol, the global public key cryptosystem is used to solve the security vulnerability, but it introduces a large amount of calculation, and the access efficiency of the user equipment is low, so it is not necessary Applicable to the dedicated network application scenario of air-sky-vehicle-ground information integration

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