A two-way communication system and method between avionics high and low security network domains

Abstract

The invention provides a bidirectional communication system and method for use between an avionics high-security network domain and an avionics low-security network domain, and aims to solve the problem of bidirectional communication between the high-security network domain and the low-security network domain in an avionics system. A module which communicates with a low-security-level applicationis deployed in a security domain boundary control device system application layer, and a module which communicates with a high-security-level application is deployed in a system core layer, so that physical isolation of high-security-level and low-security-level communication control modules inside the modules is realized. An avionics network transmission control module and an avionics network transmission module are adopted to realize data transmission from the low-security network domain to the high-security network domain. An avionics network receiving module is adopted to realize data transmission from the high-security network domain to the low-security network domain, and physical isolation between two types of data communication streams is realized. The problems concerned with bidirectional communication between the high-security network domain and the low-security network domain as well as security isolation and flow direction protection in an airborne environment are solved effectively, and data bidirectional communication between a civil airplane maintenance and information service integral airborne information system and an avionics network is realized.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a two-way communication system and method between high and low security network domains of avionics. Background technique [0002] In the field of aviation, the high-safety applications running in the avionics system provide a guarantee for the normal operation of the entire aircraft. In the traditional aircraft system architecture, avionics data is transmitted in a closed airborne environment through a dedicated bus, so it will not be threatened by external information security, thereby ensuring the security of avionics data. With the extensive application of information technology in civil avionics systems, in order to provide aircraft users (such as aircraft operators, pilots, maintenance personnel, etc.) The airborne network service system constructed by the Ethernet network resides and runs low-security-level applications on the airborne network service system. [0003...

AI Technical Summary

Problems solved by technology

Therefore, high-security network domains will face network information security threats from low-security network domains, which will affect their security and bring security impacts to aircraft operations

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