This paper explores policies and technologies that can be used to fully secure the avionics bay and cockpit from future cybersecurity threats using the Zero Trust Model.

A backwards compatible method of securing an ARINC-429 databus by adding a periodic cryptographic signature to ARINC-429 data stream. The method can be used to secure ARINC-429 interfaces and can comprise a portion of a complete Zero Trust Avionics Solution.

This whitepaper discusses the issues facing the aviation industry and proposes a new way forward.