ARINC Report 835-2:2025

This document provides a comprehensive overview of methods and standards for securing loadable software parts (LSPs) used in aircraft systems. It focuses on ensuring the integrity, authenticity, and trustworthiness of aircraft software, independent of the transport mechanism or media type, through the use of digital signatures and Public Key Infrastructure (PKI) technologies. The document captures solutions developed by major aerospace manufacturers and industry participants and encourages standardization to reduce costs and complexity in software security processes.