Safety and security are integral parts of any avionics system. Such systems operate with critical data and often utilize complex SoC (system on a chip) solutions to realize their functionality. These SoCs are typically equipped with modern operating systems providing various means to safeguard the critical data using encryption, however, they are mainly tailored for standard storage devices such as HDDs and SSDs.

The goal of this thesis is to explore and evaluate the utilization of state-of-the-art encryption algorithms provided by Linux-X operating system to protect data located at storage mediums typically used by SoCs in avionics systems, such as the flash or RAM memories. The work includes designing a solution to encrypt and decrypt at least one category of critical data (the operating system, application, and/or user data files) on a chosen SoC platform and implementing a PoC (proof of concept) of this solution. The PoC is then used to evaluate different cryptographic algorithms from a performance point of view, namely the performance of the system startup and file operations.