Next Generation Low Size Weight and Power (SWaP) Space Cyber

摘要

Small form factor spacecraft can be used for more operational missions if a few key technology hurdles are met. One example is cyber security including data link encryption. Traditional systems are not designed with on-board managers or flexible, modern interfaces; further, they employ little to no software controls and data handling features making the system quite basic in overall function. As a result, unique interface circuitry and software handlers are required 'around' the cyber units in order to use them thus increasing the size, weight and power (SWaP) of the overall cyber security system. Much like the evolution of the cellular phone, modem processing and highly integrated electronics allow space cyber systems to become much more than basic bulk encryptors. This paper focuses on some of the current approaches and inherent features of advanced devices that can be leveraged for maximizing space system security in highly compact solutions. Methods include use of advanced industrial grade Field Programmable Gate Arrays (FPGAs) and System on Chip (SoC) devices with physical internal isolation, built-in hypervisor support, packetized encryption using Internet protocols, and use of lightweight crypto algorithms. The impact of these approaches and design features not only achieve much lower SWaP targets but also significantly enhance the usability and efficiency of a spacecraft cyber system.