Customizable cryptographic architecture for government and military communications applications

With the continued international proliferation of military communication technology, equipment vendors are challenged to provide communications security (COMSEC) solutions that are appropriate for these applications. Addressing these challenges is complicated by the fact that no encryption standard exists for international government and military communications applications. Harris Corporation has leveraged its expertise in encryption algorithm design, type 1 hardware design, and embedded system design to develop a cost-effective, customizable encryption algorithm for military and government communications applications. The algorithm is the second generation of the highly successful Citadel^™ cryptographic algorithm. It was designed against a military/government threat model and specifically addresses the rigorous requirements dictated by these applications. It does so in a manner that is both flexible and cost effective. This paper will begin with a brief review of the requirements for military-grade encryption products. It will continue with an overview of the algorithm design along with discussion on the features responsible for its military grade strength.