Area optimization of lightweight lattice-based encryption on reconfigurable hardware

Abstract

Ideal lattice-based cryptography gained significant attraction in the last years due to its versatility, simplicity and performance in implementations. Nevertheless, existing implementations of encryption schemes reported only results trimmed for high-performance what is certainly not sufficient for all applications in practice. To the contrary, in this work we investigate lightweight aspects and suitable parameter sets for Ring-LWE encryption and show optimizations that enable implementations even with very few resources on a reconfigurable hardware device. Despite of this restriction, we still achieve reasonable throughput that is sufficient for many today's and future applications.