A parallelized way to provide data encryption and integrity checking on a processor-memory bus

Abstract

This paper describes a novel engine, called PE-ICE (Parallelized Encryption and Integrity Checking Engine), enabling to guarantee confidentiality and integrity of data exchanged between a SoC (System on Chip) and its external memory. The PE-ICE approach is based on an existing block-encryption algorithm to which the integrity checking capability is added. Simulation results show that the performance overhead of PE-ICE remains low (below 4%) compared to block-encryption-only systems (which provide data confidentiality only).