HyCaMi: High-Level Synthesis for Cache Side-Channel Mitigation

ePrint Report: HyCaMi: High-Level Synthesis for Cache Side-Channel Mitigation

Heiko Mantel, Joachim Schmidt, Thomas Schneider, Maximilian Stillger, Tim Weißmantel, Hossein Yalame

Cache side-channels are a major threat to cryptographic implementations, particularly block ciphers. Traditional manual hardening methods transform block ciphers into Boolean circuits, a practice refined since the late 90s. The only existing automatic approach based on Boolean circuits achieves security but suffers from performance issues. This paper examines the use of Lookup Tables (LUTs) for automatic hardening of block …

block cache channel ciphers cryptographic eprint report hardening high major mitigation practice report schneider side-channel thomas threat tim transform