Lrcrypt: Leakage-resilient cryptographic system (design and implementation)

Abstract

Due to the advancement of side-channel attacks, leakage-resilient cryptography has attracted a lot of attention in recent years. Many fruitful results have been proposed by researchers. Most, if not all, of these results are theoretical in nature. Not much has been done to realize these schemes for practical use. In this work, we design and provide a leakage-resilient cryptographic system LRCRYPT with programming interfaces for users to build leakage-resilient cryptographic applications. LRCRYPT consists of a few fundamental building blocks that perform leakage-resilient public-key encryption, leakage-resilient signature, and leakage-resilient secret-key encryption, which can also be extended to many existing leakage resilience cryptographic primitives. We have conducted both a security analysis and a performance evaluation on LRCRYPT . To our knowledge, LRCRYPT is the first to work in this domain.