2 citations · 5 across the 5 of their papers we have counts for
4 papers · 1 filter
Cassandra: Efficient Enforcement of Sequential Execution for Cryptographic Programs (Extended Version)
Ali Hajiabadi, Trevor E. Carlson
Constant-time programming is a widely deployed approach to harden cryptographic programs against side channel attacks. However, modern processors often violate the underlying assum…
Mitigating Speculation-based Attacks through Configurable Hardware/Software Co-design
Ali Hajiabadi, Archit Agarwal, Andreas Diavastos +1
New speculation-based attacks that affect large numbers of modern systems are disclosed regularly. Currently, CPU vendors regularly fall back to heavy-handed mitigations like using…
New Cross-Core Cache-Agnostic and Prefetcher-based Side-Channels and Covert-Channels
Yun Chen, Ali Hajiabadi, Lingfeng Pei +1
In this paper, we reveal the existence of a new class of prefetcher, the XPT prefetcher, in the modern Intel processors which has never been officially documented. It speculatively…
Mitigating Power Attacks through Fine-Grained Instruction Reordering
Yun Chen, Ali Hajiabadi, Romain Poussier +3
Side-channel attacks are a security exploit that take advantage of information leakage. They use measurement and analysis of physical parameters to reverse engineer and extract sec…