Talk: Blurring Enclave Page Accesses in Space and Time with Compile-Time Instrumentation

Abstract

This talk overviews our recent work on TLBlur, a novel approach that leverages compiler instrumentation and the recent AEX-Notify hardware extension in modern, off-the-shelf Intel SGX processors to limit the bandwidth of controlled-channel attacks at acceptable performance overhead. We also discuss ongoing efforts to reduce instrumentation costs through binary layout optimizations.