2 papers
cs.CR2025
AEX-NStep: Probabilistic Interrupt Counting Attacks on Intel SGX
Nicolas Dutly, Friederike Groschupp, Ivan Puddu +2
To mitigate interrupt-based stepping attacks (notably using SGX-Step), Intel introduced AEX-Notify, an ISA extension to Intel SGX that aims to prevent deterministic single-stepping…
cs.CR2025
Breaking Bad: How Compilers Break Constant-Time Implementations
Moritz Schneider, Daniele Lain, Ivan Puddu +2
The implementations of most hardened cryptographic libraries use defensive programming techniques for side-channel resistance. These techniques are usually specified as guidelines…