2 papers
cs.CR2026
Physical Time-Lock Puzzles
Niloufar Sayadi, Chenglu Jin, Phuong Ha Nguyen +2
Traditional time-lock puzzles enforce delayed access to encrypted secrets by relying on inherently sequential computational steps. However, since software-based constructions impos…
cs.CR2025
Breaking XOR Arbiter PUFs with Chosen Challenge Attack
Niloufar Sayadi, Phuong Ha Nguyen, Marten van Dijk +1
The XOR Arbiter PUF was introduced as a strong PUF in 2007 and was broken in 2015 by a Machine Learning (ML) attack, which allows the underlying Arbiter PUFs to be modeled individu…