7 papers
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…
Function Recovery Attacks in Gate-Hiding Garbled Circuits using SAT Solving
Chao Yin, Zunchen Huang, Chenglu Jin +2
Semi-Private Function Evaluation (SPFE) enables joint computation while protecting both input data and the function itself. A practical instantiation is gate-hiding garbled circuit…
Fundamental Limitations of Favorable Privacy-Utility Guarantees for DP-SGD
Murat Bilgehan Ertan, Marten van Dijk
Differentially Private Stochastic Gradient Descent (DP-SGD) is the dominant paradigm for private training, but its fundamental limitations under worst-case adversarial privacy defi…
On the Evidentiary Limits of Membership Inference for Copyright Auditing
Murat Bilgehan Ertan, Emirhan Böge, Min Chen +2
As large language models (LLMs) are trained on increasingly opaque corpora, membership inference attacks (MIAs) have been proposed to audit whether copyrighted texts were used duri…
DP-TLDM: Differentially Private Tabular Latent Diffusion Model
Chaoyi Zhu, Jiayi Tang, Juan F. Pérez +2
Synthetic data from generative models emerges as the privacy-preserving data sharing solution. Such a synthetic data set shall resemble the original data without revealing identifi…
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…