News

May 15, 2026 Our paper Quantum Oracle Distribution Switching and its Applications to Fully Anonymous Ring Signatures has been accepted for a talk at QCrypt 2026 in Ottawa. We take a closer look at how quantum oracle indistinguishability behaves when the closeness of two distributions is measured using the Rényi divergence instead of statistical distance, and apply our results to give QROM proofs for various ring signature constructions — crucial for post-quantum Signal-conform key exchange.
Mar 20, 2026 Our paper Concretely Efficient Blind Signatures Based on VOLE-in-the-Head Proofs and the MAYO Trapdoor has been accepted for a talk at PrivCrypt2026 (affiliated event at Eurocrypt 2026), where I will talk about our work.
Dec 20, 2025 Our paper Concretely Efficient Blind Signatures Based on VOLE-in-the-Head Proofs and the MAYO Trapdoor has been accepted at USENIX Security 2026. We propose PoMFRIT, a post-quantum blind signature scheme that follows the standard Fischlin-style blind signature paradigm where the zero-knowledge proof for MAYO (and SHAKE256) is constructed using VOLEitH.