Showing quant-phShow all
3 papers · 1 filter
quant-ph2026★ 1 cited
How to Sign Quantum Messages
Mohammed Barhoush, Louis Salvail
Signing quantum messages has long been considered impossible even under computational assumptions. In this work, we challenge this notion and provide three innovative approaches to…
quant-ph2024
Fiat-Shamir for Proofs Lacks a Proof Even in the Presence of Shared Entanglement
Frédéric Dupuis, Philippe Lamontagne, Louis Salvail
We explore the cryptographic power of arbitrary shared physical resources. The most general such resource is access to a fresh entangled quantum state at the outset of each protoco…
quant-ph2024
Quantum Cheques
Mohammed Barhoush, Louis Salvail
Publicly-verifiable quantum money has been a central and challenging goal in quantum cryptography. To this day, no constructions exist based on standard assumptions. In this study,…