The HM-QCT protocol, presented by Mazzoncini et al. in 2025, uses a unique feature of quantum information to achieve quantum key distribution (QKD) with secret-key rates beyond standard constructions. The protocol has been designed in the hybrid quantum-computational time-lock (QCT) security model which imposes two ind...
Jean Snyman, Ioana Boureanu, Daniel Gardham· Proceedings of the 2026 ACM...· 0 citations
A cut-off theorem is obtained: secrecy violations in systems with arbitrarily many sessions are always witnessed in systems of bounded size, so secrecy also reduces to a coverability problem in WSTS.
Ioana Boureanu, R. Ramanujam, Srinibas Swain· 0 citations
A rational Dolev--Yao attacker is introduced, a DY intruder whose actions carry costs and whose security-violating goals carry rewards, and a protocol is called rationally secure when no intruder strategy achieves a violation with strictly positive utility, expressed in a weighted fragment of ATL (WATL).
Ioana Boureanu, R. Ramanujam· 0 citations
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