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Communication Dans Un Congrès Année : 2022

Hide a Liar: Card-Based ZKP Protocol for Usowan

Résumé

A Zero-Knowledge Proof (ZKP) protocol allows a participant to prove the knowledge of some secret without revealing any information about it. While such protocols are typically executed by computers, there exists a line of research proposing physical instances of ZKP protocols. Up to now, many card-based ZKP protocols for pen-and-pencil puzzles, like Sudoku, have been designed. Those games, mostly edited by Nikoli, have simple rules, yet designing them in card-based ZKP protocols is non-trivial. This is partly due to the fact that the solution should not be leaked during the protocol. In this work, we propose a card-based protocol for Usowan, a Nikoli game. In Usowan, for each room of a puzzle instance, there is exactly one piece of false information. The goal of the game is to detect this wrong data amongst the correct data and also to satisfy the other rules. Designing a card-based ZKP protocol to deal with the property of detecting a liar has never been done. In some sense, we propose a physical ZKP for hiding of a liar.
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Dates et versions

hal-04403799 , version 1 (18-01-2024)

Identifiants

Citer

Léo Robert, Daiki Miyahara, Pascal Lafourcade, Takaaki Mizuki. Hide a Liar: Card-Based ZKP Protocol for Usowan. International Conference on Theory and Applications of Models of Computation, Sep 2022, Tianjin (China), China. pp.201-217, ⟨10.1007/978-3-031-20350-3_17⟩. ⟨hal-04403799⟩
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