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IEICE TRANSACTIONS on Fundamentals

Secure Grouping Protocol Using a Deck of Cards

Yuji HASHIMOTO, Kazumasa SHINAGAWA, Koji NUIDA, Masaki INAMURA, Goichiro HANAOKA

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Summary :

We consider a problem, which we call secure grouping, of dividing a number of parties into some subsets (groups) in the following manner: Each party has to know the other members of his/her group, while he/she may not know anything about how the remaining parties are divided (except for certain public predetermined constraints, such as the number of parties in each group). In this paper, we construct an information-theoretically secure protocol using a deck of physical cards to solve the problem, which is jointly executable by the parties themselves without a trusted third party. Despite the non-triviality and the potential usefulness of the secure grouping, our proposed protocol is fairly simple to describe and execute. Our protocol is based on algebraic properties of conjugate permutations. A key ingredient of our protocol is our new techniques to apply multiplication and inverse operations to hidden permutations (i.e., those encoded by using face-down cards), which would be of independent interest and would have various potential applications.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E101-A No.9 pp.1512-1524
Publication Date
2018/09/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E101.A.1512
Type of Manuscript
Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category

Authors

Yuji HASHIMOTO
  Tokyo Denki University,the National Institute of Advanced Industrial Science and Technology
Kazumasa SHINAGAWA
  the National Institute of Advanced Industrial Science and Technology,Tokyo Institute of Technology
Koji NUIDA
  the National Institute of Advanced Industrial Science and Technology
Masaki INAMURA
  Tokyo Denki University
Goichiro HANAOKA
  the National Institute of Advanced Industrial Science and Technology

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