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arXiv · 2402.16290

Card-Based Overwriting Protocol for Equality Function and Applications

Suthee Ruangwises·Tomoki Ono·Yoshiki Abe·Kyosuke Hatsugai·Mitsugu Iwamoto
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Abstract

Research in the area of secure multi-party computation with an unconventional method of using a physical deck of playing cards began in 1989 when den Boer proposed a protocol to compute the logical AND function using five cards. Since then, the area has gained interest from many researchers and several card-based protocols to compute various functions have been developed. In this paper, we propose a card-based protocol called the overwriting protocol that can securely compute the $k$-candidate $n$-variable equality function $f: \{0,1,\ldots ,k-1\}^n \rightarrow \{0,1\}$. We also apply the technique used in this protocol to compute other similar functions.

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Suthee Ruangwises, Tomoki Ono, Yoshiki Abe, Kyosuke Hatsugai, Mitsugu Iwamoto. 2024-02-26. Card-Based Overwriting Protocol for Equality Function and Applications. https://doi.org/10.1007/978-3-031-63742-1_2

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