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Authors:
Takumi Sakurai
Yuichi Kaji
Keywords: Card-based cryptography; Secure multi-party computation; Updown cards.
Abstract:
Besides the majorly investigated two-colored cards, there are studies of card-based protocols that use updown cards printed with rotationally asymmetric symbols. A card-based protocol for updown cards is advantageous in making the protocol simple and efficient, but not so much effort has been made to develop updown card protocols, and not so much is known about the relation between protocols for two-colored cards and updown cards. This study discusses the sufficient condition of two-colored cards protocols under which the protocol can be converted for updown cards, and describes the actual conversion procedure. With the conversion, it is clarified that there are updown card protocols that compute an arbitrary Boolean function with three additional cards, and protocols that compute a symmetric Boolean function with only one additional card.
Pages: 33 to 39
Copyright: Copyright (c) IARIA, 2025
Publication date: October 26, 2025
Published in: conference
ISSN: 2162-2116
ISBN: 978-1-68558-306-4
Location: Barcelona, Spain
Dates: from October 26, 2025 to October 30, 2025