研究成果

国際会議

  • Light Cryptography
    著者
    P. Lafourcade, T. Mizuki, A. Nagao, and K. Shinagawa
    会議名
    WISE 2019
    IFIPAICT 552
    ページ
    89–101
    出版社
    Springer
    発行年
    2019
    発表日
    Jun. 26, 2019
    Abstract

    Physical cryptography provides cryptographic protocols using physical objects like cards and envelopes instead of using computers. In this paper, we introduce a new model for physical cryptography, called light cryptography. It uses transparent sheets and some properties of light and shadows. We design several secure light cryptographic protocols: one for set-intersection (which can solve the scheduling problem), one for maximum (which can solve the Yao's Millionaires' problem), one for computing the sum of integers. We believe that our protocols using light cryptography are a powerful tool for information security education because they are fairly simple and fun to use.