TY - GEN

T1 - Fourier-based Verifiable Function Secret Sharing

AU - Koshiba, Takeshi

N1 - Funding Information:
This work is supported by JSPS Grant-in-Aids for Scientific Research (A) JP16H01705 and for Challenging Exploratory Research JP19K22849.
Publisher Copyright:
© 2020 IEICE.

PY - 2020/10/24

Y1 - 2020/10/24

N2 - Function secret sharing is a cryptographic protocol for secure distribution of a secret function. While the notion of function secret sharing is a conceptual extension of secret sharing schemes, it faces difficulties in its constructions. We demonstrate that if we consider function secret sharing schemes for Fourier basis functions then we can enjoy the linear properties of linear secret sharing schemes to construct function secret sharing schemes. In this paper, we construct a verifiable function secret sharing by using Fourier basis functions, where players can verify if the dealer is cheating.

AB - Function secret sharing is a cryptographic protocol for secure distribution of a secret function. While the notion of function secret sharing is a conceptual extension of secret sharing schemes, it faces difficulties in its constructions. We demonstrate that if we consider function secret sharing schemes for Fourier basis functions then we can enjoy the linear properties of linear secret sharing schemes to construct function secret sharing schemes. In this paper, we construct a verifiable function secret sharing by using Fourier basis functions, where players can verify if the dealer is cheating.

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M3 - Conference contribution

AN - SCOPUS:85102629529

T3 - Proceedings of 2020 International Symposium on Information Theory and its Applications, ISITA 2020

SP - 442

EP - 446

BT - Proceedings of 2020 International Symposium on Information Theory and its Applications, ISITA 2020

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 16th International Symposium on Information Theory and its Applications, ISITA 2020

Y2 - 24 October 2020 through 27 October 2020

ER -