New General Secret Sharing Scheme using Hierarchical Threshold Scheme: Improvement of Information Rates for Specified Participants

Kouya Tochikubo

2020

Abstract

In 2015, a new secret sharing scheme realizing general access structures was proposed (T15). This scheme is based on authorized subsets and the first scheme that can reduce the number of shares distributed to specified participants. Reducing the numbers of shares distributed to specified participants is quite useful in secret sharing schemes. However, this scheme needs to use many secret sharing schemes to obtain shares. In this paper, we propose a new secret sharing scheme realizing general access structures. The proposed scheme can reduce the number of secret sharing schemes to obtain shares by using Tassa’s (k,n)-hierarchical threshold scheme instead of Shamir’s (k,n)-threshold scheme. Thus, the proposed scheme is more efficient than the scheme A of T15 from the viewpoint of the number of secret sharing schemes to obtain shares.

Paper Citation

in Harvard Style

Tochikubo K. (2020). New General Secret Sharing Scheme using Hierarchical Threshold Scheme: Improvement of Information Rates for Specified Participants. In Proceedings of the 6th International Conference on Information Systems Security and Privacy - Volume 1: ICISSP, ISBN 978-989-758-399-5, pages 647-654. DOI: 10.5220/0009103506470654

in Bibtex Style

@conference{icissp20,
author={Kouya Tochikubo},
title={New General Secret Sharing Scheme using Hierarchical Threshold Scheme: Improvement of Information Rates for Specified Participants},
booktitle={Proceedings of the 6th International Conference on Information Systems Security and Privacy - Volume 1: ICISSP,},
year={2020},
pages={647-654},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0009103506470654},
isbn={978-989-758-399-5},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 6th International Conference on Information Systems Security and Privacy - Volume 1: ICISSP,
TI - New General Secret Sharing Scheme using Hierarchical Threshold Scheme: Improvement of Information Rates for Specified Participants
SN - 978-989-758-399-5
AU - Tochikubo K.
PY - 2020
SP - 647
EP - 654
DO - 10.5220/0009103506470654