Dynamic threshold scheme based on the definition of cross-product in an N-dimensional linear space

Chi Sung Laih, Lein Harn, Jau Yien Lee, Tzonelih Hwang

研究成果: Conference contribution

30 引文 斯高帕斯(Scopus)

摘要

This paper investigates the characterizations of threshold/ramp schemes which give rise to the time-dependent threshold schemes. These schemes are called the “dynamic threshold schemes” as compared to the conventional time-independent threshold scheme. In a (d, m, n, T) dynamic threshold scheme, there are n secret shadows and a public shadow, pj, at time t=tj, 1≤tj≤T. After knowing any m shadows, m≤n, and the public shadow, pj, we can easily recover d master keys, k1 j, K2 j, …, and Kd j. Furthermore, if the d master keys have to be changed to Kj+1 1,Kj+ ½,…,and Kj+1d for some security reasons, only the public shadow, pj, has to be changed to pj+1. All the n secret shadows issued initially remain unchanged. Compared to the conventional threshold/ramp schemes, at least one of the previous issued n shadows need to be changed whenever the master keys need to be updated for security reasons. A (1, m, n, T) dynamic threshold scheme based on the definition of cross-product in an N- dimensional linear space is proposed to illustrate the characterizations of the dynamic threshold schemes.

原文English
主出版物標題Advances in Cryptology — CRYPTO 1989, Proceedings
編輯Gilles Brassard
發行者Springer Verlag
頁面286-298
頁數13
ISBN(列印)9780387973173
DOIs
出版狀態Published - 1990
事件Conference on the Theory and Applications of Cryptology, CRYPTO 1989 - Santa Barbara, United States
持續時間: 1989 8月 201989 8月 24

出版系列

名字Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
435 LNCS
ISSN(列印)0302-9743
ISSN(電子)1611-3349

Other

OtherConference on the Theory and Applications of Cryptology, CRYPTO 1989
國家/地區United States
城市Santa Barbara
期間89-08-2089-08-24

All Science Journal Classification (ASJC) codes

  • 理論電腦科學
  • 電腦科學(全部)

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