Overcoming security limitations of Secret Share techniques: The Nested Secret Share

Antonino Galletta, Javid Taheri, Maria Fazio, Antonio Celesti, Massimo Villari

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

Secret Share (SS) is becoming a very hot topic within the scientific community. It allows us to split a secret into fragments and to share them among parties in such a way that a subset can recompose the original information. SS techniques assure a high redundancy degree, but the security level is fixed. Therefore, if a minimum number of peers collude then attackers can recompose the secret easily. A possible approach to improve the security of SS is designing nest fragment sharing techniques. In this paper, we propose the Nested Secret Share (NSS) as a more reliable and scalable strategy. In particular, we discuss the security of NSS considering the number of recomposition attempts that an attacker has to perform to retrieve the secret and then we deeply analyse the impact of the redundancy and the number of peers on the secret management against the percentage of compromised nodes. Experiments were promising and showed that the redundancy degree of SS can be highly improved by NSS.

Original languageEnglish
Title of host publicationProceedings - 2021 IEEE 20th International Conference on Trust, Security and Privacy in Computing and Communications, TrustCom 2021
EditorsLiang Zhao, Neeraj Kumar, Robert C. Hsu, Deqing Zou
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages289-296
Number of pages8
ISBN (Electronic)9781665416580
ISBN (Print)9781665416597
DOIs
Publication statusPublished - 09 Mar 2022
Externally publishedYes
Event20th IEEE International Conference on Trust, Security and Privacy in Computing and Communications, TrustCom 2021 - Shenyang, China
Duration: 20 Oct 202122 Oct 2021

Publication series

NameProceedings - IEEE International Conference on Trust, Security and Privacy in Computing and Communications
ISSN (Print)2324-898X
ISSN (Electronic)2324-9013

Conference

Conference20th IEEE International Conference on Trust, Security and Privacy in Computing and Communications, TrustCom 2021
Country/TerritoryChina
CityShenyang
Period20/10/202122/10/2021

Bibliographical note

Publisher Copyright:
© 2021 IEEE.

Keywords

  • Data Availability
  • Distributed Storage
  • Nested Secret Share
  • Secret Share
  • Security

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Information Systems
  • Information Systems and Management
  • Safety, Risk, Reliability and Quality

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