An Extended Verifiable Secret Redistribution Protocol for Archival Systems

Authors:
V. H. Gupta;K. Gopinath
Affiliations:
Indian Institute of Science,Bangalore, India;Indian Institute of Science,Bangalore, India
Venue:
ARES '06 Proceedings of the First International Conference on Availability, Reliability and Security
Year:
2006

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Abstract

Existing protocols for archival systems make use of verifiability of shares in conjunction with a proactive secret sharing scheme to achieve high availability and long term confidentiality, besides data integrity. In this paper, we extend an existing protocol (Wong et al. [9]) to take care of more realistic situations. For example, it is assumed in the protocol of Wong et al. that the recipients of the secret shares are all trustworthy; we relax this by requiring that only a majority is trustworthy.