Paper 2009/388

A Simple Secret Sharing Scheme for Hierarchical Threshold Access Structures

Kerem Kaskaloglu and Ferruh Ozbudak

Abstract

One of the recent generalizations of (t; n) secret sharing for hierarchical threshold secret access structures is given by Tassa, where he answer the natural question of sharing a secret among three employ- ees at least one of which is a manager. However, the schemes proposed to address this problem, require some significant amount of theoreti- cal background. We give a simpler yet efficient method for hierarchical threshold access structures. Our scheme employs a different approach than previous works, as it involves a certain distribution of polynomi- als, where members of higher compartments are given a summation of evaluations of higher number of polynomials resulting in a hierarchical effect. The simplicity of our scheme is advantageous both in theory and in practical implementations.

Metadata
Available format(s)
-- withdrawn --
Category
Cryptographic protocols
Publication info
Published elsewhere. has not been published elsewhere
Keywords
secret sharingmultipartite access structureshierarchical threshold access structures.
Contact author(s)
History
2009-12-24: withdrawn
2009-08-15: received
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Short URL
https://ia.cr/2009/388
License
Creative Commons Attribution
CC BY
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