ISSN:
1573-7586
Keywords:
Secret sharing schemes
;
multiple secrets
;
threshold schemes
Source:
Springer Online Journal Archives 1860-2000
Topics:
Computer Science
,
Mathematics
Notes:
Abstract A multisecret threshold scheme is a system that protects a number of secrets (or keys) among a group of participants, as follows. Given a set of n participants, there is a secret s K associated with each k–subset K of these participants. The scheme ensures that s K can be reconstructed by any group of t participants in K ( $$1 〈 t 〈 k$$ ). A lower bound has been established on the amount of information that participants must hold in order to ensure that any set of up to w participants $$(0 \leqslant w \leqslant n - k + t - 1)$$ cannot obtain any information about a secret with which they are not associated. In this paper, for parameters t=2 and w=n-k+t-1, we give a construction for multisecret threshold schemes that satisfy this bound.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1027380522085
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