Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/3648
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Type: Journal article
Title: Size of broadcast in threshold schemes with disenrollment
Author: Barwick, S.
Jackson, W.
Martin, K.
Wild, P.
Citation: Lecture Notes in Computer Science/Lecture Notes in Artificial Intelligence, 2002; 2384:71-88
Publisher: Springer-Verlag Berlin
Issue Date: 2002
ISSN: 0302-9743
1611-3349
Statement of
Responsibility: 
S. G. Barwick, W. -A. Jackson, Keith M. Martin, Peter R. Wild
Abstract: Threshold schemes are well-studied cryptographic primitives for distributing information among a number of entities in such a way that the information can only be recovered if a threshold of entities co-operate. Establishment of a threshold scheme involves an initialisation overhead. Threshold schemes with disenrollment capability are threshold schemes that enable entities to be removed from the initial threshold scheme at less communication cost than that of establishing a new scheme. We prove a revised version of a conjecture of Blakley, Blakley, Chan and Massey by establishing a bound on the size of the broadcast information necessary in a threshold scheme with disenrollment capability that has minimal entity information storage requirements. We also investigate the characterisation of threshold schemes with disenrollment that meet this bound.
RMID: 0020021281
DOI: 10.1007/3-540-45450-0_6
Appears in Collections:Pure Mathematics publications

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