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A short redactable signature scheme using pairing

Title
A short redactable signature scheme using pairing
Authors
Lim S.Lee E.Park C.-M.
Ewha Authors
임선간이은정
SCOPUS Author ID
임선간scopusscopus
Issue Date
2012
Journal Title
Security and Communication Networks
ISSN
1939-0122JCR Link
Citation
vol. 5, no. 5, pp. 523 - 534
Indexed
SCIE; SCOPUS WOS scopus
Abstract
Redactable signature schemes permit deletion of arbitrary substrings of a signed document while preserving the authenticity of the remaining document. Most of known redactable signatures based on pairing have large-sized signatures and the sizes depend on the product of security parameter and the number of blocks of the redacted document. In this paper, we present a short redactable signature scheme based on pairing. We modify Waters signature scheme to obtain an underlying standard signature defined on composite-order bilinear group. The modified scheme satisfies the unforgeability under the known message attack based on the Computational Diffie-Hellman assumption. Based on the modified Waters signature, we propose a short redactable signature that is existentially unforgeable under random message attack and weakly private. The size of the proposed scheme is 20% of known redactable signatures using aggregated pairing-based signatures when half of the message blocks are deleted. © 2011 John Wiley & Sons, Ltd.
DOI
10.1002/sec.346
Appears in Collections:
연구기관 > 수리과학연구소 > Journal papers
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