Essam Ghadafi Essam.Ghadafi@uwe.ac.uk
Senior Lecturer in Computer Science
Efficient two-move blind signatures in the common reference string model
Ghadafi, E.; Smart, N. P.
Authors
N. P. Smart
Contributors
D Gollmann
Editor
F.C Freiling
Editor
Abstract
Blind signatures provide a mechanism for achieving privacy and anonymity whereby a user gets the signer to sign a message of his choice without the signer learning the message, or being able to link a signature to the protocol run via which it was obtained. In this paper, we construct a blind signature scheme that requires minimal interaction (two moves) between the user and the signer, and which yields standard signatures. The signature request protocol is akin to the classic, blind-unblind methodology used for RSA blind signatures in the random oracle model; whilst the output signature is a standard Camenisch-Lysyanskaya signature in bilinear groups. The scheme is secure in the common reference string model, assuming a discrete logarithm related assumption in bilinear groups; namely a new variant of the LRSW assumption. We provide evidence for the hardness of our new variant of the LRSW assumption by showing it is intractable in the generic group model. © 2012 Springer-Verlag.
Citation
Ghadafi, E., & Smart, N. P. (2012). Efficient two-move blind signatures in the common reference string model. Lecture Notes in Artificial Intelligence, 7483 LNCS, 274-289. https://doi.org/10.1007/978-3-642-33383-5_17
Journal Article Type | Conference Paper |
---|---|
Acceptance Date | Sep 8, 2012 |
Publication Date | Oct 8, 2012 |
Deposit Date | Mar 23, 2017 |
Publicly Available Date | Mar 29, 2024 |
Journal | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) |
Print ISSN | 0302-9743 |
Electronic ISSN | 1611-3349 |
Publisher | Springer Verlag |
Peer Reviewed | Peer Reviewed |
Volume | 7483 LNCS |
Pages | 274-289 |
Book Title | Information Security |
ISBN | 9783642333828 |
DOI | https://doi.org/10.1007/978-3-642-33383-5_17 |
Keywords | efficient, two-move blind signatures, common reference string model |
Public URL | https://uwe-repository.worktribe.com/output/943985 |
Publisher URL | http://dx.doi.org/10.1007/978-3-642-33383-5_17 |
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