Strongly Unforgeable Ring Signature Scheme from Lattices in the Standard Model
Joint Authors
Noh, Geontae
Jeong, Ik Rae
Chun, Ji Young
Source
Journal of Applied Mathematics
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-05-05
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
In a ring signature scheme, a user selects an arbitrary ring to be able to sign a message on behalf of the ring without revealing the signer’s identity.
Whistle-blowers especially find this useful.
To date, various ring signature schemes have been proposed, all considered to be secure as existentially unforgeable with respect to insider corruption; that is, an adversary who chooses ring-message pairs for which he requests signatures, corrupts honest users, and obtains their signing keys can not produce forgeries for new ring-message pairs.
Lattice-based ring signature schemes offer lower computational overhead and security from quantum attacks.
In this paper, we offer a lattice-based scheme.
We begin by showing that the existing ring signature schemes are not sufficiently secure, because existential unforgeability still permits a signer to potentially produce a new signature on previously signed messages.
Furthermore, we show that existing ring signature schemes from lattices are not even existentially unforgeable with respect to insider corruption.
We then improve previous schemes by applying, for the first time, the concept of strong unforgeability with respect to insider corruption to a ring signature scheme in lattices.
This offers more security than any previous ring signature scheme: adversaries cannot produce new signatures for any ring-message pair, including previously signed ring-message pairs.
American Psychological Association (APA)
Noh, Geontae& Chun, Ji Young& Jeong, Ik Rae. 2014. Strongly Unforgeable Ring Signature Scheme from Lattices in the Standard Model. Journal of Applied Mathematics،Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-466813
Modern Language Association (MLA)
Noh, Geontae…[et al.]. Strongly Unforgeable Ring Signature Scheme from Lattices in the Standard Model. Journal of Applied Mathematics No. 2014 (2014), pp.1-12.
https://search.emarefa.net/detail/BIM-466813
American Medical Association (AMA)
Noh, Geontae& Chun, Ji Young& Jeong, Ik Rae. Strongly Unforgeable Ring Signature Scheme from Lattices in the Standard Model. Journal of Applied Mathematics. 2014. Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-466813
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-466813