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Practical threshold password-authenticated secret sharing protocol
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Yi, Xun, Hao, Feng, Chen, Liqun and Liu, Joseph K. (2016) Practical threshold password-authenticated secret sharing protocol. In: 20th European Symposium on Research in Computer Security , Vienna, Austria, 21-25 Sep 2015. Published in: Computer Security - ESORICS 2015, 9326 pp. 347-365. ISBN 9783319241739. doi:10.1007/978-3-319-24174-6_18 ISSN 0302-9743.
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Official URL: http://dx.doi.org/10.1007/978-3-319-24174-6_18
Abstract
Threshold password-authenticated secret sharing (TPASS) protocols allow a client to secret-share a secret s among n servers and protect it with a password pw, so that the client can later recover s from any subset of t of the servers using the password pw, but so that no coalition smaller than t learns anything about s or can mount an offline dictionary attack on the password pw. Some TPASS protocols have appeared in the literature recently. The protocol by Bagherzandi et al. (CCS 2011) leaks the password if a client mistakenly executes the protocol with malicious servers. The first t-out-of-n TPASS protocol for any n>tthat does not suffer from this shortcoming was given by Camenisch et al. (CRYPTO 2014). This protocol, proved to be secure in the UC framework, requires the client to involve in many communication rounds so that it becomes impractical for the client. In this paper, we present a practical TPASS protocol which is in particular efficient for the client, who only needs to send a request and receive a response. In addition, we have provided a rigorous proof of security for our protocol in the standard model.
Item Type: | Conference Item (Paper) | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Computer Science | ||||
Journal or Publication Title: | Computer Security - ESORICS 2015 | ||||
Publisher: | Springer | ||||
ISBN: | 9783319241739 | ||||
ISSN: | 0302-9743 | ||||
Book Title: | Computer Security -- ESORICS 2015 | ||||
Official Date: | 13 January 2016 | ||||
Dates: |
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Volume: | 9326 | ||||
Page Range: | pp. 347-365 | ||||
DOI: | 10.1007/978-3-319-24174-6_18 | ||||
Status: | Not Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Open Access (Creative Commons) | ||||
Conference Paper Type: | Paper | ||||
Title of Event: | 20th European Symposium on Research in Computer Security | ||||
Type of Event: | Conference | ||||
Location of Event: | Vienna, Austria | ||||
Date(s) of Event: | 21-25 Sep 2015 |
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