Searching for just a few words should be enough to get started. If you need to make more complex queries, use the tips below to guide you.
Issue title: 20th IEEE Computer Security Foundations Symposium (CSF)
Guest editors: Andrei Sabelfeld
Article type: Research Article
Authors: Chatzikokolakis, Konstantinosa | Palamidessi, Catusciaa | Panangaden, Prakashb
Affiliations: [a] INRIA and LIX, École Polytechnique Palaiseau, France. E-mails: kostas@lix.polytechnique.fr, catuscia@lix.polytechnique.fr | [b] McGill University Montreal, Quebec, Canada. E-mail: prakash@cs.mcgill.ca
Abstract: Randomized protocols for hiding private information can be regarded as noisy channels in the information-theoretic sense, and the inference of the concealed information can be regarded as a hypothesis-testing problem. We consider the Bayesian approach to the problem, and investigate the probability of error associated to the MAP (maximum a posteriori probability) inference rule. Our main result is a constructive characterization of a convex base of the probability of error, which allows us to compute its maximum value (over all possible input distributions), and to identify upper bounds for it in terms of simple functions. As a side result, we are able to improve the Hellman–Raviv and the Santhi–Vardy bounds expressed in terms of conditional entropy. We then discuss an application of our methodology to the Crowds protocol, and in particular we show how to compute the bounds on the probability that an adversary break anonymity.
Keywords: Hypothesis testing, probability of error, information theory, anonymity, privacy
DOI: 10.3233/JCS-2008-0333
Journal: Journal of Computer Security, vol. 16, no. 5, pp. 531-571, 2008
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
USA
Tel: +1 703 830 6300
Fax: +1 703 830 2300
sales@iospress.com
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
IOS Press
Nieuwe Hemweg 6B
1013 BG Amsterdam
The Netherlands
Tel: +31 20 688 3355
Fax: +31 20 687 0091
info@iospress.nl
For editorial issues, permissions, book requests, submissions and proceedings, contact the Amsterdam office info@iospress.nl
Inspirees International (China Office)
Ciyunsi Beili 207(CapitaLand), Bld 1, 7-901
100025, Beijing
China
Free service line: 400 661 8717
Fax: +86 10 8446 7947
china@iospress.cn
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
如果您在出版方面需要帮助或有任何建, 件至: editorial@iospress.nl