Privacy Enhancing Technologies: 7th International Symposium, PET 2007 Ottawa, Canada, June 20-22, 2007 Revised Selected Papers (Lecture Notes in Computer Science / Security and Cryptology)

Privacy Enhancing Technologies: 7th International Symposium, PET 2007 Ottawa, Canada, June 20-22, 2007 Revised Selected Papers (Lecture Notes in Computer Science / Security and Cryptology)

Language: English

Pages: 278

ISBN: 3540755500

Format: PDF / Kindle (mobi) / ePub

This book constitutes the thoroughly refereed post-proceedings of the 7th International Symposium on Privacy Enhancing Technologies, PET 2007, held in conjunction with WOTE 2007, the IAVoSS Workshop on Trustworthy Elections. The papers cover design and realization of privacy services for the internet and other communication networks and present novel research on all theoretical and practical aspects of privacy technologies, as well as experimental studies of fielded systems.

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time-stamp of manufacture. T0 need not be tag-unique; an entire batch of tags can be initialized with the same value. The bit-size of T0 depends on the desired granularity of time and the number of times a tag can be authenticated. Tmax can be viewed as the highest possible time-stamp. Like T0 , Tmax does not need to be unique, e.g., a batch of tags can share this value. Each tag is further equipped with a sufficiently strong, uniquely seeded pseudo-random number generator (PRNG). In practice, it

additional information, all B4 = 15 partitions of A constitute valid ways to link these calls. Since without any additional information all these partitions are equally likely, the unlinkability of the calls is, in this case, log2 (15) 3.9 bits, and the degree of unlinkability is log2 (15)/ log2 (15) = 1. The clerk, however, has some additional information: he realised that the calls λ1 and λ2 were made by men, and that the calls λ3 and λ4 by women (however, the clerk does not know whether or not

collocated with the IAVoSS Workshop on Trustworthy Elections (WOTE 2007), with a full day of plenary sessions. All participants were free to attend sessions from both events. The program chairs would like to thank, first of all, the authors, speakers, and panelists for their contribution to the content of the workshop. We would also like to thank the program committee for their hard work of a month of reviews and two more weeks of intense discussions, helping to ensure a program of high scientific

blacklisted, the user does not present the nymble ticket, and disconnects. 4 The Nymble Authentication Module In this section we present the Nymble Authentication Module (Nymble-Auth), our cryptographic construction that centers on the services provided by the Nymble Manager (NM). Nymble-Auth allows users to authenticate to servers in a manner that both preserves the privacy of honest users and protects servers from misbehaving users. Nymble-Auth thus serves as the fundamental building block in

Longer Considered Harmful. In: Proceedings of the OSDI 2004, San Francisco, CA (December 2004) 166 S. Guha and P. Francis 22. Ford, B., Strauss, J., Lesniewski-Laas, C., Rhea, S., Kaashoek, F., Morris, R.: Persistent Personal Names for Globally Connected Mobile Devices. In: Proceedings of the OSDI 2006, Seattle, WA (November 2004) 23. Perkowitz, M., Doorenbos, R.B., Etzioni, O., Weld, D.S.: Learning to Understand Information on the Internet: An Example-Based Approach. Journal of Intelligent

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