Privacy Enhancing Proxies in a Federation: Agent Approach and Cascade Approach (Preprint)

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概要

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• In the current network environment, access federations are proving very effective for building trustworthy and efficient service environment. However, operating federations causes some delicate problems regarding trust and security. Among the problems, privacy occupies an essential role in trust building for individual users. Conventionally, privacy aware technologies are concerned with providing anonymity. However, as privacy is understood as the right to control one's own information, and as better services are provided if some privacy information is provided, appropriate hiding and disclosing one's own information is considered more significant. Today, there are considered a wide variety of privacy usages for business, and because such scenarios have their own problems which must be separately solved, uniform "privacy aware technologies" are hard to conceive. They tend to be a collection of ad hoc technologies. In this paper, we consider a scenario of newspaper subscription with student discount. The proof that a subscriber is a student is sent to a newspaper provider from a university identity provider. We consider this scenario in order to extend the menu of services available in a university. Specifically, we explore technologies of proxies that include provision of anonymity and building of trust in a federation. We propose two solutions: SII-like agents, and cascading proxies to envision the privacy protection in this scenario. Their Web profiles are defined and implemented. Moreover, it is proved that both approaches effectively work to protect privacy.------------------------------This is a preprint of an article intended for publication Journal ofInformation Processing(JIP). This preprint should not be cited. Thisarticle should be cited as: Journal of Information Processing Vol.22(2014) No.3 (online)------------------------------

• 2014-06-15

著者

• Hiroyuki Sato

  The University of Tokyo

• Motonori Nakamura

  National Institute Of Informatics

• Yasuo Okabe

  Kyoto University

• Takeshi Nishimura

  National Institute of Informatics (NII)

• Kazutsuna Yamaji

  National Institute of Informatics (NII)

• Kazutsuna Yamaji

  National Insititute of Informatics

• Motonori Nakamura

  National Institute of Informatics (NII)

• Motonori Nakamura

  National Insititute of Informatics

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