Models for Privacy in Ubiquitous Computing Environments
Kapadia, Apu Chandrasen
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Permalink
https://hdl.handle.net/2142/81703
Description
Title
Models for Privacy in Ubiquitous Computing Environments
Author(s)
Kapadia, Apu Chandrasen
Issue Date
2005
Doctoral Committee Chair(s)
Campbell, Roy H.
Department of Study
Computer Science
Discipline
Computer Science
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Computer Science
Language
eng
Abstract
For secure and private communication, we present a model for trustworthy routing, with a policy specification language that is computationally efficient to enforce. We show how quantitative trust models can be used to find trustworthy paths of communication and explore various semantic models of trust. For the unlinkability of a user's accesses to services in a ubiquitous computing environment, we present a model based on access control and decentralized enforcement of policy constraints. We prove that our solution is secure, and show how security can be maintained by trading off precision for evolving protection state. Lastly, we present a model called Know for providing feedback regarding access control decisions to users. This model aims to make ubiquitous computing environments more usable and secure, while honoring the privacy of other users in the system. Administrators can specify meta-policies to tailor feedback to individual users based on perceived threat to the policy's contents.
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