Models for Privacy in Ubiquitous Computing Environments

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.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Computer Science

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Kapadia, Apu Chandrasen

Contributors dc:contributor

• Campbell, Roy H.

• Computer Science

Language dc:language

eng

Identifier

(MiAaPQ)AAI3199337

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/81703