2026-09-20T16:23:47Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/81703 2023-07-11 col_2142_5131 col_2142_10761 com_2142_5130 com_2142_10755 com_2142_234

Campbell, Roy H. Kapadia, Apu Chandrasen 2015-09-25T20:20:04Z 2015-09-25T20:20:04Z 10000-01-01 2005 2005 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. Made available in DSpace on 2015-09-25T20:20:04Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3199337.pdf: 3973552 bytes, checksum: 4ba0e643455d556987cce545056ff93f (MD5) Previous issue date: 2005 Embargo set by: Seth Robbins for item 82984 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 123 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2005. http://hdl.handle.net/2142/81703 (MiAaPQ)AAI3199337 eng Computer Science Models for Privacy in Ubiquitous Computing Environments text Computer Science Computer Science University of Illinois at Urbana-Champaign Dissertation Ph.D.