2026-09-20T12:21:22Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/81971 2023-07-11 col_2142_5131 col_2142_10761 com_2142_5130 com_2142_10755 com_2142_234

Campbell, Roy H. Qian, Tin 2015-09-25T20:21:14Z 2015-09-25T20:21:14Z 10000-01-01 2000 2000 Traditionally, a system can only be trusted after it has been formally proven trustworthy. However, due to the inherent complexity of distributed systems and the limitation of formal methods, trust based on factors other than formal logic verification has to be included in designing and developing security services for these systems. Motivated by several on-going research efforts in studying the distributed trust management problem, this thesis proposes a new simple certification scheme that supports distributed name-spaces, dynamic trust management and the specification of application specific security attributes. An object oriented certificate framework has been designed and developed to implement this new scheme. This framework also incorporates an innovative usage of mobile code to specify fine grained delegation conditions flexibly and efficiently. Experiments with a prototype implementation show that the increased flexibility and expressibility adds little performance overhead to the certification system. Made available in DSpace on 2015-09-25T20:21:14Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 9955658.pdf: 5434745 bytes, checksum: 656901cb22989532d36c99f47a6e44ce (MD5) Previous issue date: 2000 Embargo set by: Seth Robbins for item 83252 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 96 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2000. http://hdl.handle.net/2142/81971 (MiAaPQ)AAI9955658 eng Computer Science Dynamic Authorization Support in Large Distributed Systems text Computer Science Computer Science University of Illinois at Urbana-Champaign Dissertation Ph.D.