Trust negotiation, a new authentication paradigm, enables strangers on the Internet to establish trust through the gradual disclosure of digital credentials and access control policies. Previous research in trust negotiation does not address issues in preserving trust across multiple sessions. This thesis discusses issues in preserving trust between parties who were previously considered strangers. It also describes the design and implementation of trust preservation in TrustBuilder, a prototype trust negotiation system. Preserving trust information can reduce the frequency and cost of renegotiation. A scenario is presented that demonstrates that a server supporting trust preservation can recoup the cost of the trust preservation facility when approximately 25% of its requests are from repeat customers. The throughput and response time improve up to approximately 33% as the percentage of repeat customers grows to 100%.
College and Department
Physical and Mathematical Sciences; Computer Science
BYU ScholarsArchive Citation
Chan, Fuk-Wing Thomas, "Preserving Trust Across Multiple Sessions in Open Systems" (2004). All Theses and Dissertations. 137.
Trust negotiation, single-sign-on, authentication, authorization, security