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Automated trust negotiation

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3 Author(s)
Winsborough, W.H. ; Transarc Lab., IBM Corp., USA ; Seamons, K.E. ; Jones, V.E.

Distributed software subjects face the problem of determining one another's trustworthiness. The problem considered is managing the exchange of credentials between strangers for the purpose of property-based authentication and authorization when credentials are sensitive. An architecture for trust negotiation between client and server is presented. The notion of a trust negotiation strategy is introduced and examined with respect to an abstract model of trust negotiation. Two strategies with very different properties are defined and analyzed. A language of credential expressions is presented, with two example negotiations illustrating the two negotiation strategies. Ongoing work on policies governing credential disclosure and trust negotiation is summarized

Published in:

DARPA Information Survivability Conference and Exposition, 2000. DISCEX '00. Proceedings  (Volume:1 )

Date of Conference:

2000