Welcome to the resource topic for 2007/178
Title:
Utility Sampling for Trust Metrics in PKI
Authors: Dakshi Agrawal, Charanjit Jutla
Abstract:We propose a new trust metric for a network of public key certificates, e.g. as in PKI, which allows a user to buy insurance at a fair price on the possibility of failure of the certifications provided while transacting with an arbitrary party in the network. Our metric builds on a metric and model of insurance provided by Reiter and Stubblebine~\cite{RS}, while addressing various limitations and drawbacks of the latter. It conserves all the beneficial properties of the latter over other schemes, including protecting the user from unintentional or malicious dependencies in the network of certifications. Our metric is built on top of a simple and intuitive model of trust and risk based on ``utility sampling’', which maybe of interest for non-monetary applications as well.
ePrint: https://eprint.iacr.org/2007/178
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