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Fourth IEEE Workshop on Mobile Computing Systems and Applications   p. 14
Context Authentication Using Constrained Channels
Tim Kindberg, Hewlett-Packard Laboratories
Kan Zhang, Hewlett-Packard Laboratories
Narendar Shankar, University Of Maryland at College Park

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DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/MCSA.2002.1017481
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Abstract
This paper presents practical protocols for authenticating the parameters that characterise a principal's context. Context features in what are known as mobile, ubiquitous, pervasive and nomadic computing systems. Location, in particular, is a highly significant contextual parameter. We present a model of context authentication based on the characteristics of communication channels. Then we present protocols for location authentication that are based on physical channel characteristics, including a protocol that we have implemented over HTTP for use from any Web browser. We conclude with a summary and discussion of the work.
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Citation:  Tim Kindberg, Kan Zhang, Narendar Shankar, "Context Authentication Using Constrained Channels," wmcsa, p. 14,  Fourth IEEE Workshop on Mobile Computing Systems and Applications,  2002