Nicholas Weaver, Mark Allman. On Constructing a Trusted Path to the User. Technical Report 09-009, International Computer Science Institute, December 2009.
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Abstract:

One of the fundamental activities within a network is authentication. Current schemes fail for a number of reasons, but crucially they are almost all vulnerable to end-host compromise and an inability to authenticate transactions. In this preliminary paper we argue that a generic trusted path to the user is an essential building block for the future Internet architecture. We sketch the design of a ``key fob'' that will readily fit on peoples' physical key rings and provide such a trusted path from Internet services to users regardless of the state of the components of that path.

BibTeX:

@techreport{WA09,
    author      = "Nicholas Weaver and Mark Allman",
    title       = "{On Constructing a Trusted Path to the User}",
    institution = "International Computer Science Institute",
    year        = 2009,
    number      = "09-009",
    month       = dec,
}