The Untrusted Computer Problem and Camera-Based Authentication

  • Authors:
  • Dwaine E. Clarke;Blaise Gassend;Thomas Kotwal;Matt Burnside;Marten van Dijk;Srinivas Devadas;Ronald L. Rivest

  • Affiliations:
  • -;-;-;-;-;-;-

  • Venue:
  • Pervasive '02 Proceedings of the First International Conference on Pervasive Computing
  • Year:
  • 2002

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Abstract

The use of computers in public places is increasingly common in everyday life. In using one of these computers, a user is trusting it to correctly carry out her orders. For many transactions, particularly banking operations, blind trust in a public terminal will not satisfy most users. In this paper the aim is therefore to provide the user with authenticated communication between herself and a remote trusted computer, via the untrusted computer.After defining the authentication problem that is to be solved, this paper reduces it to a simpler problem. Solutions to the simpler problem are explored in which the user carries a trusted device with her. Finally, a description is given of two camera-based devices that are being developed.