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Access control on the Web using proof-carrying authorization

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4 Author(s)
Bauer, L. ; Dept. of Comput. Sci., Princeton Univ., NJ, USA ; Schneider, M.A. ; Felten, E.W. ; Appel, A.W.

We describe a system for access control on the Web that is based on the ideas of proof-carrying authorization (PCA). Our system is implemented as modules that extend a standard Web server and Web browser to use PCA to control access to Web pages. The Web browser generates proofs mechanically by iteratively fetching proof components until a proof can be constructed. We provide for iterative authorization, by which a server can require a browser to prove a series of challenges. Our implementation includes a series of optimizations, such as speculative proving, and modularizing and caching proofs, and demonstrates that the goals of generality, flexibility, and interoperability are compatible with reasonable performance.

Published in:

DARPA Information Survivability Conference and Exposition, 2003. Proceedings  (Volume:2 )

Date of Conference:

22-24 April 2003