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Certification of Public Keys within an Identity Based System

Chen, Liqun; Harrison, Keith; Moss, Andrew; Soldera, David; Smart, Nigel

HPL-2003-18

Keyword(s): identifier based cryptography; public key certification; hierarchies of linked trust authorities; delegation of rights

Abstract: We investigate a number of issues related to the use of multiple trust authorities in the type of identifier based cryptography enabled by the Weil and Tate pairings. An example of such a system is the Boneh and Franklin encryption scheme. We examine how to create an efficient hierarchy of multiple trust authorities and then go on to examine some application areas of pairing based cryptography. Notes: Andrew Moss and Nigel Smart, Computer Science Dept., Woodland Road, University of Bristol, Bristol, BS8 1UB U.K.

12 Pages

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