Three Systems for Threshold Generation of Authenticators

Authors:
R. Safavi-Naini
Affiliations:
Department of Computer Science, University of Wollongong, Northfields Ave., Wollongong 2522, Australia
Venue:
Designs, Codes and Cryptography
Year:
1998

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Abstract

An authentication system with shared generation of authenticatorsis a system in which construction of an authentic codeword requirescollaboration of an authorised group of transmitters. We proposethree systems for threshold generation of authenticators thatprovide unconditional security and in two cases protection extendsover multiple message transmissions. We describe the constructionsand prove their security properties.