Improved certificate-based encryption in the standard model

Authors:
David Galindo;Paz Morillo;Carla Rífols
Affiliations:
Computer Science Department, University of Malaga, 29071, Malaga, Spain;Universitat Politècnica de Catalunya, C/Jordi Girona, 1-3 08034 Barcelona, Spain;Universitat Politècnica de Catalunya, C/Jordi Girona, 1-3 08034 Barcelona, Spain
Venue:
Journal of Systems and Software
Year:
2008

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Abstract

Certificate-based encryption has been recently proposed as a means to simplify the certificate management inherent to traditional public key encryption. In this paper, we present an efficient certificate-based encryption scheme which is fully secure in the standard model. Our construction is more efficient (in terms of computational cost and ciphertext size) than any of the previous constructions known without random oracles.