Cryptology ePrint Archive: Report 2005/058

Generic Constructions of Identity-Based and Certificateless KEMs

K. Bentahar and P. Farshim and J. Malone-Lee and N.P. Smart

Abstract: We extend the concept of key encapsulation mechanisms to the primitives of ID-based and certificateless encryption. We show that the natural combination of ID-KEMs or CL-KEMs with data encapsulation mechanisms results in encryption schemes which are secure in a strong sense. In addition, we give generic constructions of ID-KEMs and CL-KEMs, as well as specific instantiations, which are provably secure.

Category / Keywords: public-key cryptography / ID-based and certificateless encryption, KEM-DEM constructions

Date: received 25 Feb 2005

Contact author: nigel at cs bris ac uk

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Version: 20050225:155508 (All versions of this report)

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