Cryptology ePrint Archive: Report 2002/174
A Designer's Guide to KEMs
Alexander W. Dent
Abstract: A generic or KEM-DEM hybrid construction is a formal method of
combining a asymmetric and symmetric encryption techniques to give
an efficient, provably secure public-key encryption scheme. This
method combines an asymmetric KEM with a symmetric DEM, and each
of these components must satisfy their own security conditions. In
this paper we describe generic constructions for provably secure
KEMs based on lower level primitives such as one-way trapdoor
functions and weak key-agreement protocols.
Category / Keywords: public-key cryptography / "Key encapsulation mechanisms" KEMs "Hybrid encryption" "Provable security"
Date: received 13 Nov 2002, last revised 31 Oct 2005
Contact author: alex at fermat ma rhul ac uk
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Note: Mild technical errors have been corrected from the original version.
Version: 20051031:161821 (All versions of this report)
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