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A New Variant of the Cramer-Shoup KEM Secure against Chosen Ciphertext Attack
Conference proceeding   Peer reviewed

A New Variant of the Cramer-Shoup KEM Secure against Chosen Ciphertext Attack

Joonsang Baek, Willy Susilo, Joseph K. Liu and Jianying Zhou
APPLIED CRYPTOGRAPHY AND NETWORK SECURITY, Vol.5536, pp.143-155
Lecture Notes in Computer Science
01/01/2009
DOI: https://doi.org/10.1007/978-3-642-01957-9_9

Abstract

Computer Science Computer Science, Theory & Methods Science & Technology Technology
We propose a new variant of the Cramer-Shoup KEM (key encapsulation mechanism). The proposed variant is more efficient than the original Cramer-Shoup KEM scheme in terms of public key size and encapsulation cost, but is proven to be (still) secure against chosen ciphertext attack in the standard model, relative to the Decisional Diffie-Hellman problem.

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