[Resource Topic] 2007/026: Cryptanalysis and Improvement of an Elliptic Curve Diffie-Hellman Key Agreement Protocol

Welcome to the resource topic for 2007/026

Title:
Cryptanalysis and Improvement of an Elliptic Curve Diffie-Hellman Key Agreement Protocol

Authors: Shengbao Wang, Zhenfu Cao, Maurizio Adriano Strangio, Lihua Wang

Abstract:

In SAC’05, Strangio proposed protocol ECKE-1 as an efficient elliptic curve Diffie-Hellman two-party key agreement protocol using public key authentication. In this letter, we show that despite the author’s claims protocol ECKE-1 is vulnerable to key-compromise impersonation attacks. We also present an improved protocol — ECKE-1N, which can withstand such attacks. The improved protocol’s performance is comparable to the well-known MQV protocol and maintains the same remarkable list of security properties.

ePrint: https://eprint.iacr.org/2007/026

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