Attack on ``Strong Diffie-Hellman-DSA KE" and Improvement
Demba Sow, Mamadou Ghouraissiou Camara, Djiby Sow · Journal of Mathematics Research · 2014
In this paper, we do a cryptanalyse of the so called "Strong Diffie-Hellman-DSA Key Exchange (briefly: SDH-DSA-KE)" and after we propose "Strong Diffie-Hellman-Exponential-Schnnor Key Exchange (briefly: SDH-XS-KE)" which is an improvement for efficiency and security.SDH-XS-KE protocol is secure against Session State Reveal (SSR) attacks, Key independency attacks, Unknown-key share (UKS) attacks and Key-Compromise Impersonation (KCI) attacks.Furthermore, SDH-XS-KE has Perfect Forward Secrecy (PFS) property and a key confirmation step.The new proposition is not vulnerable to Disclosure to ephemeral or long-term Diffie-Hellman exponents.We design our protocol in finite groups therefore this protocol can be implemented in elliptic curves.