Fixing the integrated diffie-hellman-DSA key exchange protocol

A Better Improvement on the Integrated Diffie-Hellman-DSA Key Agreement Protocol

Harn et al. proposed a series of Diffie-Hellman key exchange protocols which are integrated into Digital Signature Algorithm in 2004. Recently, Phan pointed out that Harn et al.’s protocols cannot provide forward secrecy and key freshness, which are two standard security attributes that key exchange protocols should have. Phan also gave his improvement. In this paper we present a better improve...

Diffie-Hellman Key Exchange Protocol, Its Generalization and Nilpotent Groups

Author: Ayan Mahalanobis Title: Diffie-Hellman Key Exchange Protocol, its Generalization and Nilpotent Groups Dissertation Advisor: Dr. Spyros Magliveras Degree: Doctor of Philosophy Year: 2005 This dissertation has two chapters. In the first chapter we talk about the discrete logarithm problem, more specifically we concentrate on the Diffie-Hellman key exchange protocol. We survey the current ...

Diffie-Hellman key exchange protocol and non-abelian nilpotent groups

In this paper we study a key exchange protocol similar to DiffieHellman key exchange protocol using abelian subgroups of the automorphism group of a non-abelian nilpotent group. We also generalize group no.92 of HallSenior table [15], for arbitrary prime p and show that for those groups, the group of central automorphisms commute. We use these for the key exchange we are studying. MSC: 94A62, 2...

Diffie-Hellman type key exchange protocols based on isogenies

‎In this paper‎, ‎we propose some Diffie-Hellman type key exchange protocols using isogenies of elliptic curves‎. ‎The first method which uses the endomorphism ring of an ordinary elliptic curve $ E $‎, ‎is a straightforward generalization of elliptic curve Diffie-Hellman key exchange‎. ‎The method uses commutativity of the endomorphism ring $ End(E) $‎. ‎Then using dual isogenies‎, ‎we propose...

A Diffie-Hellman Key Exchange Protocol Without Random Oracles