Author(s)

J.-J. Climent, J.A. L´opez-Ramos, P. R. Navarro & L. Tortosa

Abstract

Protocols for authenticated key exchange allow parties within an insecure network to establish a common session key which can then be used to secure their future communication. In this paper we introduce a protocol for distributed key agreement over a noncommutative ring with a large number of noninvertible elements. This protocol uses polynomials with coefficients in the center of the ring. We also present the necessary steps for recalculating the shared secret key when a new user joins the system, or when a user leaves the system. Keywords: secure communications, key exchange, noncommutative ring, multicast protocol.

Keywords

Keywords: secure communications, key exchange, noncommutative ring, multicast protocol.