On The Improvement of the Tri-Way Pixel Value Differencing Steganography Algorithm

Abstract

Abstract-Authenticated key agreement protocols play a significant role in securing communications over public network channels (Internet). This paper proposes a new key agreement protocol based on factorization problem over nonabelian groups. Then it presents two different ways to provide mutual authentication for the proposed protocol; this paper presents a new authenticated key agreement protocol using fixed shared password and a new authenticated key agreement protocol using a digital signature. It also provides security analysis for the proposed two authenticated key agreement protocols.