End user authentication (EUA)

Authentication is one among a set of services that constitute a security sub-system in a modern computing or communications infrastructure. End User Authentication flexibility model would proposed in this paper allow the user to have multiple authentication mechanisms with varying levels of guarantee, and for suppliers to request and rely on mechanisms appropriate to the service requested. Authentications to end-user in a simple three level ticket request model algorithms solution on open distributed environment. This paper describes the ticket used by clients, servers, and Kerberos to achieve authentication toward prevention of unauthorized access to in sourced data on applications level. However we explore an approach to end user authentication that generalizes the notion of a textual password that, in many cases, improves the security. Our approach is based on the use of Kerberos authentication technique and Diffie-Hellman Key exchange.