Password authenticated key agreement protocol for multi-servers architecture

This paper proposes an efficient password authenticated key agreement protocol for multi-servers architecture. The authenticated key agreement protocol is a good solution to provide authentication and confidentiality. The identity authentication and confidentiality are two important primary security services for the open network environment. The proposed scheme allows user to access multi-server securely by keeping one weak password and a smart card only. The client user and server will authenticate each other in the proposed scheme. They will agree a secret common session key for each request in the ending of the proposed scheme. Furthermore, the proposed scheme is based on straight line of geometry and symmetric cryptosystem. It does not use the overload cryptography operations, it is more efficient than the previous results.