Diffie-Hellman Based Smart-Card Multi-server Authentication Scheme

A secure smart-card multi-server authentication scheme has been proposed using Diffie-Hellman, Hash-Function and XOR. The scheme made no use of verification table, or encryption techniques, or timestamps to generate a session key to provide secure communication between user and server and resists all possible security attacks, such as Man-in-the-Middle attack, Impersonation attack, Insider attack and many more. The scheme proved to be better when compared to Xie and Chen scheme in terms of security and performance.