چکیده (انگلیسی):

Nowadays, Web services have used drastically for various online applications like banking, e-bill
processing. All online services need robust security architecture for handling sensitive data like user name,
password. But, The Web service has security problems that need to be solved. The existing security scheme
lacks to defend the attacks from replay and password guessing attacks. In this study we proposed a new
scheme for a secure authentication procedure for the web service to enhance the security of the existing
schemes. The proposed system has been implemented with the Dynamic Nonce for validating the user with
username and password which is embedded with WS-Security. The Dynamic Nonce has been implemented
with the user’s mouse movement by satisfying the condition given in the proposed scheme. It has changed
for every session because it is generated from user’s mouse movements. The system has analyzed with
possible attacks. The proposed dynamic nonce based authentication scheme is suitable for lower.