Analysis and Improvement of User Authentication Framework for Cloud Computing

Abstract

Cloud Computing, as an emerging, virtual, large-scale distributed computing model, has gained increasing attention these years. Meanwhile it also faces many secure challenges, one of which is authentication. Amlan Jyoti Choudhury et al proposed a user authentication framework to ensure user legitimacy before entering into the cloud. However, the scheme is found to suffer from some attacks through our analysis. In this paper, we firstly analyze few attacks and the make an improvement on the user authentication framework. Our new protocol ensures that only legitimate users can access the cloud service based on smartcard. Security analysis shows our proposed scheme is secure under standard cryptographic.