A Chaotic Map-Based Authentication and Key Agreement Scheme with User Anonymity for Cloud Computing

摘要

Cloud computing is a hot issue mentioned more and more nowadays. Vast information for every domain are stored in cloud servers. Security issue is accompanied with the fast development of cloud application. On the other hand, many authentication schemes with different methods have been presented over the last decades. To guarantee the valid access to remote server, smart cards are used on the client side. Moreover, user anonymity becomes a hot issue in such schemes. We present a chaotic-map based mutual authentication scheme for cloud computing. After our concrete analysis, the new scheme not only makes user anonymous but also performs well in basic aspects compared with recent schemes. The new scheme is practical and efficient via our comparison and it overcomes various attacks and meets security requirements in public opinion.