A Study on Authentication System Using QR Code for Mobile Cloud Computing Environment

In cloud computing environment, users use authentication system for being provided the whole or the part of needed resources directly from servers, and for authentication, thousands of suatus bit are necessary. The problems is that thousands of status bit information should be searched under the centural authority, and the searching process causes high network bandwidth, delay, and network congestion. This paper suggests authentication system appropriate for mobile cloud computing environment using QR code, a typical 2-dimensional code, and QR code is a technology suitable to display information needed for user authentication through its strengths such as high data integration, compressibility and error correction capability. Then, it suggests a technology to authorize users with totally new information vs information through new type of data set having 3 kinds of QR code by converting user information to different 3 versions of QR code and by storing each QR code in distributed server system of cloud computing environment in a circulation-loop way.