Roaming User Authentication Scheme in Mobile Network

• Main Authors: Yi-Fu Chen, 陳義夫
• Other Authors: Ren-Junn Hwang
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/49791928465159698545

碩士 === 淡江大學 === 資訊工程學系資訊網路與通訊碩士班 === 99 === This research proposes an authentication mechanism for roaming users of mobile networks. Thanks to the rapid development of Internet and wireless communications, users can access to wireless Internet services through mobile devices. Since humans are mobile by nature, they may access Internet with their wireless or mobile devices via a foreign agent. This phenomenon is called roaming. Allowing foreign agents to identify legal users among other cooperating networks is thus an essential issue to keep mobile network security with effective management reachable. This research adopts smartcards due to their low computing costs and easy portability. In combination with passwords, a mechanism suitable for user authentication in foreign agents is established so that users may log into foreign agents anonymously. The same user may anonymously log in numerous times, and other parties are blocked from spying the user and thereby individual privacy is ensured. In addition, the method proposed in this research meets security requirements of mobile networks and provides functions such as highly efficient user password authentication and offline password changing. These features block possible security attacks that may occur in mobile networks. In comparison with methods presented by other researchers, the computational performance of the proposed method is superior.