Title :
An improved authentication and key agreement protocol preserving user´s privacy using smart cards
Author :
Jia, Zhongtian ; Zhang, Yuan
Author_Institution :
Sch. of Inf. Sci. & Eng., Univ. of Jinan, Jinan
Abstract :
Recently, a privacy enhanced authentication and key agreement protocol was proposed using elliptic curve cryptograph technology. The scheme is insecure, however, against replay attacks within valid period of certificate and loses users´ privacy that should be protected. In this paper we propose an improved authentication and key agreement protocol by employing smart card and random number technology. Replay attacks are thus blocked without the need of time synchronization between computers. Moreover, we develop a secure mechanism to protect users´ identity privacy and a convenient password change method without the participation of the server. Our protocol is more secure compared with others at similar computation cost in the authentication period.
Keywords :
authorisation; data privacy; protocols; public key cryptography; random number generation; smart cards; elliptic curve cryptograph technology; improved authentication protocol; key agreement protocol; random number technology; secure mechanism; smart cards; user privacy preservation; Access protocols; Authentication; Computer networks; Cryptographic protocols; Elliptic curve cryptography; Information science; Network servers; Privacy; Protection; Smart cards;
Conference_Titel :
Service Operations and Logistics, and Informatics, 2008. IEEE/SOLI 2008. IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2012-4
Electronic_ISBN :
978-1-4244-2013-1
DOI :
10.1109/SOLI.2008.4686463