title: A Secure Dynamic Identity and Chaotic Maps Based User Authentication and Key Agreement Scheme for e-Healthcare Systems.
abstract: Secure user authentication schemes in many e-Healthcare applications try to prevent unauthorized users from intruding the e-Healthcare systems and a remote user and a medical server can establish session keys for securing the subsequent communications. However, many schemes does not mask the users' identity information while constructing a login session between two or more parties, even though personal privacy of users is a significant topic for e-Healthcare systems. In order to preserve personal privacy of users, dynamic identity based authentication schemes are hiding user's real identity during the process of network communications and only the medical server knows login user's identity. In addition, most of the existing dynamic identity based authentication schemes ignore the inputs verification during login condition and this flaw may subject to inefficiency in the case of incorrect inputs in the login phase. Regarding the use of secure authentication mechanisms for e-Healthcare systems, this paper presents a new dynamic identity and chaotic maps based authentication scheme and a secure data protection approach is employed in every session to prevent illegal intrusions. The proposed scheme can not only quickly detect incorrect inputs during the phases of login and password change but also can invalidate the future use of a lost/stolen smart card. Compared the functionality and efficiency with other authentication schemes recently, the proposed scheme satisfies desirable security attributes and maintains acceptable efficiency in terms of the computational overheads for e-Healthcare systems.
authors.affiliation: Department of Information Management, Tainan University of Technology, Tainan, 71002, Taiwan, Republic of China.
authors.forename: Chun-Ta
authors.initials: CT
authors.lastname: Li
authors.affiliation: Department of Library and Information Science, Fu Jen Catholic University, New Taipei, 24205, Taiwan, Republic of China. cclee@mail.fju.edu.tw.|Department of Photo and Communication Engineering, Asia University, Taichung, 41354, Taiwan, Republic of China. cclee@mail.fju.edu.tw.
authors.forename: Cheng-Chi
authors.initials: CC
authors.lastname: Lee
authors.affiliation: Department of Computer Science, National Pingtung University, Pingtung, 90003, Taiwan, Republic of China.
authors.forename: Chi-Yao
authors.initials: CY
authors.lastname: Weng
authors.affiliation: Department of Information Management, Tainan University of Technology, Tainan, 71002, Taiwan, Republic of China.
authors.forename: Song-Jhih
authors.initials: SJ
authors.lastname: Chen
mesh_terms: D000465:Algorithms; D003142:Communication; D016494:Computer Security / Q000295:instrumentation*; D003219:Confidentiality; D000069098:Health Smart Cards; D006801:Humans; D017711:Nonlinear Dynamics; D017216:Telemedicine / Q000295:instrumentation*
keywords: Chaotic maps; Dynamic identity; Session key agreement; User authentication; e-Healthcare system