Secure and Efficient Two-Factor User Authentication Scheme with User Anonymity for Network Based E-Health Care Applications

摘要: Benefited from the development of network and communication technologies, E-health care systems telemedicine have got fast development. By using systems, patient can enjoy remote medical service provided by server. Medical data are important privacy information for patient, so it is an issue to ensure secure transmitted through public network. Authentication scheme thwart unauthorized users accessing services via insecure environments, user authentication with protection mechanism security systems. Recently, based on three factors (password, biometric smart card), was been proposed Amin et al., they claimed that their withstand most common attacks. Unfortunate, we find cannot achieve untraceability feature patient. Besides, lacks a password check such inefficient login mistake input wrong password. Due same reason, vulnerable Denial Service (DoS) attack if updates mistakenly In order improve level application, robust Then, prove our analysed. Security performance analyses show more powerful when compared other related schemes.