Improved Dynamic ID-based Authentication Scheme for Telecare Medical Information Systems

In order to protect users’ identity privacy, Chen et al. proposed an efficient dynamic ID-based authentication scheme for telecare medical information systems. However, Chen et al.’s scheme has some weaknesses. In Chen et al.’s scheme, an attacker can track a user by a linkability attack or an off-l...

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Bibliographic Details
Published in:Journal of medical systems 2013-04, Vol.37 (2), p.9912-9912, Article 9912
Main Authors: Cao, Tianjie, Zhai, Jingxuan
Format: Article
Language:English
Subjects:
Authentication
Authentication protocols
Computer Security
Confidentiality
Dynamical systems
Dynamics
Electronic Health Records
Health Informatics
Health Sciences
Identification systems
Information systems
Medical
Medicine
Medicine & Public Health
Original Paper
Passwords
Patient Identification Systems
Radio Frequency Identification Device
Smart cards
Statistics for Life Sciences
Telecare
Telemedicine
User-Computer Interface
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Summary:In order to protect users’ identity privacy, Chen et al. proposed an efficient dynamic ID-based authentication scheme for telecare medical information systems. However, Chen et al.’s scheme has some weaknesses. In Chen et al.’s scheme, an attacker can track a user by a linkability attack or an off-line identity guessing attack. Chen et al.’s scheme is also vulnerable to an off-line password guessing attack and an undetectable on-line password guessing attack when user’s smart card is stolen. In server side, Chen et al.’s scheme needs large computational load to authentication a legal user or reject an illegal user. To remedy the weaknesses in Chen et al.’s scheme, we propose an improved smart card based password authentication scheme. Our analysis shows that the improved scheme can overcome the weaknesses in Chen et al.’s scheme.
ISSN:0148-5598
1573-689X
DOI:10.1007/s10916-012-9912-5