Password authentication with insecure communication
Communications of the ACM
Examining Smart-Card Security under the Threat of Power Analysis Attacks
IEEE Transactions on Computers
CRYPTO '99 Proceedings of the 19th Annual International Cryptology Conference on Advances in Cryptology
Authenticated multiple key exchange protocols based on elliptic curves and bilinear pairings
Computers and Electrical Engineering
Provably secure and efficient identification and key agreement protocol with user anonymity
Journal of Computer and System Sciences
A Secure Authentication Scheme for Telecare Medicine Information Systems
Journal of Medical Systems
An Improved Authentication Scheme for Telecare Medicine Information Systems
Journal of Medical Systems
Security and Communication Networks
A Secure Biometrics-based Authentication Scheme for Telecare Medicine Information Systems
Journal of Medical Systems
Journal of Medical Systems
A Patient Privacy Protection Scheme for Medical Information System
Journal of Medical Systems
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To ensure patients' privacy, such as telephone number, medical record number, health information, etc., authentication schemes for telecare medicine information systems (TMIS) have been studied widely. Recently, Wei et al. proposed an efficient authentication scheme for TMIS. They claimed their scheme could resist various attacks. However, in this paper, we will show their scheme is vulnerable to an off-line password guessing attack when user's smart card is lost. To improve the security, we propose a new authentication scheme for TMIS. The analysis shows our scheme could overcome the weaknesses in Wei et al.'s scheme and has better performance than their scheme.