title: An improved biometrics-based remote user authentication scheme with user anonymity.
abstract: The authors review the biometrics-based user authentication scheme proposed by An in 2012. The authors show that there exist loopholes in the scheme which are detrimental for its security. Therefore the authors propose an improved scheme eradicating the flaws of An's scheme. Then a detailed security analysis of the proposed scheme is presented followed by its efficiency comparison. The proposed scheme not only withstands security problems found in An's scheme but also provides some extra features with mere addition of only two hash operations. The proposed scheme allows user to freely change his password and also provides user anonymity with untraceability.
authors.affiliation: King Saud University, P.O. Box 92144, Riyadh 11653, Saudi Arabia.
authors.forename: Muhammad Khurram
authors.initials: MK
authors.lastname: Khan
authors.affiliation: Department of Mathematics, Agra College, Agra, Dr. B. R. A. University, Agra, Uttar Pradesh 282002, India.
authors.forename: Saru
authors.initials: S
authors.lastname: Kumari
mesh_terms: D056667:Biometric Identification; D016494:Computer Security; D020878:Device Removal; D006801:Humans; D014584:User-Computer Interface