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A more secure anonymous user authentication scheme for the integrated EPR information system.

Fengtong Wen1

  • 1School of Mathematical Sciences, University of Jinan, Jinan, 250022, China, wftwq@163.com.

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This study reveals vulnerabilities in Lee et al.’s smart card authentication scheme for electronic patient record (EPR) systems, specifically against password guessing attacks. A new, more secure quadratic residue-based scheme is proposed, enhancing user authentication and anonymity in EPR systems.

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Area of Science:

  • Computer Science
  • Information Security
  • Healthcare Informatics

Background:

  • Secure user mutual authentication is critical for integrated electronic patient record (EPR) systems.
  • Existing password-based smart card schemes for EPR systems face security challenges.
  • Lee et al. proposed a scheme claimed to resist network attacks, including lost smart card attacks.

Purpose of the Study:

  • To reanalyze the security of Lee et al.'s proposed password-based authentication scheme for EPR systems.
  • To identify vulnerabilities in the existing scheme, particularly against off-line password guessing and user impersonation attacks.
  • To propose a novel, more secure authentication scheme for integrated EPR information systems.

Main Methods:

  • Security analysis of Lee et al.'s scheme, focusing on compromised smart card scenarios.
  • Development of a new authentication scheme utilizing quadratic residues.
  • Comparative security evaluation of the proposed scheme against known attacks.

Main Results:

  • Lee et al.'s scheme is vulnerable to off-line password guessing attacks if the smart card is compromised.
  • The identified vulnerabilities lead to insecure user impersonation.
  • The proposed quadratic residue-based scheme effectively resists various network attacks and provides user anonymity.

Conclusions:

  • Lee et al.'s scheme is not secure for integrated EPR information systems due to identified password guessing vulnerabilities.
  • The newly proposed quadratic residue-based authentication scheme offers enhanced security and user anonymity.
  • The new scheme provides a more robust solution for secure authentication in EPR systems.