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A secure and robust password-based remote user authentication scheme using smart cards for the integrated EPR

Ashok Kumar Das1

  • 1Center for Security, Theory and Algorithmic Research International Institute of Information Technology, Hyderabad, 500 032, India, iitkgp.akdas@gmail.com.

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|February 11, 2015
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Summary

This study addresses security weaknesses in existing remote user authentication schemes for Electronic Patient Record systems. A new, secure, and efficient scheme is proposed and formally verified for enhanced data protection.

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Area of Science:

  • Computer Science
  • Information Security
  • Healthcare Informatics

Background:

  • Integrated Electronic Patient Record (EPR) systems are crucial for medical decision-making and health analysis.
  • Protecting sensitive patient data from unauthorized access and theft during transmission is a critical challenge.
  • Existing password-based remote user authentication schemes for EPR systems, like those by Lee et al. and Wen, have demonstrated security vulnerabilities.

Purpose of the Study:

  • To identify and analyze the security weaknesses in existing password-based remote user authentication schemes for integrated EPR systems.
  • To propose a novel, secure, and efficient password-based remote user authentication scheme using smart cards for EPR systems.
  • To formally verify the security of the proposed scheme against known attacks.

Main Methods:

  • Critically analyzed the security flaws in Lee et al.'s and Wen's authentication schemes, focusing on password change, insider attacks, and formal verification.
  • Developed a new password-based remote user authentication scheme utilizing one-way hash functions and bitwise XOR operations.
  • Employed formal security analysis and simulation using the Automated Validation of Internet Security Protocols and Applications (AVISPA) tool for verification.

Main Results:

  • Identified three key security weaknesses in prior schemes: flawed password change, vulnerability to privileged insider attacks, and lack of formal security verification.
  • The proposed scheme effectively remedies these identified security drawbacks.
  • The proposed scheme demonstrates comparable efficiency to existing methods, relying on hash functions and XOR operations.

Conclusions:

  • The proposed password-based remote user authentication scheme offers enhanced security for integrated EPR systems.
  • The scheme is proven secure against various known attacks through rigorous analysis and formal verification.
  • This work contributes to securing sensitive patient information in digital healthcare environments.