Novel Lagrange interpolation polynomials for dynamic access control in a healthcare cloud system

Area of Science:

• Cloud Computing Security
• Healthcare Information Systems
• Cryptography

Background:

• User authority in personal health records (PHRs) is often dictated by cloud system owners.
• Secure authentication is crucial for accessing sensitive PHR data within healthcare cloud environments.

Purpose of the Study:

• To propose a novel dynamic access control algorithm for enhancing the security of healthcare cloud systems.
• To ensure secure user authentication and data access for personal health records (PHRs).

Main Methods:

• Development of a dynamic access control algorithm based on Lagrange interpolation polynomial with timestamps.
• Implementation of time-slot based access control to enhance system security.
• Security analysis to evaluate resistance against common cyber-attacks.

Main Results:

• The proposed algorithm effectively authenticates users using key information and timestamps.
• The system demonstrates robust resistance against external, internal, collaborative, and equation-based attacks.
• Achieved computational complexity for polynomial operations is O(n*m*(log m)^2).

Conclusions:

• The novel dynamic access control algorithm significantly enhances the security of healthcare cloud systems.
• Timestamp-integrated Lagrange interpolation polynomials provide a secure and efficient method for PHR access control.
• The system offers a promising solution for protecting sensitive health data in cloud environments.