An efficient key-management scheme for hierarchical access control in e-medicine system

Area of Science:

• Computer Science
• Information Security
• Medical Informatics

Background:

• Sharing patient medical histories online is crucial for e-medicine systems.
• Efficient key management is needed for dynamic access in hierarchical user structures.

Purpose of the Study:

• To propose a practical solution for dynamic access control in user hierarchies within e-medicine systems.
• To address the cryptographic needs for secure sharing of patient data.

Main Methods:

• Development of a novel key management method based on hybrid cryptosystems.
• Analysis of the proposed scheme's time complexity and storage requirements.
• Comparison with existing schemes, specifically Nikooghadam et al.'s method.

Main Results:

• The proposed scheme significantly reduces time complexity and storage space compared to previous methods.
• The solution offers provable security and is easy to implement.
• Demonstrated suitability for e-medicine environments.

Conclusions:

• The developed hybrid cryptosystem provides an efficient and secure solution for key management in e-medicine.
• The scheme's practicality and performance make it ideal for enhancing patient data sharing.
• Offers a significant improvement over existing approaches for secure hierarchical access.