Can Formal Security Verification Really Be Optional? Scrutinizing the Security of IMD Authentication Protocols

Area of Science:

• Biomedical Engineering
• Cybersecurity
• Medical Device Technology

Background:

• Implantable medical devices (IMDs) are vital for monitoring critical organs, but their wireless nature and resource constraints make them vulnerable to security threats.
• Inadequate security can jeopardize patient safety and manufacturer reputation, necessitating robust protection for data confidentiality, integrity, and availability.

Purpose of the Study:

• To address critical issues in current implantable medical device (IMD) authentication protocols, including inadequate capabilities, high overheads, and lack of formal verification.
• To analyze existing IMD authentication protocols using formal methods and compare their security strengths and performance characteristics.

Main Methods:

• Formal analysis of implantable medical device (IMD) authentication protocols using Burrows-Abadi-Needham (BAN) logic.
• Utilizing the Automated Validation of Internet Security Protocols and Applications (AVISPA) platform for rigorous security verification.
• Comparative analysis of schemes based on security, computational overhead, latency, and features like emergency authentication and adaptability.

Main Results:

• Identified critical shortcomings in existing IMD authentication protocols, such as insufficient emergency authentication, key update mechanisms, anonymity, and adaptability.
• Highlighted significant computational and communication overheads in current solutions.
• Exposed a lack of rigorous formal security verification in existing research.

Conclusions:

• Current implantable medical device (IMD) authentication protocols require enhancement to meet essential security and functional requirements.
• Formal verification methods like BAN logic and AVISPA are crucial for validating the security and performance of IMD systems.
• Future research must focus on developing secure, efficient, and adaptable IMD authentication protocols with formal security guarantees.