Opportunistic access control scheme for enhancing IoT-enabled healthcare security using blockchain and machine...

Area of Science:

• Health Informatics
• Cybersecurity
• Internet of Things (IoT)

Background:

• Healthcare leverages IoT for ubiquitous, personalized patient services, storing sensitive data in authorized repositories with access-level security.
• Sophisticated cyberattacks (data breaches, integrity issues) and scalability concerns with conventional solutions challenge healthcare data security and privacy.
• Traditional access control systems exhibit security flaws and authorization errors due to static user behavior models, especially with multi-key authentication.

Purpose of the Study:

• To introduce an Opportunistic Access Control Scheme (OACS) for enhanced access-level security in healthcare IoT environments.
• To address limitations of conventional access control by basing permissions on user requirements and data context.
• To improve the security, efficiency, and reliability of healthcare data access and processing.

Main Methods:

• Implemented an Opportunistic Access Control Scheme (OACS) integrating IoT, blockchain, and machine learning for access control.
• Utilized blockchain for recording and revoking access grants based on access and delegation sequences.
• Employed a trained learning paradigm to analyze blockchain recommendations for access decisions and utilized centralized IoT security augmentation and assessment.

Main Results:

• The proposed method reduced false rates by 11.74%, increased access rates by 13.1%, and improved access and processing speeds by 12.36% and 13.23%, respectively.
• The OACS demonstrated further improvements, decreasing false rates by 10.64%, processing time by 15.62%, and failure rates by 10.95%.
• Achieved significant reductions in false and failure rates while enhancing access and processing efficiency.

Conclusions:

• The Opportunistic Access Control Scheme (OACS) offers a robust and efficient solution for securing healthcare data in IoT environments.
• OACS effectively mitigates security and privacy risks associated with healthcare data by enabling dynamic, context-aware access control.
• The integration of blockchain and machine learning within OACS enhances data security, reduces processing overhead, and improves user access experience.