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Cryptanalysis and improvement of a distributed zero trust scheme for airborne wireless sensor networks
Feihong Xu1, Fei Zhu1,2, Junhua Wang3
1Hubei Engineering Research Center for BDS-Cloud High-Precision Deformation Monitoring, School of Artificial Intelligence, Wuchang University of Technology, Wuhan, 430223, China.
Scientific Reports
|July 7, 2026
Summary
A new security flaw was found in the certificateless aggregation signcryption (CLASC) scheme used in airborne wireless sensor networks (AWSNs). Researchers developed a secure CLASC scheme to enhance aircraft security against cyber threats.
Area of Science:
- Computer Science
- Cybersecurity
- Aerospace Engineering
Background:
- Airborne wireless sensor networks (AWSNs) are crucial for modern aircraft monitoring.
- Bidirectional data flows in AWSNs pose security risks, especially from insider threats.
- Existing decentralized zero trust frameworks for AWSNs rely on certificateless aggregation signcryption (CLASC) schemes.
Purpose of the Study:
- To identify security vulnerabilities in the CLASC scheme used in decentralized zero trust frameworks for AWSNs.
- To propose a security-enhanced CLASC scheme to address identified vulnerabilities.
- To evaluate the performance of the proposed scheme and its integration into a zero trust framework.
Main Methods:
- A concrete security attack was devised to demonstrate the insecurity of the underlying CLASC scheme.
- A new, security-enhanced CLASC scheme was designed and its security proven under standard assumptions.
- Performance analysis comparing computational and communication costs with existing schemes was conducted.
Main Results:
- The underlying CLASC scheme was found to be vulnerable to public-key replacement attacks, compromising unforgeability.
- The proposed security-enhanced CLASC scheme effectively addresses the identified vulnerabilities.
- The enhanced CLASC scheme demonstrates practical performance advantages over related works.
Conclusions:
- The existing decentralized zero trust framework for AWSNs is insecure due to its CLASC scheme.
- The developed security-enhanced CLASC scheme provides a robust solution for securing AWSNs.
- The improved framework enhances the security isolation of aircraft control and operational domains.
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