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Resilient and verifiable outsourced attribute-based non-interactive oblivious transfer protocol for tactical edge
Weiwei Liu1, Binghao Fu2, Lulin Wang1
1School of Mathematics and Statistics, North China University of Water Resources and Electric Power, Zhengzhou, 450046, China.
Scientific Reports
|March 3, 2026
Summary
This study introduces a secure outsourced decryption protocol for Tactical Edge Networks, enhancing data privacy and resilience in battlefield communications. The new method protects against node compromise and query leakage, ensuring efficient, need-to-know data access.
Area of Science:
- Cybersecurity
- Network Security
- Cryptography
Background:
- Tactical Edge Networks (TENs) require secure data sharing for time-sensitive intelligence in hostile environments like Network-Centric Warfare (NCW) and Internet of Battlefield Things (IoBT).
- Ciphertext-Policy Attribute-Based Encryption (CP-ABE) offers fine-grained access control but faces computational challenges on resource-constrained devices.
- Outsourcing decryption to Tactical Cloud Nodes (TCNs) introduces vulnerabilities like key exposure and query leakage.
Purpose of the Study:
- To develop a resilient and verifiable outsourced attribute-based non-interactive oblivious transfer (NIOT) protocol for TENs.
- To address security and privacy concerns in zero-trust deployments within tactical networks.
- To balance system efficiency with robust security and privacy for edge devices.
Main Methods:
- Integration of a receiver-privacy-only, index-hiding mechanism (RP-NIOT) into an offline/online encryption pipeline.
- Incorporation of a user-held blinding factor to decouple outsourcing from final decryption, enhancing resilience against TCN compromise.
- Implementation of a lightweight hash-based verification mechanism to ensure outsourced computation correctness.
Main Results:
- The proposed protocol achieves resilience, data confidentiality, and other security objectives.
- It effectively conceals user query indices from the Command Center (CC) using RP-NIOT.
- The framework ensures outsourced computation integrity through hash-based verification.
Conclusions:
- The novel protocol is suitable for latency-sensitive tactical applications due to its constant, policy-size independent online terminal overhead.
- It provides a secure and efficient solution for need-to-know data access in resource-constrained and hostile tactical edge environments.
- The framework enhances zero-trust security by mitigating vulnerabilities associated with outsourced decryption.
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