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Non-Reconciled Physical-Layer Keys-Assisted Secure Communication Scheme Based on Channel Correlation.
Meng Wang1, Kaizhi Huang2, Zheng Wan2
1School of Cyber Science and Engineering, Zhengzhou University, Zhengzhou 450001, China.
Entropy (Basel, Switzerland)
|August 26, 2022
Summary
This study introduces a novel secure communication scheme using non-reconciled physical-layer keys. It leverages channel correlation to enhance security and transmission rates, reducing overhead and leakage risks.
Area of Science:
- Wireless communication security
- Physical-layer security
- Information theory
Background:
- Physical-layer key generation necessitates information reconciliation, increasing overhead and security risks.
- Existing non-reconciled key schemes use channel coding but reduce secure transmission rates due to redundancy.
Purpose of the Study:
- To propose a non-reconciled physical-layer key-assisted secure communication scheme.
- To address the trade-off between error correction and secure transmission rate in non-reconciled key generation.
Main Methods:
- Designed a signal frame to exploit channel correlation between key generation and secure transmission.
- Generated non-reconciled keys from wireless channel characteristics for data encryption.
- Developed an adaptive coding algorithm based on equivalent channel for reliable data transmission.
Main Results:
- The proposed scheme effectively utilizes channel correlation for secure key generation.
- Demonstrated a low bit error ratio (BER) and a high secure transmission rate.
- Reduced communication overhead and minimized information leakage risks.
Conclusions:
- The novel scheme offers improved performance in terms of security and efficiency.
- Channel correlation is a viable factor for enhancing non-reconciled key-based secure communication.
- The adaptive coding algorithm ensures reliable data transmission alongside enhanced security.
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