The Security Network Coding System With Physical Layer Key Generation in Two-Way Relay Networks

Network coding is one of the key technologies to improve the throughput, efficiency, and reliability of two-way relay networks (TWRNs). However, it also brings some new security problems when the physical layer security is considered. In this paper, we present security network coding schemes with ke...

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Bibliographic Details
Published in:IEEE access Vol. 6; pp. 40673 - 40681
Main Authors: Kong, Yuanyuan, Lyu, Bin, Chen, Feng, Yang, Zhen
Format: Journal Article
Language:English
Published: Piscataway IEEE 01.01.2018
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Adaptive algorithms
channel impulse response
Channels
Coding
Eavesdropping
Measurement
Network coding
Network reliability
Physical layer
Physical layer security
Quantization (signal)
Relay networks
Relay networks (telecommunications)
secret key generation
Security
Security management
security network coding
Wireless communication
Wiretapping
ISSN:2169-3536, 2169-3536
Online Access:Get full text
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Summary:Network coding is one of the key technologies to improve the throughput, efficiency, and reliability of two-way relay networks (TWRNs). However, it also brings some new security problems when the physical layer security is considered. In this paper, we present security network coding schemes with key generation from multipath channels to enhance the security performance for TWRN. First, a joint key generation (JKG) approach is proposed, which generates secret keys based on channel impulse responses of multipath channels. Different from the traditional approaches, key exchange is not necessary for the JKG approach such that the eavesdroppers cannot obtain any information about secret keys. Then, an adaptive quantization algorithm is proposed to adaptively choose different parameters for quantization in key generation, which can improve the secret key rate with an acceptable secret key disagreement probability and can still work even if the SNR is low. Finally, security network coding systems are constructed to combine the key generation approaches with the proposed algorithm. Simulation results show that the proposed schemes are valid and secure against wiretap attacks.
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ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2018.2858282