Verification of Key Generation from Individual OFDM Subcarrier's Channel Response

Zhang, Junqing; Woods, Roger; Marshall, Alan; Duong, Trung Q.

doi:10.1109/glocomw.2015.7414111

Cited by 15 publications

(9 citation statements)

References 27 publications

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“…The extraction process is shown in Fig. 1, which includes channel probing [31], [32], quantification [33]- [35], information reconciliation [36]- [39] and privacy amplification [40], [41].…”

Section: A Key Generation Based On Wireless Channel Characteristicsmentioning

confidence: 99%

Physical Layer Encryption Algorithm Based on Polar Codes and Chaotic Sequences

Lei

et al. 2019

IEEE Access

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Researches on 5th generation mobile communication networks (5G) are emerging to meet the demands of rapidly developing communications applications. The reliability and security of data have become key factors of its development, and thus 5G has put forward higher requirements for new coding and encryption technologies. In this paper, a physical layer encryption algorithm based on polarization codes and chaotic sequences is proposed to improve the reliability and confidentiality of transmission. In our scheme, chaotic sequences are allocated in the frozen bits of polar codes. Therefore, error correction and encryption can be performed simultaneously. Since the frozen bits are unknown to the eavesdroppers, it is difficult for them to decode the transmitted bits without the knowledge of the chaotic sequences. To further improve the security, we propose to generate the chaotic sequences by using the channel state information. Besides, the chain effects of delayed feedback are applied to increase the decrypted complexity of the eavesdroppers in this paper. Theoretic analysis and simulation results both show that the proposed algorithms can achieve high security without any error rate performance loss. INDEX TERMS Physical layer encryption, polar codes, chaotic sequences, frozen bits.

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Section: A Key Generation Based On Wireless Channel Characteristicsmentioning

confidence: 99%

Physical Layer Encryption Algorithm Based on Polar Codes and Chaotic Sequences

Lei

et al. 2019

IEEE Access

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“…Some researchers considered using channel frequency response (CFR) which provides channel effect in frequency domain. CFR-based systems have been mostly implemented in IEEE 802.11 OFDM systems [29], [30], as it is convenient to extract channel estimation.…”

Section: Related Workmentioning

confidence: 99%

A Practical Secret Key Generation Scheme Based on Wireless Channel Characteristics for 5G Networks

Wang

Kang

et al. 2020

IEICE Trans. Inf. & Syst.

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Secret key generation based on channel characteristics is an effective physical-layer security method for 5G wireless networks. The issues of how to ensure the high key generation rate and correlation of the secret key under active attack are needed to be addressed. In this paper, a new practical secret key generation scheme with high rate and correlation is proposed. In our proposed scheme, Alice and Bob transmit independent random sequences instead of known training sequences or probing signals; neither Alice nor Bob can decode these random sequences or estimate the channel. User's random sequences together with the channel effects are used as common random source to generate the secret key. With this solution, legitimate users are able to share secret keys with sufficient length and high security under active attack. We evaluate the proposed scheme through both analytic and simulation studies. The results show that our proposed scheme achieves high key generation rate and key security, and is suitable for 5G wireless networks with resource-constrained devices.

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“…In coherent time, both parties of the legitimate communication transmit the detection signal periodically, and obtain the observed values of the wireless channel characteristics. The main characteristics of wireless channel used to extract keys are multipath relative delay [33] and channel state information (CSI). CSI includes channel frequency response [34] and channel impulse response (including phases and amplitude).…”

Section: B Key Generation Based On Wireless Channel Characteristicsmentioning

confidence: 99%

A Joint Physical Layer Encryption and PAPR Reduction Scheme Based on Polar Codes and Chaotic Sequences in OFDM System

Shi

et al. 2019

IEEE Access

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Channel coding and security are important in a communication system. The 5th generation (5G) mobile communication networks call for higher requirements of new coding technologies and encryption technologies. As an efficient coding method, polar codes have attracted more attention in recent years. Besides, the peak-to-average-power ratio (PAPR) is a major problem of the orthogonal frequency-division multiplexing (OFDM) system, which will significantly affect the performance of the OFDM system. In this paper, joint physical-layer encryption and PAPR reduction scheme is proposed, aiming to solve the PAPR problem and achieve high security of the transmission system. In this scheme, we utilize the key generation technology of wireless channels to get the initial value of chaotic sequences. Then, the chaotic sequences can be used to encrypt the information and reduce PAPR simultaneously. Moreover, we use the best information bits of polar codes to store the serial number index of chaotic sequences. The theoretic analysis and simulation results show that the proposed scheme can not only achieve high security in the physical layer but also reduce PAPR in the OFDM system without increasing system complexity and latency.

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Verification of Key Generation from Individual OFDM Subcarrier's Channel Response

Cited by 15 publications

References 27 publications

Physical Layer Encryption Algorithm Based on Polar Codes and Chaotic Sequences

Physical Layer Encryption Algorithm Based on Polar Codes and Chaotic Sequences

A Practical Secret Key Generation Scheme Based on Wireless Channel Characteristics for 5G Networks

A Joint Physical Layer Encryption and PAPR Reduction Scheme Based on Polar Codes and Chaotic Sequences in OFDM System

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