Improved Channel Information Extraction toward Efficient Secret Key Generation

Exploiting the reciprocity and randomness of the wireless channel for secret key generation (SKG) is a promising technique, which attracts great interests recently toward physical layer security. Although various methods have been developed for efficient SKG, the key disagreement rate (KDR) performance is still difficult to be ensured when the transmission channel is with severe interference and noise. To alleviate this problem, this paper presents an efficient channel information extraction algorithm based on extracting effective channel paths to reduce the KDR. Simulation results demonstrate that the proposed algorithm provides significant improvement compared with the existing approaches.

[1]  Hai Su,et al.  Secret key generation exploiting channel characteristics in wireless communications , 2011, IEEE Wireless Communications.

[2]  Junqing Zhang,et al.  Efficient Key Generation by Exploiting Randomness From Channel Responses of Individual OFDM Subcarriers , 2016, IEEE Transactions on Communications.

[3]  Jian Su,et al.  DFT-Based Channel Estimation in Comb-Type Pilot-Aided OFDM Systems with Virtual Carriers , 2007, 2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications.

[4]  Wade Trappe,et al.  Information-Theoretically Secret Key Generation for Fading Wireless Channels , 2009, IEEE Transactions on Information Forensics and Security.

[5]  T. Aaron Gulliver,et al.  Secret Key Generation Using Chaotic Signals Over Frequency Selective Fading Channels , 2015, IEEE Transactions on Information Forensics and Security.

[6]  Hsiao-Chun Wu,et al.  Physical layer security in wireless networks: a tutorial , 2011, IEEE Wireless Communications.

[7]  Kai Zeng,et al.  Physical layer key generation in wireless networks: challenges and opportunities , 2015, IEEE Communications Magazine.

[8]  Hai Su,et al.  Fast and scalable secret key generation exploiting channel phase randomness in wireless networks , 2011, 2011 Proceedings IEEE INFOCOM.

[9]  Alex Reznik,et al.  Extracting Secrecy from Jointly Gaussian Random Variables , 2006, 2006 IEEE International Symposium on Information Theory.

[10]  Christof Paar,et al.  Bringing PHY-Based Key Generation into the Field: An Evaluation for Practical Scenarios , 2015, 2015 IEEE 82nd Vehicular Technology Conference (VTC2015-Fall).

[11]  Hisato Iwai,et al.  Physical-Layer Secret Key Agreement in Two-Way Wireless Relaying Systems , 2011, IEEE Transactions on Information Forensics and Security.

[12]  Jon W. Wallace,et al.  Automatic Secret Keys From Reciprocal MIMO Wireless Channels: Measurement and Analysis , 2010, IEEE Transactions on Information Forensics and Security.

[13]  Wenliang Du,et al.  Cooperative Key Generation in Wireless Networks , 2012, IEEE Journal on Selected Areas in Communications.

[14]  Yang Wang,et al.  Fast and practical secret key extraction by exploiting channel response , 2013, 2013 Proceedings IEEE INFOCOM.

[15]  Tim Güneysu,et al.  Information reconciliation schemes in physical-layer security: A survey , 2016, Comput. Networks.

[16]  Yuping Zhao,et al.  A novel channel estimation method for OFDM mobile communication systems based on pilot signals and transform-domain processing , 1997, 1997 IEEE 47th Vehicular Technology Conference. Technology in Motion.

[17]  Nianmin Yao,et al.  On the using of discrete wavelet transform for physical layer key generation , 2017, Ad Hoc Networks.