Article
Version 1
Preserved in Portico This version is not peer-reviewed
IRS Assisted Hybrid Secret Key Generation
Version 1
: Received: 8 August 2023 / Approved: 8 August 2023 / Online: 9 August 2023 (03:14:23 CEST)
A peer-reviewed article of this Preprint also exists.
Zhang, M.; Zhuang, Z.; Kim, S. IRS-Assisted Hybrid Secret Key Generation. Symmetry 2023, 15, 1906. Zhang, M.; Zhuang, Z.; Kim, S. IRS-Assisted Hybrid Secret Key Generation. Symmetry 2023, 15, 1906.
Abstract
Physical layer secret key (SK) generation is known to be an efficient means to achieve high secrecy rate, on the condition that dynamic channel state information (CSI) is provided. For this reason, the secrecy performance is highly degraded in a static environment. The intelligent reflecting surface (IRS) is a promising solution to create dynamic randomness, and thus lead to enhanced secrecy performance regardless of the user environments. This paper proposes an IRS-assisted physical layer SK generation scheme, by efficiently combing phase information of the direct and reflected channel information in a hybrid way. In particular, the initial SKs are obtained by adopting efficient phase quantization method with symmetric bit allocation to complex numbered channel estimates. Simulation results show that the proposed hybrid phase quantization (PQ) can improve the SK generation rate and the key disagreement probability in a static environment.
Keywords
secret key generation; intelligent reflecting surface; phase quantization
Subject
Engineering, Telecommunications
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Comments (0)
We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.
Leave a public commentSend a private comment to the author(s)
* All users must log in before leaving a comment
