Physical‐Layer Authentication via a Dynamic Scaling. Issue 4 (1st July 2020)

• Record Type: Journal Article
• Authors: LI, Min; JIANG, Shaoquan; LIAO, Yongjian
• Is Part Of: Chinese journal of electronics. Volume 29:Issue 4(2020)
• Page Start: 651
• Page End: 659
• Publication Date: 2020-07-01
• Subjects: cryptographic protocols -- cryptography -- error analysis -- Gaussian noise -- message authentication -- Rayleigh channels -- telecommunication security; dynamic scaling factor -- basic codeword -- Gaussian noise -- Rayleigh fading -- authenticity -- receiver Bob -- source state -- sender Alice -- message authentication -- physical‐layer authentication; Physical‐layer authentication -- Information security -- Message authentication code; Electronics -- Periodicals; Electronics -- China -- Periodicals; Electronics; China; Periodicals; 621.38105
• DOI: 10.1049/cje.2020.05.009
• Languages: English
• ISSNs: 1022-4653

Abstract

Abstract : Message authentication is a process that allows sender Alice to transmit a source state to receiver Bob such that the latter is assured of the authenticity. We study this problem in the physical‐layer where the channel is degraded by a Rayleigh fading and a Gaussian noise. We propose an efficient construction for our problem. Our idea is to amplify a basic codeword of the source state with a small but dynamic scaling factor. This scaling factor is asymptotically 1. It thus essentially incurs no power expansion. Our authentication is achieved through a statistical test. Our scheme is provably secure and performs better than the related existing schemes. Further, our error analysis allows it to be realized with very practical parameters.