Work

Pilot Randomization to Protect MIMO Secret Key Generation Systems Against Injection Attacks

Year: 2023

Type: article

Abstract: In this letter, we investigate the problem of secret key generation under an injection attack, which refers to tampering of pilot signals over the air so that part of the shared randomness observed at the legitimate parties is controlled by the adversary. It has been shown that to launch such an attack, an adversary only needs one extra antenna, compared to the legitimate parties, in a single input single output (SISO) network. In this letter, we generalize this result for the multiple input multiple output (MIMO) case. Furthermore, we propose pilot randomization as a means to protect against injection attacks by reducing them to jamming attacks that constitute a less serious threat. Finally, we derive a closed-form expression for the secret key rate of the investigated MIMO setting.

Source: IEEE Wireless Communications Letters

DOI: 10.1109/lwc.2023.3268714

Authors: Thuy M. Pham, Miroslav Mitev, Arsenia Chorti, Gerhard P. Fettweis

Institutions: Barkhausen Institut, Centre National de la Recherche Scientifique, CY Cergy Paris Université, Equipes Traitement de l'Information et Systèmes, École Nationale Supérieure de l'Électronique et de ses Applications, Technische Universität Dresden

Language: English

Topic: Wireless Communication Security Techniques

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W4366492995

FWCI: 0.713

Cites: 11

Cited by: 10

Related to: 10