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Adaptive and optimum secret key establishment for vehicular communications and sensing
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Bottarelli, Mirko, Karadimas, Petros, Epiphaniou, Gregory, Kbaier Ben Ismail, Dhouha and Maple, Carsten (2021) Adaptive and optimum secret key establishment for vehicular communications and sensing. IEEE Transactions on Vehicular Technology . (In Press)
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WRAP-Adaptive-optimum-secret-key-establishment-vehicular-sensing-2021.pdf - Accepted Version - Requires a PDF viewer. Download (990Kb) | Preview |
Abstract
In intelligent transportation systems (ITS), communications
between vehicles, i.e. vehicle-to-vehicle (VV) communications
are of greatest importance to facilitate autonomous
driving. The current state-of-the-art for secure data exchange
in VV communications relies on public-key cryptography (PKC)
consuming significant computational and energy resources for the
encryption/decryption process and large bandwidth for the key
distribution. To overcome these limitations, physical-layer security
(PLS) has emerged as a lightweight solution by exploiting the
physical characteristics of the VV communication channel to generate
symmetric cryptographic keys. Currently, key-generation
algorithms are designed via empirical parameter settings, without
resulting optimum key-generation performance. In this paper,
we devise a key-generation algorithm, namely, Perturbe-Observe
(PO), for PLS in VV communications by introducing a novel
channel response quantisation method that results optimum
performance via analytical parameter settings. Contrary to the
current state-of-the-art, the channel responses incorporate all VV
channel attributes that contribute to temporal variability, such
as three dimensional (3D) scattering and scatterers’ mobility. An
extra add-on is further incorporated that enables the algorithm
to adapt to the inherent non-reciprocity of the VV channel
responses at the legitimate entities. Optimum performance is
evidenced via maximisation of the key bit generation rate (BGR)
and key entropy (H) and minimisation of the key bit mismatch
rate (BMR). A new metric is further introduced, the so-called
secret-bit generation rate (SBGR), as the ratio of the number
of bits which are successfully used to compose keys to the total
amount of channel samples. SBGR unifies BGR and BMR and
is thus maximised by the proposed algorithmic process.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software T Technology > TE Highway engineering. Roads and pavements T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) | ||||||
| Library of Congress Subject Headings (LCSH): | Wireless communication systems , Wireless communication systems -- Security measures, Vehicular ad hoc networks (Computer networks), Vehicular ad hoc networks (Computer networks) -- Security measures, Intelligent transportation systems, Data encryption (Computer science) | ||||||
| Journal or Publication Title: | IEEE Transactions on Vehicular Technology | ||||||
| Publisher: | IEEE | ||||||
| ISSN: | 0018-9545 | ||||||
| Official Date: | 2021 | ||||||
| Dates: |
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| Status: | Peer Reviewed | ||||||
| Publication Status: | In Press | ||||||
| Publisher Statement: | © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | ||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||
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