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Adaptive and optimum secret key establishment for secure vehicular communications
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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 secure vehicular communications. IEEE Transactions on Vehicular Technology, 70 (3). pp. 2310-2321. doi:10.1109/TVT.2021.3056638
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WRAP-Adaptive-optimum-secret-key-establishment-vehicular-sensing-2021.pdf - Accepted Version - Requires a PDF viewer. Download (990Kb) | Preview |
Official URL: https://doi.org/10.1109/TVT.2021.3056638
Abstract
In intelligent transportation systems (ITS), communications between vehicles, i.e. vehicle-to-vehicle (V2V) communications are of greatest importance to facilitate autonomous driving. The current state-of-the-art for secure data exchange in V2V 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 V2V communication channel to generate symmetric cryptographic keys. Currently, key-generation algorithms are designed via empirical parameter settings, without resulting in optimum key-generation performance. In this paper, we devise a key-generation algorithm for PLS in V2V communications by introducing a novel channel response quantisation method that results in optimum performance via analytical parameter settings. Contrary to the current state-of-the-art, the channel responses incorporate all V2V channel attributes that contribute to temporal variability, such as three dimensional (3D) scattering and scatterers' mobility. An extra functionality, namely, Perturbe-Observe (PO), is further incorporated that enables the algorithm to adapt to the inherent non-reciprocity of the V2V 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 | ||||||||
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| 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, Engineering and Medicine > Engineering > 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: | March 2021 | ||||||||
| Dates: |
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| Volume: | 70 | ||||||||
| Number: | 3 | ||||||||
| Page Range: | pp. 2310-2321 | ||||||||
| DOI: | 10.1109/TVT.2021.3056638 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Reuse Statement (publisher, data, author rights): | © 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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