Urban pseudonym changing strategy for location privacy in VANETs

Boualouache, Abdelwahab; Moussaoui, Samira

doi:10.1504/ijahuc.2017.080914

Cited by 42 publications

(8 citation statements)

References 36 publications

(35 reference statements)

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“…In this case, building several mixed zones in different parts of the city can solve the issue of privacy. One similar strategy was proposed by [47], called the Urban Pseudonym Strategy (UPCS). This approach produces silent mixed zones (SM) at different signalized intersections in the area.…”

Section: Mixed Group Authenticationmentioning

confidence: 99%

Security Challenges of Location Privacy in VANETs and State-of-the-Art Solutions: A Survey

et al. 2021

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A Vehicular Ad-hoc Network (VANET) comprises a group of moving or stationary vehicles connected by a wireless network. VANETs play a vital role in providing safety and comfort to drivers in vehicular environments. They provide smart traffic control and real-time information, event allocation. VANETs have received attention in support of safe driving, intelligent navigation, emergency and entertainment applications in vehicles. Nevertheless, these increasingly linked vehicles pose a range of new safety and security risks to both the host and its associated properties and may even have fatal consequences. Violations of national privacy and vehicle identities are a major obstacle to introducing forced contact protocols in vehicles. Location privacy refers to the privacy of the vehicle (driver) and the location of the vehicle. Whenever a vehicle sends a message, no one but authorized entities should know their real identity and location of the vehicle. All the messages sent by the vehicle must be authenticated before processing, hence location privacy is an important design aspect to be considered in VANETs operations. The novelty of this paper is that it specifically reviews location privacy in VANETs in terms of operational and safety concerns. Furthermore, it presents a critical analysis of various attacks, identity thefts, manipulation and other techniques in vogue for location privacy protection available in state-of-the-art solutions for VANETs. The efforts in this paper will help researchers to develop a great breadth of understanding pertaining to location privacy issues and various security threats encountered by VANETs and present the critical analysis of the available state-of-the- art solutions to maintain location privacy in VANETs.

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Section: Mixed Group Authenticationmentioning

confidence: 99%

Security Challenges of Location Privacy in VANETs and State-of-the-Art Solutions: A Survey

et al. 2021

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“…However, the scheme creates an extra cost of deployment and suffer from duplicated data. A new concept of creating a silent mix zone is presented in [ 27 , 28 ], where vehicles remain silent and exchanging their pseudonyms under the control of RSU. A distributed pseudonym-changing scheme is proposed in [ 29 ], also based on the construction of a silent mix zone.…”

Section: Related Workmentioning

confidence: 99%

Virtual Pseudonym-Changing and Dynamic Grouping Policy for Privacy Preservation in VANETs

Ullah

Shah

Khan

et al. 2021

Sensors

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Location privacy is a critical problem in the vehicular communication networks. Vehicles broadcast their road status information to other entities in the network through beacon messages to inform other entities in the network. The beacon message content consists of the vehicle ID, speed, direction, position, and other information. An adversary could use vehicle identity and positioning information to determine vehicle driver behavior and identity at different visited location spots. A pseudonym can be used instead of the vehicle ID to help in the vehicle location privacy. These pseudonyms should be changed in appropriate way to produce uncertainty for any adversary attempting to identify a vehicle at different locations. In the existing research literature, pseudonyms are changed during silent mode between neighbors. However, the use of a short silent period and the visibility of pseudonyms of direct neighbors provides a mechanism for an adversary to determine the identity of a target vehicle at specific locations. Moreover, privacy is provided to the driver, only within the RSU range; outside it, there is no privacy protection. In this research, we address the problem of location privacy in a highway scenario, where vehicles are traveling at high speeds with diverse traffic density. We propose a Dynamic Grouping and Virtual Pseudonym-Changing (DGVP) scheme for vehicle location privacy. Dynamic groups are formed based on similar status vehicles and cooperatively change pseudonyms. In the case of low traffic density, we use a virtual pseudonym update process. We formally present the model and specify the scheme through High-Level Petri Nets (HLPN). The simulation results indicate that the proposed method improves the anonymity set size and entropy, provides lower traceability, reduces impact on vehicular network applications, and has lower computation cost compared to existing research work.

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“…We mention as examples of these strategies: (i) Freudiger et al (a) [25], which proposed to install Cryptographic Mix (CMIX) zones on road intersections where all safety messages are encrypted, (ii) Lu et al [15], which proposed to perform PCPs at Social Spots such as signalized intersections and parking lots, and (iii) Boualouache and al. (a) [26], which proposed to stop broadcasting safety messages at signalized intersections only while the traffic light is red. On the other hand, mix-context-based strategies can occur everywhere, and whenever the predefined context is found.…”

Section: A Pseudonym Changing Strategiesmentioning

confidence: 99%

Consortium Blockchain for Cooperative Location Privacy Preservation in 5G-Enabled Vehicular Fog Computing

Boualouache

Sedjelmaci

Engel

2021

IEEE Trans. Veh. Technol.

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Privacy is a key requirement for connected vehicles. Cooperation between vehicles is mandatory for achieving location privacy preservation. However, non-cooperative vehicles can be a big issue to achieve this objective. To this end, we propose a novel monetary incentive scheme for cooperative location privacy preservation in 5G-enabled Vehicular Fog Computing. This scheme leverages a consortium blockchain-enabled fog layer and smart contracts to ensure a trusted and secure cooperative Pseudonym Changing Processes (PCPs). We also propose optimized smart contracts to reduce the monetary costs of vehicles while providing more location privacy preservation. Moreover, a resilient and lightweight Utility-based Delegated Byzantine Fault Tolerance (U-DBFT) consensus protocol is proposed to ensure fast and reliable block mining and validation. The performance analysis shows that our scheme has effective incentive techniques to stimulate non-cooperative vehicles and provides optimal monetary cost management and secure, private, fast validation of blocks.

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Urban pseudonym changing strategy for location privacy in VANETs

Cited by 42 publications

References 36 publications

Security Challenges of Location Privacy in VANETs and State-of-the-Art Solutions: A Survey

Security Challenges of Location Privacy in VANETs and State-of-the-Art Solutions: A Survey

Virtual Pseudonym-Changing and Dynamic Grouping Policy for Privacy Preservation in VANETs

Consortium Blockchain for Cooperative Location Privacy Preservation in 5G-Enabled Vehicular Fog Computing

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