Evaluation of Privacy-ABC Technologies - a Study on the Computational Efficiency

Veseli, Fatbardh; Serna, José Antonio de la O

doi:10.1007/978-3-319-41354-9_5

Cited by 5 publications

(3 citation statements)

References 21 publications

(29 reference statements)

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“…However, our model could be extended to include a separate entity or entities such as, inspector which can be responsible for de-anonymizing vehicles instead of the CA. The inspection key could be divided between multiple organizations where at least two of them need to come together to join their key parts and perform inspection [28]. The system could also be extended to give provers the ability to prove possession of a known certified attribute and the ability to share that attribute.…”

Section: Discussionmentioning

confidence: 99%

Non-Interactive Privacy-Preserving Sybil-Free Authentication Scheme in VANETs

Akil¹,

Martucci²,

Hoepman³

2023

Proceedings Inaugural International Symposium on Vehicle Security &Amp; Privacy

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In vehicular ad hoc networks (VANETs), vehicles exchange messages to improve traffic and passengers' safety. In VANETs, (passive) adversaries can track vehicles (and their drivers) by analyzing the data exchanged in the network. The use of privacy-enhancing technologies can prevent vehicle tracking but solutions so far proposed either require an intermittent connection to a fixed infrastructure or allow vehicles to generate concurrent pseudonyms which could lead to identity-based (Sybil) attacks. In this paper, we propose an anonymous authentication scheme that does not require a connection to a fixed infrastructure during operation and is not vulnerable to Sybil attacks. Our scheme is built on attribute-based credentials and short lived pseudonyms. In it, vehicles interact with a central authority only once, for registering themselves, and then generate their own pseudonyms without interacting with other devices, or relying on a central authority or a trusted third party. The pseudonyms are periodically refreshed, following system wide epochs.

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Section: Discussionmentioning

confidence: 99%

Non-Interactive Privacy-Preserving Sybil-Free Authentication Scheme in VANETs

Akil¹,

Martucci²,

Hoepman³

2023

Proceedings Inaugural International Symposium on Vehicle Security &Amp; Privacy

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“…On a theoretical level, authors of [15], [16] have addressed the importance of computational efficiency in resource-constrained devices. Fatbardh et al [17] have evaluated the computational efficiency of Idemix and U-prove. Their results shown that U-prove is more efficient than Idemix for the User operation (proving) and in general when a credential has more attributes.…”

Section: Related Workmentioning

confidence: 99%

I2PA, U-prove, and Idemix: An Evaluation of Memory Usage and Computing Time Efficiency in an IoT Context

Sene

Ciss

Niang

2020

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

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The Internet of Things (IoT), in spite of its innumerable advantages, brings many challenges namely issues about users' privacy preservation and constraints about lightweight cryptography. Lightweight cryptography is of capital importance since IoT devices are qualified to be resource-constrained. To address these challenges, several Attribute-Based Credentials (ABC) schemes have been designed including I2PA, U-prove, and Idemix. Even though these schemes have very strong cryptographic bases, their performance in resource-constrained devices is a question that deserves special attention. Therefor, this paper aims to conduct a performance evaluation of these schemes on issuance and verification protocols regarding memory usage and computing time. Recorded results show that both I2PA and Uprove present very interesting results regarding memory usage and computing time while Idemix presents very low performance with regard to computing time compared to I2PA and U-prove.

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“…More specifically, at the heart of P4G2Go lies the Idemix anonymous credential system that enables selective disclosure of attributes that prove that an energy consumer (i.e., the tenant) is legitimate without however disclosing their real identity to untrusted utilities. Idemix provides unlinkability of charging sessions and energy consumption by roaming consumers [13,14], regardless of the number of times the same credential has been used for verification. This is of paramount importance as colluding utilities can try to track the trajectory of roaming consumers as they move from one place to another.…”

Section: Introductionmentioning

confidence: 99%

P4G2Go: A Privacy-Preserving Scheme for Roaming Energy Consumers of the Smart Grid-to-Go

Farao

Veroni

Ntantogian

et al. 2021

Sensors

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Due to its flexibility in terms of charging and billing, the smart grid is an enabler of many innovative energy consumption scenarios. One such example is when a landlord rents their property for a specific period to tenants. Then the electricity bill could be redirected from the landlord’s utility to the tenant’s utility. This novel scenario of the smart grid ecosystem, defined in this paper as Grid-to-Go (G2Go), promotes a green economy and can drive rent reductions. However, it also creates critical privacy issues, since utilities may be able to track the tenant’s activities. This paper presents P4G2Go, a novel privacy-preserving scheme that provides strong security and privacy assertions for roaming consumers against honest but curious entities of the smart grid. At the heart of P4G2Go lies the Idemix cryptographic protocol suite, which utilizes anonymous credentials and provides unlinkability of the consumer activities. Our scheme is complemented by the MASKER protocol, used to protect the consumption readings, and the FIDO2 protocol for strong and passwordless authentication. We have implemented the main components of P4G2Go, to quantitatively assess its performance. Finally, we reason about its security and privacy properties, proving that P4G2Go achieves to fulfill the relevant objectives.

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Evaluation of Privacy-ABC Technologies - a Study on the Computational Efficiency

Cited by 5 publications

References 21 publications

Non-Interactive Privacy-Preserving Sybil-Free Authentication Scheme in VANETs

Non-Interactive Privacy-Preserving Sybil-Free Authentication Scheme in VANETs

I2PA, U-prove, and Idemix: An Evaluation of Memory Usage and Computing Time Efficiency in an IoT Context

P4G2Go: A Privacy-Preserving Scheme for Roaming Energy Consumers of the Smart Grid-to-Go

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