Access Control for Distributed Ledgers in the Internet of Things: A Networking Approach

Cullen, Andrew; Ferraro, Pietro; Sanders, William H.; Vigneri, Luigi; Shorten, Robert

doi:10.48550/arxiv.2005.07778

Cited by 2 publications

(25 citation statements)

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“…Specifically, the NANO ledger was subjected to attacks that could have been prevented by incorporating an appropriately designed access control mechanism 4 . Indeed, the motivation for this present paper is the proposed IOTA access control algorithm [10] and the need to make this module robust against certain types of adversarial attacks. In terms of connection to traditional networking work, our work builds heavily on some of the most mature work in this area, with the caveat that algorithm design is revisited from the perspective of operation in adversarial environments, That said, much of the work reported in this paper builds on traditional scheduling algorithms such as Defecit Round Robin (DRR), and flow based access control, such as the Additive-Increase Multiplicative-Decrease (AIMD) algorithm [37].…”

Section: Comments On Prior Workmentioning

confidence: 99%

“…In line with [10], we describe here the main components of the protocol (more information can be found later in the section).…”

Section: B Dag-based Dltmentioning

confidence: 99%

“…Our objective here is to address this issue. We focus on the IOTA Tangle and its recently proposed reputation-based 2 access control algorithm [10]. However, our analysis can be applied to any distributed network that seeks to guarantee fair access and consistent databases across the network participants in an adversarial environment.…”

Section: Introductionmentioning

confidence: 99%

“…• We analyse the security of [10] against more advanced attacks than considered in the original work, e.g., nodes send different streams of transactions to different neighbours to harm consistency.…”

Section: Introductionmentioning

confidence: 99%

“…In Section IV, a node model for our access control mechanism and definitions needed in this paper are provided. In Section V, we review the access control protocol described in [10], highlight vulnerabilities, and suggest modifications to suppress these vulnerabilities. Section VI presents simulations to illustrate the efficacy of our approach.…”

Section: Introductionmentioning

confidence: 99%

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Secure Access Control for DAG-based Distributed Ledgers

Zhao

Vigneri²,

Cullen

et al. 2021

Preprint

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Access control is a fundamental component of the design of distributed ledgers, influencing many aspects of their design, such as fairness, efficiency, traditional notions of network security, and adversarial attacks such as Denial-of-Service (DoS) attacks 1 . In this work, we consider the security of a recently proposed access control protocol for Directed Acyclic Graph-based distributed ledgers. We present a number of attack scenarios and potential vulnerabilities of the protocol and introduce a number of additional features which enhance its resilience. Specifically, a blacklisting algorithm, which is based on a reputation-weighted threshold, is introduced to handle both spamming and multirate malicious attackers. The introduction of a solidification request component is also introduced to ensure the fairness and consistency of network in the presence of attacks. Finally, a timestamp component is also introduced to maintain the consistency of the network in the presence of multi-rate attackers. Simulations to illustrate the efficacy and robustness of the revised protocol are also described.

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Section: Comments On Prior Workmentioning

confidence: 99%

“…In line with [10], we describe here the main components of the protocol (more information can be found later in the section).…”

Section: B Dag-based Dltmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Secure Access Control for DAG-based Distributed Ledgers

Zhao

Vigneri²,

Cullen

et al. 2021

Preprint

Self Cite

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Healthor: Heterogeneity-aware Flow Control in DLTs to Increase Performance and Decentralization

Theis¹,

Vigneri²,

Wang

et al. 2022

Distrib. Ledger Technol.

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Permissionless reputation-based distributed ledger technologies (DLTs) have been proposed to overcome blockchains’ shortcomings in terms of performance and scalability, and to enable feeless messages to power the machine-to-machine economy. These DLTs allow machines with widely heterogeneous capabilities to actively participate in message generation and consensus. However, the open nature of such DLTs can lead to the centralization of decision-making power, thus defeating the purpose of building a decentralized network. In this article, we introduce Healthor, a novel heterogeneity-aware flow-control mechanism for permissionless reputation-based DLTs. Healthor formalizes node heterogeneity by defining a health value as a function of its incoming message queue occupancy. We show that health signals can be used effectively by neighboring nodes to dynamically flow control messages while maintaining high decentralization. We perform extensive simulations, and show a 23% increase in throughput, a 76% decrease in latency and four times increased node participation in consensus compared to state-of-the-art. To the best of our knowledge, Healthor is the first system to systematically explore the ramifications of heterogeneity on DLTs and proposes a dynamic, heterogeneity-aware flow control. Healthor’s source code ( https://github.com/jonastheis/healthor ) and simulation result data set ( https://zenodo.org/record/4573698 ) are both publicly available.

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Access Control for Distributed Ledgers in the Internet of Things: A Networking Approach

Cited by 2 publications

References 0 publications

Secure Access Control for DAG-based Distributed Ledgers

Secure Access Control for DAG-based Distributed Ledgers

Healthor: Heterogeneity-aware Flow Control in DLTs to Increase Performance and Decentralization

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