FairAccess2.0: a smart contract-based authorisation framework for enabling granular access control in IoT

Ouaddah, Aafaf; Bellaj, Badr

doi:10.1504/ijics.2021.115346

Cited by 4 publications

(2 citation statements)

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“…Other works have focused on designing novel access control frameworks specifically tailored for smart contracts and blockchain systems. For instance, decentralized access control systems [9] [10] [6], secure data sharing [11], and healthcare applications [12] have been proposed, showcasing the potential of combining access control and blockchain technology.…”

Section: Access Control Framework Using Smart Contractsmentioning

confidence: 99%

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A Transpilation-Based Approach to Writing Secure Access Control Smart Contracts

Bellaj,

Ouaddah,

Crespi

et al. 2023

2023 5th Conference on Blockchain Research &Amp; Applications for Innovative Networks and Services (BRAINS)

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In blockchain space, access control is a crucial aspect of smart contract development, as it guarantees that only authorized users can execute specific functions within a contract. The growing interest in employing smart contracts for access control mechanisms stems from their ability to provide reliable, secure and efficient enforcement of access control policies. However, Solidity, the most popular smart contract language, was not designed explicitly for writing access control policies, unlike specialized languages such as Alfa or XACML. The differences between these languages leads to a difficulty for those who wish to use smart contracts as access control mechanisms but lack the knowledge of Solidity or the ability to evaluate their code's security. To bridge this gap, we introduce ASAC, an Alfa to Solidity transpiler that translates Alfa policies into secure Solidity contracts. Our transpiler leverages the ANTLR (ANother Tool for Language Recognition) parser generator and translate complex Alfa policies into smart contracts. We showcase the effectiveness of our transpiler through a set of case studies and offer an evaluation of its performance.

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Section: Access Control Framework Using Smart Contractsmentioning

confidence: 99%

“…In the past few years, there has been a noticeable increase in attention towards implementing access control systems similar to XACML or Alfa in blockchain technology [6] [7] [8]. Alfa provides a declarative language for expressing access control policies in a natural language-like syntax, making it easier to write and maintain policies.…”

Section: Introductionmentioning

confidence: 99%