RBAC-HDE: On the Design of a Role-based Access Control with Smart Contract for Healthcare Data Exchange

2019 ◽  
Author(s):  
Raifa Akkaoui ◽  
Xiaojun Hei ◽  
Charles Guo ◽  
Wenqing Cheng
Keyword(s):  
Access Control ◽  
Data Exchange ◽  
Role Based Access Control ◽  
Healthcare Data ◽  
Smart Contract ◽  
Role Based

scholarly journals An ECDSA Approach to Access Control in Knowledge Management Systems Using Blockchain

Information ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 111 ◽  
Author(s):  
Gabriel Nyame ◽  
Zhiguang Qin ◽  
Kwame Opuni-Boachie Obour Agyekum ◽  
Emmanuel Boateng Sifah
Keyword(s):  
Knowledge Management ◽  
Access Control ◽  
User Authentication ◽  
Knowledge Management System ◽  
System Model ◽  
Management Systems ◽  
Role Based Access Control ◽  
Blockchain Technology ◽  
Smart Contract ◽  
Role Based

Access control has become problematic in several organizations because of the difficulty in establishing security and preventing malicious users from mimicking roles. Moreover, there is no flexibility among users in the participation in their roles, and even controlling them. Several role-based access control (RBAC) mechanisms have been proposed to alleviate these problems, but the security has not been fully realized. In this work, however, we present an RBAC model based on blockchain technology to enhance user authentication before knowledge is accessed and utilized in a knowledge management system (KMS). Our blockchain-based system model and the smart contract ensure that transparency and knowledge resource immutability are achieved. We also present smart contract algorithms and discussions about the model. As an essential part of RBAC model applied to KMS environment, trust is ensured in the network. Evaluation results show that our system is efficient.

scholarly journals BlendCAC: A Smart Contract Enabled Decentralized Capability-Based Access Control Mechanism for the IoT

Computers ◽  
2018 ◽  
Vol 7 (3) ◽  
pp. 39 ◽  
Author(s):  
Ronghua Xu ◽  
Yu Chen ◽  
Erik Blasch ◽  
Genshe Chen
Keyword(s):  
Access Control ◽  
Large Scale ◽  
Smart Cities ◽  
Single Point ◽  
Raspberry Pi ◽  
Role Based Access Control ◽  
Privacy And Security ◽  
Smart Contract ◽  
Attribute Based Access Control ◽  
Role Based

While Internet of Things (IoT) technology has been widely recognized as an essential part of Smart Cities, it also brings new challenges in terms of privacy and security. Access control (AC) is among the top security concerns, which is critical in resource and information protection over IoT devices. Traditional access control approaches, like Access Control Lists (ACL), Role-based Access Control (RBAC) and Attribute-based Access Control (ABAC), are not able to provide a scalable, manageable and efficient mechanism to meet the requirements of IoT systems. Another weakness in today’s AC is the centralized authorization server, which can cause a performance bottleneck or be the single point of failure. Inspired by the smart contract on top of a blockchain protocol, this paper proposes BlendCAC, which is a decentralized, federated capability-based AC mechanism to enable effective protection for devices, services and information in large-scale IoT systems. A federated capability-based delegation model (FCDM) is introduced to support hierarchical and multi-hop delegation. The mechanism for delegate authorization and revocation is explored. A robust identity-based capability token management strategy is proposed, which takes advantage of the smart contract for registration, propagation, and revocation of the access authorization. A proof-of-concept prototype has been implemented on both resources-constrained devices (i.e., Raspberry PI nodes) and more powerful computing devices (i.e., laptops) and tested on a local private blockchain network. The experimental results demonstrate the feasibility of the BlendCAC to offer a decentralized, scalable, lightweight and fine-grained AC solution for IoT systems.

scholarly journals RBAC-SC: Role-Based Access Control Using Smart Contract

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 12240-12251 ◽  
Author(s):  
Jason Paul Cruz ◽  
Yuichi Kaji ◽  
Naoto Yanai
Keyword(s):  
Access Control ◽  
Role Based Access Control ◽  
Smart Contract ◽  
Role Based

scholarly journals BlendCAC: A Smart Contract Enabled Decentralized Capability-Based Access Control Mechanism for IoT

2018 ◽  
Author(s):  
Ronghua Xu ◽  
Yu Chen ◽  
Erik Blasch ◽  
Genshe Chen
Keyword(s):  
Access Control ◽  
Large Scale ◽  
Smart Cities ◽  
Single Point ◽  
Raspberry Pi ◽  
Role Based Access Control ◽  
Privacy And Security ◽  
Smart Contract ◽  
Attribute Based Access Control ◽  
Role Based

While the Internet of Things (IoT) technology has been widely recognized as the essential part of Smart Cities, it also brings new challenges in terms of privacy and security. Access control (AC) is among the top security concerns, which is critical in resource and information protection over IoT devices. Traditional access control approaches, like Access Control Lists (ACL), Role-based Access Control (RBAC) and Attribute-based Access Control (ABAC), are not able to provide a scalable, manageable and efficient mechanism to meet the requirements of IoT systems. Another weakness in today's AC is the centralized authorization server, which can be the performance bottleneck or the single point of failure. Inspired by the smart contract on top of a blockchain protocol, this paper proposes BlendCAC, which is a decentralized, federated capability-based AC mechanism to enable an effective protection for devices, services and information in large scale IoT systems. A federated capability-based delegation model (FCDM) is introduced to support hierarchical and multi-hop delegation. The mechanism for delegate authorization and revocation is explored. A robust identity-based capability token management strategy is proposed, which takes advantage of the smart contract for registering, propagating and revocating of the access authorization. A proof-of-concept prototype has been implemented on both resources-constrained devices (i.e., Raspberry PI node) and more powerful computing devices (i.e., laptops), and tested on a local private blockchain network. The experimental results demonstrate the feasibility of the BlendCAC to offer a decentralized, scalable, lightweight and fine-grained AC solution for IoT systems.

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