Blockchain-driven authorized data access mechanism for digital healthcare

Chhikara, Deepak; Rana, Saurabh; Mishra, Ankita; Mishra, Dheerendra

doi:10.1016/j.sysarc.2022.102714

Cited by 7 publications

(3 citation statements)

References 14 publications

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“…If the policy decision is satisfied, a token is issued for the user (6), which can be used as a credential for the user's resource access. In the resource request stage, the user continues to submit a resource request (7), and the gateway invokes the smart contract for token decision (8a). The system also invokes the user reputation evaluation module for resource reputation decision (8b).…”

Section: Figure 2: the Process Of Tbac Modelmentioning

confidence: 99%

“…In the token decision of the resource request (5), the User Contract is invoked for the resource reputation decision (6). At the end of the resource request, the user's resource reputation is updated based on the resource request result (7). Similarly, the system makes the low reputation decision and triggers low reputation feedback if the reputation is not satisfied, and the system will limit the validity of the user's token (8).…”

Section: User Reputation Evaluation Modulementioning

confidence: 99%

“…Smart contracts in the blockchain can also automatically process transactions strictly according to the rules. Currently, research combining blockchain with access control systems has covered a wide range of fields such as finance [6], healthcare [7], digital information [8] and IoT, contributing greatly to the improvement of invariance, security, and accountability of access control.…”

Section: Introductionmentioning

confidence: 99%

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Blockchain-Empowered Token-Based Access Control System with User Reputation Evaluation

Yang,

Tu,

Liu

et al. 2023

CMC

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Currently, data security and privacy protection are becoming more and more important. Access control is a method of authorization for users through predefined policies. Token-based access control (TBAC) enhances the manageability of authorization through the token. However, traditional access control policies lack the ability to dynamically adjust based on user access behavior. Incorporating user reputation evaluation into access control can provide valuable feedback to enhance system security and flexibility. As a result, this paper proposes a blockchain-empowered TBAC system and introduces a user reputation evaluation module to provide feedback on access control. The TBAC system divides the access control process into three stages: policy upload, token request, and resource request. The user reputation evaluation module evaluates the user's token reputation and resource reputation for the token request and resource request stages of the TBAC system. The proposed system is implemented using the Hyperledger Fabric blockchain. The TBAC system is evaluated to prove that it has high processing performance. The user reputation evaluation model is proved to be more conservative and sensitive by comparative study with other methods. In addition, the security analysis shows that the TBAC system has a certain anti-attack ability and can maintain stable operation under the Distributed Denial of Service (DDoS) attack environment.

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Section: Figure 2: the Process Of Tbac Modelmentioning

confidence: 99%