Details

Autor(en) / Beteiligte

• Wang, Ruimiao
• Wang, Xiaodong
• Yang, Wenti
• Yuan, Shuai
• Guan, Zhitao

Titel

Achieving fine-grained and flexible access control on blockchain-based data sharing for the Internet of Things

Ist Teil von

• China communications, 2022-06, Vol.19 (6), p.22-34

Ort / Verlag

China Institute of Communications

Erscheinungsjahr

2022

Quelle

IEEE Xplore

Beschreibungen/Notizen

• The traditional centralized data sharing systems have potential risks such as single point of failures and excessive working load on the central node. As a distributed and collaborative alternative, approaches based upon blockchain have been explored recently for Internet of Things (IoTs). However, the access from a legitimate user may be denied without the pre-defined policy and data update on the blockchain could be costly to the owners. In this paper, we first address these issues by incorporating the Accountable Subgroup Multi-Signature (ASM) algorithm into the Attribute-based Access Control (ABAC) method with Policy Smart Contract, to provide a finegrained and flexible solution. Next, we propose a policy-based Chameleon Hash algorithm that allows the data to be updated in a reliable and convenient way by the authorized users. Finally, we evaluate our work by comparing its performance with the benchmarks. The results demonstrate significant improvement on the effectiveness and efficiency.