We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
基于访问控制的可验证医疗区块链数据搜索机制.
- Authors
甘臣权; 杨宏鹏; 祝清意; 贾家庆; 李昆鸿
- Abstract
Since the data on the medical blockchain is randomly stored in each block, users generally need to traverse all blocks on the chain one by one in order when searching for data, resulting in low search efficiency, single-condition query, and the inability to distinguish the data access rights of different types of users. To this end, a verifiable medical blockchain data search mechanism with access control is proposed, which builds corresponding indexes for all transaction data on the medical blockchain and stores them in the designed nonrelational database, and uses the efficient query function of the database to improve the search efficiency of data on the medical blockchain and realize multi-condition query. This can effectively reduce the probability of traversing the whole chain during actual search. Considering the security and accuracy of data sharing, user access control strategy and data verifiability mechanism are designed to ensure the legitimacy and accuracy of user access to medical blockchain data. The experimental results on Ethereum, nonrelational database MongoDB and real public medical data show that the proposed verifiable search mechanism can improve the search efficiency of medical blockchain data, while ensuring the security and accuracy of the data.
- Subjects
NONRELATIONAL databases; ACCESS control; BLOCKCHAINS
- Publication
Journal of Chongqing University of Posts & Telecommunications (Natural Science Edition), 2023, Vol 35, Issue 5, p873
- ISSN
1673-825X
- Publication type
Article
- DOI
10.3979/j.issn.1673-825X.202206270158