TIIS (한국인터넷정보학회)
Current Result Document :
| 한글제목(Korean Title) |
BDSS: Blockchain-based Data Sharing Scheme With Fine-grained Access Control And Permission Revocation In Medical Environment |
| 영문제목(English Title) |
BDSS: Blockchain-based Data Sharing Scheme With Fine-grained Access Control And Permission Revocation In Medical Environment |
| 저자(Author) |
Lejun Zhang
Yanfei Zou
Muhammad Hassam Yousuf
Weizheng Wang
Zilong Jin
Yansen Su
Kim Seokhoon
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| 원문수록처(Citation) |
VOL 16 NO. 05 PP. 1634 ~ 1652 (2022. 05) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
Due to the increasing need for data sharing in the age of big data, how to achieve data access control and implement user permission revocation in the blockchain environment becomes an urgent problem. To solve the above problems, we propose a novel blockchain-based data sharing scheme (BDSS) with fine-grained access control and permission revocation in this paper, which regards the medical environment as the application scenario. In this scheme, we separate the public part and private part of the electronic medical record (EMR). Then, we use symmetric searchable encryption (SSE) technology to encrypt these two parts separately, and use attribute-based encryption (ABE) technology to encrypt symmetric keys which used in SSE technology separately. This guarantees better fine-grained access control and makes patients to share data at ease. In addition, we design a mechanism for EMR permission grant and revocation so that hospital can verify attribute set to determine whether to grant and revoke access permission through blockchain, so it is no longer necessary for ciphertext re-encryption and key update. Finally, security analysis, security proof and performance evaluation demonstrate that the proposed scheme is safe and effective in practical applications.
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| 키워드(Keyword) |
data sharing
blockchain
access control
permission revocation
medical environment
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| 파일첨부 |
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