Netinfo Security ›› 2021, Vol. 21 ›› Issue (3): 7-8.doi: 10.3969/j.issn.1671-1122.2021.03.002

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A Trusted Data Access Control Scheme Combining Attribute-based Encryption and Blockchain

LU Xiaofeng(), FU Songbing   

  1. School of Cyberspace Security, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2021-01-06 Online:2021-03-10 Published:2021-03-16
  • Contact: LU Xiaofeng E-mail:luxf@bupt.edu.cn

Abstract:

The traditional way of data storage often adopts centralized architecture, which is prone to trust and security problems. This paper proposes a data access control scheme combining attribute-based encryption and blockchain, which combines symmetric encryption algorithm and attribute-based encryption algorithm to realize the fine-grained access control of data owners and protect the privacy protection rights of data owners. At the same time, this paper combines the blockchain technology with distributed storage, and only stores the hash value of the data and the hash value of the ciphertext location, access control policy and other information on the blockchain, which solves the storage bottleneck of blockchain system. Experiments show that the scheme can effectively protect the security and privacy of data owners, and realize the secure sharing of data.

Key words: data sharing, blockchain, access control, attribute-based encryption, distributed storage

CLC Number: