Journal of System Simulation ›› 2020, Vol. 32 ›› Issue (6): 1009-1020.doi: 10.16182/j.issn1004731x.joss.18-0658

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Attribute Proxy Re-encryption for Ciphertext Storage Sharing Scheme on Blockchain

Zhang Xiaohong1, Sun Lanlan1,2   

  1. 1. School of Information Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China;
    2. Henan University Minsheng College, Kaifeng 475001, China
  • Received:2018-10-03 Revised:2018-11-22 Online:2020-06-25 Published:2020-06-25

Abstract: In order to implement the information storage sharing service safely and efficiently, a blockchain storage sharing scheme supporting the attribute proxy re-encryption and keyword retrieval is proposed. By the nodes classification and ciphertext storage separation, the anti-collusion attack is better implemented. The smart contract design of the information transaction is introduced and the information sharing parties can communicate spontaneously without the participation of the central organization. By the attribute-based proxy re-encryption algorithm, the information owner can share the information with other users without re-encrypting, uploading, and downloading information, and relieves the burden of the high-frequency access of the cloud to some extent. Comparing with the other schemes, the scheme is more secure and efficient.

Key words: attribute-based proxy re-encryption, blockchain, anti-collusion attack, smart contract

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