Title:
BLOCKCHAIN PRIVACY DATA ACCESS CONTROL METHOD AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/226641
Kind Code:
A1
Abstract:
The present invention relates to the technical field of blockchains. Disclosed are a blockchain privacy data access control method and system. According to the present invention, a blockchain system and an attribute-revocable CP-ABE mechanism are combined, a pre-decryption process is introduced, and attributes are revoked in time according to user requirements. According to the present invention, user data privacy is protected while data sharing and fine-grained access are achieved, thereby achieving a balance between data sharing and privacy protection.
Inventors:
QI YONG (CN)
LI JIAN (CN)
LI JIAN (CN)
Application Number:
PCT/CN2023/089634
Publication Date:
November 30, 2023
Filing Date:
April 21, 2023
Export Citation:
Assignee:
UNIV NANJING SCI & TECH (CN)
International Classes:
H04L9/08
Foreign References:
| CN114679271A | 2022-06-28 | |||
| CN114338717A | 2022-04-12 | |||
| CN109559117A | 2019-04-02 | |||
| CN112989378A | 2021-06-18 | |||
| CN113193953A | 2021-07-30 |
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
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