Title:
CIPHERTEXT POLICY ATTRIBUTE-BASED ENCRYPTION METHOD AND APPARATUS, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/193309
Kind Code:
A1
Abstract:
The present application provides a ciphertext policy attribute-based encryption method and apparatus, and an electronic device. The method comprises: obtaining an extended target access policy, an original access control structure, and a corresponding original ciphertext; extending the original access control structure according to the target access policy to obtain a target access control structure; generating a target ciphertext component according to the target access control structure and the original ciphertext; and integrating the target ciphertext component and the original ciphertext to obtain a target ciphertext. According to the ciphertext policy attribute-based encryption method provided in the described solution, after the target control access structure is obtained, the target ciphertext component corresponding to the target access structure is generated, and then the target ciphertext is obtained, so that the original ciphertext is converted into the target ciphertext matched with the target access policy, and the policy extension efficiency of a ciphertext policy attribute-based encryption algorithm is improved.
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Inventors:
ZHANG PENG (CN)
LI SHUAIBIN (CN)
LI SHUAIBIN (CN)
Application Number:
PCT/CN2021/081867
Publication Date:
September 22, 2022
Filing Date:
March 19, 2021
Export Citation:
Assignee:
UNIV SHENZHEN (CN)
International Classes:
H04L29/06
Foreign References:
| CN104320393A | 2015-01-28 | |||
| CN109214201A | 2019-01-15 | |||
| CN108156140A | 2018-06-12 | |||
| CN108989339A | 2018-12-11 | |||
| US20110320809A1 | 2011-12-29 |
Attorney, Agent or Firm:
SUNSHINE INTELLECTUAL PROPERTY INTERNATIONAL CO., LTD. (CN)
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