The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 2025
Filed:
May. 11, 2023
Hangzhou City University, Hangzhou, CN;
Song Han, Hangzhou, CN;
Yuxuan Fang, Hangzhou, CN;
Siqi Ren, Hangzhou, CN;
Xuanxuan Xu, Hangzhou, CN;
Hangzhou City University, Hangzhou, CN;
Abstract
A dynamic and verifiable searchable encryption method based on updatable encryption and blockchain and a system thereof are provided. The method is suitable for the real scene where the data user and the data owner are not the same party. The method adopts the updatable technology to update the secret key in the searchable encryption, and the security of the key update could achieve Chosen Ciphertext Security (CCA) and Ciphertext Integrity (CTXT) security. In addition, the method is used to judge whether the cloud server is 'trustworthy' by verifying the search results publicly based on the blockchain. Therefore, the verifiable dynamic searchable encryption method based on updatable encryption and blockchain has been greatly improved in terms of practicability and security.