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. 04, 2026
Filed:
Oct. 31, 2023
Lemon Inc., Grand Cayman, KY;
Yongjun Zhao, Beijing, CN;
Wei Dai, Culver City, CA (US);
Donghang Lu, Culver City, CA (US);
Qiang Yan, Beijing, CN;
Lemon Inc., Grand Cayman, KY;
Abstract
Methods and systems for data security are provided. The method includes generating respective tags for data segments in a dataset, deriving respective temporal keys associated with the respective tags for the plurality of data segments from a master key, and transforming the plurality of data segments from a plaintext to a ciphertext using the respective temporal keys as a first input and the respective tags as a second input, while format-preserving the data segments. The master key can be updated to prevent from reverse-transforming a selected data segment in the dataset from the ciphertext to the plaintext.