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:
Jul. 28, 2026
Filed:
May. 29, 2024
Lemon Inc., Grand Caymon, KY;
Beijing Zitiao Network Technology Co., Ltd., Beijing, CN;
Yongchuan Niu, Beijing, CN;
Chuyuan Chen, Shanghai, CN;
Shengjun Zhong, Shanghai, CN;
Yonghao Yi, Hangzhou, CN;
Brendon Lim Chee How, Singapore, SG;
Li Wang, Hangzhou, CN;
Qiang Yan, Shanghai, CN;
Lemon Inc., Grand Cayman, KY;
Beijing Zitiao Network Technology Co., Ltd., Beijing, CN;
Abstract
The implementations provide a method including: encrypting records on one or more computing devices using a key of the one or more computing devices to generate a first set of encrypted records; preparing a matrix indicating that each of the first set of encrypted records is present on the one or more computing devices; responsive to receiving, from a remote device, a second set of encrypted records encrypted by the second device using a key of the remote device, encrypting the second set of encrypted records using the key of the one or more computing devices; and transmitting the second set of doubly encrypted records, along with the matrix, to the remote device for the remote device to determine, using the matrix, whether at least one of the second set of encrypted records of the second device is included in the first set of encrypted records on the first device.