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:
Oct. 26, 2021
Filed:
Jul. 31, 2020
Advanced New Technologies Co., Ltd., George Town, KY;
Shuai Han, Hangzhou, CN;
Zhangjie Huang, Hangzhou, CN;
Huanyu Ma, Hangzhou, CN;
Hao Lei, Hangzhou, CN;
Advanced New Technologies Co., Ltd., Grand Cayman, KY;
Abstract
A computer-implemented method, non-transitory, computer-readable medium, and computer-implemented system are provided for implementing privacy protection. In an implementation, a public key pk={N, h} corresponding to a target user is obtained, where h is a generator of a predetermined cyclic group with a size of k in a random number space Z*, a length of k is i bits, a length of N is n bits, and i<<n. A random number r is selected, so that hbelongs to the predetermined cyclic group. To-be-encrypted data m, corresponding to the target user using the public key pk and the random number r, is processed to generate a homomorphic ciphertext c=(1+N)·(hmod N)mod N. The homomorphic ciphertext c is provided to the target user, where the homomorphic ciphertext c can be decrypted using a private key sk to obtain the data m.