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:
Sep. 29, 2020
Filed:
Jan. 30, 2020
Alibaba Group Holding Limited, George Town, KY;
Wenzhen Lin, Hangzhou, CN;
Alibaba Group Holding Limited, George Town, Grand Cayman, KY;
Abstract
A computer-implemented method includes: obtaining, by a data party, a piece of plaintext to be encrypted; generating a ciphertext file including multiple pieces of ciphertext, each piece of ciphertext being derived from a homomorphic encryption algorithm executed on the piece of plaintext; adding a first file identifier of the ciphertext file to a file identifier set corresponding to the piece of plaintext; and in response to a piece of ciphertext derived from the piece of plaintext being needed for a cooperative calculation in which the data party is participating: obtaining the first file identifier from the file identifier set corresponding to the piece of plaintext, reading a first piece of ciphertext from the ciphertext file identified by the first file identifier, and sending the first piece of ciphertext to a partner participating in the cooperative calculation.