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. 20, 2024
Filed:
Jun. 25, 2018
Flytxt B.v., Nieuwegein, NL;
Thijs Veugen, The Hague, NL;
FLYTXT B.V., Nieuwegein, NL;
Abstract
A method for privacy-preserving computation of aggregated private data of a group of client devices comprises: a server selecting at least t devices; being provided with key information including an encryption key e and a decryption key of a homomorphic threshold cryptosystem; obtaining a random value rand being provided with the random values of the other devices in the group; the server transmitting client indices identifying selected devices, and signalling a device for aggregate encrypted data of each of the selected devices; the server receiving randomized encrypted data and an associated decryption share from each selected device, the decryption shares being configured such that decryption key d can be reconstructed on the basis of t decryption shares; and, the server aggregating the received randomized encrypted data of the selected devices using the homomorphic properties and using the decryption shares for decrypting the aggregated randomized encrypted data into cleartext.