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. 25, 2020
Filed:
Sep. 01, 2016
Applicant:
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Inventors:
Renaud Sirdey, Cernay-la-Ville, FR;
Oana Stan, Massy, FR;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 17/16 (2006.01); G06Q 10/04 (2012.01); G01C 21/34 (2006.01); G06F 16/9537 (2019.01); H04L 9/00 (2006.01); G09C 1/00 (2006.01);
U.S. Cl.
CPC ...
G06F 16/9537 (2019.01); G01C 21/343 (2013.01); G01C 21/3476 (2013.01); G06F 17/16 (2013.01); G06Q 10/047 (2013.01); G09C 1/00 (2013.01); H04L 9/008 (2013.01); H04L 2209/42 (2013.01);
Abstract
A method allowing a user confidentially to query a server including a database. The user builds, from an index of a desired entry, a vector encrypted by a homomorphic probabilistic cryptosystem, and transmits a request having the vector as an argument to the server. The server performs a scalar product between the vector of entries of the database and returns the result to the user. The user decrypts the scalar product to obtain the desired entry. The method can be used for example for querying a location-based service and for navigation by concealed routes.