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. 08, 2019
Filed:
Feb. 23, 2017
Applicant:
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Inventors:
Olivier Savry, Sassenage, FR;
Thomas Hiscock, Grenoble, FR;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01); G06F 21/72 (2013.01);
U.S. Cl.
CPC ...
H04L 9/008 (2013.01); G06F 21/72 (2013.01); H04L 2209/12 (2013.01);
Abstract
A method of executing a program operating on data encrypted by a homomorphic encryption. Execution of a program instruction includes the homomorphic evaluation of an associated function in the ciphertext space, homomorphic masking of the result of the evaluation with a previously encrypted random sequence, decryption of the evaluation result thus masked followed by a new encryption and then homomorphic unmasking in the ciphertext space. The result of execution of the instruction does not appear in plain text at any time during execution of the instruction.