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. 29, 2019
Filed:
Dec. 27, 2016
Secure-ic Sas, Cesson-Sévigné, FR;
Cédric Murdica, Rennes, FR;
Sylvain Guilley, Paris, FR;
SECURE-IC-SAS, Cesson-Sévigné, FR;
Abstract
There is provided a device or a method for executing an operation of a cryptographic scheme, the operation being applied to a given state of a data block of original data, the operation being defined in a basis ring corresponding to the quotient of a starting ring by a basis ideal generated by at least one element of the starting ring. The operation is executed from a state derived from the current state of the data block, in at least one reference ring, which provides a reference value for each reference ring, each reference ring being the quotient of the starting ring by a reference ideal. The operation is executed from the state derived from the current state of the data block in at least one extended ring corresponding to one or more reference rings, which provides at least one extension value for each extended ring, each extended ring corresponding to one or more reference ring being the quotient of the starting ring by the product of the basis ideal and of the reference ideals of the one or more corresponding reference rings.