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:
Nov. 26, 2013
Filed:
Nov. 29, 2011
Michael Adjedj, Bonneuil-sur-Marne, FR;
Michael Adjedj, Bonneuil-sur-Marne, FR;
Logiways France, Paris, FR;
Abstract
The method for protecting a cryptography circuit from attacks aiming to discover a secret datum (D, K) used during execution by the circuit of a cryptography algorithm comprising the application () of at least one cryptographic operation (O) to the data (D), said data belonging to a first mathematical structure (E) having at least one group structure and provided with at least one binary operation, is characterized in that it comprises a step (OP) for protecting said cryptographic operation, comprising applying () to said data (D) at least one first reversible homomorphism (M), compatible with said binary operation, before applying () said cryptographic operation (O), and applying () at least one second hornornorphisrn (M), opposite the first homomorphism (M), after applying said cryptographic operation (O).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile