Patent · US Active

Hierarchization of cryptographic keys in an electronic circuit

US10158482B2 · kind B2 · utility

0Cited by

6References

28Claims

0Family size

Assignee

PROTON WORLD INTERNATIONAL N.V. · BE

Inventors

Jean-Louis Modave · Ottignies, BE
Thierry Huque · Grand-Rosière-Hottomont, BE

Key dates

Filing date	Sep 8, 2014
Grant date	Dec 18, 2018
Priority date	—
Expiry date	Jan 27, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/24
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method of obtaining, in an electronic circuit, at least one first key intended to be used in a cryptographic mechanism, on the basis of at least one second key contained in the same circuit, the first key being stored in at least one first storage element of the circuit, the first storage element being reinitialized automatically after a duration independent of the fact that the circuit is or is not powered. Also described are applications of this method to encrypted transmissions, usage controls, as well as an electronic circuit implementing these methods.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.