Patent · US Active

Method of key derivation in an integrated circuit

US8964975B2 · kind B2 · utility

1Cited by

4References

22Claims

0Family size

Assignee

PROTON WORLD INTERNATIONAL N.V. · BE

Inventors

Joan Daemen · Overpelt, BE
Jean-Louis Modave · Ottignies, BE
Michel Dawirs · Wezembeek, BE

Key dates

Filing date	Sep 13, 2012
Grant date	Feb 24, 2015
Priority date	—
Expiry date	Sep 13, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/12
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method of derivation, by an electronic circuit, of a first key from a second key, wherein: at least one third key is derived from the second key and is used to derive the first key; and a value of a counter, representative of the number of first keys, conditions the derivation of a new value of the third key.

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