Verfahren und Vorrichtung zur Ableitung von geheimen Informationen aus einer Reihe von Reaktionswerten und Verfahren und Vorrichtung zur Bereitstellung von Helferdaten zur Ableitung geheimer Informationen

Details

Veröffentlichungs-Nr.

EP2773061

Aktenzeichen

EP13177328

Anmeldetag

19. Juli 2013

Veröffentlichung

18. November 2015

Erteilung

18. November 2015

Rechtsraum

EP

IPC

H04L9/08G06F7/58H04L9/32

Abstract

A method for providing helper data (130) allowing to derive secret information from a series of response values (110; 302) of a response of a test function, the test function depending on a physical property of an object, comprises providing (102) a predetermined criterion, the predetermined criterion being indicative of a predetermined property of a response value to be used for the deriving of the secret information. The method further comprises determining (104) a first position (114a) of a first response value within the series that ful-fills the predetermined criterion and determining (106) a distance (308) between the first position (114a) and a second position (114b) of a second response value within the series, the second response value being a subsequent response value fulfilling the predetermined criterion after the first response value. The method further comprises storing or outputting (108) information being indicative of the distance as a helper data (130) associated with the second response value.

Anmelder

Firma

Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

Land

🇩🇪 Deutschland

Fachgebiete