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1. (WO2017167465) METHOD FOR GENERATING A CRYPTOGRAPHIC KEY, DEVICE, AND ELECTRICAL SYSTEM

Pub. No.:    WO/2017/167465    International Application No.:    PCT/EP2017/051646
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Fri Jan 27 00:59:59 CET 2017
IPC: H04L 9/08
Applicants: ROBERT BOSCH GMBH
Inventors: WILLERS, Oliver
Title: METHOD FOR GENERATING A CRYPTOGRAPHIC KEY, DEVICE, AND ELECTRICAL SYSTEM
Abstract:
The invention relates a method for generating a cryptographic key (7, 18-20) from one measurement value (4, 5, 15-17) for each of a number of types of measurement data of an electrical component (3, 12-14), comprising the following steps: determining the global distributions (30) for each of the types of measurement data for the electrical component (3, 12-14), calculating sections (32-39) of the global distributions (30) in such a way that the probabilities of occurrence for measurement values (4, 5, 15-17) in the individual sections (32-39) are constant, and generating the cryptographic key (7, 18-20) on the basis of the measurement values (4, 5, 15-17) of the electrical component (3, 12-14) and the sections (32-39) corresponding to respective measurement values (4, 5, 15-17). The invention further relates to a corresponding device and to a corresponding electrical system.