Patent · US Active

Reverse computational fuzzy extractor and method for authentication

US11165594B2 · kind B2 · utility

0Cited by

0References

20Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Jorge Guajardo Merchan · Pittsburgh, US
Paulius Duplys · Aichholzhof, DE
Christopher Huth · Weil der Stadt, DE

Key dates

Filing date	Dec 27, 2017
Grant date	Nov 2, 2021
Priority date	—
Expiry date	Oct 9, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/34
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method and system for authenticating a first device is disclosed. The method includes the steps of: measuring a first response bit string of a physical unclonable function of the first device with respect to a challenge bit string, the physical unclonable function being provided by one of the processor of the first device and a further physical component of the first device; deriving a shared secret bit string from a uniformly distributed random vector; encoding a helper bit string by multiplying a uniformly distributed random matrix with the uniformly distributed random vector and adding the first response bit string to a result of the multiplication; and transmitting the helper bit string to a second device that is remote from the first device.

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