DERIVING A DEVICE UNIQUE ENCRYPTION KEY OF A SYSTEM ON CHIP USING A PHYSICAL UNCLONABLE FUNCTION

摘要

Deriving a device unique encryption key of a system on chip using a physical unclonable function;Method implemented in a computer system for deriving a device unique encryption key of a system on chip using a physical unclonable function, the method including .the following steps- challenging the physical unclonable function during the enrolment phase,- error correcting the response of the physical unclonable function,- generating helper data (H-D) by using the corrected response of the physical unclonable function and a manufacturer's encryption key (OR-K),- generating a reconstructed encryption key (REC-K) by using the helper data (H-D),- feeding the corrected response of the physical unclonable function to the enrolment module (ENR),- generating helper data (H-D) in the enrolment module (ENR) by using the corrected response of the physical unclonable function and the said manufacturer's key (OR-K),- storing the helper data (H-D) and keeping the enrolment module enabled after first enrolment.