Derivation of a Device-Specific Value

摘要

A method and an apparatus for deriving a device-specific value from a physical unclonable function realized on a circuit unit are provided. Response values from a physical unclonable function (PUF) are categorized with respect to a statistical property, such as a bit error characteristic, and the device-specific value is derived therefrom.

主权项

1. A method for deriving a device-specific value from a physical unclonable function realized on a circuit unit, the method comprising:
applying an identical challenge to the physical unclonable function of the circuit unit at least twice in order to produce at least two responses; deriving, by a processor, a categorization information item associated with the identical challenge from a statistical property of the at least two responses; and producing the device-specific value from the categorization information item.