Connected synthetic physically unclonable function

An indirect and direct technology, applied in the direction of reliability improvement of bipolar transistors, reliability improvement modification, instruments, etc., to achieve the effect of high controllability
CN112805767APending Publication Date: 2021-05-14SECURE IC
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Patent Information

Authority / Receiving Office
CN Ā· China
Patent Type
Applications(China)
Current Assignee / Owner
SECURE IC
Publication Date
2021-05-14

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Abstract

There is disclosed a connected synthetic physically unclonable function(acronym CSPUF) made of a circuit configured to receive signals of one or more sensors and / or actuators in / of a computer device; determine one or more statistical properties of the noise distribution of said selected one or more of said sensors and / or actuators; receive data IN from one or more external data sources; determine one or more digital signatures (responses) from said statistical properties and said selected external data. In one embodiment, along a response R when challenged by a challenge C, the circuit is configured to receive data IN and / or to communicate data OUT from one or more external data sources. Developments describe uses and advantages of data IN and data OUT channels, e.g. static or dynamic calibration, options to disable the circuit. Other embodiments consider variants of interconnections of two CSPUF circuits, providing self-cycled, iterative, cascaded and other blockchain arrangements.
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Description

technical field

[0001] The present invention relates generally to physical functions, such as physically unclonable functions (designated hereinafter by the acronym PUF), and in particular to linked synthetic PUFs. Background technique

[0002] Over the past few decades, computer security has become a major challenge. Attacks have become increasingly sophisticated and efficient. At the same time, computer science applications are expanding in scope, for example with the Internet of Things. The use of physical functions to secure computers is known in various technical fields.

[0003] The existing literature on PUFs is emerging, and both the underlying PUF physical phenomena and PUF properties (eg, aging, reliability) have been studied. Several PUF-based implementations have been provided.

[0004] For example, patent document US8694778B2 describes a method using a PUF device that receives a communication comprising a first challenge value, a second challenge value and a...

Claims

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