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System and method for generating secret information using high reliability physically unclonable function

A technology of secret information and reliability, which is applied in digital transmission systems, transmission systems, secure communication devices, etc., and can solve problems such as incompatible complexity levels and adding low-code devices

Active Publication Date: 2018-07-03
SECURE IC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Current error correction techniques used in PUFs add a level of complexity that is incompatible with low-code devices

Method used

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  • System and method for generating secret information using high reliability physically unclonable function
  • System and method for generating secret information using high reliability physically unclonable function
  • System and method for generating secret information using high reliability physically unclonable function

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Embodiment Construction

[0085] Embodiments of the present invention provide an electronic system for generating secret information comprising a physically unclonable function (PUF) circuit configured to provide a physical The difference between two values ​​of a variable, the system is configured to apply a set of challenges during the enrollment phase and measure the difference in the physical variable provided by the PUF in response to each challenge.

[0086]The system may include a helper data generator configured to generate helper data comprising a set of bits, the bits of helper data being generated in association with each applied challenge. The helper data generator may be configured to generate each helper data bit based on a physical variable difference provided by the PUF in response to application of the associated challenge.

[0087] In one embodiment, the system may include a secret generator for extracting the secret from the helper data.

[0088] In one embodiment, the system may in...

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PUM

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Abstract

Embodiments of the invention provide an electronic system for generating secret information comprising a physically unclonable function (PUF) circuit, and the PUF circuit is configured to provide a difference between two values of a physical variable of the PUF in response to a challenge applied to the PUF circuit. The system is configured to apply a set of challenges during an enrolment phase, and measure the physical variable difference provided by the PUF in response to each challenge. The system further comprises: a helper data generator (2) configured to generate helper data comprising aset of bits, a bit of the helper data is generated in association with each applied challenge, the helper data generator is configured to generate each helper data bit from the physical variable difference provided by the PUF in response to the application of the associated challenge, and the system further comprises a secret information generator (3) for extracting secret information from the helper data.

Description

technical field [0001] The present invention relates generally to the field of data and device security, and in particular to methods and devices for generating secret information from physically unclonable functions (PUFs). Background technique [0002] PUFs are increasingly used in many electronic devices that contain secret data, to enhance security and to make such devices resistant to attacks on the device. Different types of attacks can be directed externally at electronic devices in an attempt to access such data, such as side-channel attacks, electromigration (such as power consumption, electromagnetic radiation, duration of operation, etc.), imaging, fault injection, etc. [0003] PUFs are used in many applications such as identification, authentication and key generation. While there are traditional methods for securing electronic devices used to store secret bits in memory, each instance of a physically unclonable function (PUF) device has a unique and unpredicta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32
CPCH04L9/3278G09C1/00H04L9/0866H04L2209/12H04L9/0861
Inventor J-L·当热P·阮
Owner SECURE IC