Physical unclonable function circuit structure based on multiple bunching delay

Abstract

The invention discloses a physical unclonable function circuit structure based on multiple bunching delay. The physical unclonable function circuit structure includes a variable-source multiple bunching delay module, a fuzzy extractor module and a logging and recurrence module; a multiple bunching delay unit and a fuzzy extractor which is based on linear codes and a hash function family are adopted, and physical unclonable functions which are high in stability and uniqueness are achieved.

Description

technical field [0001] The invention relates to a method for realizing circuit identification through device manufacturing variability, in particular to a physically unclonable function circuit structure based on multiple group delays. Background technique [0002] With the wide application of ID cards, there are various ways to generate IDs, among which physical unclonable function (PUF) stands out because of its characteristics of being unclonable and easy to implement. At the end of the 19th century, some scholars began to use the idea of ​​biometrics for reference, and used random patterns on paper and optical marks as anti-counterfeiting marks for important items such as currency. Later, electronic PUFs were realized by using integrated circuits, the core of which is the inherent randomness in the manufacturing process of integrated circuits, which is generated by the inevitable process deviation in the manufacturing process. [0003] However, due to the uniqueness pro...

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Problems solved by technology

[0003] However, due to the uniqueness problems caused by non-random system errors and the stability problems caused by environmental factors, the performance of physical unclonable functions as IDs is insufficient. There are currently some optimization techniques

Most methods have shortcomings such as insufficient stability and poor uniqueness

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