Soft PUF based on Camellia encryption algorithm

Abstract

The invention discloses a soft PUF (Physical Unclonable Function) based on a Camellia encryption algorithm, which comprises a hardware platform, the hardware platform is a 128-bit Camellia encryption algorithm hardware circuit, PUF response data is acquired by utilizing path delay deviation in the Camellia encryption algorithm hardware circuit, special hardware overhead is not needed, PUF response acquisition is carried out under a fixed clock frequency, the instability phenomenon caused in the frequency change process is avoided, in addition, the PUF response is subjected to multi-round data randomization of the Camellia encryption algorithm, the uniqueness and randomness are relatively high, the collection difficulty of extracting the PUF response from the output of the Camellia encryption algorithm hardware circuit is low, the number of bits is relatively large, and the security is relatively high. The Soft PUF based on the Camellia encryption algorithm has the advantages of frequency disturbance resistance, high reliability, good uniqueness and randomness and high security, and is beneficial to application in the field of information security.

Description

technical field [0001] The invention relates to a soft PUF, in particular to a soft PUF based on a Camellia encryption algorithm. Background technique [0002] With the advent of the Internet of Things (IoT) era, how to ensure secure communication between devices becomes the key. Traditional security measures store the key in non-volatile memory (Non-volatile Memory, NVM), but it is extremely vulnerable to key leaks due to attacks such as layout reverse engineering and micro-probing. Physical Unclonable Function (Physical Unclonable Function, PUF) uses random process deviations in the integrated circuit manufacturing process to generate high-security keys that can resist various physical attacks, and can be widely used in equipment anti-counterfeiting, user authentication, and integrated circuit intellectual property ( Intellectual Property, IP) nuclear protection and other occasions. [0003] Traditional PUF circuits rely on special hardware structures to generate the req...

AI Technical Summary

Problems solved by technology

According to the coding rules, each sampling point can only generate a 2-bit response. Due to the small number of response bits, the difficulty of cracking the PUF of the microprocessor is relatively low, and it is not conducive to chip authentication.

According to the experimental results, the uniqueness and randomness of the microprocessor PUF are also low

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