Soft puf based on camellia encryption algorithm

Abstract

The invention discloses a soft PUF based on the Camellia encryption algorithm, including a hardware platform, the hardware platform is a 128-bit Camellia encryption algorithm hardware circuit, and the PUF response data is obtained by using the path delay deviation in the hardware circuit based on the Camellia encryption algorithm, without special hardware overhead , and the PUF response is collected at a fixed clock frequency, which avoids the instability caused by the frequency change process. In addition, the PUF response undergoes multiple rounds of data randomization of the Camellia encryption algorithm, which has high uniqueness and randomness. Extracting the PUF response from the output of the encryption algorithm hardware circuit is less difficult to acquire and has more digits, which is more secure; the advantage is that it has the ability to resist frequency disturbance, high reliability, good uniqueness and randomness, and high security , which is conducive to the 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 the 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 keys in non-volatile memory (NVM), but they are extremely vulnerable to layout reverse engineering, microprobing and other attacks resulting in key leakage. Physical Unclonable Function (PUF) utilizes random process deviations in the manufacturing process of integrated circuits 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] The traditional PUF circuit relies on a special hardware structure to generate the required PUF response, and is us...

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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