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A hybrid puf circuit

A hybrid and circuit technology, applied in logic circuits, electrical components, pulse technology, etc., can solve the problems of general model attack effect, general machine learning attack effect, PUF circuit reliability and randomness, etc., to achieve high reliability Randomness, strong defense against model attacks and machine learning attacks, and strong capabilities

Active Publication Date: 2018-03-23
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The power-on initial value PUF circuit has an excellent effect on dealing with model attacks, but the effect on dealing with machine learning attacks is average; while the decision-based PUF circuit has excellent effects on dealing with machine learning attacks, but the effect on dealing with model attacks is average
The reason is that the reliability and randomness of the above two PUF circuits are not very high, and it is difficult to defend against model attacks and machine learning attacks at the same time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment one: if figure 1 As shown, a hybrid PUF circuit includes a basic PUF circuit and a control PUF circuit, and the basic PUF circuit is a decision-type PUF circuit;

[0032] The basic PUF circuit includes a decision device and an n-bit delay circuit. The decision device has a first input terminal, a second input terminal and an output terminal. The delay circuit is composed of two delay circuit units, and the two delay circuit units respectively have a first input terminal, a second input terminal, and an output terminal. The second input terminal, the output terminal and the enabling terminal, the two delay circuit units are respectively the first delay circuit unit and the second delay circuit unit, the first input terminal and the second delay circuit unit of the first delay circuit unit in the delay circuit The first input end of the delay circuit is connected to the first input end of the delay circuit, the second input end of the first delay circuit unit i...

Embodiment 2

[0037] Embodiment two: if Figure 1-Figure 7 As shown, a hybrid PUF circuit includes a basic PUF circuit and a control PUF circuit, and the basic PUF circuit is a decision-type PUF circuit;

[0038] The basic PUF circuit includes a decision device and an n-bit delay circuit. The decision device has a first input terminal, a second input terminal and an output terminal. The delay circuit is composed of two delay circuit units, and the two delay circuit units respectively have a first input terminal, a second input terminal, and an output terminal. The second input terminal, the output terminal and the enabling terminal, the two delay circuit units are respectively the first delay circuit unit and the second delay circuit unit, the first input terminal and the second delay circuit unit of the first delay circuit unit in the delay circuit The first input end of the delay circuit is connected to the first input end of the delay circuit, the second input end of the first delay circ...

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Abstract

The invention discloses a hybrid PUF circuit, which includes a basic PUF circuit and a control PUF circuit. The decision-type PUF circuit realizes the basic PUF circuit. The register and the power-on initial value PUF circuit are alternately set to realize the control PUF circuit. The control stored in the register The signal and the signal generated by the power-on initial value PUF circuit are spliced ​​to form an n-bit excitation signal as the enable signal of the basic PUF circuit. Each bit of the excitation signal needs to pass through the first delay circuit unit and the second delay circuit in the basic PUF circuit. The output data of the basic PUF circuit is generated by the delay difference between the two delay paths. In these two delay paths, each delay circuit unit completes the switch according to the corresponding excitation signal. The operation determines whether the rising edge signal propagates in a straight line or cross-propagates, and finally generates the PUF output signal through the decision device; the advantage is that it has high reliability and randomness, and the ability to defend against model attacks and machine learning attacks is strong.

Description

technical field [0001] The invention relates to a PUF circuit, in particular to a hybrid PUF circuit. Background technique [0002] The physical unclonable function circuit (PUF) uses the uncontrollable random changes in the chip manufacturing process to generate low-cost key information, which is applied to IC authentication to prevent cloning, imitation and forgery of circuits. In the actual encryption technology, the PUF circuit generates an infinite number of unique key information by extracting the texture features of the chip, which can be used for device authentication and security applications, which can improve system security and reliability, and has been widely used in Security field and anti-counterfeit chip. In addition, the data of a single PUF circuit must be easy to extract, even if its circuit structure and manufacturing process are known, the same output data cannot be reproduced. Variations at the circuit behavior level include manufacturing process vari...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K19/094
Inventor 张跃军汪鹏君李刚钱浩宇
Owner NINGBO UNIV