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A Physical Unclonable Function Circuit Using Impedance Mismatch Effect

An impedance mismatch, functional circuit technology, applied in the protection of internal/peripheral computer components, etc., can solve problems such as reliability, insufficient performance, and poor PCB quality

Active Publication Date: 2018-07-13
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, the counterfeit PCBs are of poor quality, leading to issues of reliability, performance, etc.
Current industry practices do not provide adequate solutions to combat the aforementioned PCB counterfeiting problem

Method used

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  • A Physical Unclonable Function Circuit Using Impedance Mismatch Effect
  • A Physical Unclonable Function Circuit Using Impedance Mismatch Effect
  • A Physical Unclonable Function Circuit Using Impedance Mismatch Effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment one: if figure 1 As shown, a physical unclonable function circuit using the impedance mismatch effect, including three two-input AND gates, two impedance mismatch amplifiers with the same structure, a frequency divider, the first D flip-flop D1, and the second D flip-flop D2, the first JK flip-flop J1, the first counter, the second counter, the comparator and the first inverter E1; the two-input AND gate has a first input terminal, a second input terminal and an output terminal, and three two-input The AND gates are the first two-input AND gate G1, the second two-input AND gate G2, and the third two-input AND gate G3, and the two impedance mismatch amplifiers are respectively the first impedance mismatch amplifier and the second impedance mismatch amplifier; The first D flip-flop D1 and the second D flip-flop D2 both have an input terminal, a clock terminal, an output terminal and an inverting output terminal, and the first JK flip-flop J1 has a J terminal, a...

Embodiment 2

[0017] Embodiment two: if figure 1 As shown, a physical unclonable function circuit using the impedance mismatch effect, including three two-input AND gates, two impedance mismatch amplifiers with the same structure, a frequency divider, the first D flip-flop D1, and the second D flip-flop D2, the first JK flip-flop J1, the first counter, the second counter, the comparator and the first inverter E1; the two-input AND gate has a first input terminal, a second input terminal and an output terminal, and three two-input The AND gates are the first two-input AND gate G1, the second two-input AND gate G2, and the third two-input AND gate G3, and the two impedance mismatch amplifiers are respectively the first impedance mismatch amplifier and the second impedance mismatch amplifier; The first D flip-flop D1 and the second D flip-flop D2 both have an input terminal, a clock terminal, an output terminal and an inverting output terminal, and the first JK flip-flop J1 has a J terminal, a...

Embodiment 3

[0020] Embodiment three: as figure 1As shown, a physical unclonable function circuit using the impedance mismatch effect, including three two-input AND gates, two impedance mismatch amplifiers with the same structure, a frequency divider, the first D flip-flop D1, and the second D flip-flop D2, the first JK flip-flop J1, the first counter, the second counter, the comparator and the first inverter E1; the two-input AND gate has a first input terminal, a second input terminal and an output terminal, and three two-input The AND gates are the first two-input AND gate G1, the second two-input AND gate G2, and the third two-input AND gate G3, and the two impedance mismatch amplifiers are respectively the first impedance mismatch amplifier and the second impedance mismatch amplifier; The first D flip-flop D1 and the second D flip-flop D2 both have an input terminal, a clock terminal, an output terminal and an inverting output terminal, and the first JK flip-flop J1 has a J terminal, ...

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PUM

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Abstract

The invention discloses a physical unclonable function circuit using impedance mismatch effect, which comprises three two-input AND gates, two impedance mismatch amplifiers that have the same structure, a frequency divider, a first D trigger, a second D trigger, a first JK trigger, a first counter, a second counter, a comparator and a first inverter; each two-input AND gate has a first input terminal, a second input terminal and an output terminal; the three two-input AND gates are a first two-input AND gate, a second two-input AND gate and a third two-input AND gate; the two impedance mismatch amplifiers are a first impedance mismatch amplifier and a second impedance mismatch amplifier; the first D trigger and the second D trigger have an input terminal, a clock terminal, an output terminal and an anti-phase output terminal respectively; the first JK trigger has a J terminal, a K terminal, a clock terminal and an output terminal; the comparator has a first input terminal, a second input terminal and an output terminal. The advantages are that forgery attacks in different forms can be effectively prevented; truth of the PCB can be identified; and PCB reliability can be improved.

Description

technical field [0001] The invention relates to a physical non-clonable function circuit, in particular to a physical non-clonable function circuit using impedance mismatch effect. Background technique [0002] Printed Circuit Board (PCB) is widely used in electronic systems to arrange various through holes (such as component holes, fastening holes, metallized holes, etc.), and realize the mutual connection between electronic components through transmission lines. connect. PCB has developed from single-layer to double-sided board, multi-layer board and flexible board, and is constantly developing towards high precision, high density and high reliability. The global annual output value related to PCB is as high as 59.1 billion US dollars. With the increasing complexity and cost of PCB design, system integrators are increasingly relying on third-party suppliers for PCB design and manufacturing. The PCB design and manufacturing process is usually distributed, so the supply ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/73
CPCG06F21/73
Inventor 郑晓敏张跃军张佳文胡文琪罗运岑
Owner NINGBO UNIV