Physical Unclonable Functions Using Analog Circuit

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K11977
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 60070:Information security-related
• Research Institution: Tokyo National College of Technology
• Principal Investigator: Kang Hyunho 東京工業高等専門学校, 電子工学科, 准教授 (40509204)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 物理的クローン不可関数 / アナログ部品 / PUF

Outline of Final Research Achievements

As a study to discover physical unclonable functions (PUFs) such as hardware fingerprints, the first result was the discovery of physical unclonable functions in analog components. The second achievement is that students were able to experience state-of-the-art research experiments in electronic circuit experiments conducted in high schools, KOSEN and universities.
In other words, this study proposes a PUF that uses analog devices. Because many IoT devices contain many analog elements, we assume it is possible to create a PUF for each device individually. Our research on analog PUFs proposes four types of circuits, one is to use a resistor matrix circuit and it is also suggested to use a Hartley oscillator circuit, a wien bridge oscillator circuit and an astable multivibrator circuit.

Free Research Field

情報セキュリティ，機械学習

Academic Significance and Societal Importance of the Research Achievements

現在までに研究された電子的特性を利用した物理的クローン不可関数(Physical Unclonable Function, 以下PUF)の多くはSRAM PUFと呼ばれるメモリを利用したものやFPGA（Field-Programmable Gate Array）の内部の細かい特性によるデジタル的な変化を特徴として利用しているものが主であった. そこでPUF製造が目的ではなかったアナログ部品から固有の信号を取り出すことで，固有のトークン製造コストを極端に低くすることが可能であり，このような研究アプローチは学術的・社会的に非常に価値があると考える．