I thought I couldn’t get a job in Japan without studying abroad, but that wasn’t the case. Since I was in junior high school, I had longed for international exchange, but I couldn’t take a step forward. I went to graduate school in my hometown of Wuhan. During the master’s course, when I saw the employment experience of my seniors, I was amazed at the remarkable development of electronic science and technology in China and remembered the dream I had in my heart. Do you have a chance to go to Japan after studying in Japan? Japanese technology is top class in Asia, and I have learned Japanese as a hobby, so I came up with the idea of getting a job in Japan. In Japan, where the birthrate is declining and the population is aging, and the labor force is scarce, I think that there are many companies that accept foreign workers, but the difficult part is how can you get a job in Japan? If you are a recruitment agency in China, your options are narrow. At the university employment fair in China, a few Japanese companies participate, but inland universities rarely come. My father advised me, “If so, why don’t you get another master’s degree abroad?” But I didn’t want to waste my time, so I didn’t accept my dad’s advice and was looking for another way. Finally, I found it. It is a program called “FAST OFFER International Program (formerly Study Go Work JAPAN Program)” sponsored by ASIA to JAPAN Co., Ltd., which supports employment in Japan for excellent overseas human resources. After registering, I received various pre-selections, and to my delight, I decided to participate in an interview in Japan. At the interview, I felt that I was looking at the potential of students in Japan, rather than checking the technical capabilities of Chinese companies in detail. For example, in addition to questions about their major, they also touched on various topics such as hobbies and daily life and confirmed whether they matched the atmosphere of the company. Because the interview was for foreign students, the interviewer did not use difficult Japanese and was like a casual meeting. Thanks to that, I was able to feel calm and appeal to myself. At the end of the two days, I got a job offer from a major Japanese machine maker and decided to get a job there. Due to personal circumstances, I had a good night in the second half of my graduation and decided to join the company in April 2020. Some of my fellow students have already started a new life in Japan from October of this year, so I am looking forward to resuming it in Japan with everyone.
研究テーマはPUFを使って、暗号を作ることです。PUF(Physically Unclonable Function)は電子回路の誤差を利用した暗号の作り方です。同じ回路を持つ半導体の、製造工程によるわずかな差異をチップの“指紋”として利用し、クローン出来ない暗号を作りました。3種のPUFを作る課題を4人のチームで行いました。私は回路の時間差を利用したArbiter PUFを担当しました。FPGA上に全く同じ回路を二つ作って、それぞれの中にデータが通れるルートを264個ずつにしました。64bitのルート選択信号を使い、ルートを変えながら、二つの回路に同時にチャレンジを与え、レスポンスが返す順番をアービタ回路で判断し、0と1で構成した暗号を作ることができました。作り上げた暗号は、同じチップでなければ再現できないため、複製の不可能性が高いです。