Shulou(Shulou.com)06/02 Report--

Yunzhong comes from au Fei Temple.

Qubit report | official account QbitAI

Just now, the annual high-performance chip top conference Hot Chips ended at Stanford University in the United States.

In 2019, the main character belongs to AI. Huawei and Intel are introducing the latest AI chips and technologies and so on.

At such a conference, the team of Professor Wei Shaojun of Tsinghua University brought new research progress.

This is the only report on chip hardware security technology among the 26 reports of the Hot Chips conference.

It is also the only first author paper published by a Chinese university in the 31-year history of Hot Chips. The first author of the paper is Professor Liu Leibo, and the speaker is Luo ao, a senior researcher.

And the effect is very strong.

According to its team, this technology is expected to solve the chip security problems faced by more than 95 per cent of server CPU in China.

At present, this technology has been commercialized. Liu Leibo, a member of the core research team, has set up a chip startup company Xuanjia Microelectronics, which has the full support of Tsinghua University and technology authorization.

Based on this technology and related chips, Shanghai Lanqi has also designed and completed the Jinja ®server CPU chip, which has become the world's first server CPU chip with hardware security control capability.

The chip needs to be both powerful and safe.

Ensuring the hardware security of CPU chips is an internationally recognized problem that academia and industry have been facing but have not yet solved.

With the development of computer and semiconductor technology, CPU chip has become a highly complex chip. The process of design, manufacturing, packaging and testing involves a global industrial division of labor, so it is almost impossible to supervise all aspects effectively.

In addition, it is impossible to find malicious hardware that can be made up of only dozens of transistors among the billions to tens of billions of transistors that make up CPU.

Hardware loopholes caused by human negligence or technical limitations are even more difficult to find and difficult to prevent.

The traditional method of finding malicious hardware and hardware vulnerabilities by checking the design source code, Netlist, layout and tube core of CPU chips is like looking for a needle in a haystack, which is not feasible at all.

In short, it is difficult to ensure the hardware security of CPU chips.

In 2016, the team of Wei Shaojun and Liu Leibo of Tsinghua University proposed the "CPU hardware security dynamic monitoring and control technology" based on high security and flexible reconfigurable chip architecture.

This technology discovers "illegal behavior" by dynamically and real-time monitoring the "legal behavior" in the running process of CPU, which fundamentally overcomes the difficulties of traditional CPU security risks and technical vulnerabilities that are difficult to be monitored and discovered.

Hardware Trojans, hardware vulnerabilities (such as "circuit breakers", "ghosts"), hardware backdoors, and malicious use of hardware front doors can all be quickly discovered and controlled as needed.

After that, Wei Shaojun's team joined hands with Lan Qi shares to jointly develop the Jindao ®server CPU chip, and the CPU hardware vulnerability protection program developed in cooperation with Qihoo 360.

The Jinja ®server CPU chip is the world's first CPU chip that uses a third-party chip to monitor the processor core hardware at run time, officials said.

The measured results of the demonstration on Hot Chips are also quite eye-catching:

Multiple Jinja ®server CPU chips run at the same time, which can effectively detect more than 99.8% hardware attacks, and the performance loss is only 0.98%.

One more thing

Finally, I would like to introduce this Tsinghua chip company, which surfaced today.

Xuanjia is invested by Beijing Hetang Investment Management Co., Ltd., which is controlled by Tsinghua University. Liu Leibo, a professor of microelectronics from Tsinghua University, who reported the results of this study, is among the shareholders.

Liu Leibo received his bachelor's and doctorate degrees from the Department of Electronic Engineering and the Institute of Microelectronics in Tsinghua University in 1999 and 2004 respectively, and stayed on to teach in 2004. He is now a professor (Tenured Prof.), director of Tsinghua Microelectronics, doctoral supervisor, director of hardware security and cryptographic chip laboratory of Tsinghua University, and deputy director of Mobile Computing Research Center of Tsinghua University.

Professor Liu Leibo has long been engaged in the research of key technologies such as reconfigurable computing and its chips, hardware security and cryptographic chips.

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