From Almighty Scholar to Chief Scientist

Chapter 338 Birthday Paradox and Fake Attack
"Do you have a way?"

Hearing Lin Xiao's words, Kong Hua'an was taken aback for a moment.

He thought for so long, but he didn't think of what to do. As a result, Lin Xiao had a solution so soon?

Lin Xiao smiled and said, "Do you know the birthday paradox?"

"know."

Of course, Kong Huaan knew that when he was studying cryptography, he generally understood this. As a hacker, he spent almost a lot of time fighting against cryptography, so he naturally did some research on cryptography.

Strictly speaking, the birthday paradox is not a paradox, it's just counterintuitive.

"The probability that at least two people have the same birthday among no less than 23 people is greater than 50%, and when there are no less than 60 people, this probability directly becomes 99%."

Lin Xiao opened his mouth and stated the birthday paradox.

Obviously, this conclusion is quite counterintuitive.

Without considering the leap year, there are 365 days in a year, and there must be at least 366 people to ensure that two people have the same birthday. As a result, the probability is changed from 1 to 0.5, and the number of people changes from 366 to 23?

But if calculated from the method of mathematical statistics, this is completely correct.

Kong Huaan nodded, this birthday paradox is indeed so strange, but for mathematical geniuses like them, this is not a problem.

It must not be forgotten that Kong Huaan had won the CMO gold medal back then, and his mathematical talent was still at the level of a genius in the eyes of ordinary people.

However, what does the thing Lin Xiao mentioned have anything to do with their question?

One is cryptography, and the other is artificial intelligence.

And Lin Xiao smiled again at this time, and said, "Then, I believe you also know about birthday attacks?"

"Yes, I know." Kong Huaan nodded again.

He knows this better, of course he understands this hacking method.

So Lin Xiao just smiled: "That's it, we use the principle of birthday attack to carry out a kind of, uh... feign attack on the logic in the designed integrated circuit, and then use the mathematical principles in the birthday paradox to realize A test of its circuit logic."

"This method can greatly reduce the computing power required for self-inspection and avoid enumerative self-inspection. In addition, our program can also feed back to the intelligence based on the result of the fake attack, and then let the intelligence analyze it. Give an optimization plan."

"In this way, the differentiated functions you are looking for can be realized."

Listening to Lin Xiao's narration, Kong Hua'an showed a vague expression on his face.

It sounded quite powerful, and he also understood what Lin Xiao meant, but he still didn't understand how to describe this logic in mathematical language.

And this probably requires Lin Xiao's mathematical ability to solve it.

However, Lin Xiao saw Kong Huaan's expression, thought for a while, and said, "You should know the role of the birthday paradox in other aspects, right? Redis storage, do you know?"

Hearing the redis storage, Kong Huaan's eyes suddenly lit up, "I know, oh! I know what you mean!"

"Is it like the principle of saving redis storage?"

"Yes." Lin Xiao nodded.

Kong Huaan clapped his hands, showing a surprised expression, and said at the same time, "I understand."

Lin Xiao's idea had to be called bold.

Who would have thought that Lin Xiao would use data attacks to conduct self-inspection and feedback optimization?

But Kong Hua'an is indeed a genius, Lin Xiao just reminded him briefly, and he realized Lin Xiao's plan.

Of course, if Kong Huaan was not a genius, he would not have been able to directly get involved in the field of semiconductors from a programmer, and even play an extremely important role in the X-ray project. After he moved to the field of EDA software, he would directly After writing such a fully functional software, I even planned to innovate.

Lin Xiao smiled and said, "Okay, now that you understand, we can prepare to build this mathematical model now."

"First, let me build the fake attack part."

After speaking, Lin Xiao directly pulled a chair from the side, took the draft paper and pen, and began to write.

When Kong Huaan saw that Lin Xiao started to write, he also found something and started to write, "Then I'll build the smart feedback part later."

"Ah."

Lin Xiao responded without raising her head, and continued to write. Kong Huaan also didn't say much, and started to write.

The part of the fake attack that Lin Xiao is in charge of is obviously the most complicated. It is obviously not easy how to make this fake attack realize the feint attack process while also checking the circuit logic, and achieving the ultimate goal with a small computing power like the birthday attack.

However, this is also something that must be passed. For large-scale integrated circuits, because the circuit is too complicated, it is very troublesome to design. For example, chips with 5nm and 7nm processes can easily have tens of billions of transistors. There is no need to consider transistors. After the circuit is designed, the EDA software can generate transistors according to the circuit. However, the more precise the manufacturing process, the more complicated the circuit will be. Therefore, as long as the function that Kong Huaan wants to design can be realized, it will greatly reduce the number of transistors. Time for chip design.

It can even reduce the number of final tape-outs, and the number of times is the cost.

A 5nm chip tape-out needs nearly 3 million yuan, and four tape-outs, that is more than one billion yuan, and the time it takes is extremely long.

So it is conceivable how useful this function will be, and the major chip design companies will probably be happy with it by then.

And it just so happens that foreign EDA software companies have withdrawn from the domestic market, and the domestic market is blank. Although there is no EDA software in China, if these software can meet the needs, then obviously there is no need to worry about the prohibition of foreign EDA software. .

At that time, once their software with this function appears, the result can be imagined, the domestic market will be occupied by them first, and then there is no need to worry about other things at all.

Thus, the two performed their duties in this way, and at the same time they both entered the state.

Time also passed slowly.

……

The news that the EDA software was restricted quickly spread.

The news that Lin Xiao and the old man got was first-hand information, and then America also announced the news, and after that, related news naturally swept across the country immediately.

Immediately, there was a lot of scolding in the country.

This bald eagle, who thought he had been honest for half a year, ended up showing his original ugly posture, which is really disgusting.

"It's really shameless, except for sanctioning this and sanctioning that all day long, that's all you can do, right? 』

"Can I stop having a bad face? 』

"..."

Among the many scolding comments, some netizens also mentioned Lin Xiao.

『Hey, I said before that I was going to do something about raw materials, but Lin Shen yelled and gave up, and now I’m starting to do something about software. Maybe it’s because Lin Shen didn’t make any achievements on computers before. That's why you have the guts, right? 』

"Lin Shenming also worked on computers. I remember it was two years ago. Didn't there be a hot search saying that several computer Ph. 』

"Yes yes yes, I also remembered this matter, hey, then it's time to sacrifice the forest god"

"Don't get me wrong, Lin Shen's original method of solving problems is strictly mathematical. Of course, I don't think Lin Shen can't use computers."

"Then be the God of Lin, let him punish him, and I choose to sacrifice the God of Lin!" 』

"..."

Many netizens have always had hope for Lin Xiao, as if Lin Xiao has become the anti-Afghan No. 1 in their eyes.

However, among the many external comments, some comments from chip design engineers also appeared.

『I am a chip design engineer. Seeing that there are still so many optimistic voices in the comment area, I just want to say: you know a P!Our company has been using Synopsys EDA software. As a result, our EDA software can no longer be designed. The chip of our original project has been put on hold indefinitely, and the toolkits of each software are different. It is compatible with each other, but the compatibility of domestic software is so poor that it is difficult to achieve compatibility at all. Now all of us are facing the risk of losing our jobs! 』

"I am also a worker in this field. It is really hard for me to imagine what to do. I used to be in this industry, but now I am over 35 years old, and it is too late to change careers. My family still has a mortgage and a car loan, and my son is about to go to high school. , I'm stressed now... alas』

"Me too, now I have to go abroad or go home to farm, but foreign companies don't want people like me, what should I do?"I heard that the chief chip engineer of our company got an invitation letter from Samsung, but our chief chip engineer is considered a bigwig in the industry...』

"I beg the country to help us!" 』

"..."

These comments have gradually attracted people's attention.

It was only then that people realized how much this incident had affected, but even if they felt sympathy for these people, no one could solve it.

I heard that some foreign companies have begun to tap their chip design talents, which makes people realize that this is a series of tricks in foreign countries, not only to draw salaries from the bottom of the pot, but also to take advantage of them.

All of a sudden, the foreign semiconductor design industry began to be in chaos.

……

Warwick Hayes Semiconductor Corporation.

As a company that has designed many chips in Warwick, Hays Semiconductor can be included in the ranks of the world's top chip design companies.

And especially in recent years, Hayes Semiconductor has been on a roller coaster.

First, TSMC refused to accept their orders, and they were frustrated for several years. As a result, they suddenly produced a top-level lithography machine in China, and they also had the ability to produce chips. The Kirin 9000s chip that they recently produced can be said to make them happy. up.

As a result, now, EDA software has been sanctioned, and they are all caught in a dilemma.

(End of this chapter)