Half an hour passed, and after browsing all the manuscript data, Xu Chuan finally raised his head and looked out the window into the distance, as if he wanted to see the country on the ground of the earth through the dark night.

"You really look down on people with the design of this step, is this sure that none of us can untie the previous relationship?"

In front of the desk, Xu Chuan looked at the dark night sky and muttered to himself, after reading the information in his hand, he had found the corresponding law of the use of ciphertext functions.

Compared with the previous strict defense, in this last step, the other party's design simply opened the door directly.

The last step of the regular design is actually very simple.

Anyone who has studied functions knows that most of the complex functions in this world, with the exception of a very small part, are composed of two or three or more functions.

This also means that a complex function can be split into several elementary functions as needed.

This is the simplest way to do this in these encrypted messages, where they split a function problem into a date and insert it into plaintext.

In this way, it is only necessary to determine the basic and elementary functions used by date, and the final complex function can be determined.

And the date numbers for each day of the year are not repeated, just as today is March 8, 2015, and the numbers sewn into the plaintext after splitting are 20150308.

The specific position can also be determined, the first number is in the second of the first row, and so on, and the corresponding number of rows is vacated when zero is encountered.

This is a very simple incorporation that anyone with a little sensitivity to mathematics can find.

The difficulty is similar to that of elementary school students.

Therefore, Xu Chuan said to himself that the design of the law in this last step really looks down on people, and he is sure that they can't solve the previous law and can't write the corresponding digital model, so it doesn't matter if it will be discovered.

.......

After completely revealing the secrets behind the encrypted messages, Xu Chuan sorted out the manuscript, and after knowing all kinds of rules and data by heart, he left the original ciphertext and plaintext to be returned, and the other drafts and calculation materials were all burned and rushed into the sewer.

He couldn't take these things with him, but staying here was a scourge for him, and it was better to be cautious if he might reveal his secrets.

Not to mention the country, if the first district knew that this information war was solved by him, a high school student, he probably would not have any peaceful days in the future, and it would be impossible for him to take another step out of the country.

But it was impossible for him not to go abroad, and many of the theories and technologies in his mind were waiting for him to reproduce them with the help of the Euratom particle collider.

Reborn I, he still chose Sanjiang University as his university, not only because of his feelings, but also because of the roads and opportunities he had traveled in Sanjiang University in his previous life.

Just like in his previous life, he followed his mentor to CERN several times, and some opportunities only appeared in certain places.

.......

After finding the mathematical laws and secrets behind the encrypted messages, Xu Chuan also relaxed.

Although the matter has not yet been completely resolved, he believes that it will not take long for the corresponding mathematical model to be written.

He couldn't help much with the rest of the work.

He is not familiar with programming and cryptography, and he does not need his help, and there are still quite a lot of talents in these two areas in China.

For him, the most important goal of high school has been completed, and he can prepare for the IMO, IPHO and college entrance examination with peace of mind.

Although it is a bit of a bully to participate in such a competition as a reborn, after all, no one has ever won a gold medal in both competitions in the same year.

For this new achievement, Xu Chuan still has some expectations.

And it is a pity that he failed to get the absolute winner on the IPHO in his last life, and he has the opportunity to make up for it in this life, so he naturally doesn't want to miss it.

The next day, in the early morning, Xu Chuan had already woken up when the sky was bright.

After running a few laps in the playground of Sun Moon University, it can be regarded as a recovery from the exercise that has been stopped in recent days.

In the morning, he did not go to the information building, but took a good walk around the campus of Riyue University, and slipped into a classroom to listen to an open physics class.

College career and high school career are two completely different lives, and in high school, teachers will stare at you and take the initiative to ask you questions and investigate.

However, universities are an environment in which students take the initiative to acquire knowledge and receive information, and show the society that is larger than the course of study itself, and there are few teachers who care about how well you are learning, except for final exams.

An open class like this is a good place for students to demonstrate their ideas.

Although it is a university course, Xu Chuan finds this class quite interesting, and its core theme is the 'thermal stealth' effect, which is a cutting-edge topic in the physics world.

The concept of stealth has always been a popular element in science fiction novels and science fiction movies.

After all, there are a lot of astringent stories that can be yy.

What intrigued Xu Chuan in this class was the ideas put forward by some of the younger students in the class, or rather the seniors.

One of the seniors came up with the concept of a new 'hot stealth suit' in class.

In his philosophy, this garment is made up of countless small chips, each with its own processor and can call up the information of the eyeballs of all people, which can image, emit light, dissipate heat, cool, breathe, etc.

When a person wearing an invisibility cloak appears, each chip of the suit images the image that the observer originally saw at your location based on the observer's visual information.

This stealth suit is not only visually invisible, but also has the ability to 'thermal stealth', which can evade the detection of thermal imagers.

The idea is very whimsical, and it is impossible to achieve it with the current technology, but it provides Xu Chuan with another new idea.

In his previous life, he majored in physics and minored in materials, and he also has a deep understanding of materials.

Although this chip stealth suit is not very realistic, it is not impossible to achieve light stealth and thermal stealth.

In his previous life, he had studied a lot of materials, and some nanomaterials could achieve the quantum confinement effect through specific means, and apply this effect to adjust the band gap of the material, and then produce some unique photoelectric effects.

To put it simply, there is a material that can project different images at different angles like a multi-faceted mirror, so as to integrate with the surrounding environment, so as to create a blind spot that people cannot see through, making the object hiding inside invisible.

However, Xu Chuan did not go deep into this idea, and paused after a short idea and recorded it in his brain.

The greatest value of stealth should be in the military, but this is something he can't touch at the moment.

.......