Chapter 53 The conceited American
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 through the dark night.
"You are really looking down on this step of the design. Are you sure that none of us can solve 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 rules for using functions in ciphertext.
Compared with the strict defense before, in this last step, the opponent's design simply opened the door.
The last step of rule design is actually very simple.
Anyone who has studied functions knows that most of the complex functions in the world, except for a few, are composed of two, three or more functions.
This also means that a complex function can be split into several elementary functions as needed.
This is the simplest method used in these encrypted messages. They split a function problem into a date and inserted it into the plain text.
In this way, you only need to determine the basic function and elementary function used according to the date, and you can determine the final complex variable function.
The date numbers for each day of each year will not repeat, just like today is March 8, 2015. The number sewn into the plain text after splitting is 20150308.
The specific position can also be determined. The first number is the second number in the first row, and so on. When zero is encountered, the corresponding row number is empty.
This extremely simple incorporation can be discovered by anyone with a little mathematical sensitivity.
The difficulty level is similar to that of primary school students looking for patterns.
That's why Xu Chuan said to himself that he really looked down on people when designing the last step of the rules. He was convinced that they couldn't solve the previous rules and write the corresponding numerical model, so it didn't matter whether they would be discovered.
After thoroughly uncovering the secrets behind the encrypted messages, Xu Chuan sorted out the manuscripts and memorized the various patterns and data. He left behind the original ciphertext and plaintext manuscripts that needed to be returned, as well as other drafts and calculation data. It was all burned and flushed into the sewer.
It is impossible for him to take these things away and he cannot take them away, but staying here is a disaster for him. His secrets may be exposed, so it is better to be cautious.
Not to mention the country, if the United States knew that this information war was solved by him, a high school student, he would probably not have any peace in the future, and he would not be able to step abroad again.
But it was impossible for him not to go abroad. Many theories and technologies in his mind were waiting for him to reproduce them with the help of the particle collider at the European Atomic Energy Laboratory.
After his rebirth, he still chose Sanjiang College as his university, not only because of his feelings, but also because of the path and opportunities he had traveled at Sanjiang College in his previous life.
Just like he followed his mentor to CERN several times in his previous life, some opportunities only appeared in specific places.
After finding the mathematical rules and secrets behind the encrypted messages, Xu Chuan finally relaxed.
Although this 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 does not need his help. There are still quite a lot of talents in these two fields in China.
For him, the most important goal in high school has been achieved, and he can prepare for IMO, IPHO and college entrance examination with peace of mind.
Although it feels like bullying children to participate in such a competition as a reborn person, after all, no one has won the gold medal in these two competitions in the same year. Xu Chuan still has some expectations for this new achievement.
Moreover, it was a pity that he failed to win the absolute winner in IPHO in his previous life. He had the opportunity to make up for it in this life, so he naturally did not want to miss it.
The next day, early in the morning, Xu Chuan had already woken up at dawn.
I ran a few laps on the playground of Sun Moon University, which was a way to resume the exercise I had stopped doing in recent days.
In the morning, he did not go to the Information Building. Instead, he took a walk around the Riyue University campus and slipped into a classroom to listen to an open physics class.
College career and high school career are two completely different lives. In high school, teachers will watch you study and take the initiative to ask you questions and investigate.
However, university is an environment where you actively acquire knowledge, receive information, and present to the society greater than the learning course itself. Except for final exams and other exams, few teachers care about how you are doing in your studies.
Open classes like this are a good place for students to demonstrate their ideas.
Although it is a university course, Xu Chuan found this class quite interesting. Its core theme is the 'thermal invisibility' effect, which is considered a cutting-edge topic in the physics world.
The concept of invisibility has always been a popular element in science fiction novels and movies.
After all, it can tell a lot of funny stories.
What interested Xu Chuan in this class were some of the ideas put forward by some young students in the class, or should I say, the seniors.
A senior student proposed the concept of a new 'thermal invisibility cloak' in class.
In his concept, this kind of clothing is composed of countless small chips. Each chip has its own processor and can call up information from everyone's eyeballs. It can image, emit light, heat dissipation, cooling, ventilation, etc.
When a person wearing an invisibility cloak appears, each chip in the suit will image the original image seen by the observer at your position according to the observer's visual information.
This kind of invisibility cloak is not only visually invisible, but also has the ability of 'thermal invisibility', which can avoid detection by thermal imaging cameras.
The idea is very whimsical and impossible to realize with the current technology, but it provides Xu Chuan with another brand-new idea.
In his previous life, he majored in physics and minored in materials. He also has a deep understanding of materials.
Although this kind of chip invisibility cloak is not very realistic, it is not impossible to achieve optical invisibility and thermal invisibility.
He has studied many materials in his previous life. Some nanomaterials can achieve quantum confinement effects through specific means, and use this effect to adjust the band gap of the material, thereby producing some unique photoelectric effects.
To put it simply, there is a material that can project different images at different angles like a polygon mirror, thereby integrating it with the surrounding environment, thus creating a blind spot that no one can see through, making the objects hiding inside invisible. Invisible.
However, Xu Chuan did not go deep into this idea. He briefly thought about it and recorded it in his brain, then paused.
The greatest value of invisibility should be in the military, but this is something he cannot touch at the moment.