Half an hour passed, and after browsing through 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 guys really look 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 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 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.
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 examine you.
What interested Xu Chuan in this class were some of the ideas put forward by some young students in the class, or rather the seniors.
The date numbers of each day of each year will not be repeated, just like today is March 8, 2015, the number sewn into the plain text after splitting is 20150308.
I ran a few laps on the playground of Riyue University, which was a way to resume the exercise I had stopped doing in recent days.
The difficulty level is similar to that of primary school students looking for rules.
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, and naturally he did not want to miss it.
Open classes like this are a good place for students to demonstrate their ideas.
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.
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.
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 based on the observer's visual information.
After finding the mathematical rules and secrets behind the encrypted messages, Xu Chuan finally relaxed.
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 sure that they couldn't solve the previous rules and write the corresponding numerical model, so it didn't matter whether they would be discovered or not.
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 the information of everyone's eyeballs, and can image, emit light, heat dissipation, cooling, ventilation, etc.
He couldn't help much with the rest of the work.
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.
However, university is an environment in which students proactively acquire knowledge, receive information, and present information to students, which is greater than the study course itself. Except for final exams and other exams, few teachers care about how you are doing in your studies.
The next day, early in the morning, Xu Chuan had already woken up at dawn.
This extremely simple incorporation can be discovered by anyone with a little mathematical sensitivity.
The concept of invisibility has always been a popular element in science fiction novels and science fiction movies.
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, the plaintext manuscripts that needed to be returned, and other drafts and calculation data.
It was burned and flushed into the sewer.
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.
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.
It is impossible and impossible for him to take these things away, but staying here would be a disaster to him, and his secrets may be exposed, so it is better to be cautious.
The idea is very whimsical and impossible to realize with the current technology, but it provides Xu Chuan with another brand-new idea.
Just like he followed his mentor to CERN several times in his previous life, some opportunities only appeared in specific places.
Not to mention the country, if the first district knew that this information war was solved by him, a high school student, he would probably not have any peace in the future, and it would be impossible for him to step abroad again.
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.
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.
After all, it can produce a lot of sad stories.
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.
Although this kind of chip invisibility cloak is not very realistic, it is not impossible to achieve optical invisibility and thermal invisibility.
Xu Chuan still has some expectations for this new achievement.
In his previous life, he majored in physics and minored in materials. He also has a deep understanding of materials.
Although this matter has not been completely solved yet, he believes that it will not take long for the corresponding mathematical model to be compiled.
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 stopped.
The greatest value of invisibility is probably in the military, but this is something he cannot touch at the moment.