Yan An's estimate was quite accurate, but he didn't expect this moment to come so early.

As soon as the front foot finished speaking, it was only a few days after Liu Men was studying here, and the phone call from the back foot counselor came.

Not his, of course.

His phone number was also exposed, and in order to avoid harassment, he simply left that mobile phone at home and brought it out with a different mobile phone.

Although Yan An asked BT to erase all the sensitive information in the evidence, the school was able to use the energy of the inspection team to investigate the identity of each whistleblower and rumor-monger.

Yan An thought that this matter would have to drag on for a few days before it would be dealt with, and at least give the school leaders time to discuss it, but he underestimated how seriously the school leaders attached to this matter.

As soon as the anonymous evidence was received, an emergency meeting was held, and the results of the discussion were presented within half an hour, and when the meeting ended, the leaders showed a hearty smile on their faces that had not been seen in the past week.

After being scolded for so many days, I finally have a goal to return to.

"You come to my office first, I have to ask you about the situation."

The counselor on the other end of the phone only had this short sentence, and from his serious tone, Liu Men could hear the seriousness of the situation.

Combined with what Yan An said, he had already guessed what was going on.

The complicated expression gradually left only fear and remorse, and his face changed from the initial red to black just now, to a miserable white, and his lips were actually spitting out these words.

"Don't be like this, I'm being used as a gun, I didn't mean to, I'm also a victim......"

Yan An shrugged, "What's the use of telling me, the counselor is still waiting for you." ”

The mobile phone that Liu Men was holding in his hand fell to the ground, and a flower bloomed on the screen. He didn't have the heart to feel distressed, so he picked up his mobile phone numbly and staggered towards the other teaching building where the teacher worked.

Seeing Liumen's heavy steps go away, Yan An felt that he was very pitiful after watching it for a while, so frightened that he hurriedly withdrew his gaze, but he couldn't have such a poisonous idea, just like Liumen, it couldn't be called miserable, it was purely self-inflicted.

For this kind of people, they can't be sincerely admitted to their mistakes, but they want to break their bones.

The school is quite satisfied with the speed of Liumen's handling Yan An, the counterattack against the whistleblowers has begun, but the initiator Wu Juren is still at large, this time there is the ACM Zhu Chi Council, and the inspection team has stood up to prove his innocence, what about next time?

Wu Juren's actions over the years are like a snake hiding in the dark, no matter who passes by, he will pounce on and bite, his remarks and his thoughts are like snake venom, constantly eroding the country and society, if you can't clean it up in time and let the toxin spread, the consequences will be unimaginable.

Giants will still be poisoned, not to mention a society with a variety of human hearts, as long as there are still some people who are influenced by his thoughts and words, and engrave servility into their bones. That Zhu Chi will always have a short board like a wooden barrel, and this short board is still rotten, and the breath emitted will make other wooden boards rot with it.

Even if the technology he mastered was advanced, it was useless, and the best way to prevent and control rot was not to treat the shortcomings of decay, but to directly dismantle the shortcomings and replace them with new ones.

If you don't dismantle it, you can't hold much water in such a short board, and it will keep leaking out, as long as there is a short board, the long board can not play its due value.

Yan An thought as he walked quickly to the classroom to find the front row to sit down and open the tablet.

Today's learning content is an RSA effective search algorithm for large integer n=pq decomposition, although there is still a certain gap from the final goal, but after today, he can start to try to build the algorithm in this direction, and after a few days of learning the relevant knowledge points, the algorithm will be perfected.

As I continued to learn along with the content on the tablet, the method ideas gradually became clearer.

Let n=pq, where p and q are both large primes, so that k=st, which is called the modulation factor, and if both of these are positive integers, then the square of the equation sp+tq is equal to the square of sp-tq plus 4stpq constantly.

……

If the square of m+1 minus 4kn yields the square of an integer, then n can be decomposed using Euclidean's algorithm.

In addition, there is an open algorithm that determines the value of each bit of m sequentially starting from the high bit of m, and expresses the bit length of x with the absolute value of x......

In order to facilitate the analysis, the shift is regarded as addition (the shift is simpler than the addition), because the addition operation is carried out after the left shift, which is only equivalent to the negation of the lowest bit bit, which is negligible, so in the worst case, only 4 (t-1) additions are required for the whole process.

The specific algorithm process is not long, because this is not really a factorization of large integers, but a certain tricky way, in the actual system it is impossible to exhaust the values of s and t to verify, so the RSA effective search algorithm has great effectiveness, but not absolutely.

As for the time complexity, it takes about an hour and a half to complete for a computer that can do 10 million basic addition operations per second, considering that the current computer computing speed of the Emerald Star is much greater than this, if it is combined with the distribution calculation of the network, the search range will be greatly expanded, making it of certain value.

Although it can't solve the problem perfectly, it is also a method and a way of thinking, which lays the foundation for Yan An's next study.

And this algorithm can also be upgraded a small wave, considering that it is difficult to find a suitable k in the current algorithm idea, it may be because the difference between p and q is too large, at this time, if you multiply a factor r on n, and then search for the square of m+1 minus 4krn, because the difference between p and rq is very small, it will be possible to search successfully.

After learning this, Yan An already had a preliminary idea in his mind, and he could try Wu Juren's ciphertext, even if he didn't succeed, he could accumulate experience and help him find his weaknesses and correct them.

When he had an idea in his head, he wanted to realize it immediately, and then he realized that he was in the classroom, and he had no choice but to wait until he got home to try again.

It's really inconvenient to do this, he didn't feel that way before BT gave him database permissions, and as he continues to learn more and more these days, he feels more and more troublesome.

It was okay when I was in the computer room before, after all, there was only one goal at that time, and I didn't have time to do anything else except brush up on questions every day. It's different now, and it's really unpleasant to have an idea when you can't do it immediately.

You have to find a way to come out of the platform of the entire cloud service, as long as he uses it alone, BT provides computing power, which can not only perfectly replace the artificial intellectual disability in the mobile phone, but also extend his contact with BT to direct dialogue in any place, and also use the platform of the cloud service to mount the functions he designed, and expand the services that BT can provide without permission tools to modify the code.

Before the cracking of the RSA encryption algorithm was realized, Yan An had already found the next target for himself.

In the past, the cloud service platform was not developed because the computer equipment of Biqiongxing was not good at that time, and the communication ability was relatively weak.

Now it is different, with the development of Blue Dome Star in terms of equipment and communication has been able to meet the basic needs, the cloud service platform also has a certain application value. Coupled with the fact that he was already able to use BT's database, the growth of technology was enough to support him in this function.

The only difficulty was that the amount of code was too large, and he couldn't do it alone, and he wouldn't have that much money to start a company.

The little money he has in hand is to be used to pay BT's electricity bill, and there is not much left, only enough to manage it for another ten years, and he can't afford to squander.

Thinking a little far, Yan An put his attention back on the tablet and finished learning the RSA effective search algorithm, although he felt a little regretful that he couldn't implement the code, but it didn't affect him to start the next book of learning.

As the progress deepened, he gradually felt a little struggling, knowledge is corroborated by each other, between different disciplines, let alone between the same discipline, his lack of knowledge in other aspects of mathematics has affected the study of number theory, causing him to spend a day to quickly go through those basic knowledge points.

In the evening, he had time to implement the RSA effective search algorithm during the day, although the theory did not seem complicated, but the code was limited everywhere, and he encountered dozens of technical problems in the implementation process, and he had to spend more time trying to find ways to solve these technical problems.

By the time the RSA effective search algorithm was completed, the time had come to two days later, during which a lot of things happened that delayed Yan An's progress.

First, according to the evidence sent to them by Yan An, three whistleblowers in the school were expelled in one go, and 12 rumor-mongers were punished and placed on probation.

The most serious disciplinary punishment that the school can give is expulsion, followed by probation, from which it can be seen that the school leaders are determined to rectify the campus environment, and the ideological education theme class meeting that is implemented in each class is carried out simultaneously.

This is only an operation for students in the school, in addition to more whistleblowers, rumors are social figures, because the main object of the whistleblower is Yan An, the school has no reason to prosecute, so they have to hand over the evidence to the procuratorate, and after learning that they also have mysterious people to send evidence, they began to urge to file a lawsuit as soon as possible.

The rumors of the rumor-mongers usually tie Yan An to Nandu University, which makes it easier for the school to hold them accountable, directly practice them, and demand a public apology, with other punishments from other quarters.

Just one day after the lawyer's letter was issued, the university made another big move - suing the students of Chunshen Wujiaochang University, including but not limited to Feng Wei, Li Liangrong and others.

To be honest, even Yan An didn't expect this move, although the school was defending its legitimate rights, and everything it did was a victim using legal weapons to legitimately fight back against the perpetrator, but in terms of Zhu Chi's overall environment, this is extremely rare.

Comets that are seen once in 70 years are not as rare as this.

The people who eat melons on the Internet were so shocked that they even dropped the melons, and everyone didn't expect that colleges and universities could be so rigid.

According to the grapevine, the reason for the prosecution is that Nandu University wants Wujiaoba University to severely punish these students who spread rumors, at least to have a demerit.

But Pentagon completely disagreed, and was only willing to give a warning, not even a serious warning, and not on the file, whether it was a verbal warning or a written warning, the punishment was very low, and it would not be an exaggeration to say that there was no.

After a night of communication and negotiation, the two sides collapsed, and this is what happened.

Compared with the school's thunderous reaction, the procuratorate's action is much slower, supplemented by the complete evidence from the school's investigation, the facts of the crime have been clarified, and criminal responsibility can be pursued in accordance with the law.

But after two days of waiting, Yan An didn't receive any news, and he didn't know when he would go.

Maybe that's how they can call it normal speed. It's that the school is so fast that it seems like they're slow in comparison.

Yan An could only wait patiently, and the implementation of the RSA effective search algorithm was not left behind in the past two days, and although there were many problems, it was successfully completed in the end.

Since the cloud service has not yet come out, BT cannot provide computing power support, so Yan An can only use his own computer to run, but fortunately, his computer is good, and the result is available in less than half an hour.