Of course, Qu Sen did not know that the moment he left, his roommates were talking about him behind his back.
He asked Zhou Li if she had eaten. When he heard Zhou Li say she had eaten on the third floor, he ignored her and followed her all the way to Professor Wu's office.
It wasn't that Qu Sen wasn't curious about why Zhou Li suddenly called him over, but he was getting to know Zhou Li better. He knew that the more you asked, the more she would not say. If you did not ask, she would not be able to hold it in for a while.
As expected, when they were halfway there, Zhou Li could not help but ask, "Aren't you curious at all? Why are you going there?"
"I'm curious, but you won't say anything when I ask," Qu Sen answered truthfully.
"Hey, why are you getting more and more boring?" Zhou Li raised her hand and slapped Qu Sen for no reason.
Qu Sen was used to being slapped. Besides, his winter clothes were thick, so it did not hurt to be slapped. He completely ignored Zhou Li's slap and asked casually, "Where is Li Ying?"
When Zhou Li heard this, she suddenly stopped walking. She squinted her eyes and asked, "What? Do you miss her? "
Qu Sen panicked for no reason. He subconsciously explained, "No, I didn't see why you were looking for me. I deliberately said something else to make you take the initiative to talk about it."
"Really?" Lady Zhou squinted her eyes even more. It was obvious that she was trying to distinguish whether Qu Sen was telling the truth or not.
"Of course, you didn't say anything when I asked. I was just worried." Qu Sen explained further. At the same time, he gently pushed Zhou Li's back with his hand. The two of them set off again.
"Oh, I have to be more careful in the future. You are getting more and more cunning," Zhou Li said with a double meaning. She could not tell whether Qu Sen was telling the truth or not.
"Then tell me quickly, what do you want me to do?"
"It's nothing. Our Director Sun is here. This time, he brought the software for the relay station along with him. We're waiting for you to evaluate it, Master Qu!"
"It can't be?"
It was Qu Sen's turn to stop.
Obviously, there was no chance of backing down in front of Lady Zhou. No matter what Qu Sen did, Professor Wu's studio still appeared in front of him. Zhou Li knocked on the door. After opening the door, he pushed Qu Sen, who was still dawdling, from behind. The two of them entered the house one after the other.
"Come, Little Qu, have a seat." Although it was only Sun Limei's second time meeting Qu Sen, she was very enthusiastic. As soon as Qu Sen entered the room, she invited him to sit on a chair beside her.
She took out a military laptop, pressed the power button, and said to Qu Sen, "I heard from Zhou Li that you have been busy with your final revision recently. I was thinking about taking up some of your rest time after dinner. Is that okay with you?"
Qu Sen said in his heart, "It's okay as long as you pay me." However, as long as one was not a fool, one would know to keep these words in mind. Therefore, Qu Sen said, "Of course, no problem. However, my knowledge is really limited. Last time, it was just a blind cat running into a dead mouse."
"Okay, you don't have to be humble." Sun Limei smiled and patted Qu Sen's shoulder, "We'll be happy if you can't find the problem. If you can find the problem, we'll be even happier."
Qu Sen looked at the laptop that had been booted up and entered into the system. He did not reach out to touch it. What kind of joke was this? It had been so long. He had already forgotten most of the self-written code. He did not even need to think to know about the loophole in the help command. They must have already fixed it.
However, since Sun Limei mentioned that she wanted Qu Sen to help with the test, he actually thought about it when he was free. Anyway, regardless of whether he thought about it or not, he would not just sit here and stare at the computer.
Qu Sen simply organized his words and said to Sun Limei with a humble attitude, "Director Sun, I really don't have the ability to crack your software. However, I do have some ideas. I don't know if I can share them with you."
Sun Limei did not know that Qu Sen had actually forgotten about the command bar of the software. When she heard that Qu Sen had some ideas about the software, she seemed very interested and encouraged Qu Sen to speak boldly.
Since the other party had asked him to speak, Qu Sen did not hold back anymore. He directly said, "Director, I have three thoughts about this kind of military software. First, I don't know if you have securely encrypted the data in the memory and virtual memory."
Qu Sen only said one sentence, and Sun Limei's originally smiling face instantly became serious.
The University of Wu-Yi made a lot of additions to the security certification and access management of the communication relay software. However, no one thought about the internal memory problem.
The internal memory and virtual memory of the computer were both used for caching. The virtual memory mainly cached the software framework, while the internal memory cached the communication information sent and received.
If it was really read by someone, even though there would not be a lot of content due to the limited amount of internal memory, there might be one or even a few important pieces of information. However, such a huge security risk was suddenly brought up by Qu Sen today.
Just because of this, Sun Limei put away the contempt she had for Qu Sen that was hidden in her heart.
Yes, it was indeed contempt. The leaders of the University of Wu-Yi did pay a lot of attention to Qu Sen, who found the security flaw in the system. However, a technical cadre like Sun Limei understood the process of Qu Sen obtaining the information in detail. At the time, Qu Sen really only relied on a little understanding of the Linux system and a bit of luck to succeed.
Although the skills that Qu Sen knew were completely acceptable in front of most people, in front of professionals like them, there was not much difference between him and a beginner.
The scope of his knowledge was still not beyond the use of computers. Although he might know some simple programming, the more advanced things were not something a college student could come into contact with.
In the end, Sun Limei, who was originally tasked by the leaders to complete the task, was shocked by Qu Sen's first sentence. She quickly took out a notebook that she carried with her and very formally recorded the information of "memory security". Then she said to Qu Sen, "Little Qu, you brought it up very well. Continue."
Qu Sen saw that not only did Sun Limei's expression become serious, but she also made a note, so he felt at ease. He pondered, "Okay, with this as a foundation, I won't embarrass myself today."
When he heard Sun Limei tell him to continue, he continued, "My second idea is about the issue of permissions. The relay station itself is just a communication and information relay device. Whether it should have the ability to check commands or not, I don't understand this point, so I won't comment. I'll just talk about checking the system itself.
I think it's best to do a compound authentication for the permissions. For example, it needs two or more people with permissions to enter the password and verify the biological information at the same time. Moreover, everyone who has received operational training should know what to do at every step.
Therefore, for example, the notification icon for fingerprint recognition, I think it's completely possible to replace it with an icon or a prompt that only trained people can understand. This way, if an outsider tries to hack the system, they won't be able to get the corresponding notification from the icon. "
"It's very valuable, please continue." Sun Limei had been quickly making notes in her notebook. She had almost completely recorded everything that Qu Sen said.
"There's one last point. It's actually just an idea. I don't know if it's unrealistic to implement it." Qu Sen first laid the groundwork. He saw that Sun Limei had raised her head to look at him and was quietly waiting for him to continue. He didn't waste any more time and continued, "I think that each relay device is only responsible for replenishing the signal in a certain area, so it doesn't need to receive all the communication from the command center to the various units below.
I don't know if the system can automatically add a label to every communication message when it's generated. Then, through this label, it can determine where the message is sent and which relay device needs to forward it. The relay devices in other areas of the battlefield don't need this information because the units within range don't need it, so they won't receive it at all.
This way, even if one of the relay devices on the battlefield is hacked, it will only affect the units in a certain area. It won't be like before, where the entire war zone's information will be sold out. "
"You're very right, this recognition can definitely be done!" After listening to Qu Sen's third idea, Sun Limei was completely excited. She even began to organize the ideas in her mind to modify the software.
After sorting out her thoughts, when Sun Limei looked at Qu Sen again, it felt like she was looking at a treasure.
She couldn't help but ask, "Little Qu, do you still have it?"
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