I really don't want to lie down and win

"what?"

"Is the open class over?" Xu Mang asked with hazy eyes.

"Break halfway."

"There is still an hour and a half." Xueba said.

"Oh..."

Taking out his notepad and pen, Xu Mang began to copy other people's notes.

Copying and copying, he found a problem.

Huh?

Why does it feel wrong!

Xu Mang has hacking skills, and the skill value is quite high. This is related to his usual hacking of those money-losing websites. Gradually...he copied a lot of knowledge related to hacking, although some knowledge needs to be upgraded to level two , but for now, the knowledge he has mastered and understood is enough to deal with the first-class masters in the country.

"System, is there any problem here?"

After system identification, if you want to know, exchange value: 1000 hacker skill value

After system identification, if you want to know, exchange value: 1 physical skill value

It seems the problem is a bit bigger on the computer side than the physics side.

otherwise,

It is impossible for the exchange value of physical skills to reach one.

"classmate?"

"Can you translate it for me?"

......

Chapter 2: Quantum Hacking

Xu Mang didn't know how to attack quantum communication at all, but he knew a truth. Quantum communication passwords cannot be cracked by mathematical methods unless physical methods are used to attack quantum communication equipment. Therefore, when the equipment is absolutely safe, quantum communication It has absolute confidentiality, in other words, it will never leak.

In the notes of this top student, Xu Mang saw an unreasonable paragraph, using injection locking to crack quantum key distribution.

After systematic analysis, Xu Mang knew that this technique was a physical attack method, not a mathematical attack method, and used the mobile phone to find out the concept of injection locking.

It turned out that it quoted an irresponsible chapter written by a certain column of MIT Technology Review, and this irresponsible chapter directly reproduced the chapter about attacking quantum communication in the preprint.

The so-called preprints are manuscripts that have not been peer-reviewed, and their value is not very high. There is a huge gap in credibility with traditional journals, and there is also a huge difference in quality.

Some chapters do have a very high level, but they are waiting for the review of traditional journals, and many chapters have many problems, and even some are unsightly.

Xu Mang also found the article about attacking quantum communication with his mobile phone. A certain team built a prototype quantum cryptography optical path, and then used injection locking to steal the information, so all of this was pre-set. Done stealing.

Using his knowledge of hacking, Xu Mang analyzed that the method of using injection locking to crack quantum key distribution is actually similar to the side-channel attack in traditional hackers, playing crooked ways.

such as,

On a computer with a power-on password, install a collector in the corner of the chip tube responsible for starting the computer, copy the power-on command directly, and then play it again.

Another example,

Today's car ignition is all electronic locks, and the original key is needed to match the code, but in general, some thieves just dig a hole, pull out the live wire, touch it and it's over. Anyway, what the key does is nothing more than It is the switch closure problem of the two wires.

of course,

Xu Mang wasn't questioning the article that attacked quantum communication. This article itself existed as an academic research, but the facts were distorted by some bad media, and then accidentally ignored by experts.

And Xu Mang just wanted to tell Makarov that just installing something called an optical isolator can prevent such a thing from happening. Although any device is imperfect, it is better to add it than nothing. At least the system tells itself to add it. an optoisolator.

however,

Although he knew that the English name of an optical isolator was optica isoator, there were still many highly professional words in it, and Xu Mang expressed great pressure on this.

simply,

Found this master student.

"translate?"

"What are you going to translate?" the academic bully asked curiously, "My English is average."

"Just be better than me."

"I'm new to physics, so I don't know much about it." Xu Mang said awkwardly: "I found that Makarov may have been negligent and quoted a wrong chapter. Although this problem is no longer a problem, the pursuit of It's hard for me to be perfect."

"what?"

"mistake?"

The school bully looked at Xu Mang in surprise, questioning the authority... Is this really okay?

Science requires questioning in order to progress, and academic masters naturally understand this truth, but under normal circumstances, what does not correspond is strength, and questioning authority is a very dangerous and stupid behavior.

"you..."

"Are you sure?" Xueba reconfirmed.

"Yes!"

"Translate for me." Xu Mang smiled.

The enthusiastic Xueba nodded and said silently: "I'm only in charge of translation, I don't care about the rest."

"Oh..."

after that,

Xu Mang and the enthusiastic student found Makarov, an expert in quantum hacking, and briefly explained the problem. At first, the bearded man was a little strange, but then he realized that he had indeed misquoted a certain report.

in fact,

This mistake was harmless, but a mistake was a mistake, and Makarov was very grateful for Xu Mang's correction.

"He is thanking you."

"Ask you...how did you...discover this problem." The enthusiastic student said to Xu Mang.

"Oh..."