"Do you really know martial arts?"

After dodging the crowd of onlookers, Zhang Ning sat in a gazebo on the campus of Yan University.

staring at his female bodyguard without turning his eyes, Zhang Ning was still surprised for a while.

"Oh my God, your martial arts are too powerful, Sister Paper, Miss Wanqing, no, Master, you can teach me martial arts."

Zhang Ningpo was not in a hurry, he was cheeky and showed favor to Wanqing.

"Nope."

With a cold face, two words came out of the corners of her mouth.

"Why not, little master, since I was a child, many people have said that I have a good talent. If I hadn't met the Master, I would have been practicing martial arts a long time ago. ”

"You say you're talented?"

Wanqing swept Zhang Ning again, and laughed with a smile, "The qualifications are worse than ordinary people, and the talent is good, which one of the rivers and lakes lied to you." ”

"Oh, no."

Zhang Ning was speechless, "Could it be that my qualifications are very poor, why don't I know?" ”

"Okay, no matter whether your qualifications are good or not, in short, this is the martial arts of the sect, I can't teach you, you still have to die of this heart."

"Hey, little master, you can be flexible. You see, you are protecting me now, how tired you are, you have to follow me every day, it's too troublesome. Why don't you teach me a few tricks to protect yourself, and you won't follow me every day in the future, right? ”

"Still no, you're too old now, and practicing now won't do you any good. I think you'd better take care of your injuries, don't be okay. You see you're like this, and you're running to die. If it weren't for this girl's action, I'm afraid you would have to lie in the hospital for half a month. ”

"I knew Master, you were there."

Zhang Ning took a bite of a master, and he didn't blush.

It's just that Wanqing didn't agree to anything, so that Zhang Ning was not depressed.

……

"Hey, what are you doing, guys, writing programs so seriously?"

Returning to his residence with a depressed face, Zhang Ning saw several roommates typing the code very seriously.

"Boss, you're just in time, get on the forum."

"What's going on with the forum?"

"There's a guy who calls himself Matsumoto to challenge us on our forum."

"Matsuhonda, Japanese?"

"Yes, the other party claimed to be a Japanese student who came to our Yan University, and said that he wanted to challenge the level of the computer science department of Yan University."

"Damn, these guys are idle."

The Korean Yankees on the front foot came to challenge the Wushu Association, and at this moment, a little Japan came to challenge the computer again.

Landing on the forum, Zhang Ning found the challenge post.

I have long heard that Yan University is one of the highest universities in China, but after coming to Yan University for more than a year, I did not feel that this legendary highest university in China has anything extraordinary. I originally thought that there were a lot of people in the computer science department of Yan University. It's just that when I visited again and again, I was disappointed. What disappointed me even more was that it was as small as Yan and as big as the whole of China. Obviously, there are many people who are inferior to Japan, but on the Internet, there are always voices attacking Japan and scolding Japan.

I don't know why you hate Japan so much, is it because Japan is stronger than you in China?

I know that there are many people who don't want to admit it, and they have always thought that your China is a 5,000-year-old country, and you have a splendid culture.

I'm tired of hearing these words here in Huaxia.

Well, you're very good, but I don't know if you have what it takes to take on a little challenge from me.

The content of the challenge is very simple, I have been working on encryption recently, and I have also written an encryption software, and whoever can crack my encryption software, then, I will admit that China is not without everything, at least there is something worth learning.

The challenge post looks politely written, but, according to Zhang, it is similar to the behavior of the Korean Korean stick.

"How's your research going?"

Zhang Ning did not reply to this, but looked at the three roommates.

"The headache of research, we just learned a little bit of computer cryptography, and now we see if we can crack it."

Liu Zhangze frowned from time to time, obviously having a headache about this new contact with cryptography.

"Yes, this computer esoterics is too complicated, involving not only computer knowledge, but also a lot of arithmetic, I have a headache to death."

Chen Xiaodong also grabbed his hair with a headache, and there was nothing he could do about this encryption software.

"Boss, I wonder if you can untie it?"

"Well...... this"

Zhang Ning didn't shake his head, nor did he nod.

Cryptography is a very early science, long before computers, there was cryptography in the world.

Especially after the outbreak of World War I and II, cryptography has developed rapidly.

Until now, in the computer age, cryptography has also entered computer cryptography. Although computer cryptography does not require special knowledge for the average user. However, computer cryptography is widely used in all corners of the Internet. In particular, the content of some trade secrets needs to be protected by encryption software to ensure that the information is not leaked.

It's just that, after all, China lags much behind other countries in the field of computers, let alone computer cryptography.

Even if the three roommates are all rated by Zhang Ning as smart people, there is still no way to do this computer cryptography.

"What to study, what to study, you are not engaged in cracking codes, what are you doing researching this. If you want to study, you are also a graduate student in the Department of Computer Science of Yan University, and they are doing the right research. ”

"No, boss, aren't we in a hurry. Besides, it's been almost three days now, and if in a few hours, the software hasn't been decrypted, then it's really going to be compared to the Japanese. ”

"What can be compared, can't we crack his encryption software, and we in China can't compare to Japan? Besides, his method of breaking software encryption is too simple. ”

"Ah, boss, do you have a way?"

"It's not that there is no way, it's just that I don't want to crack it."

"Boss, say it quickly, if you don't crack it, sue us, and we'll crack it."

"Well, since you want to crack it so much, then I'll tell you a simpler way. Don't study his algorithms, don't study encryption and decryption, you have to study this, you have to try to break your heads. Don't you know how to use the super computing power of computers to crack it? ”

"The super computing power of the computer, boss, we don't understand what you are saying."

"Stupid, what is the current frequency of your computer, there is 1G, there must be. So 1G main frequency, theoretically speaking, the computer can run more than 1 billion times per second. You might as well write a piece of software yourself, from 1 to 1 billion, a password and a password on it, I believe that it only takes 1 second for the computer to set the password for you. ”

"Ah......h

Everyone was stunned, "That's fine." ”

"Why not, if you don't try, how do you know it won't work?"

This is a tried and tested trick to crack the wifi password in later generations, and most of the wifi cracking software also uses this method. Of course, not all passwords can be broken. If the password set by the other party is just a pure number, this is very quick to crack. But if you add letters or something, if you want to crack it, it's a headache.

Of course, relatively speaking, although this method of cracking is simple, it is definitely a universal solution. Even if a personal computer can't crack it, for a supercomputer, the computing power of tens of billions of times per second, even if it is a password with letters, can still be broken in seconds.

"Then let's try."

Everyone felt that Zhang Ning was reasonable, united and cooperated, and soon wrote a fool-like software to crack the code.

It's just that this time, something went wrong, and after a few minutes, the password was not cracked.

"This, mistakes, mistakes, I still haven't said a word."

Seeing that it could not be cracked according to such a method, Zhang Ning knew that the password of this little Japan could not be a simple number, and he also added letters. Judging from the combination of 26 letters and 9 numbers, personal computers must reach at least 100 billion levels per second before they can be cracked by fools. But apparently, today's computers don't have such a strong feature.

However, not being able to crack does not mean that it cannot be cracked, in fact, there are many ways to crack it, and it is not necessary to crack it according to honest encryption and decryption. Most hackers, they crack computers, crack software, crack games, they will not use this honest decryption method, they will use simpler ones. For example, look for vulnerabilities in this software. Then, under the exploitation of this vulnerability, in the end, there is no need to crack the password, and he successfully enters the system, or, modifies the permissions.

It's just that Zhang Ning didn't use this method, he used a method that seemed simpler.

"Dude, add the three letters sbt to your cracked software, and then, you try to crack it again."

"SBT, boss, what do these three letters represent?"

"You guys are stupid, didn't you find out, is this Matsumotoda's pinyin?"

"No, boss, do you think Matsuhonda will use the letters of his name and add some numbers as passwords?"

"I don't know if he will, but, Xiaodong, I know your QQ password, that's it."

"I rely on ......"

Chen Xiaodong almost vomited blood, and everyone was amused by Zhang Ning.

"Hurry up, what the boss said makes a lot of sense, don't say it's you, brother's password is also my pinyin.,go,go,try again.,Maybe.,It's done.。

As a result, Zhang Ning's idea was correct.

After the trio added the three letters of SBT, the password was finally cracked.

"Boss, you're my idol."

"Oh my God, boss, how did you come up with it?"

"Boss, I want to worship you as a teacher."

The password was cracked, and the three of them looked at Zhang Ning with stars in their eyes.

This is simply amazing, move your mouth, and without using your own hands, you can crack the password.

Let's ask, how many of the students of Yan University can do it?