Zhu Zhonghua walked to the corner of the basement as he spoke, and took out a laptop from a metal sealed box. Pen "Fun" Pavilion www.biquge.info

It was the first time Liu Fang had seen this kind of thing, and he was curious: "Grandpa, what are you holding?" ”

"This is also a computer, called a laptop, which is a more integrated computer."

Liu Fang looked at the much lighter shape of the laptop than the desktop, and couldn't help but widen his eyes: "It's so advanced!" ”

Zhu Zhonghua nodded: "For domestic people, this is indeed a very advanced thing, but it is very common abroad, and it is still too backward in China, especially in the field of science and technology, which cannot be compared with Western developed countries at all." ”

Liu Fang deeply agrees with this, he has been to France, and the degree of development in France is better than that of many streets in China, such as cars that only a very small number of people can afford in China, and they are all over the streets in France.

Zhu Zhonghua opened the laptop and pointed to a piece of software installed inside: "This is the firewall software developed by my old friend, it has not been promoted yet, only a few people have it, it is a test nature, I know you are not convinced, then you can try to crack it, see if it can be successful." ”

Liu Fang hummed and began to analyze.

After looking at it for a while, Liu Fang found that this firewall software had added an encryption program, and the core parts of the firewall software were all encapsulated inside this encryption program. In other words, if you want to crack this firewall software, you first need to crack this encryption program.

For others, this is almost impossible to do, unless a supercomputer is used to crack it by force. The previous software was relatively easy to crack for a supercomputer, but with software with encryption programs, it became very difficult to crack even for a supercomputer, at least it would take many times longer than before.

Liu Fang didn't speak for a long time, he frowned, and he seemed a little embarrassed.

Seeing this, Zhu Zhonghua smiled: "How is it?" You know how difficult it is, right? ”

Liu Fang heard this and said in a deep voice: "Although it seems difficult, it is not impossible to crack it, as long as you figure out the encryption algorithm of this program, you can crack the firewall." ”

After Liu Fang finished speaking, he began to type on the keyboard quickly, and Zhu Zhonghua was shocked: "Why are your hand speeds so fast!" ”

Liu Fang replied while busy: "This is all practiced, in order to improve hand speed, I specially wrote a software, this software can display different letters and symbols at a very fast speed, when practicing, you need to follow the letters and symbols it displays, hit the corresponding keys on the keyboard, as long as there is a little error, the game will be over." ”

Zhu Zhonghua was stunned for a long time, and then laughed self-deprecatingly: "It seems that I am really old, the future is the world of you young people, in order to improve your hand speed, you can even think of this method." ”

Neither of them spoke, and Zhu Zhonghua quietly watched Liu Fang analyze the encryption algorithm of the firewall's core program.

After nearly ten minutes, Liu Fang finished his work, and he smiled slightly: "It is worthy of being able to become an old friend with grandpa, this person's encryption technology is so strong, but I still cracked it." ”

Liu Fang quickly knocked out the detailed characteristics of the encryption method, and also made a note in the back very intimately.

Zhu Zhonghua was stunned when he saw this scene: "I know your computing ability is terrifying, but I didn't expect it to be so terrifying!" You know, this is an anti-logical way of encryption! ”

What kind of password is the hardest to crack in the computer world? The answer is the code of anti-logical thinking, which is commonly known as the code of reverse thinking.

Computers are very logical, but they can't think, and they only execute the programs that people have set in a very rigid way.

For example, if you want a supercomputer to execute the cracking instructions, you first have to equip it with a cracking software, which contains various algorithms.

Computer masters have strong logical thinking, and generally the cracked software they write will also have a strong logic, if you want to restrain them, you have to adopt an anti-logical way of thinking.

That's what Zhu Zhonghua's old friend did, not to mention, the effect is very good, at least Zhu Zhonghua can't crack it.

It's a pity that this guy met Liu Fang, Liu Fang's way of thinking was originally very special, otherwise he wouldn't have been treated as a mental illness by teachers and classmates when he was studying. Maybe this kind of encryption algorithm with reverse thinking works well for others, but for Liu Fang, it's just a few more turns in his head.

Looking at Zhu Zhonghua's shocked expression, Liu Fang looked very calm: "Grandpa, the firewall is indeed very powerful, as far as the current point of view, it can withstand the attacks of the vast majority of hackers, if someone controls it, even it is difficult for me to crack it, but as you said before, in the computer world, the birth of any new technology will lead to the birth of the corresponding pair of technologies, which is the opposition between spear and shield, I personally think that the biggest role of the firewall is not how many hackers it can isolate, Rather, it will make hackers' intrusion methods more hidden, which will further exacerbate the confrontation between technologies and, of course, accelerate the evolution of computers. ”

Liu Fang paused a little here, and then continued: "For example, I never thought that I could add a defensive shell to the core part of the software, and after seeing the firewall software, I will make the software I write in the future more secure and stable, which is equivalent to promoting my progress." ”

Zhu Zhonghua looked at Liu Fang's slightly immature face and sighed: "Originally, I thought it was a natural thing for me to be a teacher for you, but now it seems that this kind of natural righteousness seems a little unreliable." ”

Zhu Zhonghua said this: "But the defensive shell you mentioned is still very vivid, my old friend called this an encapsulated shell, compared with the two, I think the name you took is more appropriate." ”

Liu Fang said curiously: "Grandpa, how many old friends do you have?" What do they do? ”

"I have six good friends, all of whom work on computers, such as this old friend who developed the firewall, who works at the Oak Ridge National Physical Laboratory in the United States, and is currently working on the fool virus you developed."

Liu Fang was slightly stunned: "He's studying the fool virus?" ”

Zhu Zhonghua said with a smile: "Yes, but he hasn't made any progress yet, the last time we met, he poured bitter water on me, saying that you kid is not a human being at all -- by the way, the U.S. government has also allocated 10 million US dollars of special scientific research funds for his research, which shows that your stimulation to Americans is really not small!" ”