"Premier Xu, there is a civilian working group that sells a special machine to the military, which is said to be able to encrypt documents very tightly to the point where they are almost impossible to decipher." After completing the work report, Zhan Tianyou, Minister of Industry, hesitated for a moment and said to Xu Jie.

"Minister Zhan, have you crossed the line, since this matter was recommended to the military, then at least the military should come forward to report to me, and your Ministry of Industry will come to me, but it is a bit overstepping." Xu Jie said half-jokingly and half-seriously. Xu Jie never doubted Zhan Tianyou's character, but interfering with each other was not what Xu Jie wanted to see.

"This matter is not only related to the military, I feel that it has something to do with various departments, if this encryption method can be extended to the entire government department, then the security of radio and cable communication between us will increase exponentially, at least for the time being, we do not have the ability to decipher, and the Army and Navy Intelligence Departments will not be able to decipher the telegrams and documents that have been encrypted in this way. Moreover, this encryption method is completely reversible, even if the operator does not have any foundation, as long as he understands the manual, he can also use this machine to directly decipher, that is to say, this machine is an encryption and decipherment machine. Zhan Tianyou said very seriously.

"It's not so mysterious, is it? Is there anything else in this era that can't be deciphered? Xu Jie showed a hint of mockery. If I'm not mistaken, not only in China, but also in European countries, the passwords used are written by humans. The whole writing process is not only time-consuming, but more importantly, extremely easy to decipher. Because the so-called password is nothing more than a simple replacement process. For example, the simple trick of replacing A in plaintext with C in the text is just a few more than numbers to letters, and letters to numbers a few more times. ”

"This decipherment is simple. Collect a few more telegrams from the other party, and then make a probability table of fixed bytes, and compare the actions and transfers of the other party, then these high-frequency words can correspond to some places, and after finding the keywords, the remaining problems will be solved. This method was used by the Arabs in the 9th century C.E. It's still used this way, and it's not difficult. Xu Jie looked at the other party's surprised expression and was a little complacent.

"Therefore, I strictly limit the number of times I use the top secret password of the Chinese government, and I must use a new one every quarter. This fundamentally reduces the sample size of the probability distribution table, and I would estimate that some scrap code will be added to increase the workload of the other side, and to be honest, the current military intelligence bureau is doing what I think. It is not an exaggeration to say that he is my apprentice. Xu Jie said with some smugness.

"Boss Xu. Don't even say it, the password encryption method you encountered this time is really not what you said. If we can't decipher such a simple code, the guys from the Army Intelligence can go home and pick up the baby. Just when Xu Jie was telling Zhan Tianyou how to decipher the code, Peng Yi pushed open the door and walked in!

"Boss, your apprentice is now beaten and can't find the north, are you thinking about helping to save some face? If we can't save face, I think it is still very necessary for the government to equip this kind of encryption machine, at least our military and industry personnel can't do anything. Peng Yi said with a smile.

"It's a bad habit for you to break into the prime minister's office and not knock on the door. I decided to deduct half a year's salary as punishment, and because of my extreme disappointment with the work of the Army Intelligence Directorate you lead. I have decided to deduct another half a year's salary, and in the worst case, if the government buys such a machine, then you will use your money to equip the General Staff with one. Xu Jie said while knocking on the table.

With a bang, the teacup in Peng Yi's hand fell to the ground and turned into a pile of fragments. "Peng Yi, you're too much. I'll fine you for one year's salary. Your family is not supported by your salary, even if you lose your salary in the future, your family's property will not live well? "Xu Jie is really a little unhappy now! In fact, he was joking just now, he didn't take it seriously, and these old brothers went all the way, Xu Jie was very casual when he was below.

"Prime Minister, even if you don't give me two years' salary, but if you let me pay for one, it's really not cheap, and the price of an encryption machine is as high as 3,000 pounds." Peng Yi said depressedly.

"Just kidding, huh? What about grabbing money? Tell me what the hell is going on? It wasn't so easy for me to make money back then, a machine sold for 3,000 pounds, and if the government of the Republic of China used this thing, how much money would it cost. Xu Jie was really interested in this matter, and he really wanted to know what it was that was worth so much money!

"You take a look at the material first, this is a clear code message, and then the user uses the encryption machine to input and get an encrypted message, a total of two inputs, the result of these two times to get a completely different message! It's unbelievable that one file can be encrypted to get two completely different ciphertexts! Peng Yi immediately handed a document to Xu Jie.

"Look at these two encrypted messages, not only is there no connection, but even in one of the messages there is not even a single duplicate byte! It was a bunch of gibberish, and I started to think they were playing on us, so the intelligence bureau wrote a document for one of them to see, encrypt it, and then let the other person decode it in reverse without knowing it, and it turned out to be a good word. It's horrible. Peng Yi continued.

"We wondered if they were using some special method of compiling passwords, but we mobilized more than 200 people to draw distribution tables and looked through all the coding methods that had been recorded, but we couldn't figure out why. It's horrible. Peng Yi chattered in Xu Jie's ear like an old woman.

"Holy! This can't be a traverser, right? Xu Jie glanced at the ciphertext that looked like garbled characters, and the shock in his heart reached an incomprehensible level! Although Xu Jie is not a cryptography major, he still has some understanding as a navy, and Xu Jie still knows this kind of encryption technique, but this technique first appeared in 1918 and came out in 1920! And when it really made it famous, it was during World War II, this encryption method relied on a kind of machinery, and this kind of machinery is called the Enig cipher machine! Also called a dumb puzzle machine!

"Where is this man? Arrange it, I want to meet him! Xu Jie said with a straight face.

"Premier Xu, do you see some clues?" Peng Yi asked in disbelief. Although Peng Yi admitted that Xu Jie was smarter than him, better than him in all aspects, and broadened his horizons, Peng Yi really couldn't accept that he and a lot of people hadn't figured it out for a month, and Xu Jie found out in less than a quarter of an hour! This is unacceptable! It's an insult to your own intelligence! No, it's an insult to the entire intelligence service. If it's that easy, why would they do it? Isn't it possible to solve all the problems in a quarter of an hour after handing over Xu Jie?

"This encryption method, I thought of it back then, but I couldn't implement it, and then I gave up when I was busy, but I didn't expect it, but now someone actually realizes it." Xu Jie said lightly, like a magic stick. "The kid who did this thing is really powerful, but if he wants to make money from me, he still needs some heat. It's not all your MIA's fault, this kind of thing is the first time in the world, I forgive you, but you must do a good job of secrecy and don't let anyone know. Xu Jie said after the most reluctance.

"Boss, it's a woman who invented this machine, and it's a very beautiful little girl, pay attention to the words." Peng Yi reminded beside him. "By the way, Mr. Xu, is it necessary for you to understand the structure of that machine?" Peng Yi added

"Don't you feel blushing when the whole MIA let a little girl play tricks?" Xu Jie highlighted a small word! "Needless to say, I already know what this thing is, this thing is really useful, it will go into our government offices, of course, the price will definitely not be high!" Xu Jie said confidently.

"Boss, can you tell me a little bit about the mechanics of this machine? Is there a way to decipher this thing, if it can be deciphered, I'll find it back first," Peng Yi asked.

"Tell you how I have a sense of superiority." Xu Jie smiled evilly. "As for the principle of decipherment, I also know that encryption and decipherment themselves are a pair of natural enemies, and there is no absolute secret. However, the conditions required to decipher it would be very demanding, at least for a long time, almost impossible. Regarding the second question asked by Peng Yi, Xu Jie thought about it and said quite stupidly.

At the same time, in a luxurious suite of the Army Hotel, a little girl's hand shook slightly, and the chopsticks fell on the dining table. "Sister Su Jing, what's wrong?" A person next to him asked. "Nothing." Su Jing shook her head vigorously and said. "Xiaoyun, is there a reply from the military?"

"They said that there would be a reply tomorrow, and they also expressed their intention to buy, but they thought the price was too high." Ma Xiaoyun said with some concern. "After all, they represent the country, and although our encryption machines are advanced, private individuals and the state will always do business with the tiger. It's okay to lower the price when necessary, anyway, the only thing we can do is us. ”

"What we are selling is not an encryption machine, but a country's communication security, and the meaning of this is not at all measurable by taking money. We can guarantee the security of communications in the Huaxia Republic for at least 30 years, they should understand. Su Jing said confidently. As long as they can't decipher the code, then we've won! Having said that, Su Jing still felt a little uneasy. She hadn't felt that feeling for a long time, and once she had this feeling, it meant that she was very likely to be unlucky!

Yesterday the subscription tragedy reached the extreme. It's just a little more than half of the usual subscription——! We look forward to your support——! (To be continued......)