Qin Chuan and Qi Lanfeng left the small hotel two hours later.

In Qinchuan's memory, magnetic mines were invented by the Germans in the past year or two on a whim.

This kind of mine became very popular immediately after its invention. During World War II, it was dropped by German aircraft into the mouth of the Thames River in England. As a result, even after the British repeatedly used minesweepers to clear the channel, military and civilian ships continued to be bombed.

Shen, this puzzled the British man and made him depressed for a long time.

Later, it was the Germans who made their own mistakes. When air-dropping mines from aircraft, two magnetic mines were mistakenly dropped into the shallow waters of the Thames River, causing the magnetic anchor mines to emerge from the water. The British discovered and dragged them back to study, and then carried out

Understand what's going on.

In fact, the principle of magnetic anchor mine is very simple, and the manufacturing is not complicated. It is very different from the concept of high precision. To put it bluntly, it is just a novel idea.

Qin Chuan finally suggested that the magnetic anchor mine he made must be kept strictly confidential. At the same time, this anchor mine does not necessarily have to use a thunder cable. You can also cancel the thunder cable and sink it directly on the bottom of the water. As long as the amount of powder is charged

It is large enough so that thin-skinned ships such as inland river shallow-water ships can be directly sunk or broken by relying on the strong water pressure generated by the explosion without the need for a direct collision between the mine and the ship hull.

Qin Chuan even took out a pen on the spot and drew a sketch of a magnetic mine induction detonator for Chen Peng.

Liu Shugong, Chen Peng, and Secretary Yu, who originally just wanted to understand the characteristics and usage of anchor mines, did not expect that during this trip, they unexpectedly got an idea for a naval weapon. It is not an exaggeration to say that it was a design.

, because the key to this kind of magnetic mine is the magnetic detonation device.

Not only Liu Shugong, but also Chen Peng thanked Qin Chuan repeatedly and admired his amazing idea. Secretary Yu also expressed excitement on the spot that he would definitely report this matter to Navy Commander Chen and Qin Chuan when he got back.

Please give me credit.

Even on the way back, Qi Lanfeng was full of praise for Qin Chuan. He knew that except for Secretary Yu, the two people from the Navy were experts in naval operations and weapons. If they agreed and praised Qin Chuan, Qin Chuan's mine could be

Even if it really can be done, and if it is really done, once a war breaks out, even if the Japanese know that there are mines in the Huangpu River, it will probably take a lot of time to deal with it.

When the two returned to the third floor of the Global Business Group, Wang Jiali was wandering around in the corridor anxiously. When he saw the two coming back, he rushed over and pulled Qin Chuan towards the deciphering room. As he walked, he said, "Old Qi, Cheng Ji.

, you are back. The Japanese have sent a message. We have intercepted the message. Now the people in the deciphering team don’t know where to start. Write quickly and follow me to the deciphering room."

Upon hearing the intercepted telegram from the Japanese Naval Attaché, Qi Lanfeng and Qin Chuan immediately cheered up and hurriedly followed Wang Jiali to the deciphering room. In the deciphering room, several people gathered around the intercepted Japanese secret telegram and were arguing about how to proceed.

He started to decipher it, and when he saw Qin Chuan coming back, he immediately surrounded him.

Qinchuan took the intercepted telegram. The Japanese telegram was very long. They probably reported the contents of this false intelligence to their domestic navy in detail. It was not difficult to decipher this telegram. It must contain some information.

The content of their false information.

Qin Chuan wanted to find the content of the false information, but found that Wang Jiali did not hand over the false information to the deciphering team.

Wang Jiali also came to his senses, and hurried to the telecommunications room, found the manuscript of the false information sent to Secretary Qi, and asked someone from the telecommunications team to type out two copies and bring them back.

Qin Chuan held up the false information in his hand and said to the deciphering team, "This is false information we deliberately disclosed to the Japanese. The Japanese secret message we intercepted must contain this

The content of disinformation, especially some of the proper nouns in it, such as Wusongkou, anchor mine, mold country, semi-submersible, blockade, as well as Shanghai, Huangpu River, Kuomintang Navy, etc., these nouns will be used in large quantities

Appear in the message, that is to say, there are some number groups that will appear multiple times. Find these repeated number groups, and then try to determine which nouns these number groups represent, and then follow what I teach you.

The password compilation method is reversed, which is the plaintext attack and deciphering method."

"This is a process of trial and error, but as long as part of the password is deduced, the rest will be faster and faster. Now I announce that the deciphering team will be divided into two parts. Liu Jie and Zheng Yusen will be one group. You need to adopt the method I handed over to you.

Use your mathematical deciphering methods to decipher, and the proper nouns in these disinformation are the known conditions for your calculations. Of course, you also need to verify these known conditions repeatedly."

Qin Chuan looked at deputy team leader Li Mo, "Team leader Li will lead the others to help them do some auxiliary calculations and look up the proper nouns for the experiment."

After some arrangements by Qin Chuan, the five people in the deciphering team finally began to work in an orderly manner.

After arranging these, Qin Chuan took a piece of false intelligence and a copy of the secret telegram and dragged Qi Lanfeng and Wang Jiali out of the deciphering room.

When he arrived at Qi Lanfeng's office, Wang Jiali asked Qin Chuan in a low voice with some surprise, "Chengji, aren't you going to participate in the deciphering?"

Wang Jiali's question was exactly what Qi Lanfeng wanted to say, and he also looked at Qin Chuan.

Qin Chuan smiled bitterly and said, "Lao Wang, Lao Qi, you can't always rely on me to decipher the Japanese's secret messages. This is just the beginning. Once we fight with the Japanese in the future, we may not know how many interceptions will be intercepted in a day."

Ten sealed messages, even if you exhaust me to death, I still can't decipher them! These people always have to go through training, and this time with the help of false intelligence, it is a clear text attack to decipher, which is relatively difficult."

Qi Lanfeng nodded and said, "What you said is true, but if we just rely on them to decipher it, how long will it take to complete it?"

Qin Chuan looked at the pitiful Wang Jiali, smiled and said to Qi Lanfeng and Wang Jiali, "I will go home to decipher it tonight. If nothing happens, I can decipher it early tomorrow morning."

Qin Chuan knew that after the start of the Anti-Japanese War, Chinese mathematicians only used the Möbius function to decipher a Japanese secret message in just five hours. Although he did not have the IQ of the Chinese mathematicians, he was definitely not a rookie.

What's more, he still has plain text to help, and at least the mathematical tools he masters now are more advanced than those of today's mathematicians. Of course, this only refers to cryptography tools.

Qi Lanfeng and Wang Jiali were both surprised and happy when they heard that Qin Chuan could decipher it in one night. Qi Lanfeng immediately said, "Chengji, why are you going back to home? Just decipher it here. If you need anything, tell me

Just give me a shout and I will do it for you right away."

Wang Jiali also said, "Chengji, if you are here, if the deciphering team has any problems, they will come to you for urgent advice!"

Qin Chuan shook his head and said, "That's why I can't decipher it here. This is the first time. They must develop the ability to think independently."
Chapter completed!