Double-Cut During the War of Resistance: My Wife Came from 1937

"Weiwei, I saw some clones of dedicated decoding machines for sale, but I don't know if they've been cut off from the market."

Ma Hongwei said, "Take the Bombe bomber, for example. It was a Turing bomber specifically used to crack the German Enigma code during World War II. I just don't know if it could crack the Japanese code machine, and it's not easy for us to use either."

Xia Weiwei couldn't help but ask, "Are there any other ways?"

"some."

Ma Hongwei nodded and said, "We can also use AI to help write a Python script that can completely simulate the encryption and decryption logic of the Japanese Type 91 cipher machine, thereby enabling cracking operations such as frequency statistics and known plaintext attacks."

"Around 1937, the core cipher machine of the Japanese Army and the Ministry of Foreign Affairs was the Type 91 cipher machine. The structure of this cipher machine was somewhat different from the German Enigma system."

"It uses a single half-wheel + irregular stepping + vowel/consonant separation encryption, and has no reflector, so it is easier to decipher."

"As for the core principles of the Type 91 cipher machine, you can easily find that information online."

At this point, Ma Hongwei said to Xia Weiwei, "It seems we need to proceed in several steps."

"One is to purchase books, materials, and archives related to codes from World War II. You can take these directly to the leaders and have them arrange for dedicated personnel to handle them."

"Secondly, I plan to buy a few computers online and then use AI to help write some Python scripts. These computers must be transported to the Eighth Route Army headquarters so that the two commanders can personally oversee them."

As he spoke, his expression became extremely solemn: "This computer, also known as an electronic computer, is the most cutting-edge technology of the future. It must not fall into the hands of the American imperialists, nor can it fall into the hands of the Kuomintang and the Japanese invaders."

"It should be noted that the United States' first electronic computer, ENIAC, was not officially put into operation at the University of Pennsylvania until February 15, 1946."

"The first electronic computer was designed by the United States during World War II specifically for the rapid calculation of artillery ballistic tables. In other words, it was designed specifically for war, so we absolutely cannot let this computer fall into the hands of any other power."

"After all, ENIAC used 18800 vacuum tubes, 7200 crystal diodes, and about 15000 relays, occupied 170 square meters, weighed 30 tons, and consumed about 150 kilowatts at full load, but could only complete 5000 integer additions, 357 multiplications, and 38 divisions per second."

"The computer I want to buy can perform 200 billion operations per second on a single core, and the multi-core computing power of the whole machine exceeds 10 MIPS. Not only is the computing power vastly different, but it is also smaller in size and consumes less power."

"Besides computing power, it has many other functions. If it falls into the hands of other forces, it will cause extremely serious disasters."

"Therefore, this computer must be personally supervised by the two bosses. If things go wrong, it must be completely destroyed and not allowed to end up as a single part."

"I see!"

Xia Weiwei nodded emphatically.

She also understands the impact of future technology on another time and space.

Whether it's Japan, the Kuomintang, the United States, or the Soviet Union, they are all enemies of the new China.

These future high-tech products, naturally, cannot be obtained by them.

Ma Hongwei said, "Then let's start choosing a computer now!"

These computers are mainly used for local deployment of AI, running cryptanalysis scripts, and processing historical materials related to World War II cryptography. Therefore, the GPU's video memory is required to be the most powerful, followed by memory capacity and CPU multi-core performance, while high-speed storage is the least important.

The total price per unit was 28500 yuan, and Ma Hongwei bought four units.

He didn't dare bring too many with him; the fewer the quantity, the easier it would be to guard, and if it needed to be destroyed quickly, it could be disposed of rapidly.

"By the way, with the increasing number of electrical appliances these days, we should install more solar panels."

After placing the order for the computer, Ma Hongwei also bought 400 solar panels and 400 batteries.

Electricity is indispensable for electrical appliances, so naturally they cannot be without it.

Although Ma Hongwei had already brought some solar panels and batteries with him.

However, Xia Weiwei had previously brought over tens of thousands of night vision devices, which are all heavy power consumers.

These night vision devices all use batteries, which can be pre-charged and stored.

Even so, the existing solar panels and batteries were not enough.

Because whether it's a telegraph machine, a walkie-talkie, or a mobile phone, they all need to use electricity.

As for Ma Hongwei's previous concern about the photovoltaic panels being too conspicuous, these solar panels are quite small and can be easily carried away and stored away. If they are discovered, they can be quickly brought indoors.

Moreover, these will not be used centrally, but will be distributed to each brigade and each regiment.

After purchasing these items, Ma Hongwei then searched for the books on JD.com.

To his disappointment, none of these books were available; he couldn't find them at all.

"Oh, right, there's one more place!"

Ma Hongwei suddenly thought of Xianyu, which claimed to be the "Chinese Dark Web".

That thing has everything you could want.

Ma Hongwei quickly downloaded Xianyu (a Chinese online search engine) and started searching.

"No wonder it's called 'salted fish' (a slang term for a cheap, low-quality product); it even has this item that JD.com doesn't have!"

Ma Hongwei tried searching and immediately found the books he needed.

However, there are no physical books on Xianyu; all that's available are electronic versions.

"An electronic version is fine; something is better than nothing!"

Ma Hongwei thought to himself, "Moreover, if it's a physical book, and the distance is very far, who knows how long it will take to ship it over."

He felt that the electronic version also had its advantages.

It could even be sent directly to a computer for Eighth Route Army confidential personnel who used computers to view.

Those people were all under strict guard by the Eighth Route Army. Even if they found out, there was no need to worry about these things coming from the future.

Ma Hongwei believed that the leaders of the Eighth Route Army headquarters would take good care of them.

"Let's buy them one by one!"

Ma Hongwei immediately contacted salted fish vendors and purchased them online.

Ma Hongwei didn't just buy from one company; to check for errors, he bought from several companies and compared them all.

After verifying that everything was correct, Ma Hongwei uploaded it directly to his computer, connected the printer, and printed it out.

People at the Eighth Route Army headquarters could use computers, but those in northern Shaanxi did not.

Ma Hongwei felt that this information should also be very useful to people in northern Shaanxi, and that it could help cultivate a group of talents.