Chapter 054 Deciphering the high-level password (Thank you)

Time flies! It is eleven o'clock in the morning on June 12th, and Yu Zecheng received a telegram from the 27th Army of the Anqing Front to the Military Commission. He easily deciphered it!

[The Military Commission, the Japanese Marine Detachment carried out sneak attacks on Anqing and carried out multiple attacks! Our army had to evacuate at a disadvantage in its firepower!]

I persisted for a long time more than in history! It may not be necessary, maybe I withdraw my message first and then send it.

Yu Zecheng experienced it personally, and then he truly understood why the Workers' Party could seize power across the country under such a weak situation? You should know that during the war of resistance across the country, the Eighth Route Army and the New Fourth Army had only more than 60,000 troops, and more than 3 million troops across the country. In other words, if calculated based on the number of workers of the Workers' Party, there were 50 units in the country that could seize power across the country. In the end, the Workers' Party stood out.

This reflects from the other side how corrupt and useless the Kuomintang should be!

Soon, Yu Zecheng received a message from the Military Commission to the 27th Army:

[Anqing is a strategic location. Your troops abandon famous cities lightly, which will cause shock to Wuhan; your troops will quickly counterattack and retake them as soon as possible. Don’t laugh at the friendly countries!]

This is the origin of the famous saying that has been circulated for a long time in later generations: "Abandon a famous city lightly and laugh at the friendly countries!"! It is like the "journal laughing stock" of the Lanfeng Battle!

Two hours later, Yu Zecheng received another message from the 27th Army:

[The 26th Army of Xu Quanzhi on the left wing was defeated by the 6th Japanese Division, exposing our flanks. If we counterattack Anqing, we will be surrounded by the Japanese army! Who will fight against Japan if all the soldiers are dead? In order to preserve the anti-Japanese force, please evacuate in the direction of Wuhan!]

Subsequently, Yu Zecheng did not receive a telegram from the Military Commission and the 27th Army.

Yu Zecheng shook his head helplessly! Then, he began to worry about the 16th Army! The Japanese army may have sneaked attacks on Madang fortress on the 24th.

--

In the evening that day, Lu Zongfang suddenly contacted Yu Zecheng.

Not long afterwards, Lu Zongfang came home.

Yu Zecheng asked Wu Yimei to go down to see the wind again.

Lu Zongfang and Yu Zecheng came to the window, and he said, "The Director now regards you as a trump card and intends to transfer you to the Telecommunications Department!"

Yu Zecheng knew that Lu Zongfang wanted to let him go very much. He said, "Old Lu, I still have your support now. Once I go to the Telecommunications Department, I will be tied up and I will not be able to use my talents at all. As for the importance of the Telecommunications Department, it is not a problem at present."

Yu Zecheng then lowered his voice and told him the incident of deciphering the Military Commission's code in Lu Zongfang's ear. He also emphasized that it was his own deciphering, and no one knew about this, not even Wu Yimei.

Lu Zongfang widened his eyes! His surprise was conceivable! Because there were not many people in the country who knew the code of the Military Commission.

After Yu Zecheng said this, Lu Zongfang felt that Yu Zecheng really had no need to go to the telecommunications department. He also said: "The director may be worried about it first! Secondly, he should be trying to strengthen his strength and he should install a few people in. You must be mentally prepared."

Yu Zecheng knew that this was a matter of time sooner or later, so he said, "Once they come, I can't go out easily, let alone spend the night. But what should I do with Huang Jiaqin?"

Lu Zongfang obviously considered it in advance, and he said: "The Wuhan Battle has begun! We may not have much time in Wuhan. You can find a way to tell her, let's bear it for a few months! Let's talk about it when we arrive in Chongqing."

Yu Zecheng was in a very complicated mood at this time! He was reluctant to do less work; he also felt relieved! Every time he went out for a "meeting", he felt sorry for Wu Kuiyuan and Wu Yimei. He didn't have to go out now, so he was relieved!

Yu Zecheng said: "Okay!"

Lu Zongfang said: "As for the matter of the four subjects, it doesn't matter for the time being. You are the trump card of the three subjects and have already made the four subjects look at them with admiration. As long as you don't let go, the three subjects will not let you go for the time being."

Sure enough, the next day, Corey sent five security personnel and three telecommunications personnel, and added two more radio stations.

At the same time, the restaurant downstairs was closed. The kitchen of the restaurant continued to be preserved and became everyone's canteen.

In this way, Yu Zecheng's group number increased to fifteen! He enjoyed the group-level treatment in the second department! However, the level is still "team" level and is directly led by the China Working Group.

Although no one in the group restricted Yu Zecheng's actions. He knew that his every move would be monitored. Therefore, he found an opportunity to send a signal to Huang Jiaqin.

After Huang Jiaqin received the signal, although she was very sorry, she knew that things could not be violated! She could only bear it temporarily.

--

How did Yu Zecheng decipher the code of the Military Commission?

The National Government and the Military Commission used German systems, including guns and ammunition, before the early days of the War of Resistance Against Japan, and of course, the same was true for the cryptographic system.

The principle of the cryptographic code given to the Military Commission by Germany is the same as that of the "Ennigma" machine. It is to use ten numbers to combine them at will to perform triple encryption.

For example: After the first level of encryption of "five", it becomes "three", then the second level of encryption becomes "nine", and after the third level of encryption, it becomes "seven".

In other words, if you want to send a number "five", it will randomly turn into "three" or "nine" or "seven"; finally, whether this five represents "nine" or "seven", requires a key.

This encoding connection is randomly connected by the Military Commission's cryptographic compilers. Once the connection is successful, it becomes a password. They will take a code for this set of ten password connections. This code is the key.

The Military Commission has different passwords to the major army commands, but the difference lies in the key. The compilation method is the same.

Because Yu Zecheng knew this encoding method, he could easily crack it.

A secret key has a total of ten to the power of four, and ten thousand combinations.

According to the Chinese customs, Yu Zecheng excluded ten combinations of heavy numbers from the first group of connections: zero-zero, one-one, two-two...; in this way, one thousand combinations were eliminated. He then removed from the first group of connections: seven-four, two-four, eight-four, four-seven, and some of them were not in line with the Chinese customs. In addition, he was very familiar with the power generation habits of the Military Commission and the Chinese. If he tried to translate the first word of the telegram was "Zi", or the last word was "Ye", he would not need to test other telegrams. It is basically certain that it had been deciphered.

Yu Zecheng actually didn't need to try ten thousand times, or even five thousand times, and he could decipher it. Before this, he had already reserved several keys from the Military Commission. Therefore, he could decipher the telegram sent by the Military Commission to other armies just a few tests.

However, no one can decipher it so easily, because not many people know the way of setting passwords by the Military Commission!

But why is it difficult to crack German passwords? Germany uses twenty-six letters to triple encryption. That is to say, the possibility is to the fourth power of "twenty-six", with more than 450,000 possibilities. Not only that, Germany can also switch the rotor of the Enigermap at will, which adds six more possibilities, with more than 2.7 million possibilities. But even so many possibilities were cracked by the Poles.

The Germans later carried out six-level encryption, and finally ten-level encryption. When the six-level encryption was performed, the Poles could no longer decipher.

--

[Special thanks to the editor of Hotan Qi on the Internet!
Chapter completed!