Dai Chunfeng looked at the report in his hand, and then looked at Wei Daming, the head of the company "Daishan" opposite the desk. He opened his mouth and didn't know what to say, so he had to wipe his forehead with increasingly thinning hair.

As the head of the Military Intelligence and Communications Department, Wei Daming's work ability is undoubtedly, but sometimes it is not a good thing to be too strong, just like now.

"Daishan" company actually obtained the information that the Japanese were about to attack Pearl Harbor by deciphering secret telegrams.

Lao Dai was amused and crying. He had known this for a long time. Even the Japanese intelligence operations in which the investigation into Honolulu were led by the Military Control Commission, but some things can be said but not done, and some things can be done but not said.

The government's original plan was to secretly add fuel to the fire, and at the last moment, he told the Americans about the intelligence to seek benefits. Unexpectedly, an accident occurred and this was in trouble.

With the confidentiality of the government, this matter may have been spread. There are no bargaining chips on the Huangshan official residence, so how can we bargain with the Americans?

After rubbing the swollen temples, Dai Chunfeng put down the report and sighed helplessly: "Da Ming, tell me the specific situation, why are you... Alas, how many people know about this?"

Wei Daming glanced at Lao Dai quietly, feeling that the other party was complaining about him, but he immediately reported on the deciphering process and mentioned a person at the same time.

"The report bureau, the deciphering operation was completed by Daishan Company and the Military and Political Department Research Office. Director Chi of the research office was proficient in Japanese and gave us great help."

Dai Chunfeng's heart was completely dead. If only one department of "Daishan" company participated, things might have had a turnaround, but the Ministry of Military Affairs would be a big sieve.

Since the war started, the top-secret information leaked from the Ministry of Military Affairs could fill several trucks. The Military Control Commission, the pot-firing maker, filled one hole after another, but the result was not satisfactory and the information was still leaked.

As for Director Chi, Lao Dai also heard of this person. This person is a scholar who is studying in Japan and is highly valued by Minister He of the Ministry of Military Affairs.

Dai Chunfeng thought that Wei Daming's report was still continuing. He said that the research work of the Japanese secret telegram in the Ministry of Military Affairs began before the war, but unfortunately the progress has not been great.

This situation did not change until Director Chi appeared. Although the other party was learning electrical engineering and economics, he was quite talented in deciphering codes. In addition, he was quick-witted and good at actuarialism in engineering, so he quickly opened a breakthrough.

Director Chi discovered that Japan's secret telegrams, especially those in the diplomatic system, are mixed with English letters, Katakana, and most of them are English letters.

The current internationally popular telegram encoding methods include location code and natural code (not computer input encoding methods from the 1980s). The former is mostly used in plain text telegrams, while the latter is a common expression method of secret codes.

In natural codes, the characters, words or phrases of plain text are replaced in two groups with specific symbols, letters or numbers to form ciphertext.

So Director Chi divided the intercepted secret information of the Japanese Ministry of Foreign Affairs into multiple double-word groups from beginning to end, and then observed it, hoping to find out some rules to obtain the basic encryption idea of ​​secret information.

After long-term research, he made an amazing discovery that several groups of these "double-letter combinations" are used particularly frequently.

For example: MY, HL, GI... etc., it often appears in telegrams.

In addition to being used frequently, they often appear in three or four groups, four or five groups, or cross-correspondingly.

This phenomenon caused Director Chi to think about what these most common letter combinations mean.

To be specific, are they punctuation marks, or are they auxiliary words and function words like "yes, no, one", or Arabic numerals?

Director Chi continued to investigate and made further discoveries. These two-word groups with high frequency use are not much or less, just ten groups.

First of all, no matter which language or text, it is impossible to use multiple punctuation marks continuously. Although function words and auxiliary words are used frequently, there are rarely overlapping structures or combinations with each other.

So this ruled out the possibility that "MY, HL, GI" is a punctuation mark or a function word or an auxiliary word.

According to the method of infernal absurdity, there is only one possibility. These double-word groups with extremely high frequency appearing are passwords used to represent the ten numbers 0~9.

If you can find out which group is 1 and which group is 2, it will not be difficult to continue to find out its combination rules. Deciphering one by one is a matter of time.

When Dai Chunfeng heard this, he couldn't help but exclaim that Director Chi's deciphering ideas were clear and logical, and he deserved to be the telecommunications ace of the Ministry of Military Affairs.

But which number do these ten sets of passwords correspond to?

Moreover, a secret message cannot be all numbers, and there are other text contents. According to the past work experience of the Military Commission, this part of the text content is valuable information.

Wei Daming nodded. This was what he admired most about Director Chi. The other party collected many Japanese books, magazines, newspapers, and even novels through statistical methods, and found a rule.

"Oh?" Dai Chunfeng said strangely: "What rules?"

Wei Daming replied: "Whether it is the Republic of China or other countries, the most commonly used number is 1, and the least used number is 9.

Based on this idea, Director Chi assumed that the combination of letters with the highest frequency used is 1, and the one with the lowest frequency is 9.

According to the characteristic that 0 generally rarely appears at the beginning of a number, the combination of letters that basically do not appear at the beginning of a telegram is set as the number 0.

In this way, three numbers are initially deciphered, namely 1, 9, 0, and these three reference points are determined, and the next deciphering can be carried out."

Dai Chunfeng became more and more impressed as he heard it. He signaled Wei Daming to sit down and said. Wei Daming bowed slightly, sat on the stool carefully, and told the rest of the deciphering process.

"Director Chi believes that after a war, the numbers in Japanese secret telegrams may represent the number of troops, number of troops, number of guns and ammunition, dates, etc. of the enemy and us.

This chapter is not over, please click on the next page to continue reading! The laboratory will use a Japanese military secret telegram that may involve information about the 102nd Division of the Guo Army as a breakthrough point to verify the previous deciphering results and see if the two-letter combination representing 1 and 0 is connected before and after.

The answer is not surprising, which proves that Director Chi's reasoning is accurate, and the two-letter combination representing the number 2 is also clear, so the remaining numbers are easy to infer.

In addition, the troops in the telegram are often followed by long characters or partial characters, such as the 102nd Division or the 102nd Division, which makes two single characters deciphered.

However, using this piecemeal method to decipher is time-consuming and labor-intensive, and it is also easy to make mistakes. Director Chi started from the Japanese pronunciation and established a new way of deciphering.

There are ten auxiliary words in Japanese. Because they are used very frequently, Director Chi was soon found one by one from secret telegrams. Director Chi also inferred relevant words from the Japanese word habits.

For example, at the end of the Japanese message, there is usually a callback (please call back). According to the position of the word "名名名名名名名名名名名名名名名名名名名名), the secret code of "名名名名名" means that the code of "名名�

Following this idea, analyzing Japanese secret telegrams at the same time and space can also obtain common texts."

Wei Daming's words are easy to understand. Taking the Japanese troops stationed in Hunan Province as an example, the telegram sent by the other party must have a place name auxiliary word and a double-letter combination representing Hunan and provinces.

Dai Chunfeng nodded. He knew some Japanese and knew the basic principles of code decoding. Director Chi's method can only be summarized in seven words.

Summary, summarize, find rules.

These seven words sound easy, but they are difficult to do. Without enough patience, smart mind, and firm will, you will never be able to do it.

On the other hand, Wei Daming said that through the above deciphering methods, Director Chi discovered that the secret codes of the Japanese Ministry of Foreign Affairs mostly start with LA, referred to as "Tiger Code", which contain a variety of code words representing international relations.

"The west wind is tight" means tense relations with the United States; "The north is sunny" means ease of relations with the Red and Russia; "There is rain in the southeast" means tight battlefields in the Republic of China; "The daughter returns to her parents' home" means evacuation of overseas Chinese.

The great success of the Ministry of Military Affairs' Research Office in deciphering Japanese secret telegrams attracted Wei Daming's attention. The two sides cooperated on this. The two institutions exchanged intelligence and discoveries many times, and the government's deciphering of Japanese secret telegrams became more and more in-depth.

Two days ago, Director Chi successfully intercepted a secret telegram sent by the Japanese Ministry of Foreign Affairs to the Japanese Embassy in the United States, with three contents.

1. The imperial government decided to take decisive measures according to the imperial meeting and plan to be code-named "Z".

2. After the Z plan was successful, the embassy immediately burned various password books, leaving only ordinary password books, and burning all confidential documents at the same time.

3. Notify the relevant depositors as much as possible and transfer the embassy funds to the Neutral State Bank.

Director Chi and Wei Daming, who saw the secret message, thought of something. Before the Battle of Shanghai, the Ministry of Foreign Affairs issued a secret message to Japanese consulates in China, ordering them to burn the codebooks in China.

Based on the above information, the two inferred that the Japanese-US war is inevitable and the Japanese are likely to launch a sneak attack on the United States, in Honolulu.

There are two evidences.

First, after May 1941, the number of secret communications between the Japanese Ministry of Foreign Affairs and the Consulate in Honolulu suddenly increased, and the content also changed from the trade content of Japanese expatriates to the news of increasingly secret levels.

Second, these secret telegrams were mixed with a lot of military information. The Japanese Ministry of Foreign Affairs asked the consulate many times about which day the number of warships in Pearl Harbor was the most, and the reply was Sunday.

Through countless messy information, Director Chi and Wei Daming analyzed that the Japanese army was about to attack Pearl Harbor, and the time is likely to be early Sunday morning.

Because the ship was still docking on the dock at this time and the soldiers were in a state of rest, Pearl Harbor's defense was the weakest, and sneak attacks could achieve the best results.

Wei Daming said that he looked at Lao Dai perfectly. The "Daishan" company has made such a great contribution, and the bureau should have made some statements.

Dai Chunfeng thought for a long time and drew a few big cakes to fool Wei Daming away. Then he went to Huangshan official residence to report the matter to someone, but someone didn't care when he learned about it.

He mocked himself that with the arrogance of the Americans, even if the evidence is placed before them, the other party would not believe that the government has the ability to decipher Japanese secret telegrams.

This is true. The US Secretary of State received the "early warning" information from the Republic of China, and even felt a little more look, so he threw the telegram into the trash can.

His Excellency the Secretary of State also joked with the staff around him that Japan's attack on the great America is the most interesting joke this year. If the fighting power of the Republic of China was as strong as the sense of humor, it might have driven away the Japanese long ago.

The staff laughed loudly and agreed with His Excellency the Secretary of State's remarks. Only a small number of people were worried, but they did not dare to express their objections because of their slightest remarks.

In the early morning of the same day, Zuo Chong, Wu Chunyang and He Yijun arrived in Washington and successfully joined Gu Qi and others.
Chapter completed!