Knowing who a specific code name refers to is key. [Full text reading] With this, these materials have become out-and-out black materials, and the lethality of throwing them out is much more powerful than a "three festivals and two birthdays" gift sheet. Just as the "hidden rules" of female artists are entertainment news, raping female artists is a criminal case.
Lin Baiguang believes that it is impossible for Gou Er to have the memory of a human being to remember the person that each password refers to. He should probably have a comparison table between passwords and names as a memo.
However, Lin Baiguang wanted to know this question, and Gou Er naturally wanted to know it too. The collection of materials was gradually coming to an end, but Sun Xiao still couldn't find the most valuable roster from the ledger. Lin Baiguang's face turned ugly: he found valuable materials but couldn't use them. It was so disappointing.
"You don't have to be too disappointed. Maybe Gou Er memorized it by himself," Mu Min comforted him, "Maybe he carried this booklet with him. In addition to looking for information directly, you can also use intelligence analysis method to find out what the code name refers to.”
"By comparing the materials, you can roughly know where this person is, what he does specifically, who he has come into contact with, and you can guess who he is." Mu Min said, picking up the bribery booklet, "The information in this booklet is The Lan Lingweng mentioned in the last incident received money to talk to Wu Mingjin about the matter, and the matter was completed. Obviously this person is an acquaintance of Wu Mingjin, and the relationship is very unusual."
"I've thought of this too," Lin Baiguang said, "but there are quite a few close associates around Wu Mingjin - it's hard to confirm who they are. Besides, if the county magistrate Wu Ya or an important local gentry came forward to speak out, he wouldn't I had the nerve to reject it on the spot.”
"So we have to look at the materials together so that we can make inferences."
After cleaning the box to the end, I finally found what Lin Baiguang needed: the roster.
When Sun Xiao brought it, Lin Baiguang was overjoyed. With this thing, he would be able to catch a lot of bezoar and dog treasures in the bellies of these officials in Qiongzhou Prefecture!
When I opened it, I immediately felt cold. It turns out that this is a comparison table. Each page of the account book is divided into two columns. The upper part is the code name of the person mentioned, but the name below is a meaningless three-character combination. Judging from its weirdness, it cannot be the name of the person at all.
"This Gou Er is really a ghost! This is probably another code or something!"
Mu Min thought this was probably a kind of password, but she knew nothing about it. After searching the personnel database on the computer, they found the password person: Zhang Xingpei.
Zhang Xingpei had just returned from Guangzhou and was enjoying his vacation. He received an excellent reception in Guangzhou: he played with four or five women at once. Made me exhausted. After returning to Lingao, I just thought about cultivating myself. But a phone call summoned him to the Political and Security Administration.
Zhang Xingpei was uneasy and thought several times whether he had ever felt sorry for the Crossing Group. Could it be that someone had reported him on his "life style" in Guangzhou? It seems that the Political Security Office doesn't care about this kind of lower body matter... After much deliberation, I couldn't think of anything, so I had to come and report.
"Look at these things. Are they passwords?" Lin Baiguang got straight to the point.
Zhang Xingpei has a strong interest in cryptography and information science, and has even studied it himself. Of course, his cryptography can only be regarded as the most basic entry level. When he heard that he was working on cryptography, he was shocked - almost all of his cryptography examples were based on the West. He had no idea what ancient Chinese cryptography was like.
"This is very difficult. I know nothing about ancient Chinese codes..." Zhang Xingpei hesitated, "The ancients probably wouldn't have used too complex codes, but it would be difficult to get started without knowing the system inside."
"The principle should be the same, right?"
"It's hard to say." Zhang Xingpei said, "China has 800 commonly used characters, while Westerners' system only has dozens of letters. From a coding perspective, letters are obviously much easier than square characters."
The huge difference in writing between China and the West results in completely different concepts in secretly transmitting information. In ancient China, incisions and lingo were used more often. Zhang Xingpei knew a little about this kind of incision argot, but it was basically passed down by word of mouth and was not the same thing as a password at all.
"Hurry up and call Luo Duo and ask him to check the ancient Chinese code information!"
"It's the middle of the night. It's unethical to disturb others in the middle of the night." Zhang Xingpei was already dissatisfied with being summoned late at night, so he excused himself.
"Don't worry, these two bookcases must be in the office of the Ministry of Social Work." Lin Baiguang was obviously not interested in public ethics, and he was very familiar with Luo Duo's habits - his biggest hobby was to collect information, and he became more energetic at night. good.
But Luo Duo, who was called, could not provide any more information - it was midnight, and he could not go to the computer center of the big library to search. According to his limited memory, Zhang Xingpei generally knew that the main military codes of ancient China were Two types: one is a "lingo" similar to the "incision" of Jianghu, but how this lingo is used is now unclear.
There is also the so-called "word test". That is, various situations that may be encountered in the army are compiled into forty items, such as: "Ask for bows", "Ask for arrows", "Ask for march", "Ask for reinforcements" and so on. Then the contact parties agreed to use a five-character poem with no repeated words as the "word check". When writing the attributes, the item number of the thing to be reported should correspond to the word in the poem, and then add a word next to it in the letter. A very good one is fine. In this way, even if the letter falls into the hands of the enemy, the other party will know this method. As long as the album with the project number is not leaked, even knowing which poem it is is useless.
"...But this method is mainly used for communication. If Gou Er only uses it to prevent leaks, it is hard to say whether it is this kind of method."
"Actually, words represent meanings, interesting, interesting." Zhang Xingpei fell into deep thought.
Then Luo Duo began to introduce Qi Jiguang's cipher based on the pronunciation of fanqie - this cipher is very similar to modern ciphers, but judging from the complexity of what he said, no one thought that Gou Er would use such a cipher. Complex system. In fact, this kind of password was only used among Qi Jiajun for a short time and was not promoted and spread.
Zhang Xingpei took a pen and copied down the entire account book. Now one thing is certain: these three-character words that he didn't know why were all referring to the names of people. He took the copy and looked at it carefully. After a few minutes, He found a breakthrough.
"I have some numbers." Zhang Xingpei pointed to the words above, "This is a simple substitution method, which is the so-called Caesar cipher."
"When did Gou Er know about Caesar?"
"Of course it's not that he used the Caesar cipher, but the principle is similar." Zhang Xingpei explained: The so-called Caesar cipher is to replace each letter in the plaintext with a different letter or symbol. According to records: Caesar simply replaced each letter in the plaintext with the three letters following it.
"But this is unlikely." Luo Duo immediately put forward the meaning, "How many letters are there? There are more than 800 commonly used Chinese characters. How big is this character list? Gou Er has to carry a code book with him at all times. Such a thick codebook.”
"I don't know about that." Zhang Xingpei shook his head and said, "But I can probably infer a few surnames from the probability method."
His idea is very simple. Since these are personal names, the first character of the three-character word must be the surname. Since it is the surname, there is a problem of frequency. Just as the most common letter in the English alphabet is e, Chinese surnames also appear frequently. Wang, Zhang, Li, and Chen are the most common surnames. Although Zhang Xingpei doesn't know the order of the number of surnames in the Ming Dynasty, he thinks they should be very modern and there won't be much difference.
"You have to consider local characteristics." Luo Duo reminded him, "For Lingao, the surname Fu is the common surname. There are many immigrants from Fujian here, and there are also many surnames Lin."
"That's the difficulty," Zhang Xingpei said. He singled out the characters with the most frequent surnames and looked at them over and over again, but couldn't get started.
"What a tragedy, I have no idea about ancient Chinese books," Zhang Xingpei said in frustration. "What Gou Er used must be an ancient book. And it's very common - just like Europeans like to use the Bible as code words. The table is the same.”
"I think I have guessed one." Mu Min suddenly said, "The person who went to tell Wu Mingjin about Gou Er's son Guan must be Wang Zhaomin - his master!"
Everyone's eyes turned to her.
"You see, the first character of the three characters corresponding to Lan Lingweng is exactly the most frequent characters found by Zhang Xingpei: Wang, Zhang, Li, Chen, plus Fu Helin, think about it Look, there is only one trusted person around Wu Mingjin, or someone he can talk to, who fits these surnames, Wang Zhaomin!"
"Not bad, not bad," Lin Baiguang nodded repeatedly. After comparing it with the information, he no longer felt that it was too unfamiliar.
"Comparing his bribery record with the social situation of Lingao we have, we should be able to find out the names of many people - fortunately, these are just names, so it is easier to guess."
It's hard to say about other places. The intelligence department of Lingao still has a lot of basic social conditions. Soon, the names of several more people were found from clues.
"But just guessing like this, the accuracy is still limited, and once Lingao comes out, this method will no longer be accurate." Mu Min said, "You still have to find the word list."
"Let me find it slowly," Zhang Xingpei said. "Now that I know a few characters, I can guess them. Let me start with the most popular Baijiasurnames, Three-Character Classic, and Thousand-Character Classic - these three Anyone who has read the Ming Dynasty can memorize it.!~!
