"Your Majesty the Emperor, you seem to be tired of stylized politics and all kinds of activities now, in that case, how about we do something more meaningful? A game that tests intelligence and rational analysis even more. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 info Personally, I was not very concerned about the intelligence security of the Prussian and German imperial central governments, and in my spare time I organized an intelligence analysis team that deciphered the Bavarian telegraph system with normal distributions and matrix equations, and the results were very unexpected, and one of the experts later privately told me that there were all kinds of vulnerabilities in the German, French, and British ciphers. As long as there are sufficient funds and material support, all the passwords are worthless in front of them. This unnerved me, so I decided to develop a new encryption solution to solve this problem, and now that the system is in full swing, I wanted to try its security. Ruprecht wrote in a letter to the Kaiser.

Ruprecht **** first established contact with the Kaiser through pen pals, and now, although there is a more direct way, the two are still willing to communicate with words when they seem to have nothing to do. And some content that is inconvenient to convey or disseminate by phone is passed on to each other through letters one by one.

"Prussia's intelligence encryption is absolutely secure, there can be no problem, but if someone wants to give it a try, I'd like to give it a chance, but it needs to have a jackpot, and if I can, I'd like to see what exactly your so-called new encryption method is." The Kaiser wrote in the letter with some disapproval, although he didn't quite believe what the **** said, but this was indeed a very interesting game. “

"I will use the cipher of the Prussian army to transmit a part of the information, and every week I will send out three to seven specially marked messages of special significance, and you will do the same, for every piece of information deciphered by the other side, 20,000 marks! How is it? As the emperor of a country, this money is not a big deal, it is all a pastime, the Kaiser is still very relieved about his intelligence system, and at the same time he also wants to see what new tricks the future Bavarian king can come up with in this field!

"As you wish, Your Majesty the Kaiser, if you find it difficult to bear this heavy stakes alone, bring your ministers along in this game, I think we will both benefit greatly, I have gained a large number of marks, and you foresee the danger." His Highness wrote confidently in his reply.

"Crazy guy! I'm going to make you pay for your hubris! If you're willing to terminate the game, just pay me 1 million marks. How is it? The Kaiser's anger was vividly reflected in the letter, because he felt that the other party was insulting him, no, insulting the intelligence of the Kingdom of Prussia!

"Tell Moltke Jr. to encrypt it with our latest ADFGV cipher, and then send the ciphertext to that arrogant Bavarian prince, as for the contents? Just copy a copy of the order we just gave to Krupp. The Kaiser commanded.

So on the eve of Christmas 1902, a new game between the Kaiser and Ruprecht **** began, and at this time, the German Army had begun to gradually update the password, using this new box password called ADFGV by insiders for transmission. Moltke Jr. was also interested after receiving the Kaiser's order, and he also wanted to know whether the supposedly undecipherable code that had just been created within the German Army was really as good as the cipher inventor said.

Soon, at the time when this cipher officially began to be used within the German military, the game between the two sides officially began! Three telegrams were sent in the first week, but there was no news of them like a stone ox entering the sea. And again, 3 telegrams were sent from the Bavarian side, which were also indecipherable by German experts. However, in this contest, no one cares too much about the gains and losses of the week, and the willingness is very simple, when a telegraph system appears, it is absolutely impossible to decipher in a short time, and the key to deciphering the telegram is repetition and correspondence with the facts. The former is to explore the relationship between ciphertext and plaintext and encryption methods, while the latter is to verify the correspondence between ciphertext and facts.

Not to mention a week, for a whole month, neither side could decipher each other's telegrams. Because both sides don't know anything about each other's algorithms, it is also a very troublesome thing to need to sift through the intelligence from the corresponding events. Although it was very calm on the surface, in fact, under the calm appearance, the two sides had gradually changed, and the Prussian side was still correspondingly with the contents of the telegram by collecting a large number of movements of the Bavarian army. And **** has begun to crack the password encryption method.

"Dear **** Your Highness, I take back what I said before, the Prussian side is not all waste in terms of encryption mathematics, this time, the box password they came up with is a little interesting, at least using classical normal distribution and statistical principles to guess this information is very difficult, because they introduced a password to determine the position of the box in the process of deciphering, in this way, it is not easy to calculate the file after two encryption in a simple mathematical way." In the office of ****, Bavaria's chief intelligence guru Arthur. Shelbius and his assistant Richard. Ritter is reporting to the prince on his work during this time.

The so-called classical encryption is actually a pre-agreed seemingly irregular code to directly replace the letters in the plaintext. There may also be multiple substitutions in the middle to make it more difficult to crack. But because it is a simple one-to-one correspondence, no matter how many times you want to replace it, after comparing it with the facts, you can easily find out the correspondence, because no matter how you replace it, a piece of text in the ciphertext can only correspond to the corresponding plaintext, and you can guess directly when necessary.

For example, let's say you receive a piece of information that was sent to a war zone, and the next day the enemy in a war zone suddenly attacks. Well, if you are sure that this information is related to this attack, then let's find a correspondence directly, and this information will definitely mention the location, time and process of the attack, right? Then just look for it, it doesn't matter if you can't find it once, accumulate some materials and continue to look for it. There are so many telegrams on the battlefield, and you can always find a correspondence quickly. This is known as classical encryption. Of course, this encryption is outdated. Even the Prussian military did not need .......

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