Chapter 550: Crypto War One
"His Majesty, you seem to be tired of stylized politics and various activities now. In that case, how about we do something more meaningful? A game that tests more intelligence and rational analysis. Personally, , I am not at ease about the intelligence security of the imperial central government of Prussia and Germany. I once organized an intelligence analysis team in my spare time. They used the idea of normal distribution and matrix equations to decipher the Bavarian telegraph system. As a result It was beyond my expectation. Later, one of the experts thought to me privately that there are various loopholes in the password system of Germany, France, or the British. As long as there is sufficient funding and material support , All the passwords are worthless in front of them. This makes me very uneasy, so I decided to develop a new encryption method to solve this problem, and now, this system has already had an eyebrow, I want to try it Security.” Ruprecht wrote in a letter to the Kaiser.
Ruprecht first established contact with the Kaiser through pen pals. Now, although there is a more direct way, the two are still willing to communicate in words when they seem to have nothing to do. And some inconvenient content that is inconvenient for transmission or telephone transmission is passed to each other through letters.
"Prussian intelligence encryption is absolutely safe, there is no problem, but if someone wants to give it a try, I am willing to give you a chance, but this requires a win. If possible, I also want to see What is your so-called brand-new encryption method?” The Kaiser wrote in the letter disapprovingly. Although he did not believe what was said, this is indeed a very interesting game. "
"I will use the Prussian military's cipher to transmit part of the information. I will send out three to seven specially marked and meaningful messages every week, and you do the same. For every piece of information deciphered by the other party, 20,000 marks How?" As the emperor of a country, this little money is nothing but a pastime. The Kaiser is still very relieved of his intelligence system. At the same time, he also wants to see that in this field, the future What new tricks can the King of Bavaria come up with!
"As you wish, honorable Majesty the Kaiser, if you find it difficult for you to bear this heavy bet alone, you can draw your ministers to play this game together. I think we will all benefit a lot from each other. , I got a lot of marks, and you foresee the danger." His Royal Highness wrote confidently in his reply.
"Crazy guy! I will definitely make you pay for your arrogance! If you are willing to terminate this game, you only need to pay me 1 million marks. How?" The Kaiser’s anger was reflected in the letter. Incisively, because he felt that the other party was insulting him, no, it was insulting the IQ of the Kingdom of Prussia!
"Tell Xiao Moqi to use our latest ADFGV password for encryption, and then send the ciphertext to the arrogant Bavarian prince. As for the content? Just copy the order we just gave to Krupp." Ordered.
So on the eve of Christmas 1902, a new game between the Kaiser and Ruprecht began. At this time, the German Army had begun to gradually update the password, using this new type of framed password called ADFGV by insiders. To transfer. After receiving the instructions from the German Emperor, Moqi also became interested. He also wanted to know whether the undecipherable cipher that was just made by the German Army was really as good as the cipher inventor said.
Soon, when this code officially began to be used internally in the German military, the game between the two sides officially began! The three telegrams of the first week were sent out, and the result was as if a stone cow entered the sea without a word. Similarly, the Bavarian side also sent three telegrams, which German experts could not decipher either. However, in this contest, everyone did not care too much about the gains and losses of the week. The willingness is simple. When a telegraph system appears, it is absolutely impossible to decipher in a short time. The key to deciphering a 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.
Don’t talk about a week, for a whole month, both sides could not decipher each other’s telegram. Since both parties know nothing about each other's algorithms, it is also very troublesome to filter information from corresponding events. Although it is very calm on the surface, in fact, under the calm appearance, the two sides have gradually changed. The Prussian side is still collecting a large number of Bavarian army dynamics to correspond with the content of the telegram. And here has begun to crack the password encryption method.
"His Majesty, I take back what I said before. The Prussian side is not all **** in terms of encryption and mathematics. This time, the box password they came up with is a bit interesting ~ www.wuxiaspot.com~ at least use Classical normal distribution and statistical principles are very difficult to guess this information, because they introduced a password to determine the position of the frame during the deciphering process. In this case, the file after twice encryption needs a simple mathematical method. The calculation is really not easy.” In the office of Bavaria, the chief intelligence master Arthur Shelbyus and his assistant Richard Ritter are reporting to the prince about his work during this period.
The so-called classical encryption is actually to directly replace the letters in the plaintext with pre-appointed and seemingly irregular codes. There may be many substitutions in the middle to increase the difficulty of cracking. But because it is a simple one-to-one correspondence, no matter how many times you want to replace it, you can easily find the correspondence after comparing with the facts, because no matter how you replace it, a paragraph of text in the ciphertext can only correspond to the corresponding plaintext , Just guess when necessary.
For example, you received a piece of information, which was sent to a certain theater, and the enemy suddenly launched an offensive in a certain theater the next day. Well, if it is determined that this piece of information is related to this attack, then directly find the corresponding relationship. This piece of information will definitely mention the location, time and process of the attack, right? Then just look for it directly, it doesn't matter if you can't find it once, accumulate some material and continue to look for it. There are so many telegrams on the battlefield, and the corresponding relationship can always be found quickly. This is the so-called classical encryption. Of course, this encryption method is obsolete. Not even the Prussian military...
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