"Victory! Monarch! When he opened the door of Li Le's room, Marshal Kesselring and his adjutant stood upright at the door, raising their arms. Pen ~ fun ~ pavilion www.biquge.info

The two of them saluted respectfully, and then walked to Li Le's desk. Compared with the perverted office of the Prime Minister's Office, Li Le still prefers the more normal room in front of him.

There are no huge marble tables, no laughable ceilings and columns.

Li Le, who was accustomed to a decent room in his previous life, took a long time to get used to the exaggerated office room.

"Ah, you're here...... Li Le has been concerned about the cipher machines used by Germany in the past two days, and protecting his own communications has always been something he is more concerned about.

The Enigma encryption system has always been the pride of the German cryptographic community. This cipher machine was considered impossible to decipher, and it was also used by the Germans until the end of the war.

But Li Le knew that before World War II, this kind of thing had been sold by the capitalists for civilian use, and Polish cryptographers had deciphered Enigma and handed over a decipherment tool to the British.

This decipherment tool was called the "bomb", and it later helped Turing decipher many Enigma messages, causing Germany's top decision-making to remain translucent to the Allies.

So Li Le is trying to find an alternative to this cryptographic system, and now he is most enthusiastic about what he is doing is to upgrade the Enigma cipher machine.

The original Enigma cipher machine was a complex cipher machine composed of three rotors. Under this system, the machine can encrypt messages into a jumble of letters.

According to the corresponding mechanical principle, the rotor can encrypt the A in the message into one of any letters, and unless you get the secret key, you can only see a row of passwords that have no regularity at all.

However, it seems that this very advanced cipher machine has been deciphered by the geniuses of the Allies, and although the Germans have changed the secret key, it does not seem to have prevented the Allies from mastering the complex laws in it.

Li Le had already thought of some solutions - on the one hand, he decided to rely on frequent key changes to slow down the decipherment of the Allies.

On the other hand, he has decided to add an insurance policy to the system in the simplest way - to improve the Enigma cipher machine!

This is a seemingly complicated, but very simple method: the Enigma cipher machine originally had 3 rotors to encrypt 26 English letters.

SO THE ENCRYPTED NUMBER IS THE ENCRYPTED POSSIBILITY OF 26X26X26, A GEOMETRIC INCREASE. There are 17,576 options where the last letter could be encrypted, and this number will increase if you count other encryption methods.

First, the three rotors could be reversed, which increased the complexity of encryption by a factor of six, and the Germans added other means of secrecy to the machine after World War II, eventually making the possibility of encryption an astronomical figure of 100 million.

But now, the Enigma cipher machine used by Germany itself has not been complicated to such an extent, so the British have found a way to decipher it!

The method adopted by Li Le is very simple, that is, on the basis of the Enigma cipher machine, a rotor is added, which makes the work of deciphering this cipher machine 26 times more complicated at once!

With such a geometric increase of 26 times, it is guaranteed that for at least a year, the Enigma telegram used in Germany will not be deciphered by the British again!

After the 4-rotor Enigma cipher machine is popularized, Li Le will add a new mapping system to these cipher machines, which was developed by the Germans themselves in the later stage of the war, which will make this cipher machine really become a "cipher machine that cannot be deciphered".

Li Le, who came from later generations, knew that there was no code in this world that would never be deciphered, because in a few years, a real mathematician would be born in this world: a computer!

But in 1940, the kind of simple logic computer that Turing played with did not have much to do with the changed style of Enigma cipher machine - although the principle did not change, the increase in complexity made the "super" of the universal machine that simulated Enigma a little insufficient.

Once the "super" Enigma simulator invented by Turing loses its effect, it is an impossible task to find the laws of the Enigma code by manual decipherment.

The new cipher machine was named "Silence" by the German military, and it was also pinned on by Li Le, who came from later generations. With this "silence", German correspondence was finally somewhat reassuring.

"Ah, Marshal Kesselring! What is the matter with you coming here? Li Le has been a little busy lately, and his energy has been attracted by other things.

Fearing that his air force would not be able to bring the British to its knees, Li Le turned his attention to the navy and other aspects.

The improvement of the cipher machine is one aspect, and on the other, he is providing the Navy with a lot of memories of the situation of the British transport fleet.

He traveled back in an era when the British, in honor of their victory in the Battle of the Atlantic, published a documentary publication showing off the exploits of their transport fleet.

It contains detailed information on the codes, routes, and departure and arrival times of all fleets.

According to this book, Li Le knew that Dönitz, the commander of the German Navy's submarine force, who had invented the wolf pack tactic, had never lived up to his vision of blockading Britain.

The British fleet had only one month in the entire course of World War II, and the tonnage of transports sunk by German submarines was greater than the number of transports built.

It is not difficult to deduce from this that, despite the heavy losses, the British maritime transport force has been increasing, and has not been suppressed by German submarines.

As for the later period, when German submarines could no longer sink British transports on a large scale, the outcome and direction of the war were already clear at a glance.

The reason for this was that, on the one hand, Dönitz, although he was highly regarded by Hitler, never obtained the sufficient number of submarines he requested to carry out a strangulation operation against Britain.

Another reason is that the German Navy's single submarine combat mode allows the British Navy to carry out targeted scientific and technological weapon research and development, and quickly suppresses the tactical and technological superiority of German submarines.

"My Führer, I propose to meet you in order to advise you...... Can the bombing of London be put on hold? Kesselring tried to organize his language to make his advice sound a little more reasonable.

Li Le didn't expect that Kessellin was in a hurry to see him for such a thing. He looked up from the pile of papers and looked at his air marshal.

"Why?" He looked at Kesselring and asked. You must know that Germany in another time and space, in real history, has carried out the bombing of London throughout.

Now Kesselring has made a different suggestion to Li Le, which means that he has his own dissatisfaction with this deterrent tactic of bombing the capital.

So Li Le was very interested in Kesselring's idea, and he wanted to know how many people in the Luftwaffe were worthy of his trust, or could be used.

"My Führer! I thought that the bombing of London would be an easy thing to do, but after the attack on August 1, I found that we need to be more determined to weaken the British Air Force. Kesselring spoke his mind.

He looked at Li Le's sharp eyes like carnivores, swallowed a mouthful of saliva and continued: "We should continue to attack the airfields in the southeast of England, as well as the enemy's factories, to consolidate our own victory!" ”

Hearing this, Li Le nodded, then stood up, walked around the desk, which was not small, but not amazing, and walked in front of Kesselring.

"I'm glad you can bring your own different point of view." He reached out and slapped Kesselring twice on the arm.

Kesselring secretly breathed a sigh of relief when he heard the Führer in front of him say this. It seems that the Führer is in a good mood today, which is why he faces doubts in such an amiable manner.

Of course, it may also be because the tactics that Kesselring is now using to question Li Le are the tactics that Li Le strongly advocated before, so the Führer will not be disgusted or angry.

"For the same comrades who are on the rise of Germany, don't stop expressing your opinion because we disagree with each other." Li Le said to Kesselring very generously.

Kesselring was flattered by his words, because the commanders who could make the Führer listen patiently to his advice were undoubtedly the Führer's confidants.

"As I said before, the air attack on London is not our main purpose, but a decoy operation." Li Le explained, in fact, he also heard about the British Air Force avoiding war.

For three days in a row, Luftwaffe planes bombed London a lot, but British fighters never appeared, which made Goering, Kesselring and even Li Le a little uncertain.

If the British had been avoiding the war, then the Luftwaffe would have been wasting time by bombing London, the capital of the United Kingdom.

"But! My Führer! The British never took off fighter interception! Kesselring said worriedly.

Li Le also knew that if the British never took off fighter jets to participate in the war, then the effectiveness of bombing London would be better than bombing some of the factory facilities he provided.

However, he was still unwilling to give up, and he frequently changed the target of attack, which could easily have a negative impact on morale.

"I understand your concern, I have already made a decision, if the British Air Force does not send planes today, I will give up the strategic deployment of bombing London, England!" Li Le opened his mouth and promised Kesselring.

Kesselring was overjoyed by the Führer's promise, and he quickly straightened up and raised his arm: "What a wise leader you are!" My Führer! The Air Force will be guided by your wisdom to a brilliant victory! ”