On the way to Shanghai, just in case, Li Xiaoyi did think of some ways to find Buddha parts, although the only Buddha statue parts Buddha head is in Zheng Zha's place, but Li Xiaoyi can still detect and study by remote sensing, but the result is frustrating.

"There is no radio wave radiation, no radioactive radiation, no infrared radiation, no magnetic anomaly, except that it can float, there is no physical difference between it and ordinary stones! That is, if you don't put it in front of you, you can't find it at all. Li Xiaoyi said helplessly.

"Isn't it also a trait to be able to float?" Wang Xia asked curiously.

"It's just an anti-gravity phenomenon, and the scale is too small, although theoretically it can be detected by extremely sensitive gravity testing instruments, but the premise of this detection is to have the same high-precision background gravity distribution map at hand, and some gravity anomalies can be found through comparison, but do you think we can have this kind of gravity distribution map at hand?"

"Of course, another way is to establish a global gravity field monitoring system, when the Buddha statue parts move, it will cause the gravity field to change, and then the anomaly can be found, but even if a high-precision gravity field monitoring network covering the world is established, I am afraid that the first step is to make a gravity distribution map, so although I have begun to set up a monitoring satellite network, but at least within five days there is no hope, and if it is ...... by then"

Li Xiaoyi didn't continue, but I'm afraid that the earth's gravity field was about to reset at that time! Let's gather some information for future geophysicists in advance.

Soon, Chu Xuan's team arrived in Shanghai, after the previous Zhongzhou team made a big fuss in Shanghai, the Japanese army greatly strengthened the control of Shanghai, there were checkpoints and roadblocks on the roads and railways everywhere, and there were garrisons and armored vehicles in the transportation hub area, although these were useless for the Zhongzhou team, but they brought a lot of trouble to Li Xiaoyi and others in an unexpected way, that is, with the deployment of the Japanese army, the troops were dispersed.

"This group of people from the east and a group from the west, when do we have to fight?" After exterminating a group of devils, Wang Xia also felt a little bored and couldn't help complaining.

"You are also an officer of the Republic, although you are a special soldier, don't always think about it from the perspective of a soldier, the tactics that you were asked to eat when you studied at the military academy! Think about it. ”

After moving forward for a few more minutes, Wang Xia finally noticed one point, that is, the direction they were heading, "We have never changed the direction, this is the ...... ahead"

"The Japanese Shanghai Garrison Command, the so-called 'snake and seven inches', as long as it attacks here, the entire Japanese garrison in Shanghai will move, and then we only need to wait for the Japanese army to concentrate itself."

"So that's the case, with the current level of communication and transportation equipment, it will take a long time for the Japanese army to assemble."

"Yes, so early in the morning, I notified the Japanese troops in Shanghai to make every effort to rescue the headquarters, and now a third of the troops should have gathered around the headquarters."

"Notice? How do you mobilize the Japs? ”

"It seems that you really ate all the lessons taught by the teacher during your further study, information warfare, I worked hard to climb the science and technology tree, but I didn't just use it for you to fly around and cut people! In the current world, what kind of encryption algorithm can resist the decipherment of a supercomputer, even the German 'Enigma machine' I can crack for him, not to mention the Japanese devil's coded communication, the monitoring system can even directly edit the recording, simulate the commander's voice to give orders, with the strict hierarchy in the Japanese army, which unit dares to disobey the commander's direct orders? ”

"The 'Enigma machine', doesn't it mean that the British can also decipher it, and it is said that the world's first computer was built for this purpose, but it was only because of secrecy that the Americans snatched the name of the world's first computer."

"Where did you hear the news, it doesn't seem from the literature of the stalls, the British are able to decipher the German 'Enigma machine', but they basically don't do any theoretical work."

"To put it simply, the'Enigma machine' is a cryptographic machine encrypted by a mechanical key, and the mechanical key itself will continue to change dynamically, so theoretically it is extremely difficult to decipher, of course, it is a piece of cake in front of the computer's computing power, as long as there is a suitable cracking software, it can be deciphered in a few seconds, but for the level of science and technology at that time, it is completely impossible to brute-force cracking through the exhaustive method, but there are several loopholes in the 'Enigma machine'."

"The first is that the 'Enigma machine' was not independently developed by the military, but the encryption technology developed by the people, and there are several independent developments in the world, which makes its working principle and mechanical structure understood and mastered."

"Second, the 'Enigma machine' is a mechanical encryption system after all, relying on a mechanical rotor for dynamic encryption, even if the number of key combinations can be increased by increasing the rotor, but there is still a situation of duplicate keys, and the probability of being deciphered can only be reduced as much as possible by improving the use method, rather than being completely undecipherable."

"Third, it is the most vulnerable link, people, the deciphering side has obtained a large number of original documents through espionage work, so that the key table can be further improved by comparing the ciphertext, which reduces the difficulty of the work."

"As for the 'first computer', the British built a machine specially designed to decipher the 'Enigma machine', and its working principle is also very simple, that is, a super 'Enigma machine' equipped with a large number of 'Enigma machine' rotors, by testing different rotor combinations, reverse deduction of the original text, that is to say, after the input of cipher content at the input end, dozens of results, hundreds, or even thousands of results will be output from the output end, although most of them are unknown results, But one of the results could be a correct message, which obviously works in such a way that it is so different from a computer that it is not even a calculator. ”

"Even this machine was not invented by the British themselves, and the main role was played by the Poles, but Poland was destroyed by Germany early on, and the Poles handed over the prototype to the British."

"Therefore, in the matter of deciphering the 'Enigma machine', the British neither thought about it nor did it with their hands, but after getting the prototype, in order to cope with Germany's upgrade of the 'Enigma machine', they further improved the original design, and then made up a story of 'Bletchley Garden', kicking the sad Poles away." (To be continued.) )