As a cryptographic system jointly used by Japanese diplomacy and the Japanese Army, thousands of various important messages are encrypted with red keys every day and sent to and from everywhere.
To decipher the meaning and importance of the Red Secret, even if you think about it with your toes, you will know how big it is.
Being at the last moment of deciphering the red secret, Zhang Zizhong, as a Chinese soldier, deeply understood the importance of this critical moment and must increase the security force of Tsinghua Campus.
If he did not want to disturb potential Japanese spies, Zhang Zizhong would even order a regiment of troops to be mobilized. He could not attach too much importance to the work of deciphering the red secret.
Yu Hua stood at the door, facing the majesty and killing intent of a high-ranking Chinese general. Zhang Zizhong, who was usually humble and gentle, suddenly became an iron-blooded general, filled with an aura as majestic as a mountain.
Iron-blooded, decisive and majestic.
This is the unique temperament of the war years.
"General Zhang, I'm going to eat." Major Li Ping left immediately. After Li Ping left, Yu Hua said to Zhang Zizhong with a smile on his face.
"Classmate Yu, please go away. I, Zhang Zizhong, am too stupid to help you. I leave it to you and Professor Hua to decipher the red secret." Hearing Yu Hua's voice, Zhang Zizhong came back to his senses. The iron blood and murderous intent from his body suddenly disappeared, and his face
He smiled, became humble again, and his words were full of respect.
"We know China and we must work hard for China."
Yu Hua smiled and then walked to the kitchen.
In the kitchen, there are meals prepared by my wife Wu Xiaoyuan. They are simply heated up, and the big white steamed buns are served with pickles and vegetable soup, which quickly solves the stomach problem.
After eating and drinking, Yu Hua went straight to the second bedroom under the gaze of Zhang Zizhong and others, took off his clothes and went to bed, preparing to rest.
The better you rest, the faster your energy will be restored.
Lying in bed, setting the alarm clock, the exhausted Yu Hua fell into a deep sleep and entered a deep sleep state. His brain was pure and he was not dreaming. At this time, the golden mathematical symbols in the center of his thinking played a subtle role all the time, accelerating brain recovery.
Outside the door, Zhang Zizhong and others noticed that after Yu Hua fell asleep quickly, his movements and sounds became softer. All three people present understood that the last moment of deciphering the red secret was inseparable from the leader Hua Luogeng, and it was inseparable from calculation.
The extremely capable Yu Hua.
All they can do is... be on call at any time.
…
The night is getting darker, and the cold wind is howling outside the window.
Time passed slowly minute by minute.
"Ding!" After an unknown amount of time, the alarm clock placed on the bedside table in the second bedroom suddenly made a clear and rapid sound.
Yu Hua, who was at the end of his sleep cycle, immediately opened his eyes when he heard the sound of the alarm clock. Pressing the alarm clock with his right hand, his brain felt refreshed, without the previous feeling of fatigue or fainting.
I looked at the time and saw that it was already half past twelve in the evening.
"Huh... the state has probably recovered to 80%, which is enough to support the final attack." Feeling the state of his brain, Yu Hua took a deep breath, his eyes glowed with light, he simply adjusted his state, and immediately got dressed.
When he came to the door, the door opened, and the living room was filled with smoke. Zhang Zizhong was sitting next to the sofa, smoking a cigarette.
Tian Hong and Li Ping were sitting upright and meticulous.
"General Zhang, I'm in." Yu Hua said to Zhang Zizhong, and when Zhang Zizhong nodded, he immediately came to the door of the study.
Pushing open the door and entering, the study room was also filled with smoke. Sitting on the desk was Hua Luogeng's slightly thin figure, holding a cigarette in his left hand. His eyes were bloodshot and he felt extremely tired. He was still looking at the table attentively.
Holding the original plain text information one after another, holding the Parker pen tightly in his right hand, he continued to analyze and deduce it on the draft paper.
There is a cool tea cup on the table and a meal that has been eaten.
"Professor, how is the situation?" Yu Hua made a cup of hot tea, came to the table, put it down gently, and asked.
"Three left, EGM."
When Hua Luogeng heard a familiar voice coming from his ears, he raised his head to respond and rubbed his extremely sore eyes. After seeing the hot tea on the table, he was moved and smiled.
One step closer to deciphering the twenty-six letters of the Red Secret.
"Leave the rest of the work to me. You rest first and save your energy for the final inverse matrix deduction. I will establish the original matrix." Yu Hua heard this and said to Hua Luogeng.
"Okay, as long as you are here, our master and apprentice will stay up all night tonight to get out the original matrix." Hua Luogeng did not show any pretense, and maintained his dignity as a master. He stood up, leaving his position to Yu Hua, and pumped hard.
He took a puff of cigarette, his deep and vast eyes revealed light, and said in a deep voice.
The momentum is as strong as a tiger, striking while the iron is hot, we must create the original matrix tonight.
"Hua understands." Yu Hua smiled, went straight to the desk and sat down, took the final baton from Hua Luogeng, and quickly took over the remaining work.
He picked up the 2818th original plain text with his right hand, put it in front of him, scanned the record with his eyes, and stored it in his mind. The whole process was quick and fast. At this moment, Yu Hua once again transformed into a human computer without emotions.
"I hope that when I wake up, I can see the original matrix." Hua Luogeng looked at Yu Hua who was in working mode, full of expectations, and retreated to the seat behind him without disturbing Yu Hua. He leaned against the cold chair, feeling extremely tired.
He fell asleep quickly.
Yu Hua used a proprietary method to decipher passwords, sorting in one second, scanning in one second, and storing in one second. Each piece of original plaintext data would not stay for more than three seconds. After about half an hour, the second batch of original plaintext data contained a total of 3,500 pieces.
All are stored in the brain.
After the content collection was completed, Yu Hua entered the most energy-consuming analysis and deciphering state without hesitation. While maintaining hundreds of thousands of unparsed English letters, he peeled them off and gradually found the patterns of specific letters and letter combinations.
The energy that had just been restored and was enough to maintain an efficient learning state for several hours decreased wildly in a geometric form. When it came to deciphering the last three letters, the difficulty of deciphering had not dropped at all, and was even higher than at the beginning.
Password deciphering is not like a simple test. The first step is to analyze the undeciphered letters, the second step is to extract specific letters and letter combinations, and the third step is to analyze based on specific letters and letter combinations.
The third step is the most critical. The last three letters must be parsed out with extreme accuracy. If there is an error, it will be catastrophic.
The letters that have not yet been completely deciphered are EGM, and the numbers are 25, 18, and 9.
Assume that the real matrix letters of the red secret are E=25, G=18, M=9, then Yu Hua cannot parse the letter E into 9. If it is parsed into 9, the original matrix cannot be established.
Fifteen minutes later, Yu Hua, who was sitting at his desk with his eyes closed, suddenly opened his eyes, a glint of light appeared in his eyes, and he immediately picked up the Parker pen in his right hand.