Fog Era

Buzzing, buzzing.

In the middle of the night, Shi Tiezhu suddenly opened his eyes.

The darkness couldn't stop his sight, the dim light of Guanlan's eyes lit up, and Shi Tiezhu looked towards the buzzer placed on the side of his bed.

Shi Tiexin woke up together: "What's wrong?"

"There is a signal in the frequency band we set." Shi Tiexin pressed the button and turned off the buzzer: "The radio has captured a piece of information and it has been recorded."

"Really there is a signal?!" Shi Tiexin was surprised: "There is also a third front here?"

"The third The battle line may not be there, but the encrypted frequency band will not disappear by itself. It is also possible for others to communicate with this frequency band. "Although it is midnight, Shi Tiezhu doesn't feel sleepy at all.

On the one hand, he has long developed the habit of falling asleep and waking up at any time, and refreshing as soon as he wakes up. On the other hand, if the cultivation base is successful, it doesn’t cost much. If you don’t sleep, you won’t sleep.

Three years later, he also raised some vigilance.

"Strange, at this time, who would use this near-field encrypted frequency band to communicate?" Shi Tiezhu put on his clothes, strode through the corridor with a meteor, and walked to the Wireless Electronics room.

Sit in front of the screen of the machine and took a look, and indeed a short message was intercepted.

It's very short, so short that there are no ligatures.

To visualize the content on the screen, only four points come out, arranged at different distances and intervals. There are long or short, intermittent or continuous lines in the middle of the small holes.

"This is a special encrypted telecommunications." Shi Tiezhu glanced at it and understood that he couldn't crack it, because he didn't know the position, distance, and interval between these small holes, what exactly they meant.

Shi Tiexin also frowned. Through Black Zun, he also learned some encrypted communication methods, but obviously it does not include this in front of him.

So, what does this unfathomable mystery SMS mean?

"It seems that I can only ask an expert to ask."

Shi Tiexin: "Do you know a secret power expert?"

"It's not me, it's' We', we know a super-class secret electricity expert." Shi Tiezhu looked at the time: "It's almost five o'clock, she should wake up too, let's wait a few minutes before we go."

Five o'clock in the morning At fifteen minutes, Shi Tiezhu knocked on Mengmeng's door.

Shi Tiexin was wondering if it would be too early, and if he would be screamed when calling the old lady so early. As a result, as soon as the door was opened, she saw that Mengmeng had washed and dressed neatly, and she looked like she was ready to go out for exercise.

Shi Tiexin was shocked instantly: "Does Mengmeng get up so early every day?"

"I'm old and can't sleep anymore. Besides, we were all sleepy back then, but often Assembling urgently and rushing from a long distance, I have long been used to getting up early." Shi Tiezhu explained a few words in his heart, and then showed a well-behaved expression to Mengmeng sister: "Political commissar, early."

"Rare, Do you still know to come and see me?" Sister Mengmeng said while shaking her arms, as if she wanted to do a middle-aged and elderly health Ba Duan Jin at any time: "What's the matter this early in the morning?"

"I intercepted a piece of ciphertext and can't decipher it, you can help me see it."

"You? Intercepted ciphertext?" Mengmeng couldn't help but be happy: "When will you be able? Have you intercepted the ciphertext?"

"Isn’t it a long time to be able to do it recently? It’s a bit better if I didn’t know how to do it in the past. Once you’re a political commissar, don’t make fun of me. I feel that this encrypted communication is still Quite strange, you can take a look, don't miss things."

"Okay, get it." The soldier's efficiency is paramount, and sister Mengmeng immediately began to study the small figure.

She frowned when she glanced at it. He took out a pair of reading glasses, squinted his eyes and looked at it carefully. After looking up and down for two minutes, he suddenly said solemnly: "Why did this secret electricity come from?"

Shi Tiezhu said the entire process of development For a moment. I didn't mention Shi Tiexin's situation, but said that I went to the radio to play around and happened to catch the frequency band.

"Had it happened? You are a coincidence." Sister Mengmeng obviously didn't believe it. But after thinking about it, she shook her head again: "No, you are impossible to know this frequency band, maybe you really happened to hit it."

An exclamation mark lit up on Shi Tiexin's forehead. Listening to Sister Mengmeng's meaning, what is the source of co-authoring this frequency band itself?

Quickly urge Shi Tiezhu to ask.

Shi Tiezhu: "Sister Mengmeng, what is the source of this frequency band?"

"This is a secret matter, but since you have caught up, it’s okay to tell you. This is the emergency communication frequency band of the Secret Affairs Bureau."

Shi Tiezhu frowned: "The Secret Affairs Bureau?"

"The Secret Affairs Bureau is a secret Intelligence Section in our country, with a deeper depth than other intelligence agencies. During the anti-imperialist war, I made great contributions, but few people know its existence."

"At that time, in order to allow high-speed transmission, high-speed docking, and high-speed response to intelligence and operations, I also worked with the Secret Affairs Bureau. People have been in contact. Many of the tasks we perform are supported by the Secret Affairs Bureau, which can be said to be a group of very reliable underground warriors."

"But why did the Secret Bureau’s people come to fire star "

"And now the times have changed a long time ago. Even if the Secret Bureau has news that needs to be sent back to Earth, near field communication should not be used."

"Is it a prank?"

"No, impossible, this is the third ciphertext of the Secret Bureau. It is the result of a joint research by Peak linguists, mathematicians, graphics scientists, and cryptographers. It has an ultra-small size and ultra-high The characteristics of density and super concealment are beyond the reach of ordinary members of the Secret Affairs Bureau. It is absolutely impossible. It is a prank."

Sister Mengmeng looked at this symbol and said with a serious expression: "This kind of high Density information needs special equipment to decompress. According to the encryption method, files of different sizes will be decompressed. There is no special equipment on the forward number, and only general equipment can be used for first calculation. This takes time."

" Your task, continue to monitor that frequency band, and also monitor all other communication frequency bands."

"If there is any disturbance, report it immediately!"

Under the sports jacket and put on the military uniform, the whole person is showing off one's ability: "Shi Tiezhu first-class non-commissioned officer, we may have encountered some unexpected situation. Now, limited to you and me, we are in a wartime state! Before the situation changes further, remember to act in secret."

Shi Tiezhu awe-inspiring, a standard standing at attention: "Yes!"

Mengmeng sister energetic and bustling to decipher the third The cipher text, she wants to mobilize the computing power of the central computer of the forward number to crack it.

Shi Tiezhu went back to monitor the wireless frequency band. He must remain observant until the situation becomes clear. Can’t ask questions, can’t respond, avoid exposing one's own existence, leading to unpredictable changes.

There is no problem with other frequency bands, all communication is normal, but this frequency band is very strange.

After half an hour, buzzing, the graph was detected.

One hour later, buzzing, he monitored the pattern again.

For the next two hours, the other party will send the same graphics every half an hour. Before this graphic was deconstructed, the information size was only 46 Bit, and it was like an invisible ghost assassin in the vast telecom field.

"This kind of behavior is too strange, it's not like an intelligence agent should behave when contacting an organization." Shi Tiezhu squeezed it, and asked in the heart: "What do you think this behavior is like? "

"This behavior is like intermittent flashes in the dark wasteland, or regular beating of gongs and drums in a fog." Shi Tiexin said his own opinion: " I think this is calling for help or warning."

At this moment, sister Mengmeng’s communication came in: "Come to me now."