"Never cracked? What does this password mean? Munch looked at Bobo with a helpless expression. He knew every word on the screen, but it was connected and he couldn't understand it at all.

"This is a very famous math problem," Bobo told Munch, "and prime numbers, also known as prime numbers, are numbers that are only divisible by oneself and 1." Bobo slowed down his speech so that Munch could follow up on what was going on.

"The number of primes is infinite, and a very small number of them can be written as 2 to the nth power minus 1, and at the same time satisfying n is also a prime number, such prime numbers are called Mersenne primes. So far, only 55 have been found, and the one-time password for this memory card is apparently based on the 56th Mersen prime. ”

Munch seemed to understand and continued to ask. "What does that mean?" means that the password is uncrackable. Even today's most advanced supercomputers, capable of 24-hour continuous computing, would take at least hundreds of years to unravel them. Even if the 56th Mersenne prime is found, the hundreds of millions of digits make it impossible to enter. The person who designed this password was a genius. ”

Looking at the dynamic password box that kept beating in front of him, Munch fell into deep thought, "What if you force brute force cracking?" ”

"Someone who can set such a complex password must have thought of the situation you said, and I guess that if nothing else, the result should be automatic destruction." Bobo tried to find the design parameters of the X-03 memory card from the database, hoping to find a breakthrough in decryption.

"What exactly does Beverly Andrew want to hide, and he needs to put up such a high-security access barrier?" Munch held his forehead with both hands, gently rubbed the top of his eyebrow bone, and continued to ask, "How was the progress of physiological data correlation just now, and are there any new discoveries?" ”

Bobo closed the page of the memory card and recalled Xiao Hei's behavior statistics table, "I just checked, and the freshman system only saves your physiological data for the last month. ”

Munch was a little surprised: "So little? No, am I running out of storage space? Bobo said word by word: "It's not about storage, because you're not a member." Munch looked helpless: "Okay......"

"According to the last few data, when Xiao Hei has abnormal behavior, your adrenaline, thyroid hormone, dopamine and other secretions have increased significantly. In other words, you're both excited or nervous. But the current sample is too small, and more data is needed to analyze deeper connections. If the sample size is sufficient, perhaps it can be ......" Bobo stopped elaborating, and the portrait of the code showed tangled emotions.

"What can be? Don't talk in a hurry. Munch was a little angry when he saw Bobo's appearance of wanting to speak and stopped, "I found that after your update is completed, the bad problems of human beings have increased a lot!" I have learned to hide and tuck my words! ”

"The reason for the hesitation is because it's just a guess on my part, I can't verify it, and it's probably going to hurt you......" Bobo said with a slight reproach in his tone.

"That's against the three principles of robots, isn't it? It doesn't matter, if you have any ideas, you can just say it, and I will decide whether to adopt it or not, and I will bear the corresponding consequences. The more Bobo was like this, the stronger Munch's curiosity became.

"If there is enough data, after the accurate secretion ratio is obtained through analysis, the implant is actively injected into the venous blood vessels, and the physiological state in the body is dynamically adjusted to achieve the basic conditions before the Xiaohei abnormality. Although we can't predict Black's behavior, we can actively wake it up......" Bobo's voice became quieter and quieter, he knew the danger of this kind of experiment, and if the match failed, Munch's life could be threatened.

Munch thought seriously for a moment and replied, "There doesn't seem to be any other way at the moment, Bobo, you can try it in this direction first." I'll give you more physiological data, just ...... The error tolerance rate of this experiment is not very high. He smiled bitterly. By the way, Bobo, one more thing, when I take a break, you can try to build a model of the mechanical heart, I don't have a clue right now. ”

What made him smile wryly was not only Bobo's fatally risky proposal, but also a strong sense of uncontrollability about the status quo and the future. What happened one after another greatly drained his energy. Looking through the screen wall, looking at the empty traffic tracks outside the lobby of the City Security Bureau, my eyelids gradually became heavy, and I finally fell asleep.

……

In the early morning of the next day, the City Security Bureau, located on Huanyu Street in the Lille district of Tozcana, once again ushered in a new morning sun, with an architectural shape similar to that of Saturn, reflecting a little light in the surrounding area under the sunlight.

The spherical body of the City Safety Agency, half exposed above ground and half hidden underground, is surrounded by a ring of stars used for traffic at the middle junction. The ring is divided into three layers, upper, middle and lower, and each track runs smoothly at different speeds. With an angle of 120 degrees, three virtual water drop vehicle traffic routes are evenly divided, which intersect and integrate with the urban transportation system.

Calvin stood on the star ring, passed the identification, and followed the automatic track, to the lobby of the City Security Bureau.

The huge spherical space is set against a dark blue background, with many suspended spherical objects, spherical lights, spherical screens, and spherical guidance robots of different sizes and different colors and materials, all of which are like pearls sprinkled all over the sky, all floating freely in the ground and in a weak gravity environment.

The underground half of the area is divided into different functional areas: the Armed Forces Section, the Transportation Section, the Special Service Section, the Archives Section, the Logistics Section, etc., and the different administrative units have their own unique colors for easy distinction.

Standing in the waiting area of the hall, Calvin clicked on the badge he wore on his chest. A spherical robot flew in a semi-parabolic trajectory from the air and asked him about the area he wanted to go, and he said, "Go to the core brain".

After verifying that the access rights were matched to the time of the interviewee, the spherical robot's outward aperture of light turned dark purple, the glass shield on top slowly opened, and a disc-shaped standing area appeared, Calvin stepped in, placing his hand on the raised guardrail around it.

The robot flashed its signal lights and flew towards the core of the second basement level of the City Authority, landing in front of Bridget Peyton's office.

Calvin stepped out of the spherical robot, and the office door opened automatically. Directly in front of the doorway is a giant motif of an eagle with outstretched wings, enveloping the silhouette of the city of Totzcana, with a mixture of guns, cannons, flying machines and the words of the city's security bureau at the bottom.

In the center of the room slowly rotates a virtual sphere, which is the real-time operation of the various spaces of the building. On the streamlined desk, there is a moving photo of Donnie Young and the man next to him, with their arms on each other's shoulders, looking very intimate.

"How are you feeling today?" The spinning sphere was replaced by a sudden avatar of a goatee above his lips, sunken eyes, and a vintage pipe, the other person in the photo, Bridges Payton, who is also the city's top administrator.

"Didn't come today? You can't always avoid me, can you? But that's okay, it's okay to just talk like that. The appearance of the avatar made Calvin hesitate for a few seconds, and then said emotionally, "I'm telling you, Uncle Peyton, ah, no, it should be called Director Peyton." That's the way I want to live! I went to investigate last night, and after less than twenty minutes of chatting, I found that the guy named Monk Bryan had several suspicious places.

You can believe it, I didn't take the elevator and climbed a dozen flights of stairs all the way! There must be something wrong with the man's bookshelf, as well as the diary he claims to have! By the way, and his dog, I have to look up the origin of his live pet, and my implant is already paired with him! And I've got a scan sample of him!

……

You can transfer me to the front line, it's too boring to do the sorting of evidence files. I also want to do what a cop should do, like my dad! Gather evidence, hunt down criminals, find out the truth......" Calvin crackled at length. Bridge didn't interrupt him, just smoked silently. After a long while, Calvin finally stopped talking.

"Finished? Isn't that enjoyable? Bridge's avatar walked up to Calvin's side and reached out to put his hand on his shoulder, as if it were on his father's shoulder, but the avatar passed through Calvin's body.

Bridge put the cigarette in his mouth, inhaled sharply, and slowly exhaled. "Okay, there's only one chance to experience it, you ...... You'd better continue to work in evidence management...... This work is important, and it is the basis for all righteous deeds. It is already a violation of principle to temporarily transfer you to participate in the inquiry work, so let's do this for now, and I will consider transferring you to another post when I have the opportunity in the future. ”

Calvin's body instantly softened, and most of the passion just now was removed. "I can do it! It's true! Look for evidence from the clues and find loopholes in the truth of lies, I really can! I can do as well as my dad! I don't want to be called the man who 'got a job from my father's death'. Trust me once, Uncle Peyton! Calvin spoke in a hoarse, crying voice, almost pleading.

Bridge didn't say anything more, just waved his hand, and the guide robot waiting outside the door entered the room and took the lonely Calvin out. After the door closed, the wall with the badge parted from the left and right, and Bridge stepped out. Thinking about Calvin's actions just now, he sighed softly.

Pacing to the motion photo, pick up the frame and place your left thumb on the fingerprint scanning area of the frame. A fragmented video then plays in the center of the room. It was the last message Donnie sent to Bridge before he disappeared, and he had seen it countless times.

Donnie Young sat on a black rock, his eyes full of exhaustion and fear, much older than in the photo, and his voice was rapid and trembling, "As the case progresses, I have touched the corner of the dark abyss, and the forces involved in it are more complex than we imagined." Behind this matter, it is not about a few people or a few cities, but about the entire upper region. Through my investigation, I discovered that there was some kind of mysterious passage between the upper and lower regions, and the forces of the lower regions may have infiltrated ...... Bridge, my comrade-in-arms, please promise me to keep Calvin away from all this, his life should be carefree, safe and happy, and I can't let him be swallowed by darkness anymore. Finally, all the evidence I have compiled has been sent to you, if I fall...... Bridge, I hope you can continue to investigate with justice. ”

The image vanished, and Bridge's expression was solemn, transferring the information from the frame to the deeply hidden electronic document, to which he had access to the entire City Security Bureau. The name of the document is: TS-010628.