Instructor Yan stared at the safe, analyzing Shang Rui's personality and behavior pattern in his heart, hoping to guess the way in which the bomb in the safe could be detonated through the way he often did things. But he has never had a good impression www.biquge.info of Shang Rui, and his understanding of him is limited, even if he analyzes it from the data, it is not as thorough as having a long-term contact with a person. And the person who knows Shang Rui best is Liao Fei, and he is the only one.

Shang Rui has been undercover by Qin Guirong's side all these years, and he is wary of everyone and has not had much contact. Although Liao Fei and Shang Rui had been in contact for a long time a few years ago, Shang Rui's approach may have changed slightly. However, the nature of the country is easy to change, and it is still possible to analyze the clues from the previous practice.

Instructor Yan smiled bitterly, he knew that he would not knock Liao Fei unconscious! It's good now, if you want to know from Liao Fei's mouth, it may be necessary to finish the operation, and I'm afraid it will take at least ten hours later. Instructor Yan didn't want to wait, and he didn't have time to wait, he thought about the equipment currently organized, and said: "Let someone send a laser punching machine, and ask the safe manufacturer, if you want the most accurate thickness of the steel plate, you must open the safe today, and you can't hurt the documents inside." ”

The laser punching machine was delivered quickly, and the technician was responsible for adjusting the laser intensity, punching depth, and would rather punch several times to avoid the laser energy being too strong, and igniting the documents that may exist inside after penetrating the steel plate.

Instructor Yan stood not far away, wearing laser goggles, nervously staring at the technicians for punching holes.

The technician first reduced the thickness of the steel plate by two millimeters before starting the machine and punching the safe for the first time. The speed of laser punching is fast and will not produce vibration, but the disadvantage is that there is temperature, Instructor Yan hopes that Shang Rui will not be crazy enough to use all the detonation methods, in that case, the complexity of the bomb inside may reach the point of outrageous.

Instructor Yan and the technicians held their breath and looked at the safe nervously, for fear that the safe would explode or destroy the materials inside. Fortunately, when the laser punch stopped working, the safe did not explode or make an unusual sound. The two breathed a sigh of relief, and the technician measured the depth of the hole, and after confirming that it was exactly the same as the set score, he readjusted the laser punch, looked back at Instructor Yan, and under the nod of Instructor Yan, he started the machine again.

The laser completely pierced the steel plate, and there was no fire from the paper ignited, which once again put the two at ease.

The technician pokes the camera through the small hole in the safe and examines it closely. After a patient search, technicians did not find anything suspected to be explosives in the safe, nor did they find any device that could trigger a deflagration.

Instructor Yan asked the technician to step back, enter the password of the safe, open the safe, and take out the contents in the same way and place them on the table. There were a few cash and jewelry boxes on the table, each of which was opened, and nothing could be found except for the purchase receipt. Instructor Yan carefully groped up and down the safe, but did not find any hidden documents.

Isn't the thing here? Instructor Yan couldn't help but be a little puzzled. Is Liao Fei's decryption mistake, or is Shang Rui simply playing tricks? Instructor Yan set his eyes on the partition in the safe.

Lin Jiaqin's safe is a small household safe, and the partition is movable and removable. Instructor Yan took out the two partitions and knocked on them, and the sound of the first partition was dull, and there was no mezzanine. The sound of the second partition is hollow, and there is obviously a hollow place in the middle. Instructor Yan's face showed joy, and he found a moving wooden strip at the end of the partition, and when he opened the wooden strip, there was still no paper file inside. Instructor Yan's eyelids jumped, and he erected the partition and fell down. A USB stick slipped out of the partition and fell onto the table.

"Give me the computer."

The technician placed the computer in front of Instructor Yan and automatically took two steps back, avoiding the screen.

Instructor Yan was very satisfied with his movements, connected the USB flash drive, and prepared to check it. But he clicked on the drive letter of the U disk, but a dialog box popped up, and the password prompt bar on it read: I know I will lose, this is the last gift left for you. Below is a password box for people to enter their passwords. Seeing this, Instructor Yan had a headache again. Your uncle, Liao Fei has found the USB flash drive, and you still have to set a password, isn't this deliberately embarrassing! The key problem is that the password prompt is just a paragraph, and the prompt is a fart! How do I enter my password? Chinese characters, numbers, and special symbols are completely beyond the reach of others to guess.

"You see, how long it takes to crack the password." Instructor Yan handed over the computer to the technician.

Professional things are handed over to professional people, Instructor Yan is okay with people, but blind when dealing with computers!

The technician fiddled with the computer and tried to crack it with special cracking software.

Instructor Yan asked anxiously, "How is it, how long will it take to crack the password?" ”

The technician's forehead was sweaty, and he said: "This USB flash drive uses a 2048-bit military encryption method, and if you want to crack it, you need to use a supercomputer, and it will take three to five years." ”

"How many years? So what's the use of cracking it out? "Instructor Yan was angry at this time.

Generally speaking, there are not many encryption methods that are absolutely difficult to crack, although every country is trying its best to build this encryption method, such as quantum cryptography, randomoracle, etc., which can be regarded as encryption methods that cannot be cracked for the time being. But the road is one foot high, and the magic is one foot high, even if there is no way to crack it now, it may be cracked in the future. Since absolute security is difficult to achieve, cryptography scientists have retreated to the next best thing and sought a relatively secure approach. This kind of relative security can be roughly expressed as follows: the cost of cracking a piece of information, including computers, manpower, electrical energy, etc., far exceeds the value of the information itself, and it is considered to be relatively safe; Or the time it takes to crack a piece of information is much greater than the period for which the information needs to be kept secret, and it is considered relatively safe.

Shangrui's encryption method is relatively secure, you may crack it, even if the country does not take into account the use of supercomputers, the time cost is unbearable.

Instructor Yan pulled out the USB flash drive and said, "Make a book of all the things in the safe and send them to the laboratory for examination to make sure that there is no hidden information left by Shang Rui in it." ”

"Yes."

"Remember, you didn't see this USB stick, and don't mention it to anyone."

"I haven't seen a USB flash drive." The technician guessed that Instructor Yan might be worried that the traitors inside would know and would try to go to the USB flash drive, but he didn't think much about it, not to mention that he knew the principle of confidentiality, and he didn't need to ask the reason for what he said, as long as he carried it out.

Instructor Yan left the room and drove to the hospital. When he was about to arrive at the hospital, Instructor Yan parked the car in a secluded place, took the USB flash drive out of his pocket, and stared at the USB flash drive, obviously struggling in his eyes. Eventually, Instructor Yan stepped out of the car, put the USB flash drive on the ground, lifted his feet, aimed at the USB flash drive, and then stepped on it heavily.

Syllable!

At the last moment, Instructor Yan moved his feet away and did not step on the USB disk. He picked up the USB stick, put it back in his pocket, pulled out a cigarette, and smoked it.

There may be information unfavorable to Instructor Yan in this USB flash drive, but Instructor Yan is not a traitor, nor has he done anything for Qin Guirong and Shang Rui. If you want to talk about the mistakes made by Instructor Yan, you have to start from a few years ago.

At that time, Instructor Yan had a young and beautiful daughter, who had good academic performance, was simple and kind, and made a boyfriend from a poor family during college. She didn't have any dislike because her boyfriend was poor, and she usually spent money whenever the two of them were together, if her boyfriend spent money, she would try her best to pick the cheapest thing, and her meals were often spicy hot and steamed buns, saving money for her boyfriend, and she was definitely a qualified girlfriend.

The university they went to was a film school, Instructor Yan's daughter was in the Department of Screenwriting and Literature, and her boyfriend was studying photography. Originally, the two were supposed to be golden boys and girls, and after completing their studies, they would become talents in film and television art, earn considerable money, and live a rich life. But something happened suddenly, which caught Instructor Yan's daughter off guard.

Her friends and roommates in the dormitory lost a lot of brand-name bags and other things, and everyone didn't care about it at first, there are not many poor people who study film and television, and occasionally losing things is nothing. But when things are lost one after another, people turn their attention to the person who has never lost anything, that is, Instructor Yan's daughter.

Everyone just suspected, there was no evidence, and the police did not find evidence that Instructor Yan's daughter had stolen anything. But the police persevered and continued to investigate. At this time, Instructor Yan's daughter's boyfriend suddenly testified against her, saying that she stole the things, and also said that she had a brand-name bag in the rented house outside, at first he thought she bought it, but who knew that it was stolen.

The police went to Instructor Yan's daughter's rented house to check, and sure enough, they found two brand-name bags here, which belonged to her roommates in the dormitory. In the face of conclusive evidence, although Instructor Yan's daughter flatly denied it, the police still determined that she stole the things. Because of her good academic performance, the school also takes into account the influence of the school, and the popularity of Instructor Yan's daughter is also good, although everyone is not ashamed of her, they still plead and don't want her to go to prison.

In the end, the police did not arrest her, but the school could not tolerate her existence and gave her the punishment of expulsion. And her boyfriend announced that he had broken up with her. For a time, Instructor Yan's daughters betrayed their relatives and left their families, and their lives were full of despair. She wanted to talk to her father and avenge her father, seeing that at that time, Instructor Yan was secretly training a group of people, and she didn't have any external contact tools. She felt that her life was full of gloom, and everywhere she went, it seemed that someone was pointing at her. In desperation, she chose to go back to school and jump off the building to prove her innocence.

When Instructor Yan heard that his daughter jumped to her death, it was like a thunderbolt from the sky. He immediately consulted the file and easily found many of its suspicious points. After a little investigation, Instructor Yan found out that it was not her daughter who stole the things at all, but her scumbag boyfriend. It was he who often disguised himself as a woman to enter the women's dormitory to steal things, and he finally got this incident, and he was afraid that the police would continue to investigate and arrest himself, so he put the stolen things in his daughter's rented house and reported it to the police.

The scumbag framed and abandoned his daughter, and at the same time had a relationship with a student of the acting department, and the stolen things were exchanged for money and spent on the students of the acting department, and his actions completely angered Instructor Yan.