"That's it, is that okay?"

Listening to the voice coming from the loudspeaker, as if persuaded by a friend, Liang Jingmo didn't say a word. As he spoke to Roren, his gaze kept on the numbers displayed on the screen. At this time, like the previous three doors, the traversal of this door is nearing completion.

Under his gaze, the beating number finally crossed the four-digit threshold of "9999" and officially began to traverse the five-digit number. It seems that the announcement of the owner of the house is not a lie, and he can really adjust the password to six digits.

"It's not scary to say it casually." Liang Jingmo shook his head.

His method is just like what Luo Lun said, the core is a brute-force cracking program, to put it bluntly, it is to try it one by one, from the first number to the last. Whether it's five digits or six digits, it brings a tenfold or even hundredfold increase in numbers, and the one-minute cracking time eventually becomes more than an hour, from a moment of waiting to an unacceptably long time. Even if it had gone well, there had been only enough time for him to open a few doors in the hours before dawn.

Judging from the density of these doors before, even a few more doors would not be enough for him to explore this underground area.

"The time until dawn - according to three hours - is likely only enough to open three doors......," Liang Jingmo said to himself, "Three doors, just enough to turn back and leave the way you came." ”

"That's right." "If you turn around now, if you're lucky, you'll at least have time to leave under the cover of night." If you insist on going your own way, if you have to move forward, it will be too late for you to regret it. ”

"Sounds like I'm running out of options." Liang Jingmo scratched his head and suddenly smiled slightly, "But what if you do this?" ”

He raised his hand and nudged it against the door in front of him. Only a few rumbling sounds were heard, and the heavy door slowly opened in front of him as if it had been enchanted!

"What's going on! How to do it! ”

Luo Lun on the other end also seemed to have discovered the fact that the door had been opened, and couldn't help but let out an exclamation.

"Huh, 'How'?"

Liang Jingmo glanced back meaningfully and shook his fingers: "You just continue to look there with this question, I'm going to take a step first." ”

He did what he said, and he actually stepped forward and walked straight into the door. There was another door in front of him, but before he could get closer, it opened on its own, as if Moses had parted directly from the Red Sea.

"How is that possible!" Luo Lun was shocked again!

There were no monitors in the tunnel, only a micro-bug-like radio, so he could hear the other person's voice, but he had no way of knowing how he did it. In front of Luo Lun, the red lights marking the doors of the basement were flashing, and several of them had turned green, indicating that they had been opened. He pressed the button to re-lock them all, and even entered the new code with his finger at a rapid pace, only to be seen in a matter of seconds when the flashing red doors turned green again - it looked like the crack was much faster than the four-digit code!

This situation was completely different from what he had imagined, and Luo Lun was shocked to the point of being completely incoherent.

"How is this possible...... It's illogical......" He kept pressing the locked button in vain, repeating the operation of changing the password almost mechanically, and then watched in despair as the doors along the way were opened by the other party in the interval between the operations.

"How is this possible......" he almost wailed.

No, of course this is possible--Xiang Nanxing, who had been silent, listened to this voice and couldn't help but sneer--This is still caused by you.

Standing behind Liang Jingmo, he clearly saw how everything happened, although he could only say that he understood a little in terms of computers, but combined with the changes in the situation before and after and the reaction of the other party, he also probably understood Liang Jingmo's strategy.

First of all, Liang Jingmo's method of opening the first few doors is indeed as Luo Lun speculated, which is not listed for the time being, although the process of Liang Jingmo hacking into the access control system with his mobile phone is very shocking, but as a hacker who has invaded an international-level system, it is normal for him to have such a technical level.

The real subtlety is the back hand that he laid at the same time.

When Liang Jingmo began to crack the password, Xiang Nanxing noticed that he also secretly put a mysterious small program into the system. He won't be able to understand the role of this applet until a few minutes later, but even then, just looking at Liang Jingmo's operation methods, he can understand: in fact, with Liang Jingmo's technology, he can use other smarter and more convenient algorithms to find this password without brute force. Even if he has to use brute force, he can also use more flexible methods, such as changing the direction of traversing the data, so that the time to open the door is not easy to see the pattern, so that no one will guess his method later.

But in fact, his real purpose was to show Roren his methods. Because among the many algorithms, only brute force cracking is the most dependent on the number of cipher bits. The difficulty of cracking it will increase tenfold as the number of bits of the password rises, and to fight against brute-force cracking, it is pointless to just keep changing the password, and the real effective way is to change the number of bits of the password.

Liang Jingmo saw early in the morning that although the default password number of digits of this access control system is four digits, the administrator with the highest authority can modify the settings so that it can reach up to six digits. His purpose is to lure Luo Lun to use this permission, not only to directly change the four-digit password at the surface level, but to modify the number of digits at the bottom layer.

At that moment, the Trojan horse program that Liang Jingmo planted at the beginning began to work. It captures Luo Lun's operation on the other end like a hook, and then copies the permission as it is and transfers it to Liang Jingmo's connected phone. In this way, let alone get the changed password instantly, even if he wants him to change the password like the other party, he can do it.

So in the end, things became what they are now. The administrator of the access control system is equivalent to one more out of thin air, Liang Jingmo, who is obviously an intruder, but now has exactly the same operation authority as the owner Luo Lun, and can come and go freely in this underground space.

"Hackers are terrible creatures."

Xiang Nanxing thought secretly in his heart, shook his head, and at the same time took a step to catch up with Liang Jingmo in front of him. However, at this moment, something unexpected happened.

I saw that the door that was originally open suddenly slammed shut, and then it was never opened again. Although these doors were closed several times during the battle between the two of them before, every time Liang Jingmo regained control, he would reopen the doors on the road to make it easier for Xiang Nanxing to follow. This time, however, the closed door never opened, but the door behind him closed and reopened, as if to welcome him back the way he came.

"Is that what you mean by telling me to go back?" Xiang Nanxing thought about it, and laughed angrily. He smacked his thigh hard, glaring angrily, as if he wanted to break his leg with a punch.

Compared with his complaints against Liang Jingmo, most of his anger is directed at himself. Before this operation, he knew that the two had some differences in philosophy. Compared with him, who always wanted a peaceful solution, Liang Jingmo simply inexplicably insisted on the concept of killing without mercy from the beginning, and such differences continued until just now. During the whole infiltration process, the two tacitly did not mention this topic, as if they coincidentally planned to put aside the dispute and cooperate first.

But when it comes to the goal, there is no escaping this problem. The part of the courtyard is the most treacherous and requires two people to work together, but in this place, one person can actually do it. He has been following Liang Jingmo, like an insurance valve that does not kill, and he also knows that the other party has been looking for an opportunity to get rid of himself and act alone.

At such times, he was only slightly distracted, and he lost the opportunity to catch up forever.

At this point, it's too late to regret it. Xiang Nanxing did not have the ability to open these password doors, and the only mobile phone connected to the access control system was also in Liang Jingmo's hands. He manipulated everything in this underground space, whether it was to seal his path or politely open the door back for him, it was nothing more than a matter of his fingers.

can be looked at from another angle, and now this is already a manifestation of his importance to the friendship between the two. Before this, Liang Jingmo often made some surprising moves, and he never considered the feelings of his fellow travelers at those times.

Xiang Nanxing knew very well that if it was the previous Liang Jingmo, he would 100% choose to trap people in the underground secret passage at this time, because his actions would inevitably anger Xiang Nanxing, and letting an enraged person go back would not do him any good, it would only increase the unpredictable part of the plan in vain.

He is willing to take such a risk and does not want to trap him, which can be regarded as a gesture of goodwill.

It's just that Xiang Nanxing still can't accept such kindness.

"I can't leave yet."

He silently pressed the closed door and thought to himself. If you leave here, it is equivalent to giving everything to Liang Jingmo to deal with, so that the final outcome can be predicted. Xiang Nanxing remembered the scene in the video where Luo Lun rescued the little beggar, and a sense of mission suddenly surged in his chest.

"There must be some other way to solve it." He spoke into the intercom headset in a very soft voice, then raised his hand to turn off the microphone. This was the last sentence he left for Liang Jingmo, and he didn't know if the other party could receive it in a place where the signal was so bad.

However, no matter how strong the determination is, it cannot make up for the huge backwardness in the situation. If no miracle happens, he will continue to be held back here, and Liang Jingmo will run amok until he finds his target and kills him.

It was only at this moment that a miracle happened.

Xiang Nanxing felt that the door panel under his fist seemed to vibrate slightly, and then he heard the sound of stones rubbing against the floor. He tried to push it, and it felt like it had never been so heavy, as if it had been pressed from behind by an invisible hand.

At the same time, Liang Jingmo, who was on the other end of the secret passage, was standing in front of the closed gate with his waist crossed. He quickly pressed his phone, looked at the messages returned on the screen, and couldn't help but burst out with a foul word.

"Damn, there's still this hand."

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