Chapter 175 Crack

[Ask for a monthly ticket~]

The secure access control system of Manhattan Trust Bank is actually an electronic lock device controlled by a single-chip microcomputer.

Unlike traditional mechanical locks, this access control system combines the latest electronic technology and uses a special circuit to switch and control the anti-theft door, but this control is artificially complicated. It is not simply powered on and its control motor will start, but needs to give its special circuit board a specific letter. No, this signal is an encrypted "fingerprint" password. Only when the given signal matches the original set fingerprint password can it start smoothly.

This access control system uses a 16-bit counter rolling password grouping scheme, that is to say, its fingerprint password has a total of 2 16 power, that is, 65536 encoding scheme, which can almost ensure that the encoding of each transmission is different.

Assuming that the anti-theft door is opened ten times a day, it will take a total of 18 years to encounter repeated coding.

In theory, cracking this fingerprint password is not working, but Lin Hong found that there is a loophole in the security of this password. As long as you use the wrong password to transmit it, the black box will send a set of codes in infrared, and the time interval is only 15 milliseconds, that is to say, If it continues to be triggered, it only takes 65536X15 milliseconds, that is, about 16 minutes to make the code repeat, which makes it possible to crack the access control system.

The manual in Lin Hong's hand may not be seen in the eyes of others. The dense circuit diagram is simply a decoration for others. Only when there is a fault sometimes, will it be partially checked.

However, such a circuit diagram is not a problem for Lin Hong at all. After looking at it for a while, he fully understood the principle and could even simulate it in his mind.

He quickly designed a cracking scheme in his mind, so he began to do it.

"Uncle Stone, what are you doing?"

Phylgaris saw that Uncle Stone began to untie the computer case, and then connected one of its interfaces to the calculator in his hand with a cable.

"I want to write a program to save all the codes sent by the black box, and then use the saved password dictionary to try to violently crack the access control system."

Originally, according to the matching circuit of the original manufacturer, the signal transmitter and receiver will have an authentication process. Only this authentication passes, and then the signal transmitter will generate an encoding key on the spot. After the receiver in the black box is received, it will match with the internal rolling password. If the match passes The security door will be opened.

However, Lin Hong doesn't know which algorithm they use to encrypt and code, so he can only take the stupidest method to list all the passwords and then match them all. This is violent cracking.

"You mean you have a way to open the security door?" Phylized was overjoyed when she heard the words. It didn't care what violent cracking was, as long as it could be opened.

"Hehe, there should be no problem!" Lin Hong smiled.

"Uncle Stone, you are so awesome! I knew that there is nothing that can embarrass you!"

Felis was so excited that she hugged Lin Hong and kissed him hard on the face.

XXXXXXXX

Outside the trust bank, negotiator Brian and FBI agent Edward are talking to the bandits in the communication car.

It is impossible to complete the request made by the robbers. They try to communicate with the other party as much as possible, hoping that the other party will make some other requirements.

But the other party has been grasping this point and hung up after a few words.

Edward carefully noticed that this time, the sound transmitted from the receiver seemed a little strange.

"Brian, replay the recording of the conversation just now." Edward thought for a moment and said.

"Good."

Every time they have a conversation, the equipment in the communication car will be automatically recorded for reference in the future, or you can find any clues from it.

Of course, the other party's voice has obviously been processed, hoarse, low and a little vague. However, as soon as possible, after listening to it again, Edward still heard a little clue from it.

"Brian, have you noticed that his voice has changed a little this time?"

"Yes, there seems to be an echo, and the other party seems to have moved to a small room." After his reminder, Brian also noticed it.

Then, Edward asked the technician to separate and amplify the audio track of the recorded background noise.

As a result, they heard a relatively clear background noise, the sound of water, and the sound of friction of something rolling on the ground.

Edward frowned and thought for a long time, and then said, "Keep in touch with him, saying that he has applied for a special order, and the superior has agreed to the other party's request."

However, this time, no matter how Brian dialed, the other party did not answer the phone again.

"They must be playing some tricks. Now it seems that we are not procrastinating, but them!" Edward walked back and forth, and his thoughts began to become clearer. "The demands they put forward are impossible to complete at all. The other party is not a fool. On the contrary, his IQ is still very high, that is to say, he deliberately made an unatruly request.

When Brian heard this, he suddenly said, "You're right! At the beginning, they asked for a jet plane, but they didn't expect that we would agree to this request with the cooperation of Mr. Morgan, so the other party proposed to control the airport..."

"What on earth do they think?"

Brian rubbed his bald head hard.

However, at this time, the exclamations of their colleagues came to their ears.

Henry, who was on duty outside, ran in and said, "The security door has been opened!"

Edward and Brian looked at each other and immediately ran outside.

When Brian came outside, he saw the heavy security door at the front door slowly rising.

"attention! ( Attention, everyone!)

Brian's promotion loudly commanded many police officers to surround the whole bank. So far, they don't know what the robbers want to do.

Since the robbery began, these anti-theft doors have not moved, and now they have finally opened, which is very good news for them.

The strong searchlight was hit at the door, illuminating the gate of the bank like daytime.

As the anti-theft door rose, a group of people in blue work clothes began to rush out.

"Ready!" The ESU leader of the emergency service team shouted at this time.

As he remembered his shouts, many ESU special police officers picked up their weapons and aimed at them!

Brian's pupils shrank suddenly. He saw an old man in the crowd, who he had seen in the hostage's photo.

"HOLD! HOLD!" Brian ran and shouted, "There are hostages in it!"

If he accidentally shoots the hostage as a robber, the leak will be big, and he, the policeman, probably won't do it any more.

The people who rushed out of the bank were wearing the same clothes as the bandits, so that they could not tell which were the bandits and which were hostages. Moreover, they couldn't figure out which one the other party was playing for a while. Why was the hostage suddenly released?

"Everyone lay down with their heads in their hands!"

"Don't move!"

The policeman with live ammunition violently pushed the disobedient people to the ground, then pointed the gun at their heads, then held them down by other policemen, put their hands behind their backs, and then handcuffed them.

"I'm not a robber, I'm a bank clerk!"

"What are you doing? Let me go!"

"Oh my God! Do you think I can be a robber when I'm old?

"Damn it, take your gun!"

Many people resisted violently and cursed, but to no avail. They were forcibly pressed to the ground by the police and then handcuffed.

Lin Hong and the others were not in such a hurry to rush out. Of course, with him, there was also Phylise and the "king of hostages".

"Son, why don't you rush out?" The king of hostages asked him with a smile.

Just now, everyone rushed out of the crowd, as if there were vicious robbers chasing with guns in the back.

It's not their fault. This closed bank feels like a cage, leaving a huge psychological shadow in their hearts. It is estimated that they will not step into this bank for a long time.

Just now, Matthew and Mu Sitong also wanted to rush out with everyone, but they were stopped by Lin Hong. In fact, just now, Lin Hong really wanted everyone to go out slowly one by one. It was better to communicate with the police before going out, but at this time, everyone was not in the mood to listen to him at all. What, scrambling to leave this horrible place.

"If we rush out like this, it's easy to cause misunderstanding." Lin Hong didn't say much. The old man was very intelligent. He may have walked more roads than the bridges he had crossed. Naturally, he could understand his subtext.

"Not bad. Smart, calm and brave. The old man kept nodding and looking at Lin Hong, "Son, what's your name?"

"STONE.LIN..."

"STONE? Nice name. I hope you don't waste your talents and talents. If you have the opportunity, you should do your own career on the world stage and do something meaningful for this society.

After all, we have experienced a disaster together. In the words of Eastern Buddhism, it is called 'destined'. This is my business card. If you have a chance, please call me.

After saying that, the old man walked out of the door with old steps.

Lin Hong looked at the business card in his hand. The style was very simple. There was only one name in the middle of the white card.

"Walter. Schloss?"

At this time, Phylise came over and looked at it. After seeing the name, she couldn't help exclaiming.