In Ye Xiuwen's eyes, S.H.I.E.L.D. is as mysterious as Hydra. Whether they are official organizations or non-governmental organizations, Ye Xiuwen is not very clear until now. After all, in this world, there are many mysterious organizations, which are still unknown.

For example, if it weren't for Ye Xiuwen who exterminated the Skeleton Legion, where would anyone know about Hydra?

And Hydra also borrowed the Skeleton Army to cover itself.

So in this world, how many organizations like Hydra there are, Ye Xiuwen can't say clearly. Therefore, with the help of S.H.I.E.L.D., to eradicate the Antarctic base of Hydra, Ye Xiuwen must observe it carefully.

At this time, the old wolf thought for a while and said, "Black wolf? Why do you say that this S.H.I.E.L.D. is so sparing? Is there something they want in this base? ”

"It should be so, or maybe their hostage is important, or maybe they want to get Hydra's research materials." Ye Xiuwen replied.

"Then you just agreed to them so readily?" The old wolf was still puzzled.

"There are several reasons for this, first, we need to have information about the Hydra hierarchy.

Second, Hydra's base is under the ice, and if we attack rashly, we will lose money. And it would be great that S.H.I.E.L.D. could lead the way for us.

And the third point, I don't think S.H.I.E.L.D. will be able to eat such a big piece of cake. Ye Xiuwen explained.

"Why?" The old wolf asked rhetorically.

"If they had done it, they wouldn't have ventured to join us." Ye Xiuwen smiled, and the old wolf understood. stared at the big screen with Ye Xiuwen.

But on the big screen, you can't see anything, only a white expanse.

"Bugs, you have to hurry up, so we can get more good."

Ye Xiuwen suddenly said to the insects.

“................................................”

The insect was speechless, and pouted at Ye Xiuwen.

"How?" Ye Xiuwen asked when he saw the insect's funny expression.

"File encryption is a quantum cipher." The worm was speechless.

"Quantum cryptography?"

Ye Xiuwen seemed to remember that quantum cryptography is the use of a kind of physics knowledge to develop a cryptosystem that cannot be cracked, that is, without knowing the key used by the sender, the receiver can hardly crack and get the content.

This kind of cryptosystem is very peculiar, and it is fundamentally different from the traditional cryptosystem.

It relies on physics as a key aspect of the safety model rather than mathematics.

Because quantum cryptography is an uncrackable cryptosystem developed based on the application of individual photons and their inherent quantum properties, because the quantum state of the system cannot be determined without interfering with the system.

Theoretically, other particles can also be used, but photons have all the required qualities, their behavior is relatively easy to understand, and at the same time they are the most promising high-bandwidth communication medium information carriers of fiber-optic cables.

Here's an example.

Suppose two people want to exchange information securely, name it Alice and initialize the message by sending Bob a key, which may be the pattern of encrypting the data message. is an arbitrary sequence of bits, sent in some type pattern, that can be thought of as two different initial values representing a particular binary bit (0 or 1).

Let's assume that this key value is a stream of photons traveling in one direction, with each photon particle representing a single bit of data (0 or 1). In addition to running in a straight line, all the photons also vibrate in some way. These vibrations occur in a space of 360 degrees along any axis, and for the sake of simplicity (at least in quantum cryptography), we divide these vibrations into 4 specific states, i.e., up, down, left, right, left, right, and the angle of the vibration is along the poles of the photon. Filter, which allows atoms in a certain vibrating state to pass through without any change, and causes other atoms to pass through after changing the vibrating state (it can also completely block the passage of photons, but we will ignore this property here). Alice has a polarizer that allows photons in all four states to pass through, and in fact, she can choose to filter along a straight line (up, down, left, right) or diagonally (top left, bottom right, top right, bottom left).

Alice switches her vibrational patterns between straight and diagonal lines to filter out individual photons that are transmitted at will. In this case, one of the two vibration modes is used to represent a single bit, 1 or 0.

When receiving a photon, Bob must measure each photon bit with a straight or diagonal polarizer. He may or may choose the right polarization angle, or he may make a mistake. Since Alice was very random when choosing a polarizer, we don't know how the photons react when she chooses the wrong polarizer. So it's nothing less than a cryptographic puzzle that can't be solved.

It's a lot of scratching my head for this kind of password bug, but it's only a matter of time before I want to crack it.

Therefore, the other party came up with such a problem for the bugs, just to buy time.

Ye Xiuwen asked the bug how much time it would take to unlock the password, and the bug said that it would take at least two hours.

"In two hours, S.H.I.E.L.D. will launch an attack on Hydra's base in two hours." Ye Xiuwen said to the old wolf again.

"Ahh Let's take a look at S.H.I.E.L.D.'s performance. ”

The old wolf said, and then watched with Ye Xiuwen quietly. But for some reason, at this time, there was still nothing in the sky above the Hydra base.

And it was at this time that Rohan returned.

Ye Xiuwen saw Luo Han and asked, "How is it?" ”

Dr. Yang said there was no problem. Even if the opponent is a piece of iron, it will be pierced by our bullets. And she also prepared an electromagnetic rifle for us. She said that as long as she was hit by an electromagnetic rifle, even a dinosaur would have to lie on the ground for half an hour, hehe! Rohan smirked.

"Then there's no problem, you can come and have a look."

Ye Xiuwen motioned for Luo Han to sit down, but Luo Han stared at it with wide eyes for a long time, but he didn't see anything, and said strangely: "It's all white, what are we looking at?" ”

"S.H.I.E.L.D. bought itself two hours. I don't think they're going to do nothing. Ye Xiuwen shook his head and said, but at this moment, there were suddenly four more black dots on the screen.

These four black dots appear suddenly. Ye Xiuwen and the old wolf didn't see it at all before.

The old wolf was also very strange, and sat up straight, staring at the four black dots.

Ye Xiuwen moved the mouse and clicked to enlarge the four black dots. It turned out to be an airplane.

Like a seagull, the plane hovers in the air, slowly approaching the ground.

"When did they show up?" The old wolf was still puzzled.

"These aircraft are supposed to be stealthy. So we didn't look at the Word. See how many of them there are and what equipment they have. It's also a good opportunity for us to get to know S.H.I.E.L.D., and I promised them to play as strikers, but I didn't just say yes. ”

Ye Xiuwen smiled evilly, obviously who suffered from this deal, not necessarily! ......

(End of chapter)