Science and Engineering Bureau.

Director's office.

An old man with white beard angrily pushed open the office door and came in from the outside.

"Lao Li! I want to know what's going on! "

The move didn't frighten director Li, but startled his secretary.

If other people dare not talk to the director general of science and Technology Bureau like this, but academician Xue obviously does not belong to the category of ordinary people.

Let alone the science and Technology Bureau. Even the head of the industry and information department, the higher Department of the science and Technology Bureau, is more polite to this old man.

Seeing academician Xue at the door, director Li seemed to guess why he was here. He quickly lost a placatory smile on his face and put down his ballpoint pen.

"Why are you here? Please take a seat first Xiao Zhou, go to pour academician Xue a cup of tea, and then help me to send this document on the table to the material room to print out 50 copies and send it to Director Liu. "

"OK."

Knowing his intention, Xiao Zhou, the Secretary, quickly poured academician Xue a cup of hot tea with a smile, picked up the papers on the desk, and quickly walked out of the office, and conveniently took the door.

"Hum!" After glancing at the closed door and waiting for the footsteps on the corridor to go away, academician Xue took a sip of the teacup on the table and half drank it. He slapped the cup on the table and said angrily, "why do you ask me? It's not from you. How can it come? "

Can't director Li speak, academician Xue's mouth is like an open machine gun, firing like a breath.

"It's you who want to do quantum cryptography! Now it's you again! Half of the cryptography circles in China have got Shangjing. Our work has just begun. Don't you do a word? Is this a monkey? "

Hearing academician Xue's complaint, director Li's expression was slightly awkward. It's really his fault, but it can't be entirely his fault.

"This It's a little complicated. "

"What's complicated? Have I ever reminded you? Now the most advanced quantum computers do not achieve 100 qubits. It is simply wrong to regard a quantum computer with more than 1000 qubits as an imaginary enemy! "

In academician Xue's eyes, it's a decision made by layman clapping his head to engage in this kind of inexplicable subject. For a long time, he hates this kind of administrative behavior of giving directions to scientific research, which is not only a waste of resources, but also a play of research!

Director Li coughed and said.

"The reason for canceling this project is not because of this, and it's not entirely cancellation, just strategic adjustment..."

"What's that?" said academician Xue with an angry face

“…… Because someone has solved the problem. "

The office was quiet for a moment.

At the moment of hearing this sentence, academician Xue was stunned at the spot and came back to his senses after a long time.

“…… Solved it? What problem has been solved? "

"What else can that quantum encryption algorithm be --"

"how can it be!"

A pair of eyes stared round. Academician Xue's face was filled with disbelief. He thought that director Li was fooling himself, and the expression on his face was even angrier. "Half of the big bulls in cryptography are here. You and I said that the problem has been solved? Do you know what you're talking about? "

For a whole week, their research has not made any substantive progress. Now someone has told him that the problem has been solved? Someone in the place that he didn't know, completed the algorithm that all of them couldn't even think of?

He has never heard anything more absurd!

Li Bureau sighed: "just as you are here I was going to talk to you about it recently

With that, he opened the drawer and took out a CD stored in a special container.

Looking at the CD, academician Xue frowned. Before he could ask, director Li continued.

"The quantum encryption algorithm I said is in this Of course, it can only be put in my office now. It can't get out of the door next to you. But I can show it to you on my computer. "

Academician Xue wrote a trace of disapproval on his face and snorted coldly.

"I'm not so easy to fool."

Director Li said with a dry smile, "I know, but we are laymen after all. What we really need to refer to is the opinions of you experts So, I was going to let you see if this thing could block the attack of a quantum computer over 1000 qubits... "

Said, the disc has been put into the laptop.

With the sound of the CD-ROM drive running, director Li turned the computer around and faced academician Xue's direction.

With disbelief, academician Xue drank the cup of tea on the table, got up from the sofa, went to the side of director Li's desk, took a chair and sat down.Holding the mouse and clicking on the screen, after opening the file in the driver, academician Xue can see it line by line according to the algorithm file presented on the screen.

To be honest, in such a short period of time, it is impossible to develop a stronger and brand-new encryption algorithm based on the algorithm logic different from that of BB84 protocol.

Any research is carried out on the basis of the scholars engaged in this field, and the top domestic scholars he knows are all in his research group.

These people can't think of any good way. He doesn't think others can.

Unless "foreign aid" is invited.

However, the possibility of outsourcing encryption algorithms to foreign research teams is almost zero when it comes to national security issues.

Maintaining the expression of disapproval, academician Xue swept dozens of lines at a glance.

However, as the line of sight continued to downward, the mouse wheel continued to roll, his face expression, suddenly gradually appeared a little change.

This change is very weak, but in the eyes of director Li, it is so obvious.

Finally, the stubborn old man couldn't help it.

"This thing Who made it? "

"I really can't tell you that," director Li said with a dry cough when he heard the embarrassing question, "top secret content, please understand."

There was a long silence in the office.

Staring at the computer screen, academician Xue suddenly moved his eyes away from the screen, looked straight at director Li, and said in a slightly hoarse voice.

“…… Is it academician Lu? "

This is the only way

Director Li didn't speak and the expression on his face didn't change.

But sometimes, without expression, it's an answer.

With a wooden twist, academician Xue's face maintained an expression that had changed into a shock at some time, and his eyes looked at the rest of the algorithm dully.

As if he had seen something amazing, he murmured to himself in a dreamlike way.

"It was him No wonder. "

No wonder the project was cancelled.

With this encryption algorithm, it's really nothing for them.

Just think about it. It's a pity that they can't match him with more than 20 heads.

Think of here, that shocked expression, can't help but bring a trace of bitterness.

In the past, he didn't think much of the feelings of those old friends. Now he finally understands why it is frustrating to cooperate with Academician Lu.

This is not only a sense of frustration, or even people began to doubt life, feel despair.

In this way, it's not a kind of care not to tell them why the project is cancelled

Seeing that academician Xue didn't respond for a long time, director Li was a little anxious and urged.

"Don't just sigh What about this encryption algorithm? "

In a long time, academician Xue spewed out a word from his mouth before it was very strong

"What does strong mean?"

"That means, let alone 1000 qubits..."

After swallowing his saliva, academician Xue's voice trembled slightly. He sighed softly and said, "I'm afraid 2000 qubits is not a problem at all..."