Chapter 1180

After coming out of Jinling Institute of higher learning, director Li did not stop at Jinling, but rushed back to Beijing overnight.

In two days, he visited the top leaders of quantum computing in the major semiconductor research institutes in Shangjing and asked them about the security of quantum computing technology.

Director's office of Microelectronics Research Center.

After listening to Director Li's explanation of his intention and expressing his concerns about the security of quantum computer technology, director Wu Jiancheng, who is over 70 years old, smiled and rejected his idea without hesitation.

"Your worry is superfluous. In theory, quantum computers will indeed threaten the security of asymmetric encryption algorithms, but this technology will not be broken in a short time."

"At present, even the most advanced quantum computer can only reach more than 20 qubits. Google's d-wave is unique in this respect, and has achieved 80. But in fact, it has a lot of water. Instead of using the quantum gate circuit to control the qubit, it uses the quantum annealing algorithm to take a shortcut. Traditional supercomputing with the same algorithm can even do better than it. There is a lot of controversy in academia and industry. "

"Whether it's a real quantum computer with more than 20 qubits or a pseudo quantum computer with more than 80 qubits, it's a little difficult to crack the modern encryption technology. Taking the most common RSA encryption algorithm as an example, taking the difficulty of the widely used prime factorization problem at present, there is no problem in dealing with quantum computers with less than 200 qubits. "

"Director Li said cautiously:" this does not have any question at all

Director Wu Jiancheng continued: "the cracking cycle is more than one year, which means that even a two hundred quantum bit quantum computer will take more than one year to crack your bank card password. During this period, as long as the key changes, everything has to start again. "

In theory, any encryption rule is not a public key used dead. When either side of the pass evaluates that there may be a security risk, they will apply to replace the public key.

Looking at director Li, who still refused to let go, he sighed and continued in a relieved tone.

"The development of technology is a smooth process. When we master the real quantum computer, we will naturally develop the corresponding encryption algorithm. This thing really doesn't need to worry too much!"

"But if," director Li continued, trying to make up a reason, "if it happens Similar to the situation of technology explosion, we or our enemies suddenly master quantum computer technology - "it is impossible for us to have such a situation," interrupted director Li. Director Wu Jiancheng said without hesitation, "the so-called technology explosion is just a layman's statement! There is a linear progressive process in the time scale from discovery to development of any new technology. Especially in the 21st century, scientific research has changed from single combat to team work. "

"If you think quantum computer technology can break through tomorrow, you can definitely find earlier papers on solving the problems of" decoherence "and" noise processing "! I can call the latest data of the database for you now. I can tell you for sure that there is no good solution to the problems I mentioned so far! "

Looking at the determined expression on director Wu's face, director Li's expression was slightly awkward.

He would like to tell him the truth, but it's a bit of a big deal. All the people who know the situation are told to keep it secret by him repeatedly. He can't break this case by himself.

“…… Isn't that a hypothesis? You can't guarantee that others will find out if it's hidden. "

Seeing that director Li is still "opinionated" and superstitious about this kind of fantasy, director Wu Jiancheng is also too lazy to argue with him, reluctantly nodded his head and said.

"If that's what you said, a quantum computer came out of the stone."

"Maybe it can really threaten our information security."

Hearing this, a stone in director Li's heart finally fell down, but another heavier stone was put up again.

Sure enough, his worry is not unreasonable!

Fortunately, he found it in time, and there is still a chance to remedy everything

After today's visit, director Li went straight back to his office.

It took a whole day to write the report, and then he came to Chang'an Street with the report.

When he stood in the familiar office, he saw the old man behind the mahogany table, wearing glasses, staring at the letter paper in his hand.

I don't know if it's his illusion. I always think this letter is familiar.

However, he didn't think much about it. He reached out and tapped on the open door.

Looking at director Li at the door, the old man smiled a little and lowered the letter a few inches, saying softly.

"Here you are?"

"Well There is one thing I have to report to you. "Director Li nodded, walked forward and said seriously, "I went to Jinling two days ago, and our academician Lu brought us a surprise."

"Since it's a surprise, why do you look so serious?"

Hearing director Li's words, the old man smiled and raised his hand to signal him to stop first and deliver the letter in his hand.

"Take this letter first."

After a little hesitation, director Li took the letter from the old man.

After sweeping his eyes, he was stunned, then a helpless smile appeared on his face, and returned the letter to the smiling old man.

“…… It seems that Professor Lu has considered it well. "

"Yes," said the old man with a smile and a nod, "it's a great honor for the Republic to have a scholar like academician Lu."

Pausing for a moment, he put his smile back and went on with a business face.

"Tell me what you think of the letter."

Director Li thought for a long time and said.

"My suggestion is to keep it secret for the time being."

The expression on the old man's face did not change, just asked.

"Why?"

"Although quantum computer technology has broken through, as Professor Lu warned us in his letter, our society does not have a set of encryption algorithms that can deal with this means of decryption."

Speaking of this, director Li paused for a moment and took a quick look at the expression on the old man's face.

Seeing the old man nodding, he let go and continued.

“…… I suggest that the Chinese Academy of Sciences should let out a little wind first, so that all sectors of the society have a preparation for this advanced research. After all, if it's Professor Lu... "

Speaking of this, chief Li made a helpless smile on his face.

"I'm afraid it will really cause panic."

The old man nodded his head thoughtfully, which was a recognition.

If it's a long-term process, it's better to say.

From the birth to maturity of a technology, society may have been imperceptibly adapted to the changes brought about by it.

But if it is announced suddenly, quantum computer technology has achieved a breakthrough of 500 or even more than 1000 bits from below 100 bits, which is undoubtedly equivalent to declaring the original encryption rules directly invalid.

The impact on finance, and even all industries that rely on information security, is nothing more than an atomic bomb directly thrown overhead. The whole society has to adapt to this drastic change in a drastic way.

If someone else is behind the scenes, it's hard to believe that crazy things like "take all the money out of the bank" and "terminate all online transactions" will happen.

Considering Professor Lu's influence

There is almost no doubt that these things will happen.

After all, for the scholar who does what he says and never exaggerates, almost most people will not doubt that the news coming out of his mouth may be false.

After pondering for a long time, the old man opened his mouth and said, "it can't be under pressure all the time. We have to consider academician Lu's feelings. What's more, the risks brought by new technology must be considered, but it's against the historical trend to prevent the birth of new technology, which is even worse. "

"I think so, too," director Li nodded. "So my suggestion is, on the one hand, let the Chinese Academy of Sciences put some noise out first, and use a less sensitive but not small research team to artificially create the heat in this field. Together with other propaganda machines, we will build quantum computers into the next technological outlet. "

The old man: "on the other hand?"

Director Li: "on the other hand, it's just like what academician Lu proposed! We must master a kind of encryption algorithm that even quantum computers can't crack! Once we master this algorithm, all the possible risks of quantum computing will be transformed into our advantages in this round of information technology revolution! "

Clapped a thigh, the old man said approvingly.

"That's good! Then you think Who is better to give this task to? "

Looking at the old man's bright eyes, director Li made a helpless expression in his heart.

It can be seen from the eyes that the old man actually has the right person in mind, but he intends to put it forward.

“…… Information encryption is the specialty of mathematicians, and academician Lu is the top mathematician in our country. Besides, the quantum computer was also made by him. No one knows the sharpness of this spear better than him. Even if it's psychological, the "shield" built by him will be more secure than others

"I propose that Professor Lu be in charge."

When he heard the answer that met his expectation, the old man's face smiled approvingly.

"It's a good proposal. I will write a reply to academician Lu personally and appoint him to complete this arduous and glorious task!""As for the others, do as you say."

Feeling the heavy pressure on his shoulder, director Li nodded heavily.

"Yes!"