Jing Yu naturally put forward a lot of requirements for these two machines. The easiest thing is to use the coding rules of the displacement method to make the punched cards made by one machine be restored only on another machine with the same coding rules.

As for the encoding rules, it is implemented through six digital discs. In this way, each disc has a total of 10 numbers 0-9. The six combined together have a total of 9999999 encryption methods. Each encryption method corresponds to a set of encrypted displacement rules.

For example, if the hole punch record with the letter "a" is not the encoding rule of the corresponding number on another machine, it is likely to be "c" or another character, and only the machine with the same encoding rule will display "a".

Of course, this encryption method is not a simple fixed displacement, but after calculating through a series of complex gears, even a letter is not the same punch record at different times. This can avoid others from calculating it using simple statistical methods. For example, the most common letter "e" in English, even if it appears repeatedly, the combination of punching each time is different.

Moreover, not only that, Jing Yu also asked Todd to consider the phrase. For example, the word "the" appears very often in English. If the three letters "t", "h" and "e" change each time, the combination rules are the same, and it is easy to be cracked.

These are some cryptography knowledge that Jing Yu learned from his own world. He didn't know if anyone had discovered this in this world, but he still took it out, hoping that Todd Scott could fulfill his requirements. Jing Yu felt that this machine would be too wasteful if it was just used for automatic re-typing, and as a mechanical crypto machine, it was another idea that came to his mind.

However, Jing Yu did not put all the improvement opinions on encryption. In addition, Jing Yu made a series of explanations on the operation methods of the machine, the standards for drilling paper tapes, etc.

According to his idea, there is a disc reel similar to an old movie projector on this machine. A blank punched hole is carried through the middle of the machine and then connected to a disc reel. This way, when the typewriter works, the content can be recorded on the paper tape. Because it is in a winding form, it is naturally not necessary to record one by one like using a punched card, but can be recorded continuously.

Even if you use it, you can also use a new paper tape to continue recording. After the recording is completed, you can use the unused paper tape next time. The recorded paper tape can be cut and saved.

He said his thoughts carefully and seriously, and finally he said to Todd: "Mr. Scott, this kind of machine can be divided into two series, one in a fixed encoding format, and the other in an encrypted manner. I believe the government is definitely more interested in the latter, but we must ensure the security of encryption."

Todd Scott kept recording what Jing Yu said. He no longer had any doubts about Jing Yu's imaginative but very reasonable ideas. As long as it was said by Mr. Jing, it would definitely be able to be created. If it could not be created, it would mean that he was not at the same level and needed to find more people to help create it together.

Fortunately, Herbert factory manufactures high-tech products such as differential machines. Todd mentioned that using gears for encryption and coding rules of Jing Yu mentioned are relatively easy to understand. In fact, it is a mechanical mathematical operation mechanism similar to differential machines. The principle is similar to that of differential machines.

Jing Yu also promised him that he would sort out the knowledge about encryption for him. In fact, it was not considered as Jing Yu's compilation. Instead, there were several books on passwords, encryption, and cracking content in his Kindle, such as "Password Story", "Illustrated Password Technology", and "The Secret of Password Technology". At that time, just copy some of the content from it.

After explaining to Todd Scott and answering his question, the two of them should have said goodbye.

However, Jing Yu found that Alice Herbert seemed to be talking less than usual this time. You should know that although she is responsible for the overall management of Herbert's factory on weekdays, she is not completely a layman in technology and often participates in the discussion between Todd Scott and Jing Yu. However, this time Jing Yu felt that she seemed a little unconscious and almost never spoke much.

So he asked with concern. Alice Herbert came to his senses and said that he had nothing to do. Jing Yu looked at her flushed face and was worried about her.

Alice Herbert said goodbye to Todd Scott, but they did not take away the two prototypes, but stayed for Jing Yu to try it out.

After they left, Scarlett Saimen looked up and down with strange eyes.

"Mr. Jing, do you still know how to design mechanically?" she asked curiously.

"I don't know how to do it," Jing Yu directly denied that he knew nothing about mechanical design and there was no need to brag about himself in a pretentious manner.

"But they said that this was designed by you?" she continued, "I didn't expect that in addition to writing books, you can also design such a powerful machine." Although she was not particularly interested in this machine she had never seen before, she could still see that it seemed very powerful.

"I just told them what kind of machine to do. As for how to do it, I can't make it." Jing Yu explained patiently.

Scarlett. Saimen wanted to say something, Jing Yu stopped her, "Okay, Miss Saimen, you have seen Alice, and I still have to work hard now. You go find Miss Stanford."

When she heard that Jing Yu was about to let herself leave, Scarlett Saimen knew that Jing Yu had her own affairs and that she was not a person who didn't know how to advance and retreat, so she said goodbye to Jing Yu and asked the maid to push her away.

Jing Yu looked at the machine in front of him and felt that he was deviating from his original plan. He was originally thinking about opening a factory by himself to help the workers in the lower class of this world, especially after he confirmed that the world did not have his own homeland, he no longer thought about returning.

However, I encountered Ralph Stamford's incident, which made me completely unable to implement the plan. As a result, I have invested more and more energy in the Herbert factory.

At the same time, Alice Herbert was considering how to let Jing Yu know her feelings. She thought that she could not tell Mr. Jing directly. Could it be that he should take the initiative to pursue and reluctantly agree?

But she soon thought, perhaps, after creating the machine he mentioned, using the machine to print an encrypted letter is also a way?
Chapter completed!