Although Jiayi was happy that his friend was his loyal reader, he was afraid that she would always urge him.

How can you bear it if you have something to do if you have something to do?

Jia Yi thought about it and said, "Selina, since you like to watch "The Lord of the Rings" so much, why not organize the Lord of the Rings and publish them."

"publishing?"

"Yes, "The Lord of the Rings" is serialized in newspapers after all, and there must be many people who have not seen it or read it all. It is better to assemble and compile it and publish a book. You don't have to read it for the second time. It's so convenient to have a book."

Jia thought that as long as Selena had something to do, she wouldn't bother herself.

It is now very convenient to publish books, and Valoca has a publishing business, which is even more convenient.

There are several types of printing machines now, in addition to magic printing, there are also movable type printing, and improved magic woodblock printing.

Among them, movable type printing costs are the lowest, and Jiayi also invented paper type. After each layout, you can use special wet paper to cover the movable type after type, and then dry it and print the layout after type, which is the paper type.

When you need to use it, pour the lead-tin alloy into the paper shape, and the mold is the layout after the layout is directly used for printing. This method can use fewer letters. After making the paper shape, the original layout can be broken down and reused. Moreover, the paper shape is left after each layout, which is convenient for reusing it later. Just pour the lead juice into it.

The paper shape is very light and easy to store and transport. You can even make the paper shape and then transport it to another place for printing, which can ensure the uniform printing styles in different places.

Paper type is made of special paper. Generally, the ignition point of paper is around 2,300 degrees, and the temperature after the lead-tin alloy is about 4,500 degrees. The paper made after special treatment can withstand this temperature, so there is no need to worry that the paper type will be ignited if the lead water is poured.

The college already had the idea of ​​using paper to start a newspaper branch. The newspaper was typed in the college and made into paper type, and then transported to the branch for printing and then published.

In this way, there is no need to transport a large number of newspapers, which is more convenient to transport. For newspapers, the cost of long-distance transportation is now higher than the printing cost.

It is said that during the Republic of China, when writers such as Lu Xun and others fled, they carried paper shapes with them and went to other places to find ways to print.

The magic carving is the printing technology developed by Yancimado and others. They first arrange the shift on paper, or copy the movable type layout, and then use magic to automatically carve the corresponding wooden or metal printing boards.

The prints produced in this process are of better quality, with clearer handwriting, and can also print pictures. However, the cost of using magic to make engravings is relatively high, and the requirements for equipment are also higher, which is not as simple as paper.

This method is a relatively advanced printing method. Only some popular hardcover books will be printed using this method, or books with rich illustrations. However, most of the books printed with this printing method are relatively expensive.

Generally speaking, book printing is used in combination with paper type movable type and magic engraving plates. It can not only print pictures, but also reduce costs. The paper type is also easier to store and transport, and is also convenient to use. In addition to the printing machine, magic engraving plates also need to be equipped with a magic engraving machine, which is very expensive.

Finally, there is old-fashioned magic printing. This kind of printing is the most expensive, the best quality is printed, and it can also print fine patterns. However, except for some special books, few people use this method to print books.

Most of the people who are still using this method are copy of notes and notes related to magic, striving to restore the most authentic original appearance.

And this kind of book is probably only available to the wizards.

Even inside Valoca, color printing technology such as overprinting has begun to appear, but the cost is higher and the speed is too slow, so it has not been launched.

After sending Selena to publish books, Jiayi had a few days to spare.

Then he received a letter from Yanel. Selena had already gone to the college and took back the draft of Jiayi preserved by the college newspaper. This was also a very unusual relationship between the two sides, otherwise ordinary people would never be able to get it.

The novel written by Jiayi did not leave any manuscripts that had been proofreaded. The manuscripts after rough proofreading were directly given to the newspaper for proofreading and publishing. If Selena directly received the manuscripts from Jiayi, she would have to spend time proofreading them again. The manuscripts obtained from the newspaper were proofreading, and they only needed to re-type them, saving a lot of time.

There were no electronic documents at this time, and it was not convenient to copy the manuscript. Although there was magic, most of the time it required people to copy it manually. In order to be lazy, Jiayi left nothing but a copy of the manuscript, and even handed over the last few issues directly.

Selena received the manuscript and brought back the letter from Yanel to Jiayi.

The letter did not say much, mainly to explain Selena's coming to take away the manuscript, but looking at the magician's secret key on the surface of the envelope, Jiayi was a little confused.

The mage secret key is a means of confidentiality. Before sending the envelope, the mage uses a secret key that only two mages know to encrypt it on the envelope. Then the envelope can only be opened with the correct secret key. If violent means are used, it will not only easily damage the letter, but also leave traces and cannot restore the letter.

Many times, the means of exchanging communication between two mages is to exchange secret keys. Before sending the letter, the mage uses the secret key left by the other party to encrypt the letter, so only the mage with the corresponding secret key can open it.

However, this method is not foolproof. The encryption method on the envelope is symmetrical, that is, the encryption method and the decryption method are consistent. If someone can crack the encryption key of a certain mage, then he can use the same method to encrypt the letter after peeping at the letter without leaving any trace.

Generally speaking, it is of course difficult to crack a mage's secret key, but if everyone's magic level is very different, it is not impossible to crack it.

Especially if the mages want to use secret key communication, they need to exchange secret keys, which makes the secret keys unable to be secure. Even if the key cannot be cracked, the keys can be obtained through roundabout means.

Many times, a mage has to design several sets of secret keys and give them to different mages according to the level of confidentiality. For those who are not very familiar with it, use secret keys with a lower secret level.

Of course, if you are not annoyed, you can provide each friend with a separate secret key, but it is not guaranteed whether you can find the corresponding secret key to decrypt it when you come to the letter.

Jiayi looked at the mage secret key on the envelope and suddenly thought of the commonly used encryption methods on the Internet. In the long-term war of espionage and counter-espionage, encryption and decryption, the encryption methods in the Internet protocol have become very rich. Not to mention that they cannot be cracked, but the difficulty of cracking is no longer something that ordinary people can imagine.

Among these encryption protocols, the most commonly used algorithmic idea is asymmetric encryption.

The so-called asymmetric encryption is to generate a pair of secret keys at one time, one of which is saved by itself, called a private key, and the other is public, called a public key. If someone wants to transmit information to the other party, he will use the other party's public key to encrypt it, and then the person who receives it uses his private key to decrypt it.

Because the private key will only be saved by itself and will not be sent out, this encryption method is much more secure and does not have to be responsible for the security of the public key exposed to the outside. This greatly enhances the security and convenience of exchanging the key, and can also share the public key with third parties like sharing a business card, and you don’t have to worry about being unsafe.

This kind of encryption algorithm does not require high magical strength, but it requires much higher mathematics and calculations, which just fits Jiayi's current level. Jiayi has now become a white-robed mage and has landed on acceleration runes. It is the time when computing power has increased greatly, and it is just for a small test.
Chapter completed!