The second-generation communication instrument must first enter the magic mark before use, which is prepared for the [Twin Marks], which is equivalent to a preset public encryption algorithm.
When two communication instruments are close to each other, the [Twin Marks] can be activated. Two different users pre-store encryption algorithms, which will form a brand new encryption algorithm and be stored on the two communication instruments.
Every subsequent communication is encrypted using this encryption algorithm.
Of course, the communication magic mark is a mark that can be disclosed to the outside world, and it is not difficult to obtain the marks of two people at the same time.
The key to this encryption method lies in the characteristic values assigned to the new algorithm when two people activate the [Twin Marks] at the same time.
At this point, both parties do not know the characteristic value assigned by the other party to the new algorithm. When decrypting, their respective communication instruments are decrypted with the characteristic value assigned by their respective users.
Even if you use the name of the communication target as the characteristic value for the convenience of memory, it will be fine as long as you don't say it out loud.
And if you are sending a message to someone who does not have a second-generation communication device, it is encrypted with a public communication magic mark, which is already very popular in Netheril.
Of course, due to the particularity of [Magic Network Background Communication] (it disappears as soon as it is received, there is no possibility of interception in the middle), the traditional encryption method may be a little acclimatized. In fact, as long as it is accurately locked, it is difficult to be intercepted by others. This mainly depends on the level of the caster.
But relatively speaking, only a more precise encryption method is a more precise locking method.
Otherwise, the magic network background communication is more like a full-frequency broadcast communication spell when sent, and the risk of being intercepted is still very high.
…
In the corner of the workshop, after Sha Duo and Ganal activated the twin marks, a small rune with a shimmering light immediately appeared in the communication instrument.
This is a visual projection formed by using the properties of the communication instrument's packaging material. If it is encapsulated with other materials, the projection will be gone, but the twin marks will still exist inside the instrument.
It's just that when using it, you need to distinguish and search for it through the changes in the strings of the magic network, which is not as convenient as the current runes.
In fact, this kind of rune can also be regarded as a note when saving a number on a mobile phone on Earth, but the second-generation communication device is not powerful enough to allow users to customize notes, and they are all automatically generated internally.
Of course, even if someone can completely crack the second-generation communication device, it is impossible to reversely deduce the communication target information only through the tiny runes projected from the crystal ball of the communication device.
The process of generating runes is similar to the process of data dimensionality reduction. Only part of the data is cut off to form a projection. In fact, a large amount of information is lost, which is not enough to reverse the communication target information.
Xia Duo did not examine this small rune carefully. The rune itself had no practical meaning, and it only had meaning because it referred to a certain communication target.
"Ganal, you send me a message and say whatever you want."
"Yes, President."
Ganal held the crystal ball and said casually, "President, I am sending you a message. Do you receive it?"
"..."
Xia Duo suddenly discovered that it was a little awkward for two people to use communication instruments face to face. Of course, if they cooperated with traditional communication spells, silent communication could be achieved.
However, Shado did not blame Ganal, but picked up the communication weapon, and saw that the only small rune in the crystal ball was flashing at the moment.
About once every two seconds, it means there is a new message; if it happens once a second, there are at least three messages; if the frequency is higher, there will naturally be more messages.
Specifically, Xia Duo has not tested it in detail.
In fact, the mass production plan he came up with was a bit risky. It only passed a simple feasibility test and was done by himself. He was not sure whether there were bugs.
Xia Duo "clicked" on the flashing runes, and the communication device transmitted the pre-received voice information to his ears in the form of traditional communication spells, rather than directly releasing it to the public.
"Ganar, this way, you go outside and send me the messages one by one. Use your fastest speed and don't be afraid of damaging the communication device. This is originally consumed by the test."
After Sha Duo finished speaking, Ganal was stunned for a moment. He didn't expect it to be such a test, but he did not express any doubt and quickly went out with the communication weapon.
Immediately afterwards, the runes in Xia Duo's communication instrument began to flash again, and the frequency became higher and higher. Seeing this scene, Xia Duo couldn't help but breathed a sigh of relief.
It seems that at least there is no problem with the pre-reception function in the communication management function of the second-generation communication instrument.
In this situation, if he was still using a first-generation communication device, his mind would probably be filled with Ganal's counting.
This is still the case where only one person is sending the message. If there were more people, dozens or hundreds of people, then his head would probably explode.
However, even if the message transmitted by the background communication of this magic network is temporarily blocked, it will not disappear, but will always exist in the background fluctuations of the magic network.
As long as you are negligent and locked by the communication, all the information accumulated before will come out.
It can be seen from this that the importance of pre-receiving communication instruments. Of course, the second-generation communication instruments are just starting out after all, and cannot temporarily store too much information. If there are too many, the previous ones will disappear, leaving only the latest reception. of.
"Ganaar, stop for a moment." Sha Duo called.
After that, he checked all the information one by one. Sure enough, the numbers starting from 1 had reached more than 30. It may be that the information content was small, and even the 1 had not disappeared.
After all, it is a communication device that can transmit and temporarily store image information. Storing some sound is not a problem.
Then, Xia Duo asked Taling to get a first-generation communication device for Ganal, and then sent a message and said: "Next, use the first-generation communication magic weapon, just like just now, start from 1 and send the message one by one, as fast as you can. "
Strictly speaking, people should use spells to communicate, but that would be too wasteful of manpower. The first-generation communication device is almost the same as people casting spells.
Xia Duo waited for a while, but the runes in the communication device in his hand did not flicker. Only then did he realize that the overly precise locking method of the second-generation communication device had changed the communication between the two parties from "person-to-person" to "person-to-person". It's "communication instrument vs. communication instrument".
fo
At the same time, this communication weapon is also a loophole for itself to avoid detection!
"Well, maybe we can use communication management spells to deal with it."
Xia Duo quickly made up his mind. In fact, he didn't have that much time to change it. It was more important to make money and build the floating city first. Bug fixing and other things could only be done during the next "new machine release". .
Anyway, this is not a fatal flaw. Because of the special nature of the background communication of the Magic Network, it is almost impossible to use this loophole to locate the person who has applied evasion detection. The only way is to determine the existence of the target.
After adjusting his mentality, Xia Duo slightly adjusted the evasion level of the evasion detection spell. Then he received a large amount of information. The runes in the communication weapon in his hand could flash several times a second!
Without the second-generation communication device, he would have been bombarded with information right now.
It seems that Ganal is working hard outside!
Shado thought this, and then summoned Ganal to let him in.
