Stay away from Conan.

"Yukar is not registered in Japan, and its main operations are all overseas. Its business model is mainly to let local residents do dangerous work, and then deliberately squeeze the wages of local people to reduce production costs. Therefore, the various resources they sell are very cheap, thus occupying a place in the international market."

In this way, Xiao Ai briefly explained the situation of Yukar Company to Gao Yuan, and then continued to analyze it to Gao Yuan:

"So, as the backer behind Yukar, the organization and Prince Yakov actually have the same goal! To squeeze as much benefit from the Panasugra as possible for themselves! Therefore, whether it is killing the opposing ministers or attacking the princess, it should be the work of the organization..."

So, after Xiao Ai finished speaking these words very seriously, she looked at Gao Yuan's reaction, but Gao Yuan only listened to these words thoughtfully, and responded simply:

"So that's how it is... It's because of Yukar Company..."

Seeing Gao Yuan's reaction, Xiao Ai became a little anxious and urged Gao Yuan:

"Do you understand what I mean? Originally, we just guessed that the organization was targeting the identity of the Panasukla delegation, but now it seems that the other party came here to assassinate the princess of that country. The organization will not give up until it achieves its goal!

"Also, the mention of the knot code this time also reminded me of a person. His code name in the organization is 'Arak', and he is also a professional killer who is responsible for dealing with some troublesome guys for Yukar Company.

“Although I have never seen this person, I have heard of his deeds. His main characteristic is that he uses knotted codes to communicate assassinations.

"So judging from the current results, the two ministers were probably assassinated by Arak, who was contacted by Prince Yakov! And right now, it is very likely that Arak is on this airship!"

So, Xiao Ai nervously told Gao Yuan more information.

However, after hearing these words, Gao Yuan's reaction was somewhat beyond Xiao Ai's expectations -

"An assassin from an organization famous for using knot codes? Are you... sure?"

It seemed a little unbelievable, Gao Yuan asked Xiao Ai this question back.

Seeing Gao Yuan's reaction, Xiao Ai was puzzled and asked:

"what?"

I don’t understand why Gao Yuan seems so relaxed about this organized killer named “Arak”.

So, Gao Yuan continued:

"Conan said that the knot was a code invented by the Greeks called the 'Aeneas Knot'. The distance between each knot represents a different letter, which requires a special decoding ruler to decipher.

"But as far as I know, this encryption method appeared in the fourth century AD, and in practical terms, it is not easy to tie knots on the rope accurately. If the interval between the points corresponding to each different letter of the decoding ruler is too short, then the knot must be tied accurately to ensure that there will be no misunderstanding.

“So, generally speaking, rather than ensuring the exact position of the knots, it is easier to ensure that the intervals between the points on the decoding ruler are sufficiently redundant to ensure that each knot is within a certain interval to determine the corresponding letter.

"But then there's another problem. The length of the decoding ruler will naturally increase, and similarly, the length of the rope will also increase. The problem this causes is that once the message that needs to be transmitted requires enough letters, the length of the rope will become longer and longer.

“From the perspective of cryptography, the ciphertext required by this encryption method is too long, but the actual decrypted plaintext is very short. From the perspective of information transmission, the information density of this encryption method is too low!

"If you really want to encrypt and transmit information, there are obviously better options. Why use this kind of knot? Is the organization's killer 'Arak' who is famous for this really a person living in the modern world? Is his technology so backward?"

Thus, after Gao Yuan recalled the relevant knowledge about the "Aeneas Knot", he became prejudiced against people who would choose to use this method to convey information -

After all, it’s really too backward!

Moreover, the other party is actually a member of the organization?

This was a bit surprising to Gao Yuan.

In this regard, listening to Gao Yuan's comments on the knot code of "Arak", Xiao Ai couldn't help but give Gao Yuan a helpless look -

Well, I ran into Gao Yuan’s gun…

Let alone classical ciphers, even modern encryption methods, as long as they are not algorithmically unsolvable problems, Gao Yuan seems to have no difficulty with them. Therefore, facing the current situation, Xiao Ai also inexplicably felt a sense of security. She folded her hands in front of her, calmed down and said to Gao Yuan:

"Yes, yes... it's too backward... but now there is no decoding ruler, can you decipher the code?"

"Why not?"

In this case, Gao Yuan couldn't help but ask Xiao Ai a question, which surprised Xiao Ai a little -

"Encryption methods with low information density are actually very easy to crack.

“Just exhaust the list!

"Since the Aeneas knot represents the corresponding letters by the different lengths of each interval between the knots, and the official language of Panasukhara is English...

"In short, it's just about selecting a few letter combinations from the twenty-six letters. Find the reasonable combination, and then determine the correct combination. As long as you do it two or three times, it won't be a problem to reverse the decoding scale.

"Isn't it easy to interpret this with modern computers?"

Just like that, after Gao Yuan finished speaking, Xiao Ai couldn't help but sigh inwardly -

You are indeed a professional...

"Really? That's a pity... The servant assigned to the prince found the knots that tied the two ministers before and after they were killed. Even if they are untied, I'm afraid they won't be able to help this time. In the final analysis, we still have to find the decoder to determine who the killer is..."

In this case, Xiao Ai couldn't help but explain the current situation lightly, indicating that Gao Yuan's previous show-off seemed to be of no use at all.

"Decoding ruler? I'm afraid there's no such thing."

Shaking his head, Gao Yuan directly refuted:

"Perhaps the assassin's Prince Yakov might have some experience, but if the assassin is famous for his knot code, he probably doesn't need a decoding ruler to decipher the knot code.

"The killer should be able to tell which letter corresponds to which interval with just one glance. So, if Conan wants to find a decoding ruler, he probably won't be able to find it..."

"Hey? Then why didn't you stop Conan just now?"

Hearing this, Xiao Ai couldn't help but ask in confusion.

"Because I didn't have a better idea just now..."

Gao Yuan said helplessly:

"And, speaking of which...if the other party is a member of the organization..."

As he said this, Gao Yuan couldn't help but look at Xiao Ai seriously... (End of this chapter)