The essence of a cipher letter is just to modify and replace the information to achieve the purpose of making it unrecognizable to others.
Something as simple as a more popular acrostic poem;
To increase the difficulty, there is also Caesar cipher;
Further up is the code book used by the telegraph machine;
And the pinnacle, the computer that symbolizes the pinnacle of human technological creation, is the computer protocol used.
These things can all be covered by the essence of cryptographic letters.
Let’s talk about what they have in common.
--law.
To be precise, it is to use rules set in advance to find out what the expresser really wants to express.
The prefixes in the acrostic poem, the sequence change of Caesar's cipher, the Morse code of the telegraph machine, the algorithm protocol of the computer.
In any case, these passwords follow a certain pattern of their own.
Or a codebook that can correctly decipher the true content.
So this coded letter in my hand...
What is its codebook?
Thinking of this, Ronald turned his eyes to the "Burrenwich Almanac - 37" on the bookshelf nearby. The thick book was sandwiched between the surrounding books, lying quietly on the bookshelf.
Just like Ronald did when he cracked the password.
There is no difference at all.
When he first cracked the coded letter, Ronald only used the yearbook as a reference book and put it back into its original place after use.
but now......
The situation may be somewhat different.
With this in mind, Ronald stood up and walked to the bookshelf to take down the yearbook.
Turning with his fingertips, he quickly turned to page 687 again.
This time, unlike the precise search last time, Ronald read the contents of the yearbook carefully.
However, the result was a pity.
——Still nothing gained.
On page 687 of this yearbook, the main content of the record is concise and clear.
Basically, at the end of the winter of the previous year, some trivial matters in the city of Burrenwich, such as the famous robber scheduled to be publicly hanged in February next year, the maintenance work on the Joize Forest Railway was smoothly carried out, and the opening of the New Era Theater in the city...
....
Ronald read it line by line.
There really wasn't anything worthy of his attention.
A city's almanac only covers so many things.
Either the birth and death records of famous people, or some superficial specific events.
There is really no one who can stand up to this mysterious force.
oh......
correct!
There is a familiar word on it.
Regarding the preparations for the execution of the hanging, the execution order was also announced by the warden, among whom Ronald remembered the name of Bach Klitchens well.
But this.
It also has nothing to do with mysterious forces.
After all, it couldn't be the warden himself who revealed the news to Ronald, as he was a traitor, right?
This is completely impossible, both logically and emotionally.
"..."
"Isn't that what this page is about?"
I stood in front of the bookshelf and thought for a few seconds.
Ronald confirmed that he had memorized the general content of this page, and then turned the yearbook to the cover and title page and looked at it carefully.
Since there is no information on this page of the coded letter, let's focus on the entire yearbook.
So after flipping through it, Ronald finally remembered a name.
——Elva Sherwood.
This is the editor-in-chief of the yearbook in the hands of Ronald.
Because there was a character introduction on the title page, he was sure that Mr. Elva Sherwood was not young this year and was also a highly respected scholar in the country of Greed.
As the author of the yearbook, he is currently the most suspect.
If you want to investigate.
This guy is the right place to start.
Silently jotting down the information, Ronald flipped through the book in his hand again.
After confirming that he had no omissions of information, he put the yearbook back on the bookshelf.
In this era, everyone who has some money wants to pretend to be educated.
Therefore, decorating the bookshelf has become a necessary interior decoration, and to supplement your own personal bookshelf, this kind of city almanac with thick pages and exquisite binding is basically indispensable.
Even if Ronald is not at home afterwards.
If you want to find this book, you can definitely find it.
So he wasn't going to rip page 687 out of the book.
——If possible, Ronald doesn't like destroying books.
Slowly returning to the desk, Ronald still put the password letter in the notepad and put it back under the corner of the desk.
Immediately, he stretched himself comfortably:
"ha--"
That’s it for today’s brain activity!
In the afternoon, Ronald asked whether the coded letter Nicole had received was successfully cracked by using a text and picture album as a codebook comparison.
We can discuss it with the investigator girl next time.
After all, he just left the other party's mansion today, so it was really not suitable to visit him again right away.
With this thought in mind, Ronald pushed open the door and walked downstairs.
Although Nicole was quite happy with the big meal at noon, it still inevitably left a shadow in his heart.
Let's take this opportunity to learn how to cook with Ms. Hudson...
————
Time flies by quickly, and a new weekend meets the winter in Burrenwich in the blink of an eye.
Early on Saturday morning, the eastern sky showed a hint of brightness.
Ronald then took a taxi and drove out of the city.
To be honest, Ronald is a little distracted right now.
Although he had important work for the exhibition today, his mind was now occupied with the issue of code letters.
Because just last night, he found an opportunity to discuss it with Nicole again.
The result of the discussion was that Ronald knew:
The text-picture book that Nicole cracked the coded letter a year ago was actually the publication that Elva was the editor-in-chief of!
At this point, things are already obvious.
Even if Elva is not a member of this mysterious force, he is definitely an important part of the invitation.
The reference points for deciphering the code letters of the two people all point to each other.
The target can be locked almost flawlessly.
I want to continue investigating next, and there is no doubt that I should visit this scholar.
——It’s a pity that the opportunity is not right now.
Because this scholar named Elva has now moved to the capital Springs.
As for finding Elva in the capital...
Just think about it first.
Faced with this situation, even Nicole expressed that she would go to Mr. Yakin to confirm again and ask the investigator about the details of the coded letter back then.
At this point, the priority of this matter is moved back one place.
Their activities in Berenwich are currently focused on the warden's 'betrayal' and 'Lumiel' who came down from the Black Mountain.
Sitting in the carriage with your back against the wall of the carriage.
Ronald's gaze also followed the road and saw the suburban manor.
The exhibition venue today is no different from the two previous visits.
I hope I can work these two days.
It can be as smooth sailing as before...
With this thought in his mind, Ronald's right hand suddenly shook.
In fact, there is nothing else.
It was in "The Divine Comedy - Inferno" that the power of 'deception' was activated——