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Trevanion Cipher

Tool to decrypt messages accoring to Trevanion. Trevanion cipher is a principle of steganography based on the position of the letters and punctuation in a text.

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Trevanion Cipher -

Tag(s) : Steganography

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Team dCode read all messages and answer them if you leave an email (not published). It is thanks to you that dCode has the best Trevanion Cipher tool. Thank you.

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Trevanion Cipher

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Trevanion Decoder



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Tool to decrypt messages accoring to Trevanion. Trevanion cipher is a principle of steganography based on the position of the letters and punctuation in a text.

Answers to Questions

How to encrypt using Trevanion method?

Encryption involves taking a text and be pay attention to position of the punctuation so that after each sign, counting a number of letters (eg 3 letters) we find a letter from the hidden message.

How to decrypt Trevanion cipher?

Decryption requires to know of the shift N used.

To find the plain text it is necessary to browse the text in search of the signs of punctuation. After each one, count a number of characters (N) to find a new letter of the plaintext.

Example: This website, I admit, is cool ! Prodigious tools, so dazzling things here. Great job !

Example: With N=3, The original plain text is DCODE.

How to recognize Trevanion ciphertext?

The message, if well done, is theoretically impossible to recognize.

How to decipher Trevanion without knowing the parameters?

dCode can attempt the most classic combinationshref, different shifts and modes.

What are the variants of the Trevanion cipher?

It is possible to set the trigger characters, eg. to use characters other than the classical punctuation.

The method for calculating the offset may be different for each person, some will count for all characters, others will treat only letters.

Example: `GO ! ATTACK !' has for 3rd letter A, for 3rd character _ (space) or ! (if space is ignored).

When Trevanion have been invented ?

17th centuryhref but the author is probably not John Trevanion. The name of this code was given in honor of John Trevanion, an English, a prisoner who received a letter from a friend using this principle. But historians have found inconsistencies in this story.

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Source code

dCode retains ownership of the source code of the script Trevanion Cipher. Except explicit open source licence (indicated Creative Commons / free), any algorithm, applet, snippet, software (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt, encrypt, decipher, cipher, decode, code, translate) written in any informatic langauge (PHP, Java, C#, Python, Javascript, etc.) which dCode owns rights can be transferred after sales quote. So if you need to download the Trevanion Cipher script for offline use, for you, your company or association, see you on contact page !

Questions / Comments


Team dCode read all messages and answer them if you leave an email (not published). It is thanks to you that dCode has the best Trevanion Cipher tool. Thank you.


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