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Cardan Grille

Tool to decrypt/encrypt with a cardan grille. The Cardan grille is a mask superimposed to the text that bring up some letters to make a message.

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Cardan Grille -

Tag(s) : Cryptography, Substitution Cipher

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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 Cardan Grille tool. Thank you.

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Cardan Grille

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Tool to decrypt/encrypt with a cardan grille. The Cardan grille is a mask superimposed to the text that bring up some letters to make a message.

Answers to Questions

How to encrypt using Cardan Grille cipher?

Encryption uses another text (understandable or not) of which only a few letters are from the original text.

In practice, Cardan uses a mask, a grille in which some cells are opaque, others empty.

To code DCODE with the mask XXXXXX_XXXXXX_XXX_X_XXXXX_XXXX where X is an opaque cell and _ an empty one.

You superimpose the mask cover, write the text in the empty boxes, removed this cover and fill the rest with random lettershref.

Write DCODE in empty cells XXXXXXDXXXXXXCXXXOXDXXXXXEXXXX and complete with letters, for example OZPCESDVIDGABCNTEOHDERXJXEMLUE.

How to decrypt Cardan Grille cipher?

Decryption requires knowledge of the grille. The decrypted text appears simply by placing the cover on the text.

XXXXXX_XXXXXX_XXX_X_XXXXX_XXXX
OZPCESDVIDGABCNTEOHDERXJXEMLUE
XXXXXXDXXXXXXCXXXOXDXXXXXEXXXX

How to recognize Cardan Grille ciphertext?

The ciphered message is very long compared to original plain text.

How to decipher Cardan Grille without the grille?

The decryption without grille is very difficult, one should try all the grids.

Using a probable word, it is possible to estimate the coverage mask and know the amount of letters to ignore.

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Source code

dCode retains ownership of the source code of the script Cardan Grille. 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 Cardan Grille script for offline use, for you, your company or association, see you on contact page !

Questions / Comments


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