Search for a tool
ADFGX Cipher

Tool to decrypt/encrypt ADFGX. ADFGX is a German encryption system, an old version of ADFGVX cipher, which uses a 5x5 square grid and a double mechanism of substitution then transposition.

Results

ADFGX Cipher -

Tag(s) : Substitution Cipher, Transposition Cipher

Share
Share
dCode and you

dCode is free and its tools are a valuable help in games, maths, geocaching, puzzles and problems to solve every day!
A suggestion ? a feedback ? a bug ? an idea ? Write to dCode!


Please, check our community Discord for help requests!


Thanks to your feedback and relevant comments, dCode has developped the best ADFGX Cipher tool, so feel free to write! Thank you !

ADFGX Cipher

Sponsored ads

ADVGX Decoder




Loading...
(if this message do not disappear, try to refresh this page)

Loading...
(if this message do not disappear, try to refresh this page)

Without knowing the permutation key

Without knowing the grid

See also: ADFGVX Cipher

ADVGX Encoder



Loading...
(if this message do not disappear, try to refresh this page)

Loading...
(if this message do not disappear, try to refresh this page)
See also: ADFGVX Cipher

Tool to decrypt/encrypt ADFGX. ADFGX is a German encryption system, an old version of ADFGVX cipher, which uses a 5x5 square grid and a double mechanism of substitution then transposition.

Answers to Questions

How to encrypt using ADFGX cipher

Encryption is identical to the ADFGVX cipher, but it only uses 5 letters: A, D, F, G and X and so only a 5x5 grid.

As there is only 25 possible letters in the grid, one letter of the latin alphabet has to be removed, usually J and I are combined, it can also be V and W.

Example: See ADFGVX.

How to decrypt ADFGX cipher

The decryption process is identical to the ADFGVX cipher.

How to recognize an ADFGX ciphertext?

The ciphertext should contains only 5 distinct characters: A, D, F, G and X.

(Optional) The ciphered message must have number of character divisible by the permutation length.

The name of the man who deciphered it war Painvin, a name that contains 2 French words: bread (pain) and wine (vin), any reference is a clue.

How to recognize a non-permuted text?

If the ciphertext has not be permuted, the text is a simple bigrammic substitution. After a replacement by a random alphabet, the text should have an index of coincidence similar to the one of the plaintext language.

How to decipher ADFGX without key for permutation?

To crack ADFGX without a key, there is no method other than the brute-force attack (test of all possible permutations).

How to decipher ADFGX without grid

The substitution grid can be found by performing an alphanumeric substitution of the bigrams resulting from the encrypted text after the permutations.

See the dCode tool for mono-alphabetic substitutions.

How to decipher ADFGX without key or grid?

The decoding of ADFGX without any information is complicated, but it is possible to find the permutation key first (see above) and then to perform a mono-alphabetical substitution.

Why the letters ADFGX?

The 5 letters A, D, F, G and X have been selected due to their Morse code equivalent. Indeed, their transcriptions are quite different, which avoids possible errors during radio transmissions.

What is the GEDEFU 18?

GEDEFU 18 stands for GEheimschrift DEr FUnker 18 which translates as radiotelegraphists 18 cipher is the old name of the ADFGX and ADFGVX ciphers.

Source code

dCode retains ownership of the online 'ADFGX Cipher' tool source code. Except explicit open source licence (indicated CC / Creative Commons / free), any algorithm, applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (PHP, Java, C#, Python, Javascript, Matlab, etc.) no data, script or API access will be for free, same for ADFGX Cipher download for offline use on PC, tablet, iPhone or Android !

Need Help ?

Please, check our community Discord for help requests!

Questions / Comments

Thanks to your feedback and relevant comments, dCode has developped the best ADFGX Cipher tool, so feel free to write! Thank you !


Source : https://www.dcode.fr/adfgx-cipher
© 2020 dCode — The ultimate 'toolkit' to solve every games / riddles / geocaching / CTF.
Feedback