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) : Cryptography, Substitution Cipher, Transposition Cipher

dCode and you

dCode is free and its tools are a valuable help in games, puzzles and problems to solve every day!
You have a problem, an idea for a project, a specific need and dCode can not (yet) help you? You need custom development? Contact-me!


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 ADFGX Cipher tool. Thank you.

ADFGX Cipher

Sponsored ads

ADVGX Decoder





Cryptanalysis Tools




ADVGX Encoder




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.

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.

Ask a new question

Source code

dCode retains ownership of the source code of the script ADFGX Cipher online. 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 online ADFGX 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 ADFGX Cipher tool. Thank you.


Source : https://www.dcode.fr/adfgx-cipher
© 2017 dCode — The ultimate 'toolkit' to solve every games / riddles / geocaches. dCode