Search for a tool
Redefence Cipher

Tools to decrypt/encrypt with Redefence automatically. Redefence cipher is a variant of Rail Fence with a key that defines the order of lines to be read after zig-zag writing.

Results

Redefence Cipher -

Tag(s) : Transposition Cipher

Share
Share
dCode and more

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 dCode Discord community for help requests!
NB: for encrypted messages, test our automatic cipher identifier!


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

Redefence Cipher

Redefence Decoder






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

Redefence Encoder




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

Answers to Questions (FAQ)

How to encrypt using Redefence cipher?

The Redefence cipher is similar to the Rail-Fence transposition cipher except that it uses a key that defines both the number of levels in the zig zag and the order in which the lines are read.

Example: The plain message is DCODEZIGZAG and the key ZIG (of size N=3 letters).

The message is encrypted by Redefence (as with Rail Fence) by writing it in zig-zag on N levels.

Example: (1-Z): D---E---Z--
(2-I): -C-D-Z-G-A-
(3-G): --O---I---G

The characteristic of Redefence is to have a key that defines the reading order of the lines.

Example: The letters of the key ZIG are then arranged in alphabetical order G,I,Z which defines the reading order of the lines 3,2,1.

Example: The encrypted message is therefore composed of line 3 OIG, line 2 CDZGA and line 1 DEZ so the final message is OIGCDZGADEZ

How to decrypt a Redefence cipher?

Redefence decryption requires knowing the encryption key because it conditions the number of levels N and the order of reading.

Example: The encrypted message is DNRFEEEEC and the key ZAG (2,3,1) of size N=3.

The expected shape is drawn (depending on the number of levels and the length of the message).

Example: X---X---X
-X-X-X-X-
--X---X--

Then write the letters of the text starting with line 1 (defined according to the key).

Example: (2): R---F---E
(3): -E-E-E-C-
(1): --D---N--

The plain message is then readable in zig-zag from left to right.

Example: The plain text is REDEFENCE

How to recognize Redefence ciphertext?

Redefence is a transposition cipher, so the frequency analysis and the coincidence index of the message are similar to that of the plaintext language.

How to decipher Redefence without the key?

As for Rail-Fence, a brute-force attack of all levels (2 to N) is possible. Extra work is required to find the order of the lines.

What are the variants of the Redefence cipher?

Redefence is a variant of the Rail Fence cipher adding the possibility of modifying the order of reading of the lines forming the zig-zag.

Source code

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

Need Help ?

Please, check our dCode Discord community for help requests!
NB: for encrypted messages, test our automatic cipher identifier!

Questions / Comments

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


Source : https://www.dcode.fr/redefence-cipher
© 2021 dCode — The ultimate 'toolkit' to solve every games / riddles / geocaching / CTF.
Feedback