Search for a tool
Monome-Dinome Cipher

Tool to decrypt/encrypt with Monome-Dinome cipher a Polybius square variant using coordinates in an incomplete grid.

Results

Monome-Dinome Cipher -

Tag(s) : Substitution 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!


Feedback and suggestions are welcome so that dCode offers the best 'Monome-Dinome Cipher' tool for free! Thank you!

Monome-Dinome Cipher

Monome-Dinome Decoder

 


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

Monome-Dinome Encoder

 


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

Answers to Questions (FAQ)

What is Monome-Dinome cipher? (Definition)

The monome-dinome cipher (or monome-binome) is a substitution cipher according to the coordinates of a grid (from the family of the Polybius square). Its characteristic is described in its name: certain letters are coded either by a monome (1 single digit) or by a dinome (2 digits).

How to create a grid for Monome-Dinome?

Monome-Dinome is compatible with several types of deliberately incomplete grids with at least 2 special columns which will be used as the header name for the following rows.

— Variant 1: a 3x10 grid with 2 empty squares on the first row.

Example: Grid with the keys of rows 3 and 7:

\0123456789
ABCDEFGH
3IJKLMNOPQR
7STUVWXYZ*

NB: 28 characters are possible, generally the 26 letters from A to Z, a space and a special character like *

— Variation 2: a 3x8 grid with missing columns.

Example: Grid with the keys of rows 3 and 7:

\01245689
ABCDEFGH
3IKLMNOPQ
7RSTVWXYZ

NB: only 24 characters are possible, generally J is replaced by I and V replaced by U

How to encrypt using Monome-Dinome cipher?

Monomial-binomial encryption consists in replacing each letter of the plain message by its coordinates in the grid.

Grid coordinates are read as [row,column]. The first row having no name, the coordinates are formed only from the name of the column.

Example: MONOME is coded 34,36,35,36,34,5 (3x10 grid)

How to decrypt Monome-Dinome cipher?

Monome-binomial decryption consists of reading the numbers which are the coordinates of the letters in the grid.

Take the first digit N, if it is not a row number, then the plain letter is on the first row, column N. Otherwise, take the second digit M and the plain letter is row N, column M.

Example: 4303536345 splits 4,30,35,36,34,5 and translates to DINOME (3x10 grid)

How to recognize a Monome-Dinome ciphertext? (Identification)

The text encoded by monome-binome is composed of digits.

The 2 digits representing key columns/rows are usually over-represented in frequency analysis.

What are the variants of the Monome-Dinome cipher?

The grid can/must be generated from a keyword in order to obtain a disordered alphabet.

The order of the columns can also be modified from a keyword in order to make a permutation.

When Monome-Dinome was invented?

The creation date of monome-binome is not known. There are historical traces of the use of this cipher during the Spanish Civil War in 1936.

Source code

dCode retains ownership of the "Monome-Dinome Cipher" source code. Except explicit open source licence (indicated Creative Commons / free), the "Monome-Dinome Cipher" algorithm, the applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, breaker, translator), or the "Monome-Dinome Cipher" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and all data download, script, or API access for "Monome-Dinome Cipher" are not public, same for offline use on PC, mobile, tablet, iPhone or Android app!
Reminder : dCode is free to use.

Cite dCode

The copy-paste of the page "Monome-Dinome Cipher" or any of its results, is allowed (even for commercial purposes) as long as you credit dCode!
Exporting results as a .csv or .txt file is free by clicking on the export icon
Cite as source (bibliography):
Monome-Dinome Cipher on dCode.fr [online website], retrieved on 2024-12-03, https://www.dcode.fr/monome-dinome-cipher

Need Help ?

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

Questions / Comments

Feedback and suggestions are welcome so that dCode offers the best 'Monome-Dinome Cipher' tool for free! Thank you!


https://www.dcode.fr/monome-dinome-cipher
© 2024 dCode — The ultimate 'toolkit' to solve every games / riddles / geocaching / CTF.
 
Feedback