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Mourier Alphabet

Tool to write/decode Mourier's geometric alphabet proposed in 1971 and based on a square of 7x7 units.

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Mourier Alphabet -

Tag(s) : Symbol Substitution

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Mourier Alphabet

Mourier Decoder

See also: Betamaze Cipher

Mourier Encoder

 



Answers to Questions (FAQ)

What is the Mourier alphabet? (Definition)

The Mourier alphabet is a geometric alphabet defined by the danish designer Eric Mourier in 1971. It associates the latin letters with a symbol created from a 7x7 square (49 squares) composed only of lines which do not intersect and separated by a space of the same size.

How to encrypt using Mourier alphabet?

In the original version of 1971 Mourier proposed a substitution of the letters A-Z by a Mourier square symbol according to the correspondence table:

Achar(65)Bchar(66)Cchar(67)Dchar(68)Echar(69)Fchar(70)Gchar(71)
Hchar(72)Ichar(73)Jchar(74)Kchar(75)Lchar(76)Mchar(77)Nchar(78)
Ochar(79)Pchar(80)Qchar(81)Rchar(82)Schar(83)Tchar(84)Uchar(85)
Vchar(86)Wchar(87)Xchar(88)Ychar(89)Zchar(90)
dCode.fr

Example: MOURIER is written as char(77)char(79)char(85)char(82)char(73)char(69)char(82)

The alphabet was then digitized in typeface in 2002 by Sébastien Hayez, and was enriched with ASCII characters.

A 2.0 version has been available since 2020 to adapt to Cyrillic characters.

dCode is intentionally limited to version 1.0 with uppercase letters A-Z, lowercase a-z, numbers 0-9 and the characters #, $, &, * and /.

How to decrypt Mourier alphabet?

The Mourier alphabet is a mono-alphabetic substitution (1 Mourier symbol = 1 plain letter or number character) so a replacement of the symbols makes it possible to find the plain message.

Example: char(68)char(67)char(79)char(68)char(69) is translated DCODE

How to recognize a Mourier ciphertext? (Identification)

The Mourier alphabet is resolutely geometric with a fixed size of 7x7 small squares.

The assembly of characters can make one think of a labyrinth.

Any use of the alphabet or the font must cite the source and the license: Mourier, SIL Open Font License, v1.1, available in the Velvetyne directory here

Source code

dCode retains ownership of the "Mourier Alphabet" source code. Any algorithm for the "Mourier Alphabet" algorithm, applet or snippet or script (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, breaker, translator), or any "Mourier Alphabet" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) or any database download or API access for "Mourier Alphabet" or any other element are not public (except explicit open source licence like Creative Commons). Same with the download for offline use on PC, mobile, tablet, iPhone or Android app.
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NB: for encrypted messages, test our automatic cipher identifier!

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