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Dorabella Cipher

Tool to decipher / encrypt like the Dorabella cipher, name given to a message coded by Edward Elgar, whose original plain message is not certain.

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Dorabella Cipher -

Tag(s) : Symbol Substitution

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Dorabella Cipher

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Answers to Questions (FAQ)

What is the Dorabella cipher?

Dorabella's cipher is the name given to a message sent by composer Edward Elgar dated July 14, 1897, in a letter to Dora Penny. The message takes the form of 86 characters (with 24 distinct characters) written on 3 lines: <b><dfn>dorabella</dfn></b>.png

The 24 characters and their distribution (based on frequency analysis) are compatible with encryption by mono-alphabetical substitution. Edward Elgar never disclosed the original message but would have described his alphabet and substitution table as follows:

LetterSymbolLetterSymbolLetterSymbol
Achar(65)Bchar(66)Cchar(67)
Dchar(68)Echar(69)Fchar(70)
Gchar(71)Hchar(72)I/Jchar(73)
Kchar(75)Lchar(76)Mchar(77)
Nchar(78)Ochar(79)Pchar(80)
Qchar(81)Rchar(82)Schar(83)
Tchar(84)U/Vchar(85)Wchar(87)
Xchar(88)Ychar(89)Zchar(90)
dCode.fr
allowing the translation of the message into BPECAHTCKYFRQDRIRRHPPRDXYXGFS
TRTHTCKLCERREHGQTRFRHUSQDXKKXFS
ESHUSEDUWGSERHUQSDCPGSHCDXC

Other alphabets have been proposed but this message has never been clearly decrypted even if several people have tried various translations, none has convinced the community.

The presence of a dot near the end of the first line is sometimes considered to be an 87th character (and therefore 25 distinct)

How to encrypt using Dorabella cipher?

Based on the alphabet proposed by Edward Elgar, it is possible to encrypt a message with this alphabet of 24 symbols whose letters I,J and U,V are grouped together to be coded by the same symbol.

Example: DORA is coded char(68)char(79)char(82)char(65)

How to decrypt Dorabella cipher?

As the translation of the Dorabella message remains to be discovered, the decryption can only be based on the supposed 24-letter alphabet. The decryption principle is a substitution (replacement) of symbols with the corresponding letters in the alphabet.

Example: char(66)char(69)char(76)char(76)char(65) is decrypted BELLA

How to recognize a Dorabella ciphertext?

Dorabella symbols are arc/semicircles/halfcircles assembled by 1, 2 or 3 and oriented in 8 directions ↑ ↗ → ↘ ↓ ↙ ← ↖

All references to Edward Elgar or Dora are clues.

When Dorabella was invented?

The original message is dated July 14, 97 (for 1897)

Source code

dCode retains ownership of the online "Dorabella Cipher" source code. Except explicit open source licence (indicated CC / Creative Commons / free), the "Dorabella Cipher" algorithm, the applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or the "Dorabella 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, copy-paste, or API access for "Dorabella Cipher" are not public, same for offline use on PC, tablet, iPhone or Android ! Remainder : dCode is free to use.

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 'Dorabella Cipher' tool, so feel free to write! Thank you!


Source : https://www.dcode.fr/dorabella-cipher
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