Tool for encrypting and decrypting messages with Twin Hex encryption, an encryption algorithm based on pairs of letters encoded in base 36.

Twin Hex Cipher - dCode

Tag(s) : Substitution Cipher

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The Twin Hex encryption process only works on printable ASCII characters (codes 32 to 127).

__Example:__ Encrypt the `dCode` message

Each pair of characters (bigram) is then indexed according to its rank among possible bigrams (the first bigram with codes `32,32` has the value $0$, then `32,33` has the index $1$, up to '127,127 ' which has a value of $9216). If the message is odd in length, complete with a space.

__Example:__ `dC` has index $ 6563 $, `od` has index $ 7652 $ and `e ` (a space has been added) has index $ 6624 $.

The index is then converted to base36 (symbols `0123456789abcdefghijklmnopqrstuvwxyz`) optionally supplemented by spaces (on the right) to obtain a trigram.

__Example:__ $ 6563_{(10)} = \texttt{52b}_{(36)} $ (see the page dedicated to base n conversion)

The concatenation of the trigrams obtained forms the encrypted message.

__Example:__ `dCode` is encrypted in Twin Hex as `52b5wk540`

To decipher Twin Hex ciphertext, the decryption process begins by breaking the text into trigrams.

__Example:__ Decrypt the message `3x35gu14 56g`

Each trigram is then considered as a base36 number whose decimal value corresponds to an index among the possible ASCII bigrams.

__Example:__ $ \texttt{3x3}_{(36)} = 5079_{(10)} $ and $ 5079 $ corresponds to the bigram `Tw`

$ \texttt{5gu}_{(36)} = 7086_{(10)} $ and $ 7086 $ matches the bigram `in`, etc.

The plain message consists of the concatenation of the bigrams obtained.

__Example:__ The original message is 'Twin Hex'

Twin Hex is made up of lowercase alphanumeric characters `a-z0-9` (default).

The indication *twin* or *jumeau* is a clue.

Mike Brockington's site here seems to be the original source but the form does not work correctly, use with caution.

dCode retains ownership of the "Twin Hex Cipher" source code. Except explicit open source licence (indicated Creative Commons / free), the "Twin Hex Cipher" algorithm, the applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, breaker, translator), or the "Twin Hex 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 "Twin Hex Cipher" are not public, same for offline use on PC, mobile, tablet, iPhone or Android app!

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Cite as source (bibliography):

*Twin Hex Cipher* on dCode.fr [online website], retrieved on 2024-06-16,

twin,hex,36,base

https://www.dcode.fr/twin-hex-cipher

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