Tool to decrypt/encrypt Trithemius. The Trithemius cipher is a polyalphabetic encryption method invented by the German abbot Trithemius. This code is a sequence of shifts from 0 to N shift in the alphabet.
Trithemius Cipher - dCode
Tag(s) : Poly-Alphabetic Cipher
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!
Tool to decrypt/encrypt Trithemius. The Trithemius cipher is a polyalphabetic encryption method invented by the German abbot Trithemius. This code is a sequence of shifts from 0 to N shift in the alphabet.
The encryption uses successive shifts (positive and ascending - ie. to the right) in the alphabet from 0 to N where N is the length of the text.
Example: To code DCODE shift D from 0 an get D, shift C by 1 and get D, shift O by 2 and get Q, shift D by 3 and get G, and shift E by 4 and get I. The coded message is DDQGI.
With a classical alphabet ABCDEFGHIJKLMNOPQRSTUVWXYZ, Trithemius cipher is equivalent to a Vigenere cipher with ABCDEFGHIJKLMNOPQRSTUVWXYZ or equivalent to a Caesar cipher with a shift that increases by 1 by each letter starting at 0.
Decryption requires successively shifting in the other direction in the alphabet. To shift negatively to the right is equivalent to shift positively to the left.
Example: To decode TSKWLJSPCB shift T by 0 and get T, shift S by -1 and get R, shift K by -2 and get I, etc. The plain message is TRITHEMIUS.
- The shift may be ascending/increasing or descending/decreasing.
- By default, the shift starts at 0, but it is conceivable to start it at 1 or any other number.
- The alphabet used can be a deranged alphabet or a completely personalized alphabet.
- Other types of shift sequences may be imagined (see shift ciphers).
The ciphered message has a low index of coincidence (0.04-0.05).
During Renaissance, near 1480.
dCode retains ownership of the online 'Trithemius Cipher' tool source code. Except explicit open source licence (indicated CC / Creative Commons / free), any algorithm, applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (PHP, Java, C#, Python, Javascript, Matlab, etc.) no data, script or API access will be for free, same for Trithemius Cipher download for offline use on PC, tablet, iPhone or Android !
Please, check our community Discord for help requests!