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A cipher disc is a mechanical tool made up of 2 dials (1 inner disc and 1 outer disc) making it possible to represent a mono-alphabetic substitution by rotating the discs relative to each other. The alignment of the boxes thus obtained indicates the correspondence of the letters.
Free tools for code-breaking, solving ciphers and logic puzzles, room escape games, CTFs, Cicada 3301 and more.
This multi decoder is designed to solve a wide variety of codes and ciphers, especially useful for Geocaching. Easy to use for both mobile and desktop browsers!
This tool uses AI/Machine Learning technology to recognize over 25 common cipher types and encodings including: Caesar Cipher, Vigenère Cipher (including the autokey variant), Beaufort Cipher (including the autokey variant), Playfair Cipher, Two-Square/Double Playfair Cipher, Columnar Transposition Cipher, Bifid Cipher, Four-Square Cipher ...
I think this version of a cipher disk is best used along with some type of word puzzle or riddle. Below is an example how we used an analogy for the puzzle in an escape room we did for a youth event at church. "Simon is to Andrew as James is to _____" Key is 1=G. The solution is JOHN which decodes to 4928 when the key is applied.
Finding out which cipher was used can vary from being quite simple to very difficult. It is helpful to know that most messages encountered in practice have been encrypted with one of about a dozen methods that can usually be distinguished from each other with some analysis.
A cipher disk is an enciphering and deciphering tool developed in 1470 by the Italian architect and author Leon Battista Alberti. He constructed a device, (eponymously called the Alberti cipher disk) consisting of two concentric circular plates mounted one on top of the other.
