Cabinet Noir
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A symbol substitution: every letter becomes a fragment of a grid — the famous Freemason's cipher.
Type
substitution cipher
Breaking it
trivial to break
Era
18th century (variants since antiquity)
Name
Popularly the Freemasons, who used it for records and rites; earlier variants are older still.
Modes
encrypt · decrypt
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Pigpen cipher
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Created by Denys Grybov in 2021
v.0.4.0 // released on 18.10.2026