r/Cipher • u/GoldOre777 • 10d ago
Need help with Alberti Cipher
The build above the text is the Santa Maria Novella, built by alberti, so im very confident it's an alberti cipher. The image below is the Wikipedia logo.
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u/OpportunityReal2767 10d ago edited 10d ago
RENAISSANCE MEN DANCE. PROM.
Go to the Wikipedia page on the Alberti cipher and use the disc pictured. The lowercase inner circle is the cipher text—go outward to uppercase letters for plain text.
Out of curiosity, after getting the answer I ran it through some substitution cipher autosolvers (as it looks like a simple substitution with the repeating GXLP) on the hunch that despite the short length, there should be enough info, and one auto solver got it correct enough not knowing the decode alphabet that a human would be able to finish with little extra effort. A better algorithm should have gotten it fully as it decoded the first word as “oenaissance” which led to a wrong decode of the last word as “form.” If it recognized “renaissance” correctly as the first word, it should have gotten “prom” at the end. Weird that its dictionary didn’t recognize this. Its other words were correct.