Cabinet Noir
>Practice / Vigènere cipher
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Each letter of the message is shifted by the matching letter of a repeating key.
Type
polyalphabetic substitution cipher
Breaking it
hard to break by hand
Era
16th century
Name
Described by Giovan Battista Bellaso in 1553, later misattributed to Blaise de Vigenère.
Modes
encrypt · decrypt · cryptoanalysis
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Tool
Cryptoanalysis
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History
Practice
Practice
Vigènere cipher
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Break a message from the novel
Easy
KTPCSMJEUGSMQFMKMXUIMYALVHXYOKUTHHTBOELKTPCSMJETIEHHWBUDHOIMYALVHXCGXQFYQOEKSAPELU
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The novel continues
Easy
TXIOFELQPRDXATGTQQGVEAMGGSIICEDXATGTQQGVEAMGGSIMURZJIWFOSYWGHEEHUPESSBQJACYTWTBRDWUHJLWFVRPTAQUZJNSYTIRWGHEEHUPIBCPSSRWANVQRHWMFMVEAMGGSIESNDSZCSWMSVGTXIOFELQGRLWABBQHMFXYIEG
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A truth universally acknowledged
Medium
WKIFGXFLTUARWMEEYEZCYNIOBFWYKHUVDGNEHRSVTKZVMNTMBGOFYIGJIBTSTRGBUHTFRGARSDUFZFSZNJGRHFFNCMTV
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Once upon a midnight dreary
Medium
FNXIHGOIEZZDIMTYTYVRRRTAUZLZMCFNYIEVDRINBAIHJVAMCBMEMVNIEVRQIAYMNETHEVUEIAUFMOLRRNBIYJNVQRU
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To be or not to be
Hard
GWHLHZAUTESOMZOTBVYTSIDCKZMQBTWSIGPKYMQFTOMPRZOUMPRSIYHGWYBYNRXTSIFTOUZIAJACVBEYVYWHZRLKRWAZ
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Four score and seven
Hard
ZBVIWCYRFLRXFFMINIEBCWUTPFYRPAUSILFCISUQHUQSLGIFRTRITNSHGJEINDAOPA
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Created by Denys Grybov in 2021
v.0.4.0 // released on 18.10.2026