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Classical Ciphers·medium·30 pts
Le Chiffre Indéchiffrable
A polyalphabetic cipher that held its reputation for three centuries. It didn't survive the fourth.
This message was encrypted with a repeating-keyword cipher — the same construction that earned the nickname "the indecipherable cipher" long before anyone found a reliable way to break it.
The key is a short, common English word.
Ciphertext
tqh{drgwlbw_pxrhg_ev_qvbwtfx_zbrxtvwywfoucs}
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Background on this technique
Up next
Count Your Letters →A full substitution cipher — no repeating shift, no keyword. Every letter maps to a different letter, consistently.