You've breached a secure vault and discovered a message protected by the Vigenère cipher—a polyalphabetic substitution cipher once considered 'le chiffre indéchiffrable' (the indecipherable cipher). Unlike Caesar's simple shift, Vigenère uses a keyword to shift each letter by different amounts. The keyword has been compromised: 'CIPHER'. Decrypt the vault's contents before time runs out.

Encrypted Text: