multi-ciphercode

noun
UK /ˌmʌltiˈsaɪfəkəʊd/
US /ˌmʌltiˈsaɪfərkoʊd/

A multi-ciphercode is a secret code that uses more than one way to hide a message.

The spy wrote her note in a multi-ciphercode so that even if someone cracked one part, the rest stayed secret.


OTHER MEANINGS

2. A system that switches between several ciphers while encoding a single message.

The app's multi-ciphercode changed its pattern every few letters to confuse eavesdroppers.

3. A puzzle or game where players must solve two or more different codes to finish.

The escape room's final challenge was a multi-ciphercode that took the team ten minutes to break.

4. A set of rules for translating text using multiple substitution alphabets at once.

Historians found a multi-ciphercode in the old diary, mixing numbers and shifted letters.