keyword-based cryptography

noun

UK /ˈkiːwɜːd beɪst krɪpˈtɒɡrəfi/

US /ˈkiwɜːrd beɪst krɪpˈtɑːɡrəfi/

A way to keep messages secret by using a special word as a key.

The spy used keyword-based cryptography to hide the plan inside an ordinary letter.

SYNONYMS

keyword cipher keyword encryption word-key cryptography keyword cryptosystem

RELATED WORDS

cipher encryption decryption secret key cryptogram

OTHER MEANINGS

2. A classical encryption method where a keyword sets the order of letters in a substitution alphabet.

In keyword-based cryptography, the word 'LEMON' rearranges the alphabet for the cipher.

3. A system that protects data by requiring a secret word or phrase to unlock it.

The old diary used keyword-based cryptography, so only the right word opened its secrets.

4. The practice of encoding messages so that only someone who knows the keyword can read them.

Students learned keyword-based cryptography by writing notes only their friends could decode.