double encryption

noun

UK /ˈdʌbəl ɪnˈkrɪpʃən/

US /ˈdʌbəl ɪnˈkrɪpʃən/

Double encryption means locking a secret message twice so it is extra safe.

The company used double encryption to keep its customers' passwords safe.

SYNONYMS

two-layer encryption dual encryption nested encryption double ciphering

RELATED WORDS

cryptography security password data protection

OTHER MEANINGS

2. The process of applying two separate encryption algorithms or keys to the same data.

Double encryption with two different keys makes the file much harder to crack.

3. A security practice where data is encrypted at the application level and again at the storage or network level.

The backup system relies on double encryption: once in the app and once on the disk.

4. Any redundant encryption step added to guard against a single point of failure in security.

Engineers added double encryption after the first breach exposed weak single-layer protection.