double-lock encryption

noun

UK /ˈdʌbəl lɒk ɪnˈkrɪpʃən/

US /ˈdʌbəl lɑːk ɪnˈkrɪpʃən/

A way to keep a message safe by locking it with two secret codes instead of one.

The app uses double-lock encryption so that even if one key is stolen, the data stays safe.

SYNONYMS

two-layer encryption dual-key encryption double encryption two-factor encryption

RELATED WORDS

cryptography security key data protection cipher

OTHER MEANINGS

2. A security setup where data is encrypted once, then encrypted again with a different key.

The backup drive relies on double-lock encryption to protect sensitive files.

3. Any system that requires two separate locks or passwords before access is granted.

The vault's double-lock encryption means two managers must each enter a code.

4. A marketing term for products that combine two independent encryption methods.

Their new router advertises double-lock encryption for home networks.