What is zero-knowledge encryption?
*Zero-knowledge encryption*) is **a security method in which data is encrypted on your own device so that only you have the key to unlock it**—not even the service provider or cloud service can read your information.
**On-device encryption:** All data is encrypted and decrypted locally on your computer or phone before it is sent.
- **No access for others:** The server storing the files sees only unreadable, encrypted text (ciphertext).
- **Your own password:** Your password or encryption key never leaves your device and is not stored by the provider.
**Common Uses**
- **Password manager:** Saves your login credentials so that the company behind the app cannot see your actual passwords.
- **Cloud storage:** Protects files and documents so that the cloud provider cannot access the content or disclose it in plain text.
**On-device encryption:** All data is encrypted and decrypted locally on your computer or phone before it is sent.
- **No access for others:** The server storing the files sees only unreadable, encrypted text (ciphertext).
- **Your own password:** Your password or encryption key never leaves your device and is not stored by the provider.
**Common Uses**
- **Password manager:** Saves your login credentials so that the company behind the app cannot see your actual passwords.
- **Cloud storage:** Protects files and documents so that the cloud provider cannot access the content or disclose it in plain text.
