Security and privacy
Encryption
In short and in plain language
Encryption uses a secret key to make data unreadable.
If you lack the key, you cannot read the data.
It is used for Wi-Fi, for data on a phone or for messages.
With the right key, the data can be read again.
Definition
Encryption uses a secret key to make data unreadable to anyone who does not have the key. It is used, for example, for Wi-Fi, for data stored on a phone or for messages. The data becomes readable again with the matching key.