"define encryption"

What is encryption?

Encryption is a way to protect information from unauthorized access. Encryption converts original information into an alternative form, using encryption keys.

The keys used for encryption can be used to regain the original information from the alternative form. This reverse process is called decryption.

Encrypted content is unintelligible (read as: useless) to unauthorized reading because the reader doesn't have the keys.

Glossary
This is a focused list of definitions, published to help our readers understand what we mean in our simple language guides on techniques and IT.
Dog with heart-shaped nose in a screen, AKA the Majorcord logo.