## About

Encryption is the function of a cipher that transforms usable data into an unreadable form.

It provides confidentiality ^{1)} if a secret is used in the encryption.

## List

There is two class of encryption.

- an asymmetric encryption that used the private key of the private/public key pair
- …

- a symmetric encryption that uses:
- no key such as digest (hash) or base encryption (base64, 36, …)

^{1)}