Authenticated Mode of Operation

cryptography

Definition

Authenticated Mode of Operation

An authenticated mode of operation is a mode of operation that provides confidentiality, integrity, and authenticity simultaneously.

Examples

Galois-Counter Mode (GCM)

Combines CTR mode encryption with a Galois-field MAC.

Counter with CBC-MAC (CCM)

Combines CTR mode encryption with a CBC-MAC for authentication.

EAX Mode

Combines CTR mode encryption with an encrypted CBC-MAC.

Adoption

TLS 1.3

Starting from version 1.3, TLS supports exclusively cipher suites making use of authenticated encryption modes.