Authentication

Authentication (from Greek: αὐθεντικός authentikos, "real, genuine", from αὐθέντης authentes, "author") is the act of proving an assertion, such as the identity of a computer system user. In contrast with identification, the act of indicating a person or thing's identity, authentication is the process of verifying that identity. Authentication is relevant to multiple fields.

Extends: Authentication, [Access control](https://wikipedia.org.ai/Access control), [Applications of cryptography](https://wikipedia.org.ai/Applications of cryptography), [Computer access control](https://wikipedia.org.ai/Computer access control), Notary