Verification of a login name and password is known as authentication.
User authentication is a process that allows a device to verify the identify of someone who connects to a network resource. There are many technologies currently available to a network administrator to authenticate users. ... The Firebox also has its own authentication server.
In cryptography, a message authentication code (MAC), sometimes known as a tag, is a short piece of information used to authenticate a message—in other words, to confirm that the message came from the stated sender (its authenticity) and has not been changed.
Authentication in cybersecurity. ... While authentication is the process of validating the identity of a registered user before allowing access to the protected resource, authorization is the process of validating that the authenticated user has been granted permission to access the requested resources.