authenticator app -> επαληθευτής, εφαρμογή επαλήθευσης, εφαρμογή επαλήθευσης ταυτότητας, εφαρμογή επαλήθευσης ταυτότητας χρήστη, εφαρμογή πιστοποιητικού ταυτότητας, εφαρμογή πιστοποίησης ταυτότητας
An authenticator is the means used to confirm the identity of a user, that is, to perform digital authentication. A person authenticates to a computer system or application by demonstrating that he or she has possession and control of an authenticator. In the simplest case, the authenticator is a common password.
Using the terminology of the NIST Digital Identity Guidelines, the party to be authenticated is called the claimant while the party verifying the identity of the claimant is called the verifier. When the claimant successfully demonstrates possession and control of one or more authenticators to the verifier through an established authentication protocol, the verifier is able to infer the claimant’s identity.https://en.wikipedia.org/wiki/Authenticator
A data structure used by one party to prove that another party knows a secret key. In the Kerberos authentication protocol, authenticators include timestamps, to prevent replay attacks, and are encrypted with the session key issued by the Key Distribution Center (KDC).
AuthenticatorThe app for multi-factor authentication, device registration to Azure AD, and SSO/certificate-based authentication against Azure AD that generates a security code the user must enter to verify his/her identity or, for enterprise users, a QR code to scan.https://www.microsoft.com/en-us/language/Search?&langID=361&Source=true&productid=0&searchTerm=authenticator