Authenticator

Authenticator

An authenticator is a “secret that creates the binding between credentials and its presenter,” as described in the National Standards of Technology publication NIST SP 800-103. Authenticators can take the form of information, such as passwords or PINs; hardware, such as key fobs or smart cards; or some digital form, such as digital signatures and certificates.

Additional information is available in the PTAC publication Identity Authentication Best Practices.