The entity that verifies the authenticity of a digital signature using the public key.
Sources:
FIPS 186-5 under Verifier
NIST SP 800-102 under Verifier
NIST SP 800-89 under Verifier

  The entity that verifies the authenticity of a digital signature using the public key of the signatory.
Sources:
FIPS 204

  The entity that verifies the authenticity of a digital signature using the public key.
Sources:
FIPS 205 from FIPS 186-5

  The Bluetooth device that validates the identity of the claimant during the Bluetooth connection process.
Sources:
NIST SP 800-121 Rev. 2 under Verifier

  An entity that verifies the claimant’s identity by verifying the claimant’s possession and control of one or two authenticators using an authentication protocol. To do this, the verifier may also need to validate credentials that link the authenticator(s) to the subscriber’s identifier and check their status.
Sources:
NIST SP 1800-17b under Verifier

  An entity that confirms the claimant’s identity by verifying the claimant’s possession and control of one or more authenticators using an authentication protocol. To do this, the verifier needs to confirm the binding of the authenticators with the subscriber account and check that the subscriber account is active.
Sources:
NIST SP 800-63-4 [