Varmistusonetimepassword
Varmistusonetimepassword is a term used to describe a one-time password used to verify a user's identity in authentication processes. It forms a common component of two-factor authentication (2FA) and multi-factor authentication (MFA).
OTPs are generated by algorithms such as HOTP and TOTP (standards RFC 4226 and RFC 6238). A
Delivery methods include software authenticator apps, hardware tokens, SMS messages, or email. In enterprise settings, OTPs
Security considerations: OTPs improve security by requiring possession of the verification device, but they can be
Implementation notes: configure reasonable code lengths, use secure channels (HTTPS), protect secret seeds, enforce rate limiting
See also: two-factor authentication, one-time password, TOTP, HOTP, WebAuthn.