T is the current time in seconds since a particular epoch,.C T is the count of the number of durations T X between T 0 and T,.TOTP uses the HOTP algorithm, replacing the counter with a non-decreasing value based on the current time:Ĭ T = ⌊ T − T 0 T X ⌋, Some authenticators allow values that should have been generated before or after the current time in order to account for slight clock skews, network latency and user delays. T X, an interval which will be used to calculate the value of the counter C T (default is 30 seconds).īoth the authenticator and the authenticatee compute the TOTP value, then the authenticator checks whether the TOTP value supplied by the authenticatee matches the locally generated TOTP value.T 0, the Unix time from which to start counting time steps (default is 0),.To establish TOTP authentication, the authenticatee and authenticator must pre-establish both the HOTP parameters and the following TOTP parameters: In May 2011, TOTP officially became RFC 6238. This version incorporates all the feedback and commentary that the authors received from the technical community based on the prior versions submitted to the IETF. In 2008, OATH submitted a draft version of the specification to the IETF. It complements the event-based one-time standard HOTP, and it offers end user organizations and enterprises more choice in selecting technologies that best fit their application requirements and security guidelines. Through the collaboration of several OATH members, a TOTP draft was developed in order to create an industry-backed standard. TOTP is the cornerstone of Initiative for Open Authentication (OATH), and is used in a number of two-factor authentication (2FA) systems. As an extension of the HMAC-based one-time password algorithm (HOTP), it has been adopted as Internet Engineering Task Force (IETF) standard RFC 6238. You are successfully logged in as the test user.Time-based one-time password ( TOTP) is a computer algorithm that generates a one-time password (OTP) using the current time as a source of uniqueness. On the registered device, open the ForgeRock authentication app to display the 6 digit verification code.Įnter the verification code in the Identity Cloud sign in screen and click Submit.

Paste the same OATH journey URL (you created previously) into a browser using Incognito or Browsing mode.Įnter the test user’s username and password and click Next. NOTE: If the user logs in using the OATH device they can delete the device from their profile. Uc_profile_2-step-verification 944×320 36.1 KBĬlick Change to verify that the OATH device has been registered. Įnter a unique name for the OATH journey, select which identities will authenticate using this journey, (optionally) enter a journey description, and click Save.Sign in to the Identity Cloud admin UI using your admin tenant URL, in the format To create a simple OATH authentication journey: NOTE: ForgeRock also supports a number of third-party OATH-compliant authenticators, including Google Authenticator and Yubico’s YubiKey devices. It uses the ForgeRock Authenticator app, which is available for iOS and Android devices and can be downloaded from the Apple App Store or Google Play. This simple use case demonstrates how to build a user journey in Identity Cloud that prompts the user to authenticate with TOTP for second-factor authentication. Users can register their devices, using a QR code, to generate OTPs which can be used to securely log in. These methods authenticate based on codes generated using a secret shared previously by the ForgeRock server and an OATH-compliant device. Allowing two-factor authentication using hardware or software-based tokens based on OATH standards for strong authentication is a very common use case that is easily implemented in ForgeRock Identity Cloud.įorgeRock provides built-in support for HMAC one-time passcode (HOTP) and time-based one-time passcode (TOTP) as authentication and authorization methods.

Google authenticator totp mode vs hotp