![]() ![]() – no username is enteredįIDO2 is an evolution of U2F and is dependent upon WebAuthn (client API implemented within the browser) and CTAP2 (authenticator API that enables FIDO2-capable devices to interface to external/roaming authenticators over Bluetooth, USB or Near field communication (NFC)). Once the Yubikey is registered with an application (e.g., Azure Portal) for FIDO2 authentication, the user touches the Yubikey, optionally provides a PIN code for the key, logs straight in. FIDO2įIDO2 enables passwordless authentication. In the case of Gmail, once the user’s credentials are verified, the user touches the Yubikey for 2 nd factor. Once the registration is complete, the user can then use the authenticator as the 2 nd factor. This method requires the user to register the authenticator (e.g., Yubikey) with the application (e.g., Gmail) first, during which a key pair is generated by the authenticator, and the public key is sent and stored on the application. FIDO U2FįIDO U2F or U2F for short, mitigates MITM. In the case of Okta, the secrets can be uploaded directly into Okta and validation happens within Okta. When a service receives an OTP, it reaches out to Yubico for validation. Yubikey OTP integrates with a large number of services (e.g., Gmail, LastPass). However, the new secret has to be uploaded to Yubico’s validation servers ( ) otherwise OTP will stop working. Yubico provides a tool that allows you to re-program the key, giving it a different secret. ![]() E.g., A fake site impersonating a legitimate site can trick the user into entering the OTP and subsequently forwards it to the real site.Īll Yubikey’s by default have manufacture assigned secrets registered with Yubico’s own validation servers. However, it is also the weakest, as it does not mitigate against MITM attacks. OTP is probably the simplest, with a one-time password being used, typically as the 2 nd factor. ![]() ![]() As far as authentication goes, it supports a list of the following mechanisms.Įach of the above-mentioned protocols has its own set of requirements and is therefore not universally supported everywhere. The Yubikey ( ) supports three major functions, authentication, signing and encryption. ![]()
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