![]() My understanding is that the improved security of U2F is most beneficial on PCs the attack vector for OTP on mobile via NFC should be fairly small. I am a new Yubikey user, so I am not sure of the security differences between OTP and U2F. Combined with the fingerprint lock on mobile, I think this is a reasonable configuration, but may not be suitable for people who switch phones regularly. However, if you rarely switch phones, then you can use a back-up code to disable 2FA (or temporarily disable U2F on a PC), log in, and then re-enable U2F after logging in. Accessing this applet requires Yubico Authenticator. YubiKey hardware token U2F hardware device U2F authenticator U2F security token. The YubiKey 4 series can hold up to 32 OATH credentials and supports both OATH-TOTP (time based) and OATH-HOTP (counter based). Mobile Phone (cell phone other than a smartphone) YubiKey Security Key. This means that there will theoretically be no way to log into Bitwarden on a new phone. The U2F application can hold an unlimited number of U2F credentials and is FIDO certified. ![]() I am also considering only enabling U2F on Bitwarden. This article differentiates between the two functionalities of the. ![]() This OTP half is what you’ll need to use with the An圜onnect clients. The OTP half must be added by an Admin and is managed like a typical hardware token. Duo disabled Admin API U2F Token endpoints, and API requests to this endpoint will return a 403 response. The U2F half is limited to use with Chrome and users can enroll it (associate it with their Duo account) themselves. ![]() This means that I should be able to use U2F on any PCs with a USB port and fallback to Yubikey OTP on mobile. Duo disabled U2F as an allowed authentication method wherever it was currently enabled in Duo policy on customer accounts, and enabled WebAuthn instead as needed. You can manually switch to and use any method during login, however. If you have multiple two-step login methods enabled, the order of preference for the default method that is displayed while logging in is as follows: FIDO U2F → YubiKey → Duo → Authenticator app → Email. You can enable multiple two-step login methods. U2F is supported on Android via NFC by way of Chrome and Google Authenticator APIs, but I am not aware of any apps that implement U2F support.Īs a work-around, my plan is to enable U2F and Yubikey OTP on Bitwarden using my NEO for both. I voted because I think this important, but my understanding is that there are no available C# libraries to enable this behavior.
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