Information Security

Questions tagged [fido2]

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“Something you have” on a multi-user device - what is the opinion regarding the NIST AAL3 definition?

The NIST AAL3 specification requires In order to authenticate at AAL3, claimants SHALL prove possession and control of two distinct authentication factors through secure authentication ...
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41 views

WebAuthn Variation with non-connect dongle Authenticator

As I read through the WebAuthn / FIDO2 documentation, it appears the authentication is done on the local device to create an attestation to the FIDO server. This future implies the "biometrics" or ...
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120 views

Why does WebAuthn require a challenge when asking the client to register a new credential?

When registering a new credential as part of WebAuthn, why does the client need to be sent a challenge? Presumably this is to prevent a replay attack, but wouldn't a replay attack be prevented by TLS ...
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216 views

Does injecting my own key material into the authenticator undermine authenticator's attestation?

I'd like to be able to inject my own key material in the FIDO2 authenticator; at the very least it will remove the need to trust the vendor (because we have no guarantee whether the vendor keeps ...
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171 views

FIDO and FIDO2 differences

I've been reading both FIDO and FIDO2 specs for a while tring to understand the similarities and differences between both. Here is how I broke it down so far: FIDO: First iteration in creating a ...
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61 views

Practicality of Direct Anonymous Attestation [closed]

DAA (Direct Anonymous Attestation) is not the only scheme to achieve anonymous attestation. In general, these schemes allow an entity to stay anonymous throughout the attestation process. The concern ...
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101 views

Yubikey - WebAuthn and U2F

I have a yubikey which supports only U2F. It doesn't support FIDO2. I read about U2F and i understand how it works. When i test my Yubikey for WebAuthn on https://webauthn.io it works. I wanted to ...
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100 views

Is there any privacy- or security-relevant difference between FIDO2 and SQRL

I just learned about FIDO2 (WebAuthn) and try to make a comparison to the lesser-known novel SQRL authentication scheme. Both seem to use the same key elements: a private, user-resident "master key" ...