![]() ![]() 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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