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64 lines
2.0 KiB
Markdown
64 lines
2.0 KiB
Markdown
---
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layout: default
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title: Security Keys
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nav_order: 2
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parent: Second Factor
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grand_parent: Features
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---
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# Security Keys
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**Authelia** supports hardware-based second factors leveraging security keys like
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[YubiKey]'s.
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Security keys are among the most secure second factor. This method is already
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supported by many major applications and platforms like Google, Facebook, Github,
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some banks, and much more...
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<p align="center">
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<img src="../../images/yubikey.jpg" width="150">
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</p>
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Normally, the protocol requires your security key to be enrolled on each site before
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being able to authenticate with it. Since Authelia provides Single Sign-On, your users
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will need to enroll their device only once to get access to all your applications.
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<p align="center">
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<img src="../../images/REGISTER-U2F.png" width="400">
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</p>
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After having successfully passed the first factor, select *Security Key* method and
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click on *Not registered yet?* link. This will send you an email to verify your identity.
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*NOTE: This e-mail has likely been sent to the mailbox at https://mail.example.com:8080/ if you're testing Authelia.*
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Confirm your identity by clicking on **Register** and you'll be asked to
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touch the token of your security key to complete the enrollment.
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Upon successful enrollment, you can authenticate using your security key
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by simply touching the token again when requested:
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<p align="center">
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<img src="../../images/2FA-U2F.png" width="400">
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</p>
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Easy, right?!
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## Limitations
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Users currently can only enroll a single U2F device in **Authelia**.
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Multiple single type device enrollment will be available when [this issue](https://github.com/authelia/authelia/issues/275) has been resolved.
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## FAQ
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### Why don't I have access to the *Security Key* option?
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U2F protocol is a new protocol that is only supported by recent browsers
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and might even be enabled on some of them. Please be sure your browser
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supports U2F and that the feature is enabled to make the option
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available in **Authelia**.
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[YubiKey]: https://www.yubico.com/products/yubikey-5-overview/
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