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https://github.com/friendica/friendica
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81 lines
4.4 KiB
Markdown
81 lines
4.4 KiB
Markdown
# Configuring two-factor authentication
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* [Home](help)
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You can configure two-factor authentication using a mobile app.
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A time-based one-time password (TOTP) application automatically generates an authentication code that changes after a certain period of time.
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**Tip**: To configure authentication via TOTP on multiple devices, during setup, scan the QR code using each device at the same time.
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If 2FA is already enabled and you want to add another device, you must re-configure 2FA from your security settings.
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## Enabling two-factor authentication
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### 1. Download an authenticator app
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Any authenticator app should work with Friendica.
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Nonetheless, we recommend:
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- For iOS, [Matt Rubin's MIT-licensed Authenticator app](https://mattrubin.me/authenticator).
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- For Android, [andOTP](https://github.com/andOTP/andOTP).
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### 2. Record your one-use recovery codes
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From your [two-factor authentication user settings](/settings/2fa), enter your password and click on "Enable two-factor authentication".
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You will be presented with a list of one-use recovery codes.
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Please save those in the same place you are saving your Friendica password (ideally, in a password manager like [KeePass](https://keepass.info)).
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When you're done, click on "Next".
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### 3. Setup your authenticator app
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You have three methods to setup your authenticator app:
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1. Scan the QR Code with your device camera.
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This will automatically configure your account on the app.
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2. Click/tap on the provided **totp://** URl.
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Ideally your authenticator app should be called with this URL and set up your account.
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3. Enter your account settings manually.
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Friendica is using default settings for token type, code digit count and hashing algorithm but you may be required to enter them in your app.
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**Tip**: If you have multiple devices, configure them all at this point.
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Then verify your app is correctly configured by submitting a code provided by your app.
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This will conclude two-factor authentication configuration.
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**Note:** If you leave this screen at any point without having submitted a verification code, two-factor authentication won't be enabled on your account.
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To complete the configuration, just come back to your [two-factor authentication user settings](/settings/2fa) and click on "Finish configuration" after entering your current password.
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## Disabling two-factor authentication
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You can disable two-factor authentication at any time by going to your [two-factor authentication user settings](/settings/2fa) and click on "Disable two-factor authentication" after entering your current password.
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You should remove your Friendica account from your authenticator app as it won't work again even if you reenable two-factor authentication.
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In this case you will have to configure your authenticator app again using the process above.
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## Managing your one-time recovery codes
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When two-factor authentication is enabled, you can show your recovery codes, including the ones you've already used.
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You can freely regenerate a new set of fresh recovery codes, just be sure to replace the previous ones where you saved them as they won't be active anymore.
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## Third-party applications and API
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Third-party applications using the Friendica API can't accept two-factor time-based authentication codes.
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Instead, if you enabled two-factor authentication, you have to generate app-specific randomly generated long passwords to use in your apps instead of your regular account password.
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**Note**: Your regular password won't work at all when prompted in third-party apps if you enabled two-factor authentication.
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You can generate as many app-specific passwords as you want, they will be shown once to you just after you generated it.
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Just copy and paste it in your third-party app in the Friendica account password input field at this point.
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We recommend generating a single app-specific password for each separate third-party app you are using, using a meaningful description of the target app (like "Frienqa on my Fairphone 2").
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You can also revoke any and all app-specific password you generated this way.
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This may log you out of the third-party application(s) you used the revoked app-specific password to log in with.
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## Trusted browsers
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As a convenience, during two-factor authentication it is possible to identify a browser as trusted.
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This will skip all further two-factor authentication prompt on this browser.
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You can remove any or all of these trusted browsers in the two-factor authentication settings.
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