Got it. Here's the code: https://github.com/passbolt/passbolt/blob/master/app/Controller/Component/Auth/GpgAuthenticate.php#L105 https://github.com/passbolt/pas

Got it. Here's the code: https://github.com/passbolt/passbolt/blob/master/app/Controller/Component/Auth/GpgAuthenticate.php#L105 https://github.com/passbolt/passbolt/blob/master/app/Control... I didn't know gpgauth existed, but this is what they appear to be using (the site has a broken cert): https://gpgauth.org/ https://gpgauth.org/