Install – Nextcloud
https://nextcloud.com/installThe Web Installer is the easiest way to install Nextcloud on a web space. It checks the dependencies, downloads Nextcloud from the official server, unpacks it with the right permissions and the right user account. Finally, you will be redirected to the Nextcloud installer. Right-click here and save the file to your computer.
Encryption in Nextcloud – Nextcloud
https://nextcloud.com/encryptionIf you have an external key server or Hardware Security Module, these can be made to work with Nextcloud. Our default encryption key handling enables administrators to set a system wide recovery key for encrypted files,. This ensures that, even when users lose their password, files can always be decrypted.