Enter here your username from envs.net starting with a `@` sign followed by your username and the text `:envs.net`. For the user `isabell` it should like `@isabell:envs.net`.
Matrix not only encrypts transports to and from the home server of envs.net but also allows the use of end-to-end encryption (E2EE). For this, cryptographic keys have to be exchanged between all devices that want to write end-to-end encrypted. This technical necessity sounds and is complicated, but in the meantime it has become very convenient for the users. The many cryptographic keys created by the client are stored on the respective device. If this is a tab in a browser, for example, there is a risk that this tab will be closed unintentionally. Then all encrypted contents are no longer readable. To prevent this from happening, a key protection is offered on the home server of the envs.net, on which (protected with a security phrase (or security key that can be calculated from it) all cryptographic keys are stored encrypted.
!!! danger
It is highly recommended to use this key backup (with a secure security phrase which is **NOT** your login password)!
Alternatively, instead of the security phrase, you can also have a security key generated that serves the same purpose as the security phrase. Furthermore, the security key is generated in addition to the security phrase and should be kept safe and retrievable as an emergency key (e.g. save it as .txt file AND print it out)
Key protection is highly recommended for worry-free end-to-end encryption. For this reason, a smaller tooltip will prompt you to set up the encryption even after you skip further:
If you omit this here as well, you will get a last warning if you log off consciously. If no key backup is set up at the latest, encrypted calls that may have already taken place cannot be accessed later. If the tab is closed, this also corresponds to a logout.
