SUMMARY There doesn't seem to be any way to change the password on a vault. Could this functionality be added? SOFTWARE/OS VERSIONS Linux/KDE Plasma: openSUSE Tumbleweed (available in About System) KDE Plasma Version: 5.23.2 KDE Frameworks Version: 5.87.0 Qt Version: 5.15.2
It could be done for some backends, but not all support password changing. For example, cryfs doesn't seem to support it. What is important to note is that changing the password (in general) doesn't re-encrypt the data, so if an attacker has your old encfs/cryfs/... config file and the old password, it is likely that they would be able to access newly encrypted data as well. (didn't test this with the Vault-supported encryption schemes, but this is often the case). If Vaults get this feature, it will need a wall-of-text explaining what changing the password doe not defend against. For the time being, and a better practice in general is to create a new vault, move the data, delete the old vault.