Version: 1.1 (using KDE 4.1.1) Compiler: gcc version 4.1.2 (Gentoo 4.1.2 p1.1) OS: Linux Installed from: Gentoo Packages If you are trying to decrypt a encrypted media via dolphin's sidebar, the dialog which prompts you to specify a password appears. This is fine, if you don't have encrypted media that is encrypted via a key-file. In my case, I have external devices that can only be decrypted by a specific key file that is stored on a local encrypted harddisk. It would be nice, if the dialog which requests the password will be modified in a way that it is possible to select a key-file via the file-open-dialog or to enter a password.
This bug still exists in KDE 4.6.0 As far as my search in the code took me, this is a problem with kded's SolidUIServer::showPassphraseDialog() which does not supply means of specifying a file containing the key to a LUKS device. Unfortunately UDisks documentation of LuksUnlock() does not state clearly how a key-file should be used, but my test verified it is sufficient to supply the content of the key-file as passphrase parameter to get it unlocked. I'd opt for a KPassphraseDialog supplying an option to specify a key-file returning its contents as first parameter of signal gotPassword().