Need help decrypting home directory

Hi all

My wife’s OpenSUSE 11.1 laptop got borked today (don’t quite know how, but that is less important right now). It is now not able to boot. I have successfully copied her home directory to an external disk. Unfortunately I am not able to mount the home_<user>.img file using the key in home_<user>.key.

If somebody could help with the magic incantation needed, it would save our weekend!

I suppose I need to know the encryption used, the key format and which passphrase is used

Any help?

Henning