it fully works to decrypt any ntfs enecrypted file both from Linux and Windows.
All you need to supply is your private key in form of a .prx file as exported
for example by the cypher command in XP SP2 or otherwise as exported by the
management console's certificate manager plugin.
bits to the needed 192 bits so it can be used for {en,de}cryption.
Note I couldn't face using the completely insane libgcrypt api so I used
openssl's libcrypto instead... Anyone feel free to swap once we have it
working.