A bit of Googling (quite a bit, actually) tells me that it's a File Safe encrypted archive created by Protector Suite QL. It seems to simply be an encrypted folder that is only accessible by fingerprint verification (or a backup password created at the same time as the archive).

There is a whole lot of information about it in <a href="http://www.upek.com/pdf/PSQL5.6-UsersGuide-English.pdf">this PDF</a>.

If you don't have the right fingerprint or password then you should probably hope that this isn't a File Safe archive, because I doubt you'll be getting the files out (without some serious and probably costly tech support from them).