Their blog suggests otherwise:
but I suppose that just means they are referring to what is now known as Boxcryptor Classic (1.x).
Not realizing that, I installed encfs on my OpenSuSE system and mounted my Dropbox folder using it. Unfortunately, all I see is an empty directory. I guess I'm stuck, right? There is no way to view Boxcryptor (2.x)-encrypted files on Linux?