Hi! I stumbled upon pretty much the same issue [1] as you, but later learned that you shouldn't call the ksshaskpass program directly and that is actually specified in the README.Debian file. This package (therefor?) no longer provides a .desktop file.
[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=831600
signature.asc
Description: This is a digitally signed message part.
