about:

"qca - GET RID OF IT? Only used by meepasswords"

sound like a bad idea to me. There definitivly needs to be a Qt/C++ based crypto library in mer.

It also was a core lib in harmattan:

http://harmattan-dev.nokia.com/docs/...9jcy9saWJxY2Ey

and with some tweaking it should be possible make Qt5 build and RPM based on this tip:

http://qt-project.org/forums/viewthread/26157