discussed with Justin.
It was only really supported by the Botan provider, and
Botan dropped the idea in 1.6.0. Also, it never ensured
that the random number was actually secure.
svn path=/trunk/kdesupport/qca/; revision=620048
Covers conversion to lower precision value, and
unused code/variable.
I didn't remove the unused function from the botan
part - just noted it.
svn path=/trunk/kdesupport/qca/; revision=535288