Curious - what are your complaints on these programs? My main one is that they are slow to create archives and rsbep only does error decoding, not erasure. I'm working on an alternative tool that is much faster, but curious if you have any other feedback.
There's par2 (and its offsprings MultiPar and QuickPar), there's rsbep, there's pyFileFixity.
All have their problems why you probably won't "shield" your files with them (I don't, although I worry).