Geomasking- generate random points in a donut polygon

[DS_99]

Hi,

I am trying to protect the privacy of location data by performing random perturbation. I need to subtract two polygons from one another (one based on maximum distance of displacement and one based on minimum distance of displacement). What tools could I use to do this and produce a "donut polygon"?

Also is it possible to generate random points within the resulting donut polygon? 

Thanks

[Patric_Nordstrom]

Probably a scientific tool like QGIS or GRASS is better suited. GeoAnalytics doesn't produces areas from Intersect.

For points, rounding coordinates and maybe adding noise with rand() is probably good enough.

Thanks,

Patric