Basicly I take a random set of 2d points(seed), used as control points for a number of concataned Bezier curves, this makes up my space. The generated space of the curves is alot greater than the set of initial points. When I wish to generate binary output I go through the space, and because of the formula using Bernstein polynomials, each point of the curve is generated with a number of decimals, from wich I extract the raw binary and concatenate a result. It would seem that the binary of the decimals behind the x,y of each point don't give away any indication of the curve.
I keep an index to know how far along the space I've traveled so I don't use the same data again. The original points that will generate the space are random.
I've tested the output with sts. from NIST and it passed everything, but I was told that is hardly enough for a viable PRG. Then I got redirected to stackexchange :)
ps: do you guys know any other tests for a prg?