Ivan Sergio Borgonovo wrote:

    r2:=l1 # ((((1366.0*r1+150889)%714025)/714025.0)*32767)::int;
-- but what about this? where does it come from?

This function:
(1366.0*r1+150889)%714025
implements a known method to get random numbers. I think it comes from "Numerical recipes" by William Press. Note that the algorithm is not tied to that function, it could be replaced by something else (especially one that involves a private key), but it has to be carefully chosen or the end result won't look so random.

Best regards,
--
Daniel
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