hi, eer..I think we need a defenition of an Rng & Prng that every 1 should agree on.
would this help? RNG & PRNG ---------------- 1:>A RNG has an infinite period where as a PRNG has a defenite period after which the sequence will repeat. Atmospheric noise,Radiation decay are examples of RNG's.(Difference) 2:>An RNG & PRNG should pass a series of radomness tests. (Similarity) 3:>For the same set of input parameters,a RNG always give a different output. A PRNG always gives the same set of outputs for the same input parameters (Difference) would any 1 also like 2 review http://www.ircsuper.net/~neo/prng.html thanx. Regards Data. --- Jim Choate <[EMAIL PROTECTED]> wrote: > > On Thu, 11 Jul 2002, Sandy Harris wrote: > > > No. Any good algorithm should produce output that > looks /exactly/ > > like random noise, hence they should all look like > each other. > > Wrong, not all RNG's have the same statistical > output. There is -nothing- > in the requirement for a RNG that requires it > (radiation sources are not > equiprobable for example, they're much more 'zero' > than 'one'). There may > be boundary conditions on crypto applications that > require equiprobable > distributions with respect to characters or strings > (that 'k' thing > again, see Knuth). But that doesn't apply to -all- > RNG's or their > applications by a long shot. > > Also, 'random noise' is redundent. 'Noise' is by > -definition- random, > otherwise it wouldn't be noise, it would have a > correlation factor, once > you found it you could remove the noise (assuming of > course its > computationaly tractible). > > > -- > > ____________________________________________________________________ > > When I die, I would like to be born > again as me. > > Hugh > Hefner > [EMAIL PROTECTED] > www.ssz.com > [EMAIL PROTECTED] > www.open-forge.org > > > -------------------------------------------------------------------- > > > > __________________________________________________ Do You Yahoo!? Yahoo! Autos - Get free new car price quotes http://autos.yahoo.com
