[Moderator's note: top posting is not tasteful. --Perry]

I think it depends on what you mean by "N pools of entropy".

`Are you assuming that one of these is sources is (pseudo)random, but you`

`don't know which one? Are you assuming independence of these difference`

`sources? If both these assumptions hold, then XOR will do the trick.`

`If your only assumption is that one of the sources has high min-entropy`

`(but may not necessarily be uniform), or if the independence assumption`

`does not hold, then you may need to use some form of randomness`

`extraction.`

On Mon, 29 Sep 2008, IanG wrote:

If I have N pools of entropy (all same size X) and I pool them together with XOR, is that as good as it gets? My assumptions are: * I trust no single source of Random Numbers. * I trust at least one source of all the sources. * no particular difficulty with lossy combination. iang

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