combining entropy

Ben Laurie benl at
Fri Oct 24 09:14:27 EDT 2008

On Mon, Sep 29, 2008 at 1:13 PM, IanG <iang at> 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?

Surely not. Consider N pools each of size 1 bit. Clearly you can do
better than the 1 bit your suggestion would yield.

More concretely, concatenation would seem better than XOR.

The Cryptography Mailing List
Unsubscribe by sending "unsubscribe cryptography" to majordomo at

More information about the cryptography mailing list