[Cryptography] cheap sources of entropy

[Stephan Neuhaus]

On 30.01.2014 07:50, Stephan Neuhaus wrote:
> Taking Dan's original formulation of "N bit streams, at least one of
> which is truly unpredictable", a simple XOR would be enough.

Sorry, they have to be N *independent* streams.  A weaker precondition 
can surely be found, but I'm too lazy now to look for it.

Fun,

Stephan