Re: Unique number generation
paul_at_atom.sbrk.co.uk
Date: 04/29/05
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Date: Fri, 29 Apr 2005 12:48:30 GMT
In article <d4t6cv$lsg$1@orkan.itea.ntnu.no>, Kristian Gjøsteen wrote:
><paul@atom.sbrk.co.uk> wrote:
>>Any ideas?
>
> Use a block cipher: value = E_k(sequence number).
Doh. That is a little too obvious... Ok, I also should'be said that the
output value needs to be constrained within a certain range, so was
thinking of a hash. However, that's not really possible without the risk
of collisions. Ok, looks like I need to constrain my inputs.
Cheers,
Paul
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