| From: | Doug McNaught <doug(at)wireboard(dot)com> |
|---|---|
| To: | Allan Engelhardt <allane(at)cybaea(dot)com> |
| Cc: | Bruno Wolff III <bruno(at)wolff(dot)to>, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: Re: Still wondering about random numbers... |
| Date: | 2001-08-08 14:00:54 |
| Message-ID: | m3vgjyirc9.fsf@belphigor.mcnaught.org |
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| Lists: | pgsql-general pgsql-patches |
Allan Engelhardt <allane(at)cybaea(dot)com> writes:
> "/dev/urandom is not really better than rand(3) or random(3) *in
> this situation* [i.e. when reads from /dev/random stalls and there
> is no system entropy]"
I would still disagree. The difference for crypto purposes between a
CRNG seeded with real entropy (/dev/urandom) and an LCG (libc
functions) is huge. The former is useful (with caveats); the latter
is trivially breakable.
-Doug
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