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Is “double hashing” a password less secure than just hashing it once?
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We know of secure ways of iterating a hash. In fact:
$hash = $input;
$i = 10000;
do {
$hash = hash($input . $hash);
} while ($i-- > 0);
Is typically safe.
Now, to go into why we would want to hash it, let's analyze the entropy movement.
A hash takes in the infinite set: S(∞) and produces a...
How to write a scalable Tcp/Ip based server
...l core system, 4GB of RAM), the response time for 100 bytes (1 packet) and 10000 bytes (3 packets) stayed the same throughout the whole user load curve.
– esac
May 22 '09 at 5:55
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