Re: [HACKERS] Query cancel and OOB data - Mailing list pgsql-hackers

From Brett McCormick
Subject Re: [HACKERS] Query cancel and OOB data
Date
Msg-id 13675.12278.67171.468558@web0.speakeasy.org
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In response to Re: [HACKERS] Query cancel and OOB data  (ocie@paracel.com)
List pgsql-hackers
/dev/urandom performs a similar function without the wait.  of course
not all of the data is new, but it should still be pretty secure.

On Tue, 26 May 1998, at 14:00:57, ocie@paracel.com wrote:

> A neat feature of linux is that it has a kernel random number
> generator which is fed random data from interrupt times.  The only
> drawback is that this is sort of a "pool", so whn the pool is full,
> drawing 8 bytes from it is not a problem, but when the pool is
> drained, it can take some time to generate more data.  At any rate, it
> might be a good starting point for a postgres random number generator
> -- sample usage of shared memory and perform a hash on this.  From
> "applied cryptography":

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