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Re: [HACKERS] Query cancel and OOB data

From: Brett McCormick <brett(at)work(dot)chicken(dot)org>
To: ocie(at)paracel(dot)com
Cc: tgl(at)sss(dot)pgh(dot)pa(dot)us (Tom Lane), maillist(at)candle(dot)pha(dot)pa(dot)us, byronn(at)insightdist(dot)com, hackers(at)postgreSQL(dot)org
Subject: Re: [HACKERS] Query cancel and OOB data
Date: 1998-05-26 21:11:18
Message-ID: (view raw, whole thread or download thread mbox)
Lists: 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(at)paracel(dot)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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