Date: Sat, 26 Mar 2005 11:52:45 +0300
From: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Jeff Garzik <jgarzik@pobox.com>, Kim Phillips <kim.phillips@freescale.com>,
       Andrew Morton <akpm@osdl.org>, James Morris <jmorris@redhat.com>,
       linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org,
       cryptoapi@lists.logix.cz, David McCullough <davidm@snapgear.com>
Subject: Re: [PATCH] API for true Random Number Generators to add entropy
 (2.6.11)
Message-ID: <20050326115245.0a297934@zanzibar.2ka.mipt.ru>
In-Reply-To: <20050326003601.GB22930@gondor.apana.org.au>
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On Sat, 26 Mar 2005 11:36:02 +1100
Herbert Xu <herbert@gondor.apana.org.au> wrote:

> On Sat, Mar 26, 2005 at 03:47:33AM +0300, Evgeniy Polyakov wrote:
> > 
> > It looks like we all misunderstand each other - 
> > why do you think that if there will be kernel <-> kernel
> > RNG dataflow, then system will continuously spent all
> > it's time to produce that data?
> 
> It doesn't matter whether it's like that or not.
> 
> The point is if you do it in the kernel then either you'll have very
> coarse controls over the rate of data coming out of the hardware RNG,
> e.g., only on/off, or you'll have to put more code in to set the rate 
> appropriately.

It is not the problem absolutely - just sleep if pool is full.
It will limit usage but this is better than nothing.
 
> Either way it's a loss compared to doing it in user-space.
>
>
> -- 
> Visit Openswan at http://www.openswan.org/
> Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au>
> Home Page: http://gondor.apana.org.au/~herbert/
> PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt


	Evgeniy Polyakov

Only failure makes us experts. -- Theo de Raadt
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