From: Stephan Mueller <smueller@chronox.de>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: linux-crypto@vger.kernel.org
Subject: Re: [PATCH 3/4] crypto: drbg - replace spinlock with mutex
Date: Mon, 20 Apr 2015 02:51:30 +0200 [thread overview]
Message-ID: <1710531.pgBfBsv2an@tauon> (raw)
In-Reply-To: <20150420004855.GA16974@gondor.apana.org.au>
Am Montag, 20. April 2015, 08:48:55 schrieb Herbert Xu:
Hi Herbert,
>On Mon, Apr 20, 2015 at 02:45:02AM +0200, Stephan Mueller wrote:
>> I do not want to deviate from the kernel crypto API by adding some
>> additional wrapper. But what we can do is to leave the DRBG unseeded
>> during alloc time. As long as the DRBG is unseeded, it will return EAGAIN
>> to any request for random numbers, forcing the caller to use
>> crypto_rng_reset to activate the DRBG.
>>
>> When the DRBG receives a reset, it will always obtain the seed and treat
>> any
>> user-provided data as personalization string / additional data.
>
>That's exactly what I was suggesting. I already have two patches
>that I will post once I finish testing.
Ok, I will wait then for your patches before I send out my patch set for the
seeding revamp.
>
>Cheers,
Ciao
Stephan
next prev parent reply other threads:[~2015-04-20 0:51 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-17 12:53 [PATCH 0/4] crypto: drbg - revamp locking Stephan Mueller
2015-04-17 12:54 ` [PATCH 1/4] cryoto: drbg - clear all temporary memory Stephan Mueller
2015-04-18 10:59 ` Herbert Xu
2015-04-17 12:54 ` [PATCH 2/4] crypto: drbg - do not create shadow copy Stephan Mueller
2015-04-18 10:49 ` Herbert Xu
2015-04-18 12:51 ` Stephan Mueller
2015-04-17 12:55 ` [PATCH 3/4] crypto: drbg - replace spinlock with mutex Stephan Mueller
2015-04-18 10:55 ` Herbert Xu
2015-04-18 11:35 ` Stephan Mueller
2015-04-19 5:48 ` Herbert Xu
2015-04-19 15:37 ` Stephan Mueller
2015-04-20 0:27 ` Herbert Xu
2015-04-20 0:45 ` Stephan Mueller
2015-04-20 0:48 ` Herbert Xu
2015-04-20 0:51 ` Stephan Mueller [this message]
2015-04-17 12:56 ` [PATCH 4/4] crypto: drbg - leave cipher handles operational Stephan Mueller
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