From: Krzysztof Kozlowski <krzk@kernel.org>
To: Eric Biggers <ebiggers@kernel.org>,
linux-crypto@vger.kernel.org,
Herbert Xu <herbert@gondor.apana.org.au>
Cc: linux-samsung-soc@vger.kernel.org,
Alim Akhtar <alim.akhtar@samsung.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] crypto: exynos-rng - Remove exynos-rng driver
Date: Mon, 1 Jun 2026 11:39:46 +0200 [thread overview]
Message-ID: <e1706d59-2731-4aab-979a-e2e2927caad1@kernel.org> (raw)
In-Reply-To: <20260531175932.32171-1-ebiggers@kernel.org>
On 31/05/2026 19:59, Eric Biggers wrote:
> This driver has no purpose. It doesn't feed into the Linux RNG, nor
> does it implement the hwrng interface. It is accessible only via the
> "rng" algorithm type of AF_ALG, which isn't used in practice. Everyone
> uses either the Linux RNG, or rarely /dev/hwrng.
>
> Moreover, this is a PRNG whose only source of entropy is the 160-bit
> seed the user passes in. So this can be used only by a user who already
> has a source of cryptographically secure random numbers, such as
> /dev/random. Which they can, and do, just use in the first place.
I don't know nowadays about any real world usage of this driver, so fine
by me:
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Best regards,
Krzysztof
next prev parent reply other threads:[~2026-06-01 9:39 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-31 17:59 [PATCH] crypto: exynos-rng - Remove exynos-rng driver Eric Biggers
2026-06-01 9:39 ` Krzysztof Kozlowski [this message]
2026-06-10 14:46 ` Peter Griffin
2026-06-10 18:39 ` Eric Biggers
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=e1706d59-2731-4aab-979a-e2e2927caad1@kernel.org \
--to=krzk@kernel.org \
--cc=alim.akhtar@samsung.com \
--cc=ebiggers@kernel.org \
--cc=herbert@gondor.apana.org.au \
--cc=linux-crypto@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-samsung-soc@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.