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
prev parent reply other threads:[~2026-06-01 9:39 UTC|newest]
Thread overview: 2+ 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]
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