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From: Jarkko Sakkinen <jarkko@kernel.org>
To: Stefan Berger <stefanb@linux.ibm.com>
Cc: keyrings@vger.kernel.org, dhowells@redhat.com,
	zohar@linux.ibm.com, nayna@linux.ibm.com,
	linux-integrity@vger.kernel.org,
	linux-security-module@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/2] Add support for ECDSA-signed kernel modules
Date: Wed, 7 Apr 2021 18:53:31 +0300	[thread overview]
Message-ID: <YG3Ve9CR0zZE+tUu@kernel.org> (raw)
In-Reply-To: <20210406185340.1079403-1-stefanb@linux.ibm.com>

On Tue, Apr 06, 2021 at 02:53:38PM -0400, Stefan Berger wrote:
> This series adds support for ECDSA-signed kernel modules.
> 
> The first patch in this series attempts to address the issue where a
> developer created an ECDSA key for signing modules and then falls back
> to compiling an older version of the kernel that does not support
> ECDSA keys. In this case this patch would delete that ECDSA key if it is
> in certs/signing_key.pem and trigger the creation of an RSA key. However,
> for this to work this patch would have to be applied to previous versions
> of the kernel but would also only work for the developer if he/she used a
> stable version of the kernel to which this patch was applied. So whether
> this patch actually achieves the wanted effect is not always guaranteed.

Just wondering why the key needs to be removed in the fallback.

/Jarkko

  parent reply	other threads:[~2021-04-07 15:53 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-06 18:53 [PATCH 0/2] Add support for ECDSA-signed kernel modules Stefan Berger
2021-04-06 18:53 ` [PATCH 1/2] certs: Trigger recreation of module signing key if it's not an RSA key Stefan Berger
2021-04-06 18:53 ` [PATCH 2/2] certs: Add support for using elliptic curve keys for signing modules Stefan Berger
2021-04-07 15:53 ` Jarkko Sakkinen [this message]
2021-04-07 16:10   ` [PATCH 0/2] Add support for ECDSA-signed kernel modules Mimi Zohar
2021-04-07 17:53     ` Stefan Berger
2021-04-07 20:15       ` Jarkko Sakkinen

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