From: Mimi Zohar <zohar@linux.ibm.com>
To: James Bottomley <James.Bottomley@HansenPartnership.com>,
Jordan Hand <Jordan.Hand@microsoft.com>,
"linux-integrity@vger.kernel.org"
<linux-integrity@vger.kernel.org>
Subject: Re: [DISCUSSION] IMA Signature Measurements
Date: Wed, 27 Feb 2019 17:49:50 -0500 [thread overview]
Message-ID: <1551307790.10911.106.camel@linux.ibm.com> (raw)
In-Reply-To: <1551306168.3105.22.camel@HansenPartnership.com>
On Wed, 2019-02-27 at 14:22 -0800, James Bottomley wrote:
> On Wed, 2019-02-27 at 22:02 +0000, Jordan Hand wrote:
> Um, this is already upstream. The slight problem is that kernel
> bzImages are arch specific, so the file you're looking for is
>
> arch/x86/kernel/kexec-bzimage64.c
>
> You'll find the signature verifier for x86 bzImages is the PE one. The
> current problem is more that the kernel keyring doesn't trust the
> secure boot keys, so the issue isn't with the signature format its with
> keyring trust.
With CONFIG_INTEGRITY_PLATFORM_KEYRING enabled, the pre-boot keys are
loaded onto the new "platform" keyring. Queued for v5.1 are two
patches which allow verifying the PE signed kernel image based on keys
in the platform keyring.
Mimi
next prev parent reply other threads:[~2019-02-27 22:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-27 22:02 [DISCUSSION] IMA Signature Measurements Jordan Hand
2019-02-27 22:22 ` James Bottomley
2019-02-27 22:49 ` Mimi Zohar [this message]
2019-02-27 22:40 ` Mimi Zohar
2019-02-28 0:00 ` Jordan Hand
2019-02-28 1:39 ` Thiago Jung Bauermann
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