linux-kernel - Re: [PATCH v7 3/5] KEYS: Call the IMA hook to measure keys

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Message-ID: <24262d82-c90b-b64d-f237-9ef038f38d0e@linux.microsoft.com>
Date:   Thu, 14 Nov 2019 10:24:18 -0800
From:   Lakshmi Ramasubramanian <nramas@...ux.microsoft.com>
To:     Mimi Zohar <zohar@...ux.ibm.com>, dhowells@...hat.com,
        matthewgarrett@...gle.com, sashal@...nel.org,
        jamorris@...ux.microsoft.com, linux-integrity@...r.kernel.org,
        linux-security-module@...r.kernel.org, keyrings@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 3/5] KEYS: Call the IMA hook to measure keys

On 11/14/2019 6:54 AM, Mimi Zohar wrote:

> No need to Cc David Howells on the entire patch set.  Just Cc him,
> here, after your tag.
ok

> With this patch, keys are now being measured.  With the boot command
> line, we can verify the measurement entry against /proc/cmdline.  How
> can the key measurement entry be verified?  Please include that
> information, here, in this patch description.

Glad you could verify measurement of keys. Thanks a lot for trying it.

Will add information on testing\validating the feature.

> Also, can the key data, now included in the measurement list, be used
> to verify signatures in the ima-sig or ima-modsig templates?  Is there
> a way of correlating a signature with a key?  Perhaps include a
> kselftest as an example.
> 
> Mimi

I am not familiar with kselftest. Will take a look and see if it'd be 
possible to correlate a signature with a key.

thanks,
  -lakshmi