From: Mimi Zohar <zohar@linux.ibm.com>
To: Lakshmi Ramasubramanian <nramas@linux.microsoft.com>,
Nayna Jain <nayna@linux.ibm.com>,
linuxppc-dev@ozlabs.org, linux-efi@vger.kernel.org,
linux-integrity@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
Michael Ellerman <mpe@ellerman.id.au>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Jeremy Kerr <jk@ozlabs.org>,
Matthew Garret <matthew.garret@nebula.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Claudio Carvalho <cclaudio@linux.ibm.com>,
George Wilson <gcwilson@linux.ibm.com>,
Elaine Palmer <erpalmer@us.ibm.com>,
Eric Ricther <erichte@linux.ibm.com>,
"Oliver O'Halloran" <oohall@gmail.com>,
Prakhar Srivastava <prsriva02@gmail.com>
Subject: Re: [PATCH v9 5/8] ima: make process_buffer_measurement() generic
Date: Wed, 30 Oct 2019 12:35:52 -0400 [thread overview]
Message-ID: <1572453352.5707.3.camel@linux.ibm.com> (raw)
In-Reply-To: <6c94bfc0-d3ce-202b-6927-f664ee513fa9@linux.microsoft.com>
On Wed, 2019-10-30 at 08:22 -0700, Lakshmi Ramasubramanian wrote:
> On 10/23/19 8:47 PM, Nayna Jain wrote:
>
> Hi Nayna,
>
> > process_buffer_measurement() is limited to measuring the kexec boot
> > command line. This patch makes process_buffer_measurement() more
> > generic, allowing it to measure other types of buffer data (e.g.
> > blacklisted binary hashes or key hashes).
>
> Now that process_buffer_measurement() is being made generic to measure
> any buffer, it would be good to add a tag to indicate what type of
> buffer is being measured.
>
> For example, if the buffer is kexec command line the log could look like:
>
> "kexec_cmdline: <command line data>"
>
> Similarly, if the buffer is blacklisted binary hash:
>
> "blacklist hash: <data>".
>
> If the buffer is key hash:
>
> "<name of the keyring>: key data".
>
> This would greatly help the consumer of the IMA log to know the type of
> data represented in each IMA log entry.
Both the existing kexec command line and the new blacklist buffer
measurement pass that information in the eventname. The [PATCH 7/8]
"ima: check against blacklisted hashes for files with modsig" patch
description includes an example.
Mimi
next prev parent reply other threads:[~2019-10-30 16:36 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-24 3:47 [PATCH v9 0/8] powerpc: Enabling IMA arch specific secure boot policies Nayna Jain
2019-10-24 3:47 ` [PATCH v9 1/8] powerpc: detect the secure boot mode of the system Nayna Jain
2019-10-24 17:26 ` Lakshmi Ramasubramanian
2019-10-25 16:49 ` Nayna Jain
2019-10-24 3:47 ` [PATCH v9 2/8] powerpc/ima: add support to initialize ima policy rules Nayna Jain
2019-10-24 17:35 ` Lakshmi Ramasubramanian
2019-10-25 17:02 ` Nayna Jain
2019-10-25 18:03 ` Lakshmi Ramasubramanian
2019-10-28 23:42 ` Michael Ellerman
2019-10-26 23:52 ` Mimi Zohar
2019-10-28 11:54 ` Mimi Zohar
2019-10-24 3:47 ` [PATCH v9 3/8] powerpc: detect the trusted boot state of the system Nayna Jain
2019-10-24 17:38 ` Lakshmi Ramasubramanian
2019-10-25 16:50 ` Nayna Jain
2019-10-24 3:47 ` [PATCH v9 4/8] powerpc/ima: define trusted boot policy Nayna Jain
2019-10-24 17:40 ` Lakshmi Ramasubramanian
2019-10-24 3:47 ` [PATCH v9 5/8] ima: make process_buffer_measurement() generic Nayna Jain
2019-10-24 15:20 ` Lakshmi Ramasubramanian
2019-10-25 17:24 ` Nayna Jain
2019-10-25 17:32 ` Lakshmi Ramasubramanian
2019-10-27 0:13 ` Mimi Zohar
2019-10-30 15:22 ` Lakshmi Ramasubramanian
2019-10-30 16:35 ` Mimi Zohar [this message]
2019-10-24 3:47 ` [PATCH v9 6/8] certs: add wrapper function to check blacklisted binary hash Nayna Jain
2019-10-24 3:47 ` [PATCH v9 7/8] ima: check against blacklisted hashes for files with modsig Nayna Jain
2019-10-24 17:48 ` Lakshmi Ramasubramanian
2019-10-25 17:36 ` Nayna Jain
2019-10-24 3:47 ` [PATCH v9 8/8] powerpc/ima: update ima arch policy to check for blacklist Nayna Jain
2019-10-28 12:10 ` [PATCH v9 0/8] powerpc: Enabling IMA arch specific secure boot policies Mimi Zohar
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