From: Jarkko Sakkinen <jarkko@kernel.org>
To: Ahmad Fatoum <a.fatoum@pengutronix.de>
Cc: "Horia Geantă" <horia.geanta@nxp.com>,
"Aymen Sghaier" <aymen.sghaier@nxp.com>,
"Herbert Xu" <herbert@gondor.apana.org.au>,
"David S. Miller" <davem@davemloft.net>,
kernel@pengutronix.de, "David Gstir" <david@sigma-star.at>,
"Tim Harvey" <tharvey@gateworks.com>,
"James Bottomley" <jejb@linux.ibm.com>,
"Mimi Zohar" <zohar@linux.ibm.com>,
"David Howells" <dhowells@redhat.com>,
"James Morris" <jmorris@namei.org>,
"Eric Biggers" <ebiggers@kernel.org>,
"Serge E. Hallyn" <serge@hallyn.com>,
"Udit Agarwal" <udit.agarwal@nxp.com>,
"Jan Luebbe" <j.luebbe@pengutronix.de>,
"Richard Weinberger" <richard@nod.at>,
"Franck LENORMAND" <franck.lenormand@nxp.com>,
"Sumit Garg" <sumit.garg@linaro.org>,
linux-integrity@vger.kernel.org, keyrings@vger.kernel.org,
linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-security-module@vger.kernel.org
Subject: Re: [PATCH v4 4/5] crypto: caam - add in-kernel interface for blob generator
Date: Sun, 5 Dec 2021 02:18:40 +0200 [thread overview]
Message-ID: <YawFYFV8xGIPZvUJ@iki.fi> (raw)
In-Reply-To: <3ea6e5c37559eddfdc51f26c4dff0abbbc894839.1633946449.git-series.a.fatoum@pengutronix.de>
On Mon, Oct 11, 2021 at 12:02:37PM +0200, Ahmad Fatoum wrote:
> The CAAM can be used to protect user-defined data across system reboot:
>
> - When the system is fused and boots into secure state, the master
> key is a unique never-disclosed device-specific key
> - random key is encrypted by key derived from master key
> - data is encrypted using the random key
> - encrypted data and its encrypted random key are stored alongside
> - This blob can now be safely stored in non-volatile memory
>
> On next power-on:
> - blob is loaded into CAAM
> - CAAM writes decrypted data either into memory or key register
>
> Add functions to realize encrypting and decrypting into memory alongside
> the CAAM driver.
>
> They will be used in a later commit as a source for the trusted key
> seal/unseal mechanism.
>
> Reviewed-by: David Gstir <david@sigma-star.at>
> Tested-By: Tim Harvey <tharvey@gateworks.com>
> Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
> Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
What is CAAM? This is missing.
/Jarkko
next prev parent reply other threads:[~2021-12-05 0:18 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-11 10:02 [PATCH v4 0/5] KEYS: trusted: Introduce support for NXP CAAM-based trusted keys Ahmad Fatoum
2021-10-11 10:02 ` [PATCH v4 1/5] KEYS: trusted: allow use of TEE as backend without TCG_TPM support Ahmad Fatoum
2021-12-05 0:12 ` Jarkko Sakkinen
2021-10-11 10:02 ` [PATCH v4 2/5] KEYS: trusted: allow users to use kernel RNG for key material Ahmad Fatoum
2021-12-05 0:16 ` Jarkko Sakkinen
2021-12-13 10:29 ` Ahmad Fatoum
2021-12-23 7:25 ` [EXT] " Pankaj Gupta
2021-10-11 10:02 ` [PATCH v4 3/5] KEYS: trusted: allow trust sources " Ahmad Fatoum
2021-10-11 10:02 ` [PATCH v4 4/5] crypto: caam - add in-kernel interface for blob generator Ahmad Fatoum
2021-11-01 8:00 ` Ahmad Fatoum
2021-11-24 7:48 ` Ahmad Fatoum
2021-12-05 0:18 ` Jarkko Sakkinen [this message]
2021-12-13 10:34 ` Ahmad Fatoum
2021-12-23 7:20 ` [EXT] " Pankaj Gupta (OSS)
2021-10-11 10:02 ` [PATCH v4 5/5] KEYS: trusted: Introduce support for NXP CAAM-based trusted keys Ahmad Fatoum
2021-11-24 7:53 ` Ahmad Fatoum
2021-12-13 11:00 ` Matthias Schiffer
2021-12-13 11:36 ` Ahmad Fatoum
2021-12-13 13:40 ` Matthias Schiffer
2022-02-22 4:30 ` [EXT] " Pankaj Gupta
2022-02-22 11:24 ` Ahmad Fatoum
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