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Subject: Re: [PATCH 1/5] PM / hibernate: Create snapshot keys handler
To:     "Lee, Chun-Yi" <joeyli.kernel@gmail.com>,
        "Rafael J . Wysocki" <rjw@rjwysocki.net>,
        Pavel Machek <pavel@ucw.cz>
Cc:     linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
        "Lee, Chun-Yi" <jlee@suse.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
        Chen Yu <yu.c.chen@intel.com>,
        Oliver Neukum <oneukum@suse.com>,
        Ryan Chen <yu.chen.surf@gmail.com>,
        David Howells <dhowells@redhat.com>,
        Giovanni Gherdovich <ggherdovich@suse.cz>
References: <20180912142337.21955-1-jlee@suse.com>
 <20180912142337.21955-2-jlee@suse.com>
From:   Randy Dunlap <rdunlap@infradead.org>
Message-ID: <b3dd8655-c394-ed62-1efc-8295a95bb7fb@infradead.org>
Date:   Wed, 12 Sep 2018 09:27:27 -0700
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Hi,

On 9/12/18 7:23 AM, Lee, Chun-Yi wrote:
> diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
> index 3a6c2f87699e..7c5c30149dbc 100644
> --- a/kernel/power/Kconfig
> +++ b/kernel/power/Kconfig
> @@ -76,6 +76,20 @@ config HIBERNATION
>  
>  	  For more information take a look at <file:Documentation/power/swsusp.txt>.
>  
> +config HIBERNATION_ENC_AUTH
> + 	bool "Hibernation encryption and authentication"
> + 	depends on HIBERNATION
> + 	depends on TRUSTED_KEYS
> +	select CRYPTO_AES
> + 	select CRYPTO_HMAC
> + 	select CRYPTO_SHA512
> + 	help
> +	  This option will encrypt and authenticate the memory snapshot image
> +	  of hibernation. It prevents that the snapshot image be arbitrary

	                                                         arbitrarily

> +	  modified. User can use TPMs trusted key or user defined key as the

	            The user
or	            A user can use the TPM's trusted key

> +	  master key of hibernation. The TPM trusted key depends on TPM. The
> +	  security of user defined key relies on user space.
> +


-- 
~Randy