linux-kernel - Re: [PATCH 3/4] dm crypt: switch to EBOIV crypto API template

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Message-ID: <20201026175231.GG858@sol.localdomain>
Date:   Mon, 26 Oct 2020 10:52:31 -0700
From:   Eric Biggers <ebiggers@...nel.org>
To:     Gilad Ben-Yossef <gilad@...yossef.com>
Cc:     Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Alasdair Kergon <agk@...hat.com>,
        Mike Snitzer <snitzer@...hat.com>, dm-devel@...hat.com,
        Song Liu <song@...nel.org>, Ofir Drang <ofir.drang@....com>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-raid@...r.kernel.org
Subject: Re: [PATCH 3/4] dm crypt: switch to EBOIV crypto API template

On Mon, Oct 26, 2020 at 03:04:46PM +0200, Gilad Ben-Yossef wrote:
> Replace the explicit EBOIV handling in the dm-crypt driver with calls
> into the crypto API, which now possesses the capability to perform
> this processing within the crypto subsystem.
> 
> Signed-off-by: Gilad Ben-Yossef <gilad@...yossef.com>
> 
> ---
>  drivers/md/Kconfig    |  1 +
>  drivers/md/dm-crypt.c | 61 ++++++++++++++-----------------------------
>  2 files changed, 20 insertions(+), 42 deletions(-)
> 
> diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig
> index 30ba3573626c..ca6e56a72281 100644
> --- a/drivers/md/Kconfig
> +++ b/drivers/md/Kconfig
> @@ -273,6 +273,7 @@ config DM_CRYPT
>  	select CRYPTO
>  	select CRYPTO_CBC
>  	select CRYPTO_ESSIV
> +	select CRYPTO_EBOIV
>  	help
>  	  This device-mapper target allows you to create a device that
>  	  transparently encrypts the data on it. You'll need to activate

Can CRYPTO_EBOIV please not be selected by default?  If someone really wants
Bitlocker compatibility support, they can select this option themselves.

- Eric