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From: Milan Broz <mbroz@redhat.com>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] Twofish 3-way
Date: Thu, 12 Jan 2012 16:22:59 +0100	[thread overview]
Message-ID: <4F0EFAD3.3090908@redhat.com> (raw)
In-Reply-To: <20120112150640.GA1918@fancy-poultry.org>

On 01/12/2012 04:06 PM, Heinz Diehl wrote:
> Hi,
>
> since kernel 3.2 there is a new parallelized variant of twofish
> available via
>
> CONFIG_CRYPTO_TWOFISH_X86_64_3WAY
>
> How can I use it with LUKS/dmcrypt? My current config contains the
> following:
>
> # CONFIG_CRYPTO_TWOFISH is not set
> CONFIG_CRYPTO_TWOFISH_COMMON=y
> CONFIG_CRYPTO_TWOFISH_X86_64=y
> CONFIG_CRYPTO_TWOFISH_X86_64_3WAY=y
>
> How should these options be set up properly?

You cannot set directly which version is used through dmcrypt interface,
(without patching kernel source) but cryptoAPI should detect the fastest
algorithm automatically.

For separate modules, force load just that module and unload all other
should perhaps work as well (before crypto device activation).

(see /proc/crypto and lsmod modules reference count to check which one
is really used)

Milan

  reply	other threads:[~2012-01-12 15:23 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-12 15:06 [dm-crypt] Twofish 3-way Heinz Diehl
2012-01-12 15:22 ` Milan Broz [this message]
2012-01-12 16:28   ` Arno Wagner
2012-01-12 18:19     ` Milan Broz
2012-01-15 15:05       ` Heinz Diehl

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