* [dm-crypt] aes-ni
@ 2011-10-15 18:44 Lurkos
2011-10-15 19:26 ` Milan Broz
0 siblings, 1 reply; 4+ messages in thread
From: Lurkos @ 2011-10-15 18:44 UTC (permalink / raw)
To: dm-crypt
Does cryptsetup (with luks volumes) support AES-NI for newer Intel and
AMD powered computers?
--
Lurkos
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [dm-crypt] aes-ni
2011-10-15 18:44 [dm-crypt] aes-ni Lurkos
@ 2011-10-15 19:26 ` Milan Broz
2011-10-16 17:21 ` Lurkos
0 siblings, 1 reply; 4+ messages in thread
From: Milan Broz @ 2011-10-15 19:26 UTC (permalink / raw)
To: Lurkos; +Cc: dm-crypt
On 10/15/2011 08:44 PM, Lurkos wrote:
> Does cryptsetup (with luks volumes) support AES-NI for newer Intel and
> AMD powered computers?
yes. (in fact it is cryptoAPI which need proper module loaded, not dmcrypt)
aes-ni has higher priority, so it should be used automatically if available.
btw I just read this
http://www.phoronix.com/scan.php?page=article&item=intel_aesni_dmcrypt
Milan
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [dm-crypt] aes-ni
2011-10-15 19:26 ` Milan Broz
@ 2011-10-16 17:21 ` Lurkos
2011-10-16 18:56 ` Milan Broz
0 siblings, 1 reply; 4+ messages in thread
From: Lurkos @ 2011-10-16 17:21 UTC (permalink / raw)
To: dm-crypt
*Milan Broz* wrote:
>> Does cryptsetup (with luks volumes) support AES-NI for newer Intel and
>> AMD powered computers?
>
> yes. (in fact it is cryptoAPI which need proper module loaded, not dmcrypt)
> aes-ni has higher priority, so it should be used automatically if available.
>
> btw I just read this
> http://www.phoronix.com/scan.php?page=article&item=intel_aesni_dmcrypt
It seems it's just a matter of loading the "aesni_intel" module.
I cannot understand if there is a switch to select the module to be used
by the crytoAPI.
Maybe aesni_intel supersedes aes_x86_64 once loaded?
--
Lurkos
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [dm-crypt] aes-ni
2011-10-16 17:21 ` Lurkos
@ 2011-10-16 18:56 ` Milan Broz
0 siblings, 0 replies; 4+ messages in thread
From: Milan Broz @ 2011-10-16 18:56 UTC (permalink / raw)
To: Lurkos; +Cc: dm-crypt
On 10/16/2011 07:21 PM, Lurkos wrote:
> Maybe aesni_intel supersedes aes_x86_64 once loaded?
yes, see /proc/crypto when modules are loaded and check priorities of aes-ni
crypto driver (it should be autoloaded).
hw drivers have always higher priority. you can blacklist modules if needed though.
(there is no way to select modules through dmcrypt directly)
Milan
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2011-10-16 18:57 UTC | newest]
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2011-10-15 18:44 [dm-crypt] aes-ni Lurkos
2011-10-15 19:26 ` Milan Broz
2011-10-16 17:21 ` Lurkos
2011-10-16 18:56 ` Milan Broz
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