linux-kernel - Re: comparison of the AF_ALG interface with the /dev/crypto

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 29 Aug 2011 12:09:19 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	nmav@...tls.org
Cc:	cryptodev-linux-devel@....org, linux-crypto@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: comparison of the AF_ALG interface with the /dev/crypto

From: Nikos Mavrogiannopoulos <nmav@...tls.org>
Date: Mon, 29 Aug 2011 09:32:19 +0200

> On 08/28/2011 10:35 PM, David Miller wrote:
> 
>>> The benchmark idea was to test the speed of initialization, encryption
>>> and deinitiation, as well as the encryption speed alone. These are the
>>> most common use cases of the frameworks (i.e. how they would be used
>>> by a cryptographic library).
>> Be sure to use splice() with AF_ALG for maximum performance.
>> For example, see the test program below.  You'll need to replace
>> "8192" with whatever the page size is on your cpu.
> 
> As I understand with splice you can encrypt only page aligned data
> that span a multiple of pages. This is a very uncommon case. My
> benchmark targets the generic case, i.e., the way this interface will
> be used in crypto libraries like gnutls.

Only the buffer you use must have these properties, you can use
whatever lengths you like.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/