Re: [PATCH 1/1] arm/crypto: Add optimized AES and SHA1 routines

2012/10/9 David McCullough [off-list ref]

Jivin Ruggero SUSELLA lays it down ...

quoted

Is this code compatible with GPL ?

To me it looks like it falls under the OpenSSL license which,
accordingly to Wikipedia, is not compatible with GPL.
Where am I wrong ?

The license on the 2 asm files from openssl the explicitly states:

        @
====================================================================
        @ Written by Andy Polyakov [off-list ref] for the OpenSSL
        @ project. The module is, however, dual licensed under OpenSSL and
        @ CRYPTOGAMS licenses depending on where you obtain it. For
further
        @ details see http://www.openssl.org/~appro/cryptogams/.
        @
====================================================================

If you follow the URL for the CRYPTOGAMS license and read the actual
license
at the end of the file it is very clearly dual licensed.  So I think it is
ok :-)

The FAQ at http://www.openssl.org/~appro/cryptogams/ says "If obtained
as a part of the OpenSSL Toolkit the modules are covered by the
OpenSSL license, while if obtained as a part of the CRYPTOGAMS
distribution - by the CRYPTOGAMS License" and that page only has link
to "CRYPTOGAMS version 0" which does not contain ARM implementations.

-Jussi

Cheers,
Davidm

quoted

-----Original Message-----
From: linux-crypto-owner@vger.kernel.org
[mailto:linux-crypto-owner@vger.kernel.org] On Behalf Of Herbert Xu
Sent: Thursday, September 06, 2012 10:20 PM
To: David McCullough
Cc: linux-kernel@vger.kernel.org; linux-crypto@vger.kernel.org
Subject: Re: [PATCH 1/1] arm/crypto: Add optimized AES and SHA1 routines

On Tue, Aug 07, 2012 at 02:01:03AM +0000, David McCullough wrote:

quoted

Add assembler versions of AES and SHA1 for ARM platforms.  This has
provided up to a 50% improvement in IPsec/TCP throughout for tunnels
using AES128/SHA1.

Platform   CPU SPeed    Endian   Before (bps)   After (bps)
Improvement

IXP425      533 MHz      big     11217042        15566294        ~38%
KS8695      166 MHz     little    3828549         5795373        ~51%

Signed-off-by: David McCullough <redacted>

Patch applied.  Thanks!
--
Email: Herbert Xu [off-list ref] Home Page:
http://gondor.apana.org.au/~herbert/
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David McCullough,      david_mccullough@mcafee.com,  Ph:+61 734352815
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