[openssl-users] compared performances on Mac OS X 10.6.8
patpro at patpro.net
patpro at patpro.net
Mon May 11 09:24:10 UTC 2015
On 11 mai 2015, at 07:45, Viktor Dukhovni <openssl-users at dukhovni.org> wrote:
> On Mon, May 11, 2015 at 07:24:10AM +0200, Patrick Proniewski wrote:
>
>> I've compiled OpenSSL 1.0.2a on Mac OS X 10.6.8, and used `openssl
>> speed` to compare performances with stock OpenSSL (0.9.8). In many
>> tests, 1.0.2a is a bit faster, or as fast as 0.9.8y, but on the 6
>> AES tests, the old one is almost twice as fast as the new one:
>
> Use "openssl speed -evp". Then if your hardware has AES-NI, it
> will be faster in 1.0.2. Otherwise, the slowdown is expected.
> The software-only AES in 1.0.x is constant-time, and avoids
> timing side-channel attacks. The 0.9.8 version is not
> constant time (faster, but less secure).
Thank you for this explanation. The evp flag works great on my hardware:
$ apps/openssl speed -evp aes-256-cbc
../..
aes-256-cbc 171795.47k 200081.86k 208523.35k 211620.52k 210927.62k
$ apps/openssl speed aes-256-cbc
../..
aes-256 cbc 68905.90k 73930.92k 75199.15k 75868.16k 76136.45k
regards,
patpro
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