4

I am running Ubuntu 16.04.1 LTS, I checked that my processor does support AES-NI acceleration on all CPUs:

johndoe@mycomputer:~$ grep -m1 -o aes /proc/cpuinfo
aes
johndoe@mycomputer:~$ grep -o aes /proc/cpuinfo | wc -l
4
johndoe@mycomputer:~$ lscpu | grep '^CPU(s):'
CPU(s):                4

How can I check that openssl using AES-NI?

Thank you, Luckyrings

5

I found the answer myself.

To test if openssl is using AES-NI I found following information. You can't see after compiling that AES-NI is available for openssl, but you can perform performance tests with and without that feature.

Speed test with default settings:

openssl speed -elapsed -evp aes-128-cbc

Speed test with explicit disabled AES-NI feature:

OPENSSL_ia32cap="~0x200000200000000" openssl speed -elapsed -evp aes-128-cbc

The result the first line will run faster (almost double on my i7 cpu). So that conclusion is that AES-NI is used by default for openssl.

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