Verify AES-NI use at runtime?

[Jeffrey Walton]

How does one verify use of AES-NI at runtime?

I know I can get 'capability' with:

crypto/evp/e_aes.c:#define AESNI_CAPABLE \
(OPENSSL_ia32cap_P[1]&(1<<(57-32)))

But grepping the sources for a runtime test does not produce anything
that looks useful:

$ grep -R -i AESNI *
and
$ grep -R ENGINE_* * | grep -i aes

The reason I ask is it looks like OpenSSL is not recognizing AES-NI
even though this i5 processor has both aesni and rdrand (according to
/proc/cpuinfo):

$ openssl engine -c -tt
(rdrand) Intel RDRAND engine
[RAND]
[ available ]
(dynamic) Dynamic engine loading support
[ unavailable ]

And the speed test shows no speedup with and without
OPENSSL_ia32cap=~0x200000200000000.

$ /usr/local/ssl/bin/openssl speed aes

If it matters, this is Fedora 20, and I had to jump through some hoops
to get the shared objects built correctly (namely, exporting
CFLAGS="-fPIC" and config'ing with 'shared').

Jeff
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[Dr. Stephen Henson]

Only the receommended EVP interface is supported with AES-NI, the "aes"
option uses low level AES routines which aren't accelerated by AES-NI.
Try it with the -evp option instead, for example:

openssl speed -evp aes-128-cbc

Steve.
--
Dr Stephen N. Henson. OpenSSL project core developer.
Commercial tech support now available see: http://www.openssl.org