June 10, 2014

Openssl AES-NI Test

For OpenSSL versions after 1.0.1, AES-NI should be buit-in. This is how to test it:

Command A (with AES-NI) = openssl speed -elapsed -evp aes-128-cbc
Command B (Without AES-NI) = OPENSSL_ia32cap="~0x200000200000000" openssl speed -elapsed -evp aes-128-cbc

bit #33 denoting availability of PCLMULQDQ instruction (for AES-GCM computation);
bit #57 denoting AES-NI instruction set extension;

Command   16 bytes     64 bytes     256 bytes    1024 bytes   8192 bytes
A         796435.32k   845155.61k   852750.59k   860752.55k   865828.86k
B         393740.06k   431465.71k   438168.23k   443452.42k   446458.54k


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