VIA C3 AES code ?

Damian Gerow dgerow at
Mon Aug 9 20:33:05 PDT 2004

Thus spake Will Andrews (will at [09/08/04 15:02]:
: On Mon, Aug 09, 2004 at 07:14:45PM +0100, Mark Murray wrote:
: > Yup. It means that if you ask OpenSSL for AES encryptionon a C3 Nehemiah,
: > you get the full HW speed.
: I must be doing something wrong.

I believe that not all Nehemiah's support AES -- only those with Stepping 8
and higher, IIRC.

Yes, it's true.  Here's Google's HTML version:


of the VIA ACE programming guide:


If you're not Stepping 8 or higher, you only have the (P)RNG.

  - Damian

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