5x speedup for AES using SSE5?

Paul Crowley paul at ciphergoth.org
Sat Aug 23 09:00:44 EDT 2008


http://www.ddj.com/hpc-high-performance-computing/201803067

In the above Dr Dobb's article from a little over a year ago, AMD Senior 
Fellow Leendert vanDoorn states "the Advanced Encryption Standard (AES) 
algorithm gets a factor of 5 performance improvement by using the new 
SSE5 extension".  However, glancing through the SSE5 specification, I 
can't see at all how such a dramatic speedup might be achieved.  Does 
anyone know any more, or can anyone see more than I can in the spec?

http://developer.amd.com/cpu/SSE5/Pages/default.aspx
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