wk at gnupg
Nov 29, 2007, 2:56 AM
Post #1 of 1
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Hi,
the first steps for supporting the Padlock engine of VIA processors have
been taken. With the current SVN of libgcrypt the ACE engine is used
for AES-128. More stuff will follow.
Here are the benchmarks (milliseconds for 10^6 bytes):
ECB CBC CFB OFB CTR
=================================================================
Pentium M 1500 MHz:
AES 50 40 60 60 50 60 50 50 100 90
AES192 60 50 60 70 60 60 70 60 100 110
AES256 60 60 70 80 60 80 60 70 110 120
Via Nehemiah 600 MHz:
AES 60 60 110 100 90 90 90 80 280 300
AES192 420 430 480 480 460 470 460 460 660 660
AES256 490 500 540 550 520 530 520 530 730 730
I think this is quite an improvement. Due to the internal structure of
libgcrypt we can only encrypt one block at a time which seriously limits
the performance. This is something we need to tackle in the future.
Thanks to Nikos Mavrogiannopoulos for giving me access to his VIA box.
Shalom-Salam,
Werner
--
Die Gedanken sind frei. Auschnahme regelt ein Bundeschgesetz.
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