Re: Via Eden C7 padlock benchmarks
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Jari Ruusu schrieb:
torsten.st@xxxxxxx, Could you check that the VIA C7 processor was properly detected by loop-AES code? If it was properly detected, then there should be "loop: padlock hardware AES enabled" message in your kernel log. You can check that using command "dmesg | grep loop" or "grep loop /var/log/messages". Padlock enabled loop includes both software AES and padlock AES implementations. If padlock detection fails, then code uses software AES implementation.
the kernel prints these lines: loop: padlock hardware AES enabled loop: AES key scrubbing enabled loop: loaded (max 8 devices) The C7 would not be able to achieve 55 MB/s with a software implementation. >> I ask this because when loop-AES padlock code was written, I only had older
> VIA C3 processor programming manual. loop-AES code follows older VIA C3 > padlock detection instructions. When C7 was new, a VIA representative > promised me C7 programming manual, but I never got it. Pinged twice, no > reply. >But your padlock implementation obviously supports the new AES-256 mode of the C7, doesn't it?
Could loop-AES IV computation also be done in padlock and speed things up? - Linux-crypto: cryptography in and on the Linux system Archive: http://mail.nl.linux.org/linux-crypto/