Re: Shannon -- the stream cipher, that is
- From: Phil Carmody <thefatphil_demunged@xxxxxxxxxxx>
- Date: 13 Feb 2007 23:19:56 +0200
Paul Rubin <http://phr.cx@xxxxxxxxxxxxxx> writes:
"xmath" <xmath.news@xxxxxxxxx> writes:
Salsa20 is quite fast, and has no key/IV setup overhead whatsoever.
True, especially with 8 rounds. But I was hoping for something that
beats RC4.
It's particularly fast on PowerPC G4, where you get less than 280
cycles per 64-byte block, which makes for 4.5 cycles/byte.
Yeah, but I think those are becoming extinct. I guess they still
exist in some embedded products, but Macintoshes don't use them any
more.
Freescale's Power Architecture kit (in particular G4-family, though
usually with limited or no FPU) is exceptionally common in network
infrastructure equipment. There is often some crypto taking place
in those processors. (I believe some have Kasimi, or whatever it's
called, accelerators, for example.)
Phil
--
"Home taping is killing big business profits. We left this side blank
so you can help." -- Dead Kennedys, written upon the B-side of tapes of
/In God We Trust, Inc./.
.
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