Re: Hardware acceleration?

On Friday 12 December 2008 14:01, Daniel Cheng wrote:
> >>
> >> I just searched a bit for other hardware accelerators a bit and came
> >> across the Sun UltraSparc T2 again.
> >>
> >> If SHA-256 and DSA are the most common tasks within freenet I think that
> 
> We spend 40x more time on Rijndael then on SHA-256.
> The time spend on SHA256 is nothing.

That's because we use the JVM's native implementation of SHA-256.
> 
> >> would be the processor of choice for hardware acceleration, although it
> >> lacks a RNG or Rijndael of course.
> >
> > We also do a lot of Rijndael. Some hardware may be able to do Rijndael 
with a
> > 256 bit block size, I dunno exactly what operations the hardware actually
> > does.
> 
> They do NIST standard AES.
> Our Rijndael use the blocksize not in the standard.

They implement the full algorithm and can't be retasked? Ok.
> 
> > However, if you are actually queueing downloads, we also do a lot of FEC
> > decoding and encoding. Which can't be hardware accelerated.

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