Dr S N Henson wrote:
>
> Ben Laurie wrote:
> >
> > Dr S N Henson wrote:
> > >
> > >
> > > Eh? Isn't the IV length the same as the block length?
> >
> > Nope. Rijndael's biggest IV is 16 bytes, but the biggest block is 32
> > bytes. I haven't checked why, so if someone wants to enlighten me...
> >
>
> Well they can enlighten me too then. I can't see how you can possibly
> use 32 byte blocks in CBC or CFB mode with a 16 byte IV.
Note that I've only implemented ECB mode so far - ISTR the gamut of
block/key sizes for other modes is more restrictive - but I can't check
coz I'm in SF, the Rijndael source on the web is PKZipped, I forgot to
put (the rest of) it on my laptop and I'm running FreeBSD.
Hmmm ... is there a Zipalike for *nix?
Cheers,
Ben.
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