[MPlayer-dev-eng] Zattoo, AES, avutil

[Michael Niedermayer]

Hi

On Mon, Mar 12, 2007 at 05:11:41PM +0100, Ilja Kamps wrote:
> On Sun, Mar 11, 2007 at 10:03:16PM +0100, Michael Niedermayer wrote:
> > Hi
> > 
> > On Sun, Mar 11, 2007 at 09:16:06PM +0100, Reimar D?ffinger wrote:
> > > Hello,
> > > On Sun, Mar 11, 2007 at 08:58:34PM +0100, Michael Niedermayer wrote:
> > > > On Sun, Mar 11, 2007 at 05:31:47PM +0100, Vladimir Serbinenko wrote:
> > > > > It's problematic to use AES from libavutil because it doesn't support
> > > > > padding and padding is necessary for zattoo
> > > > 
> > > > well so add 3 lines of c code to your zatoo code to pad the last
> > > > block
> > > 
> > > He is talking about OEAP, for which there only seems to be only the overly
> > > complicated and incorrect mathematical paper http://www-cse.ucsd.edu/users/mihir/papers/oae.pdf
> > > and some similarly overly complicated code as documentation.
> > 
> > hmm, then why dont you (or the author of the patch) explains it in a 
> > few words?
> > 
> > 
> > > It at least needs a SHA-implementation though.
> > 
> > so from all the tiny fragments of information on the ML it seems we need 
> > a SHA-1 and a RSA implementation?
> > which then somehow get connected ...
> >
> 
> SHA1 isn't much, see attached file

RSA isnt more either ...

anyway both RSA and SHA-1 should be added to libavutil, but these must be
clean, small, simple and fast implementations ...

the one below fails in clean and small but can certainly serve as a starting
point for a nicer implementation
the most obvious problem it has is the use of macros and manually unroled
loops instead of inline functions and normal for()
the rest is simple plain stupidity, like writing to variables which are
never read afterwards and doing otherwise silly things ...

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Many that live deserve death. And some that die deserve life. Can you give
it to them? Then do not be too eager to deal out death in judgement. For
even the very wise cannot see all ends. -- Gandalf
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