[FFmpeg-soc] [soc]: r532 - matroska/matroskaenc.c
kostya.shishkov at gmail.com
Sun Jul 29 06:09:00 CEST 2007
On Sat, Jul 28, 2007 at 09:10:15PM +0200, Michael Niedermayer wrote:
> On Sat, Jul 28, 2007 at 09:03:42PM +0300, Kostya wrote:
> > On Sat, Jul 28, 2007 at 07:09:44PM +0200, Michael Niedermayer wrote:
> > > Hi
> > >
> > > On Sat, Jul 28, 2007 at 05:43:03PM +0300, Kostya wrote:
> > > > On Sat, Jul 28, 2007 at 02:16:23PM +0200, Michael Niedermayer wrote:
> > > > > Hi
> > > > [...]
> > > > >
> > > > > ... as i said getting a good and secure random number is not easy, you
> > > > > cannot use anything that could be usefull for an expoit or anything that
> > > > > could by used to identify time or place where encoding happened,
> > > > > not the current time, no pointers, ...
> > > > > you are left with the video/audio you are going to encode, and some stuff
> > > > > we cant easily use like the least significant bits of the time of some
> > > > > interrupts
> > > >
> > > > What about this?
> > > > http://en.wikipedia.org/wiki/UUID
> > >
> > > which version of UUIDs?
> > > you have 3 choices
> > > 1/2 contains the MAC address (this is the most stupid idea so far not to
> > > mention the issue of how to find the MAC address in a portable way)
> > That depends on what UUID is used - IIRC this one can be decoded.
There is a standard way to obtain information used for generating from this UUID
so this is good for verifying something but not as a random ID.
> Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
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