James A. Donald wrote:
> With video, the authentication problem, which has always been the great
> barrier to the widespread use of crypto, goes away.
>
> [Does it? In a few years, it should be possible to synthesize video in
> real time... --Perry]
Today's best synthesized voice is clearly not human at all, much less
any particular human, but VOIP hasn't made authentication go away yet.
Real-time synthesis of face and body video may be easier or harder
than that of voice, I don't know, but for some time I think the best
attack against each will be old-fashioned analog impersonation.
That's a fair bit harder for video/audio than for audio alone, maybe
hard enough for some authentication needs.
--
Eli Brandt | [EMAIL PROTECTED] | http://www.cs.cmu.edu/~eli/
