"Kerry L. Bonin" wrote:
> Assuming the body of child porn in circulation is of some reasonable size,
> and grows far less rapidly than adult porn, it should be feasible to
> construct a "fingerprint" style database by scanning the collections the
> FBI (and some postmasters) are known to have in their posession.
>
> An automated tool could then conceivably be created in conjunction with a
> statefull inspection firewall or statefull passive line tap to recognize
> when significant quantities of registered porn are being transmitted.
>
> The obvious counter for this would be encryption or steganography, which
> was also mentioned.
not to mention that your fingerprint algorithm needs to survive
rescaling, resampling, sharpening, flipping and other transformations
likely to be made.
