Schneier, Wagner and Kelsey have done some work on an authenticating camera. One issue to be concerned with is that what the camera sees is not always the truth. Putting a film set together to film bigfoot is easy. The fact that the film is authenticated as having come from the camera doesn't mean a whole lot in some cases. Adam Jim Choate wrote: | Hi, | | I was in a discussion with several people regarding the rate if improvement | of current video production equipment and how it would effect the veracity | of video images of all sorts in future legal cases. | | Is anyone aware of anybody working on a mechanism to digitaly sign video and | photographs (a cool app of stego I suspect)? This would alleviate a great | deal of mistrust for security video cams and such. What I had in mind was | the manufacturer puts a unique key in each machines rom's and when each | image comes in a signature of the image and the key is stored in the | interframe retraces that are normaly not shown (ala videotext). I asked a | couple of people in the biz that I know and it seemed a new concept to them. | | Just a thought... | | | ____________________________________________________________________ | | | | | The most powerful passion in life is not love or hate, | | | but the desire to edit somebody elses words. | | | | | | Sign in Ed Barsis' office | | | | | | _____ The Armadillo Group | | | ,::////;::-. Austin, Tx. USA | | | /:'///// ``::>/|/ http://www.ssz.com/ | | | .', |||| `/( e\ | | | -====~~mm-'`-```-mm --'- Jim Choate | | | ravage@ssz.com | | | 512-451-7087 | | |____________________________________________________________________| | -- "It is seldom that liberty of any kind is lost all at once." -Hume