[Ed Kolis]

Originally posted by David E. Gervais:
Fyron, Digital signatures have been around for a long time,..

Here is a blatant example of a digital signature using my name..

(snip)

How would that be useful to sign anything? The only way you can verify it is if you know how it is produced, and if you know that, what's to stop you from producing counterfeits? e.g. I start making images with the "David Gervais" RGB code in the corner!

I suppose it might work the first time - "Hah! That's not mine! All the other ones have those five pixels in the corner!" - but then after that you'd have to change your signature on all existing images and a simple fc oldimage.bmp newimage.bmp would easily root out the differences...