Responding to msg by lile@art.net (Lile Elam) on Mon, 19 Sep 0:11 AM

So, I have been thinking that a way an artist can insure a viewer that the art they are viewing is really that of the artist, the artist can *sign* their art with their private key and others can check it with their public key. Now, the art would be factered into the key generated that others would check with the public key.

So, a image file (gif, jpeg, tiff whatever) would be run through a encryption coding that would generate a signage based on the artist's image and their private key. The image would remain unchanged. Then viewers could run the same encyription coding on the image and apply the artist's public key to see if it really *is* their work....

As a parallel to your inquiry I offer: Thanks to help from this list my firm uses PGP to encrypt, sign and verify CAD architectural documents exchanged with consultants and clients. We also conceal ID in the documents by a simple steganographic method using combined PGP and CAD posted here a few weeks back, which is not revealed to the recipients, as a check on authorized use and distribution. Any suggested improvements would be welcome. John