Hi graywolf, On Sun, 26 Feb 2006 11:37:29 -0500, graywolf wrote:
>I think a point is being missed here. Any digital file can be edited! Of course it can, I did not say otherwise ... I am a system programmer (like you I think), and actually reverse engineering data-formats and data-recovery is my main business :-) What I meant to say is that there are no commercial (or open source) products that do it, mainly because it does to make much sense ... >Just because there is not a readily available cheap commercial product >for that particular file does not mean the file can not be edited by an >expert. In the old days when software was sold on floppy disks, and the >companies kept coming up with protection schemes to keep you from >copying the disk we (generic we --while I wrote such a program myself in >Z-80 machine code, I did not make it publicly available) developed a >program that would copy the disck bit by bit including the copy >protection part, or would allow you to edit particular bits on the disk >to eliminate the copy protection. > >So if someone wanted to produce a camera-raw file that had bogus >information in it, it would not be a difficult problem. And once done >there would be no way in the world for anyone to prove it was not an >original file except by a confession by the person who had edited it. > >To so many people software is some kind of magic. It is not. Almost >anyone can learn to write it and edit it if they are willing to make the >effort and take the time. Certainly, allthough reverse-engineering RAW camera formats without any documentation is quite a challenge since some non-linear transformations are involved ... Regards, JvW ------------------------------------------------------------------ Jan van Wijk; http://www.dfsee.com/gallery
