...which is a false sense of security.
pdf's 'do not edit' flag is just that - a flag that client software has
to obey. if it does not, there is nothing that could stop anyone from
copying, editing or doing other things to the content.
the only thing that could help with _editing_ would be digital
signatures which would show right away that the file was edited. there
is no way to prevent data from being copied unless you control whole
data path - in this case, that would require completely controlling all
software in the document's path.
and this is what we are trying to prevent with opensource ;)
so, in summary : if you want to preserve data integrity, use digital
signatures.
web.kracked wrote:
The only way I know to make the file uneditable
is to use Acrobat Professional or maybe try to find
a password adding program. If you give the file a password to be
entered for edit, then do not give
the password to anyone.
...
--
Rich
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