Re: Encrypt a file to prevent unwanted viewers?

On Thu, 19 Jul 2007, in the Usenet newsgroup comp.security.misc, in article
<1184847446.708817.181960@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
josh.dylewski@xxxxxxxxx wrote:

Basically what I do is send a proposal to a customer and I want that
proposal protected. I send probably 50 a year to people I really don't
know, and that I don't want them to have to do anything other than
open the document. They should know that it is protected, but once (if)
it leave there computer then it wont open.

You are trying to solve a _legal_ problem with a _technical_ solution.
Ain't gonna work. Making prospective customers jump through hoops is
not the best way to get business unless you're the only game in town,
in which case they may decide to find other means of entertainment..

It seems like it is possible, once the document is opened it ties
with that computers address and only opens for that computer. That way
if he forwards it the receiver will not be able to open it. Seems
possible to me but I really don't know too much about whats out there.

Tell me - how do you think I'm replying to your article? It's really
fairly simple, and you've probably done so many times. Hint: Cut/Paste

You can send the document with what-ever technical protection you wish,
but the recipient STILL has to be able to read the d4mn thing. If the
recipient can read it, they can copy it - even if that means taking a
camera and photographing the monitor they're viewing it on. There
really is more than one way to forward the contents of a document -
even one that you've created using a non-standard font. At least I
assume you want the recipient to be able to read it... I could be
wrong of course.

Discuss your problem with your legal advisor.

Old guy
.

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