On Sun, Mar 19, 2017 at 07:33:24AM -0400, Richard Damon wrote:
I would say that the problem that is being attempted to solve is fundamentally impossible to do perfectly. It is impossible to distribute messages in a secure manner to a number of recipients that you don't have total control over their enviroment and KNOW that security is being maintained. Communication always has that sort of issue, if you tell someone something private, you need to be able to trust that they will keep it private, and their is always a risk that they will reveal the information intentionally or accidentally.
[snip]
I think this (and the rest, which I've elided for brevity) is a very good statement of the problem.
I'll just add that -- in the general case, and quoting from the above, we already KNOW that security is *not* being maintained. It's not an open question, it's been answered very clearly for well over a decade.
(In the specific case, e.g., the right people using the right devices with the right knowledge and self-discipline: maybe. But there are not many of those cases and any of them can revert to the general case in seconds with one poor decision or perhaps even without one.)
---rsk