[Cryptography] Augmented Reality Encrypted Displays

[WebDawg]

On Sun, Aug 23, 2015 at 4:28 AM, Jerry Leichter <leichter at lrw.com> wrote:

>
> Cute idea, but let's do a simple threat analysis:  The device doing the
> displaying necessarily has access to both images.  Such a device
> necessarily has access to reasonably amounts of computing power.  Just what
> is the extra security threat in letting the device do the combining for you?
>
> You might try to argue that the images to be combined would be hidden in
> other data, so the device wouldn't know what to combine.  But in fact the
> images are highly distinctive and easy to recognize - they have to be for
> humans to readily be able to combine them.
>
> I just don't see a situation where having the user combine the images adds
> anything to the security.
>
>                                                         -- Jerry
>

>

It could be a way to display more then one encrypted thing at once though.
Encrypting sections of video stream so not completely useless.
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