NODE 57848c91Re: Graphic encryption
Andrew Loewenstern <andrew_loewenstern@il.us.swissbank.com>Fri, 6 Oct 95 10:35:53 PDT
> Is there anything particular in graphic encryption? I usually
> encrypt graphics and document images as regular files with regular
> encryption...
I believe graphic encryption outputs a valid image file that is apparently
white noise until you perform the decryption transformation on it. An
obvious way to do this with a non-lossy file format is to encrypt pixel vales
with a stream cipher. Another way to make the image unviewable would be to
shuffle the pixels or rasters with a PRNG.
andrew
NODE 388c4e58Graphic encryption and XV
Rick Busdiecker <rfb@lehman.com>Wed, 11 Oct 95 04:11:29 PDT
Does anyone have patches to XV that allow it to display a PGP
encrypted image without having to explicitly decrypt it first?
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NODE 8ce4abd0Re: Graphic encryption and XV
s1018954@aix2.uottawa.caWed, 11 Oct 95 05:41:53 PDT
On Wed, 11 Oct 1995, Rick Busdiecker wrote:
> Does anyone have patches to XV that allow it to display a PGP
> encrypted image without having to explicitly decrypt it first?
XV? Which is?
(Some viewer that runs on X windows?)