[Cryptography] Augmented Reality Encrypted Displays

Henry Baker hbaker1 at pipeline.com
Sat Aug 22 11:22:53 EDT 2015

FYI -- True end2END encryption: your eyes & brain do the decoding; the displays show only garbage.


Usability of Augmented Reality for Revealing Secret Messages to Users but Not Their Devices

We evaluate the possibility of a human receiving a secret
message while trusting no device with the contents of that
message, by using visual cryptography (VC) implemented
with augmented-reality displays (ARDs).
Visual cryptography [26] is a cryptographic secret-sharing
scheme where visual information is split into multiple shares,
such that one share by itself is indiscernible from random
noise.  (Equivalently, one of these shares constitutes a one-
time pad as discussed in Section 1, and the other represents
the ciphertext of the secret message.)  The human visual
system performs a logical OR of the shares to decode the
secret message being shared.

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