Dave, if someone takes a "screen shot" of a JPE then the image could be reused, correct? If that is the case then why have it encrypted?? Just asking because I don't know for sure.
Nikon D300, D3s, Nikon 10.5 lens, RingT105N+Footplate+MrotatorTCPs, Giottos MT9261 Tripod, Manfrotto 410 Jr geared head.
If you know the "secret" then everyday is a good day!