Ask Slashdot: Encrypted Digital Camera/Recording Devices?
Ransak writes "As we hear more and more about dashboard cameras catching unplanned events, I've thought of equipping my vehicles with them just in case that 'one in a billion' moment happens. But given the level of overreach law enforcement has shown, I'd only consider one if I could be assured that the data was secure from prying eyes (e.g., a camera that writes to encrypted SD memory). Are there any solutions for the niche market of the paranoid photographer/videographer?"
In the UK you are required to decrypt files that may contain evidence of a crime under the RIP act.
That's why you have two decryption keys - one that decyrpts the actual video, and one that decrypts a stream of LOLcats videos. Then you say "Oh noes! My wife must have recorded LOLcats on here!".