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Asymmetric Encryption Camcorder

  [vote for,

When using cameras in hostile places, you may want to avoid being forced to show your camcorder content. This is one way to do it.

The camcorder has a one way encryption feature that uses 'public-private' key system.

Quite simply anything that is recorded is encrypted with the public key.

The encrypted video file will not be able to be decrypted without the private key.

Hence the video in the camcorder can only be viewed when uploaded to the 'base server' that has the private key.


Solders :- allow for recording of operations, while mitigating the risk of the footage falling into the wrong hands.

Journalist :- raw footage will not be able to be analyzed by a totalitarian state if a journalist is captured.

CCTV:- prevent man in the middle attack of CCTV stream

Spies:- Hidden cameras if discovered will not be able to be decrypted.

Basically if you don't want captured videos to be viewable by the captor, use this system.

mofosyne, Sep 28 2011

Now exist as a hack :D http://hackaday.com...re/#comment-2263614
[mofosyne, Dec 18 2014]


       The NSA just LOVE people like you ... [+]
8th of 7, Sep 28 2011

       I'd be more worried about the lens being damaged by the brightness of the solders' sparks.
theleopard, Sep 28 2011

       "Stop filming and let us see what you've been recording"
"It's encrypted"
MaxwellBuchanan, Sep 28 2011

       "Stop filming and let us see what you've been recording" "Sure" "Hey there isn't anything here." "Oh, I guess it got dropped too many times."
MisterQED, Sep 28 2011

       It's worth noting, the accepted "best way" of filming things in hostile territory is to have the camera transmitting the feed to a computer in a safe location. This idea would still be excellent for security applications n stuff.
DIYMatt, Sep 28 2011

       This already exists in the real world, just not in the public sector. The military and intelligence agencies of several countries routinely use this and other forms of digital ecrypted recording devices.
Alterother, Sep 28 2011

       DIYMatt - Its a good idea, however it requires sending the stream via satellite. While you are still behind hostile territory, camcorder encryption will help til you can get a chance to upload it.   

       Alterother - so perhaps its already baked but hidden from the public like ufo technology :p . So how do you know they would bother making custom devices like that. Even then, it would be nice to see consumer versions for journalist.
mofosyne, Sep 29 2011

       I would assume that if they catch me filming, they already know what will be on there right?   

       And most cases where journalists footage is seized, they wouldn't care so much about "examining the evidence" anyway.   

       For that reason, I will stick with the pinhole camera concealed in my boutonniere.   

       On an unrelated note, micro SD cards can be used within videocameras now. A few hours of footage may comfortably concealed in in ones collar, nose, bellybutton, deep within the toe of ones shoe, etc.
bob, Sep 29 2011

       [Akimbo], my source is Jane's 2011, Vol. 3 I think. I don't know how to link to the online version because you have to have a subscription, but I know at least one other Halfbaker who subcribes and may confirm this for us. The tech isn't exactly what you describe, but it's very close.
Alterother, Sep 29 2011

       Like bob said, the authorities don't need to decrypt the video to destroy it. This sort of encryption could only work if they thought they could see it but actually couldn't, and even that only works until people know that the technology exists.   

       Sending via satellite is not always possible, so I propose sending it by Wi-Fi. How? Just make small Wi-Fi repeaters that can be hidden nearby to where you are filming. They will be set to form ad-hoc networks. Each will make copies and send the data on to any other repeater within range. Once the video is transmitted they will go quiet to avoid being tracked by radio signal. Some may be attached to the internet for sending the data home, or they may send it slowly over the local cellular network. The video can be encrypted to reduce the chance of being intercepted by a competing reporter, or it can be left unencrypted so if the video doesn't get out immediately, perhaps someone will stumble upon the devices and pass the video on. Obviously this variation would be for journalistic type activities, not CCTV, spies, or extreme soldering.   

       An additional benefit is that once this technology becomes well known, the authorities will see that your camera is equipped with this technology and won't even bother you because they know that if they approach you, there will be a video of them shutting you down. So eventually this might even work if you forgot to place your repeaters or you got too far away.
scad mientist, Sep 30 2011

       //once this technology becomes well known, the authorities will see that your camera is equipped with this technology and...// ...arrest you, having previously made it illegal.
Wrongfellow, Sep 30 2011

       Scad: Good add on. Yes, let's build mesh networks to spread encrypted video around to assist in cases where auto-upload is unavailable.   

       The more we say, "It's already on the server", the more protected journalists will be.
sophocles, Mar 21 2014

       mesh networks and power to the people [+]
Voice, Dec 19 2014


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