Reply to post: Re: Citizen Lab's visual demonstration of AES-ECB encrypting an image.

Not only is Zoom's strong end-to-end encryption not actually end-to-end, its encryption isn't even that strong

Anonymous Coward
Anonymous Coward

Re: Citizen Lab's visual demonstration of AES-ECB encrypting an image.

That example's kinda bullshit. At least for video.

While the example stands for raw bitmap images, video streams don't contain every frame as a raw image. Even key frames aren't stored as plain images like that.

Additionally, encryption on a video stream can be implemented at different levels. Either at the file level where the entire file fragment (MP4, TS, MKV, etc) is encrypted, or at the stream level where sample data within the file is encrypted. Add in the potential multiplexing of audio and video samples within the stream, and the chances of you being able to pick out intelligible imagery is pretty slim.

I'm not saying it's impossible, but given any random video stream, I'd be very surprised if you could make anything out.

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