[Cryptography] Licensing of cryptographic services in France

[Phillip Hallam-Baker]

On Wed, Aug 28, 2024 at 11:12 PM Christian Huitema <huitema at huitema.net>
wrote:

>
> On 8/28/2024 4:57 PM, Phillip Hallam-Baker wrote:
> >
> > Steganography just means a slight reduction in payload capacity.
> > instead of passing 1200 bytes of payload at a time, it would be maybe
> > 1140. So worst case 5%-10% reduction in bandwidth.
>
> That's not the figures that I am used to. The most common algorithm is
> to encode the hidden message in the least significant bits of an image
> encoding, but then the signal is occupying at most 10% of the bits. But
> this is kind of an upper bound. If I understand correctly , there is a
> whole body of research developing better steganography, and developing
> algorithms capable of detecting the presence of embedded messages.
> Everything else being equal, the higher the ratio of message to payload,
> the easier it should be to detect the presence of steganography.
>

Steganography is simply concealing the fact there is a message there.

In a world where HTTP crossed the net unencrypted by default, twiddling the
LSB of images was the best we can do.

In a world where everything goes over QUIC, we can disguise an encrypted
two way MOQ session as a HTTP/3.0 over QUIC session.

Steganography has always been double ended, creating easier camouflage to
hide in is just as valid as making use of the existing cover.
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