Interesting but limited in use

renox — Thu, 09 Sep 2010 08:46:56 +0000

IHMO the main weakness of steganography is that it's (currently) restricted to man to man communications i.e you cannot browse a website with Collage.

Sure you can in theory ask someone to download a webpage for you and send you the result hidden using Collage also, but this doesn't seem very practical for 'day to day' usage.
It would be interesting to automate this..

Thwarting internet censors with Collage

ortalo — Mon, 06 Sep 2010 13:24:11 +0000

What about using covert channels instead of steganography to evade such censorship? I wonder which technique is more vulnerable to detection (both have been well studied in the litterature).

To illustrate the covert channel idea: if a black and white picture is stored, this a "0", if that's a colour picture, then it's a "1".
Of course, practical implementations should try to improve the bandwitdh, possibly with more image types or other types of shared resources: for example (landscape, portrait, fish, animal) mapping to (00,01,10,11).

LWN: Comments on "Thwarting internet censors with Collage"

Interesting but limited in use

Thwarting internet censors with Collage