Collage

[Jerry Leichter]

Yesterday I asked about Haystack, an anti-censorship system that  
appears to exist mainly as newspaper articles.  So today I ran across  
another system, which appears to be real:  Collage (http://gigaom.com/2010/07/12/software-uses-twitter-flickr-to-let-dissidents-send-secret-messages/ 
), developed by a group at Georgia Tech and to be presented at  
Usenix.  On a crypto level, unlike Haystack, Collage is nothing new:   
It uses steganographic techniques to hide text in photos.  What it  
contributes is easy to use software for both embedding and extracting  
the data, integrated with Flickr.

                                                       -- Jerry
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