Anti-Censorship Scheme Makes Website Blocking Impossible

Searching_ _ _ · Aug 19, 2011

When a user wants to visit a blacklisted site, he or she would establish a secure connection to an HTTPS website, which could be any password-protected site that isn't blocked. This is a decoy connection. The Telex software marks the connection as a Telex request by inserting a secret-coded tag into the page headers. The tag utilizes a cryptographic technique called "public-key steganography."
"Steganography is hiding the fact that you're sending a message at all," Halderman said. "We're able to hide it in the cryptographic protocol so that you can't even tell that the message is there."
The user's request passes through routers at various ISPs, some of which would be Telex stations. These stations would hold a private key that lets them recognize tagged connections from Telex clients. The stations would divert the connections so that the user could get to any site on the Internet.
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New Anti-Censorship Scheme Could Make It Impossible to Block Individual Web Sites - Science Daily

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Anti-Censorship Scheme Makes Website Blocking Impossible

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Anti-Censorship Scheme Makes Website Blocking Impossible

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