Sparrowvsrevolution writes "For the last year Bram Cohen, who created the breakthrough file-sharing protocol BitTorrent a decade ago, has been working on a tool he calls DissidentX, a steganography tool that's available now but is still being improved with the help of a group of researchers at Stanford. Like any stego tool, DissidentX can camouflage users' secrets in an inconspicuous website, a corporate document, or any other, pre-existing file from a Rick Astley video to a digital copy of Crime and Punishment. But it uses a new form of steganography based on cryptographic hashes to make the presence of a hidden message far harder for an eavesdropper to detect than in traditional stego. And it also makes it possible to encode multiple encrypted messages to different keys in the same cover text."
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