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Re: The Ecosystem is Moving
Moxie Marlinspike gave a talk at 36C3 that misrepresented decentralized systems. This is my opinion regarding his arguments.
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Closer Look at the Double Ratchet
In this post I try to explain the Double Ratchet Algorithm that drives the cryptography behind OMEMO and Signal. This is the second part of my series about the crypto behind OMEMO.
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Shaking Hands With OMEMO: X3DH Key Exchange
In this blog post I take a detailed look at how the Extended Triple Diffie-Hellman Key Exchange (X3DH) works. This algorithm is part of the cryptography that drives OMEMO.
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OMEMO
Recently there was a lot of news coverage of an alleged „backdoor“ in WhatsApp, the proprietary messaging application owned by Facebook. WhatsApp deployed OpenWhisperSystem’s Signal-protocol roughly a year ago. Now a researcher showed, that WhatsApp’s servers are able to register a new device key for a user, so that messages that the user did not…