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Switch KDF from SHA-256 to Blake2. #169 The BTP spec calls for Blake2s, but there's no Java implementation available. I suggest we go with Blake2b for now. If it turns out to be a performance bottleneck on 32-bit platforms we can consider implementing Blake2s and merging it upstream. This depends on !13. See merge request !21
Briar is a messaging app designed for activists, journalists, and anyone else who needs a safe, easy and robust way to communicate. Unlike traditional messaging tools such as email, Twitter or Telegram, Briar doesn't rely on a central server - messages are synchronized directly between the users' devices. If the Internet's down, Briar can sync via Bluetooth or Wi-Fi, keeping the information flowing in a crisis. If the Internet's up, Briar can sync via the Tor network, protecting users and their relationships from surveillance.