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Elon's Encrypted DMs with Matthew Garrett
Security Cryptography Whatever
The Importance of Double Ratchet Cryptography
Twitter has successfully rebuilt its GCM system with the same properties as Matrix and far less time. Thomas: You wouldn't have a single GCM key for the entire life of a conversation. "It doesn't take a whole lot of effort to do a key exchange, right? The whole premise of double ratchets is like you do key exchanges every possible time"
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