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Re:Twilio incident: What Signal users need to know by melgafin on Monday August 15, 2022 @03:25PM (#32474111)
Good luck finding documentation about the protocols and APIs used by signal. While every random cryptocurrency has a cryptography whitepaper, it seems that Signal does not.
Re:Twilio incident: What Signal users need to know by niel on Monday August 15, 2022 @05:08PM (#32475400)
Signal published detailed specifications of the protocol with reference implementations since at least Feb 2017 (group messaging protocol was added later on): https://signal.org/docs/

The server and clients are open source: https://github.com/signalapp