Privacy is Priceless, but Signal is Expensive (signal.org)
Quantum Resistance and the Signal Protocol (signal.org)
Signal >> Specifications >> The PQXDH Key Agreement Protocol (signal.org)
What If: Signal Was Part of the Fediverse? (signal.org)
Anyone else wondering?
Signal: Introducing usernames and phone number privacy (signal.org)
TLDR version as per Signal’s Mastodon:...
Privacy is Priceless, but Signal is Expensive (signal.org)
We estimate that by 2025, Signal will require approximately $50 million dollars a year to operate—and this is very lean compared to other popular messaging apps that don’t respect your privacy.