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PG Meeting 28.05.25

PG Meeting 28.05.25.md

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+PG Meeting 28.05.25
+===
+
+ToDo:
+
+- Add other device from already existing user and look what happens
+
+- Traffic analysis of rekeying (group and single device and adding additional device) 
+
+Marvin: 
+    - recompile Signal for more logging
+
+Leander:
+    - Looking into the rekeying mechanism exchange from outside
+
+Maurice:
+    - Add a second device for the same user to a group
+
+
+Ideas for backchannels:
+
+- Rekeying on leaving or entering a group ?
+- Rekeying on new device of an already participant in the group (active)
+- Getting status info (passive)
+- Typing... notification as timing backchannel (passive)
+
+
+Tooling:
+
+- SSLKEYLOGFILE env to decrypt server communication (possible)
+- Self compile Signal app and add logging after message decryption
+
+Ideas:
+
+- Is there a RTT in calls before ringing (handshake with RTT ?)
+