Refactor session handling in demo.py

Author: BryceWDesign

demo.py

@@ -9,15 +9,18 @@ def main() -> None:
     pending_alice = SessionFactory.initiator(
         local_identity=alice,
         remote_name=bob.name,
+        remote_signing_public_key=bob.ed25519_public_bytes(),
         suite=AeadSuite.AES_GCM_SIV,
         supplemental_secret=b"future-pq-kem-secret",
     )
-    response, bob_session = SessionFactory.responder(
+    response, pending_bob = SessionFactory.responder(
         local_identity=bob,
+        remote_signing_public_key=alice.ed25519_public_bytes(),
         offer=pending_alice.offer,
         supplemental_secret=b"future-pq-kem-secret",
     )
-    alice_session = pending_alice.complete(response)
+    confirmation, alice_session = pending_alice.complete(response)
+    bob_session = pending_bob.complete(confirmation)
 
     packet = alice_session.encrypt(b"CypherSyntax demo message")
     plaintext = bob_session.decrypt(packet)