RNS/Destination.py

@@ -269,7 +269,6 @@ class Destination:
             if self.ratchets != None:
                 self.rotate_ratchets()
                 ratchet = RNS.Identity._ratchet_public_bytes(self.ratchets[0])
-                RNS.Identity._remember_ratchet(self.hash, ratchet)
 
             if app_data == None and self.default_app_data != None:
                 if isinstance(self.default_app_data, bytes):
@@ -574,7 +573,7 @@ class Destination:
         if self.type == Destination.SINGLE and self.identity != None:
             selected_ratchet = RNS.Identity.get_ratchet(self.hash)
             if selected_ratchet:
-                self.latest_ratchet_id = RNS.Identity._get_ratchet_id(selected_ratchet)
+                self.latest_ratchet_id = RNS.Identity.truncated_hash(selected_ratchet)
             return self.identity.encrypt(plaintext, ratchet=selected_ratchet)
 
         if self.type == Destination.GROUP:

RNS/Identity.py

@@ -249,11 +249,7 @@ class Identity:
         if ratchet == None:
             return None
         else:
-            return Identity._get_ratchet_id(ratchet)
-
-    @staticmethod
-    def _get_ratchet_id(ratchet_pub_bytes):
-        return Identity.full_hash(ratchet_pub_bytes)[:Identity.NAME_HASH_LENGTH//8]
+            return Identity.truncated_hash(ratchet)
 
     @staticmethod
     def _ratchet_public_bytes(ratchet):
@@ -268,7 +264,7 @@ class Identity:
     @staticmethod
     def _remember_ratchet(destination_hash, ratchet):
         # TODO: Remove at some point, and only log new ratchets
-        RNS.log(f"Remembering ratchet {RNS.prettyhexrep(Identity._get_ratchet_id(ratchet))} for {RNS.prettyhexrep(destination_hash)}", RNS.LOG_EXTREME)
+        RNS.log(f"Remembering ratchet {RNS.prettyhexrep(Identity.truncated_hash(ratchet))} for {RNS.prettyhexrep(destination_hash)}", RNS.LOG_EXTREME)
         try:
             Identity.known_ratchets[destination_hash] = ratchet
 
@@ -288,7 +284,7 @@ class Identity:
                         ratchet_file = open(outpath, "wb")
                         ratchet_file.write(umsgpack.packb(ratchet_data))
                         ratchet_file.close()
-                        os.replace(outpath, finalpath)
+                        os.rename(outpath, finalpath)
 
                 
                 threading.Thread(target=persist_job, daemon=True).start()
@@ -677,7 +673,7 @@ class Identity:
                         for ratchet in ratchets:
                             try:
                                 ratchet_prv = X25519PrivateKey.from_private_bytes(ratchet)
-                                ratchet_id = Identity._get_ratchet_id(ratchet_prv.public_key().public_bytes())
+                                ratchet_id = Identity.truncated_hash(ratchet_prv.public_key().public_bytes())
                                 shared_key = ratchet_prv.exchange(peer_pub)
                                 derived_key = RNS.Cryptography.hkdf(
                                     length=32,