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Fixed missing destination-side ephemeral key generation in link establishment
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parent
32ee4216fd
commit
8886ed5794
17
RNS/Link.py
17
RNS/Link.py
@ -164,7 +164,7 @@ class Link:
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self.__remote_identity = None
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if self.destination == None:
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self.initiator = False
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self.prv = self.owner.identity.prv
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self.prv = X25519PrivateKey.generate()
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self.sig_prv = self.owner.identity.sig_prv
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else:
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self.initiator = True
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@ -193,15 +193,11 @@ class Link:
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self.set_link_closed_callback(closed_callback)
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if (self.initiator):
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peer_pub_bytes = self.destination.identity.get_public_key()[:Link.ECPUBSIZE//2]
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peer_sig_pub_bytes = self.destination.identity.get_public_key()[Link.ECPUBSIZE//2:Link.ECPUBSIZE]
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self.request_data = self.pub_bytes+self.sig_pub_bytes
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self.packet = RNS.Packet(destination, self.request_data, packet_type=RNS.Packet.LINKREQUEST)
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self.packet.pack()
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self.establishment_cost += len(self.packet.raw)
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self.set_link_id(self.packet)
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self.load_peer(peer_pub_bytes, peer_sig_pub_bytes)
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self.handshake()
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RNS.Transport.register_link(self)
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self.request_time = time.time()
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self.start_watchdog()
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@ -240,7 +236,7 @@ class Link:
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signed_data = self.link_id+self.pub_bytes+self.sig_pub_bytes
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signature = self.owner.identity.sign(signed_data)
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proof_data = signature
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proof_data = signature+self.pub_bytes
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proof = RNS.Packet(self, proof_data, packet_type=RNS.Packet.PROOF, context=RNS.Packet.LRPROOF)
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proof.send()
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self.establishment_cost += len(proof.raw)
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@ -261,8 +257,13 @@ class Link:
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self.had_outbound()
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def validate_proof(self, packet):
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if self.status == Link.HANDSHAKE:
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if self.initiator and len(packet.data) == RNS.Identity.SIGLENGTH//8:
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if self.status == Link.PENDING:
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if self.initiator and len(packet.data) == RNS.Identity.SIGLENGTH//8+Link.ECPUBSIZE//2:
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peer_pub_bytes = packet.data[RNS.Identity.SIGLENGTH//8:RNS.Identity.SIGLENGTH//8+Link.ECPUBSIZE//2]
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peer_sig_pub_bytes = self.destination.identity.get_public_key()[Link.ECPUBSIZE//2:Link.ECPUBSIZE]
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self.load_peer(peer_pub_bytes, peer_sig_pub_bytes)
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self.handshake()
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self.establishment_cost += len(packet.raw)
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signed_data = self.link_id+self.peer_pub_bytes+self.peer_sig_pub_bytes
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signature = packet.data[:RNS.Identity.SIGLENGTH//8]
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