def calc_rendezvous_point_data(rendezvous_point):
# print rendezvous_point #testing,currently not being passed, no item error
rp_ip = consensus.getRouter(rendezvous_point)["ip"]
rp_or_port = consensus.getRouter(rendezvous_point)["orport"]
rp_id = consensus.getRouter(rendezvous_point)["identity"]
router_descriptor = consensus.getRouterDescriptor((consensus.getRouter(rendezvous_point))["identityhash"])
onion_key = consensus.getRouterOnionKey(router_descriptor)
return rp_id, rp_ip, rp_or_port, onion_key
def remoteKeyX (on):
r = consensus.getRouter(on)
x = numunpack(os.urandom(DH_SEC_LEN))
X = pow(DH_G,x,DH_P)
X = numpack(X,DH_LEN)
router_descriptor = consensus.getRouterDescriptor(r['identityhash'])
router_onion_key = consensus.getRouterOnionKey(router_descriptor)
remoteKey = RSA.importKey(router_onion_key)
payload = hybridEncrypt(remoteKey, X)
return (x, payload)
def buildCreatePayload(nm):
#get router rsa onion key
r = consensus.getRouter(nm)
rd = consensus.getRouterDescriptor(r['identity'])
rdk = consensus.getRouterOnionKey(rd)
rsa = RSA.importKey(rdk)
#generate diffie helman secret
x = numunpack(os.urandom(DH_SEC_LEN))
#DH pub key X
X = pow(DH_G, x, DH_P)
#encrypt X to remote
createpayload = hybridEncrypt(rsa,numpack(X, DH_LEN))
#pack packet
#pkt = struct.pack(">HB", circId, cellTypeToId("CREATE")) + createpayload + "\x00" * (509-len(createpayload))
return (x, createpayload)
