def stage4(self):
s4_success = False
while not s4_success:
s4_buffer = network.recv_bcast(config.UDP_PAIRING_PORT)[0]
try:
target_server_guid = s4_buffer.split("$")[0]
if target_server_guid == self.passwddb.get_server_guid():
decrypted_payload = safe.decrypt_aes(s4_buffer.split("$")[1], self.user_info.aes_key)
if decrypted_payload == "OK":
msg = self.candidate_smartphone_guid + "$" + safe.encrypt_aes("OK", self.user_info.aes_key)
network.send_bcast(config.UDP_PAIRING_PORT, msg)
self.user_info.smartphone_guid = self.candidate_smartphone_guid
self.passwddb.save_user_info(self.user_info)
except IndexError:
print "Received message in unknown format"
def stage2(self):
s2_success = False
while not s2_success:
s2_buffer = network.recv_bcast(config.UDP_PAIRING_PORT)[0]
# decode and see if it matches
print "Buffer Received: " + toHex(s2_buffer)
try:
smartphone_guid = s2_buffer.split("#")[0]
print "Declared GUID: " + smartphone_guid
try:
decrypted_part = safe.decrypt_aes(s2_buffer.split("#")[1], self.user_info.aes_key)
assert decrypted_part
except:
print "Could not decrypt payload"
print "Decrypted into: " + decrypted_part
if decrypted_part == smartphone_guid:
self.candidate_smartphone_guid = smartphone_guid
s2_success = True
except IndexError: # No hash in the string...
print "Invalid buffer format received."
