def init_self_connection(self):
#Add myself to neighbors
ownNeighborEntry = Neighbor()
ownNeighborEntry.ipAddress = self.hostname
ownNeighborEntry.encryptionKey = self.key
ownNeighborEntry.encryptionIV = self.iv
#Connect to own socket
tempNeighborList = {}
tempNeighborList[self.hostname] = ownNeighborEntry
self.onAPJoined(tempNeighborList)
def init_self_connection(self):
#Add myself to neighbors
ownNeighborEntry = Neighbor()
ownNeighborEntry.ipAddress = self.hostname
ownNeighborEntry.encryptionKey = self.key
ownNeighborEntry.encryptionIV = self.iv
#Connect to own socket
tempNeighborList = {}
tempNeighborList[self.hostname] = ownNeighborEntry
self.onAPJoined(tempNeighborList)
def sendFloodingMessage(self, message, max_ttl, msg_type='data', sub_type='std', key=str(), iv=str(), nodeID="255.255.255.255"):
self.log.debug("sendFloodingMessage()")
if len(key) != 16 or len(iv)!=16:
key = self.key
iv = self.iv
lasthop = self.hostname
else:
self.log.debug("sendFloodingMessage, last hop key = old keys")
lasthop = 'old_keys'
#self.key_material[lasthop] = (key, iv)
oldKeyNeighbor = Neighbor()
oldKeyNeighbor.encryptionKey = key
oldKeyNeighbor.encryptionIV = iv
oldKeyNeighbor.pubKey = self.pubKey
self.globalNeighborList[lasthop] = oldKeyNeighbor
self.log.debug("SendFlooding to: nodeID: %s, msg_type=%s" %(nodeID, msg_type))
#Apply asymmetric encryption for unicast messages
if nodeID != "255.255.255.255" and msg_type=="ctrl":
#Apply enrcyption with public key of receiver
if nodeID in self.globalNeighborList:
self.log.debug('Additional public key encryption for unicast CTRL message to %s applied.' % (nodeID))
oaep = PKCS1_OAEP.new(self.globalNeighborList[nodeID].pubKey)
asssymEncMessage = oaep.encrypt(message)
message = asssymEncMessage
else:
self.log.error('Unicast Message to neighbor %s cannot be sent, neighbor is not available in neighbor list' % (nodeID))
self.sendingUserSpaceMessageEvent.set()
return
elif nodeID != "255.255.255.255" and msg_type=="data":
if nodeID in self.globalNeighborList:
self.log.debug('Additional symmetric key encryption for unicast STD message to %s applied.' % (nodeID))
aes = AES.new(self.globalNeighborList[nodeID].unicastSendKey, AES.MODE_CFB, self.globalNeighborList[nodeID].unicastSendIv)
enc_message = aes.encrypt(message)
# to base64
enc_message_b64 = base64.encodestring(enc_message)
message = enc_message_b64
else:
self.log.error('Unicast Message to neighbor %s cannot be sent, neighbor is not available in neighbor list' % (nodeID))
self.sendingUserSpaceMessageEvent.set()
return
#create signature:
sig = self.security_helper.create_signature(message, self.rsaKey)
# encrypt message
aes = AES.new(key, AES.MODE_CFB, iv)
enc_message = aes.encrypt(message)
# to base64
enc_message_b64 = base64.encodestring(enc_message)
if msg_type != "ctrl":
self.log.debug('Source message: plain=%s, encrypted_B64=%s, rec:=%s' % (message, enc_message_b64, nodeID))
json_data = { 'host': self.hostname, 'lasthop': lasthop, 'id': self.local_id, 'rec': nodeID, 'ttl': max_ttl, 'msg_type' : msg_type, 'sub_type' : sub_type, 'msg': enc_message_b64, 'sig': sig }
self.snd_socket.send_json(json_data)
self.local_id = self.local_id + 1
def sendFloodingMessage(self, message, max_ttl, msg_type='data', sub_type='std', key=str(), iv=str(), nodeID="255.255.255.255"):
self.log.debug("sendFloodingMessage()")
if len(key) != 16 or len(iv)!=16:
key = self.key
iv = self.iv
lasthop = self.hostname
else:
self.log.debug("sendFloodingMessage, last hop key = old keys")
lasthop = 'old_keys'
#self.key_material[lasthop] = (key, iv)
oldKeyNeighbor = Neighbor()
oldKeyNeighbor.encryptionKey = key
oldKeyNeighbor.encryptionIV = iv
oldKeyNeighbor.pubKey = self.pubKey
self.globalNeighborList[lasthop] = oldKeyNeighbor
self.log.debug("SendFlooding to: nodeID: %s, msg_type=%s" %(nodeID, msg_type))
#Apply asymmetric encryption for unicast messages
if nodeID != "255.255.255.255" and msg_type=="ctrl":
#Apply enrcyption with public key of receiver
if nodeID in self.globalNeighborList:
self.log.debug('Additional public key encryption for unicast CTRL message to %s applied.' % (nodeID))
oaep = PKCS1_OAEP.new(self.globalNeighborList[nodeID].pubKey)
asssymEncMessage = oaep.encrypt(message)
message = asssymEncMessage
else:
self.log.error('Unicast Message to neighbor %s cannot be sent, neighbor is not available in neighbor list' % (nodeID))
self.sendingUserSpaceMessageEvent.set()
return
elif nodeID != "255.255.255.255" and msg_type=="data":
if nodeID in self.globalNeighborList:
self.log.debug('Additional symmetric key encryption for unicast STD message to %s applied.' % (nodeID))
aes = AES.new(self.globalNeighborList[nodeID].unicastSendKey, AES.MODE_CFB, self.globalNeighborList[nodeID].unicastSendIv)
enc_message = aes.encrypt(message)
# to base64
enc_message_b64 = base64.encodestring(enc_message)
message = enc_message_b64
else:
self.log.error('Unicast Message to neighbor %s cannot be sent, neighbor is not available in neighbor list' % (nodeID))
self.sendingUserSpaceMessageEvent.set()
return
#create signature:
sig = self.security_helper.create_signature(message, self.rsaKey)
# encrypt message
aes = AES.new(key, AES.MODE_CFB, iv)
enc_message = aes.encrypt(message)
# to base64
enc_message_b64 = base64.encodestring(enc_message)
if msg_type != "ctrl":
self.log.debug('Source message: plain=%s, encrypted_B64=%s, rec:=%s' % (message, enc_message_b64, nodeID))
json_data = { 'host': self.hostname, 'lasthop': lasthop, 'id': self.local_id, 'rec': nodeID, 'ttl': max_ttl, 'msg_type' : msg_type, 'sub_type' : sub_type, 'msg': enc_message_b64, 'sig': sig }
self.snd_socket.send_json(json_data)
self.local_id = self.local_id + 1