def main():
interest = Interest()
interest.wireDecode(TlvInterest)
# Use a hard-wired secret for testing. In a real application the signer
# ensures that the verifier knows the shared key and its keyName.
key = Blob(bytearray([
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
]))
if KeyChain.verifyInterestWithHmacWithSha256(interest, key):
dump("Hard-coded interest signature verification: VERIFIED")
else:
dump("Hard-coded interest signature verification: FAILED")
freshInterest = Interest(Name("/ndn/abc"))
freshInterest.setMustBeFresh(False)
keyName = Name("key1")
dump("Signing fresh interest", freshInterest.getName().toUri())
KeyChain.signWithHmacWithSha256(freshInterest, key, keyName)
if KeyChain.verifyInterestWithHmacWithSha256(freshInterest, key):
dump("Freshly-signed interest signature verification: VERIFIED")
else:
dump("Freshly-signed interest signature verification: FAILED")
def main():
# Silence the warning from Interest wire encode.
Interest.setDefaultCanBePrefix(True)
interest = Interest()
interest.wireDecode(TlvInterest)
# Use a hard-wired secret for testing. In a real application the signer
# ensures that the verifier knows the shared key and its keyName.
key = Blob(bytearray([
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
]))
if KeyChain.verifyInterestWithHmacWithSha256(interest, key):
dump("Hard-coded interest signature verification: VERIFIED")
else:
dump("Hard-coded interest signature verification: FAILED")
freshInterest = Interest(Name("/ndn/abc"))
freshInterest.setMustBeFresh(False)
keyName = Name("key1")
dump("Signing fresh interest", freshInterest.getName().toUri())
KeyChain.signWithHmacWithSha256(freshInterest, key, keyName)
if KeyChain.verifyInterestWithHmacWithSha256(freshInterest, key):
dump("Freshly-signed interest signature verification: VERIFIED")
else:
dump("Freshly-signed interest signature verification: FAILED")
def onInterest(self, prefix, interest, face, interestFilterId, filter):
key = Blob(
bytearray([
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
]))
print "Got onboarding interest with name: %s" % (
interest.getName().toUri())
try:
if KeyChain.verifyInterestWithHmacWithSha256(interest, key):
dump("Onboarding interest signature verification: VERIFIED")
else:
dump("Onboarding interest signature verification: FAILED")
except:
print "Exception when attempting to verify onboarding interest signature."
data = Data(interest.getName())
signature = HmacWithSha256Signature()
signature.getKeyLocator().setType(KeyLocatorType.KEYNAME)
signature.getKeyLocator().setKeyName(Name("key1"))
data.setSignature(signature)
data.setContent("")
dump("Signing onboarding response data packet", data.getName().toUri())
KeyChain.signWithHmacWithSha256(data, key)
deviceID = str(interest.getName().getSubName(-3, 1).toUri()[1:])
deviceIP = str(interest.getName().getSubName(-4, 1).toUri()[1:])
print "Device ip: %s" % (deviceIP)
print "Device ID: %s" % (deviceID)
routeToRegister = str(Name(deviceID))
registerRouteWithNameAndIp(routeToRegister, deviceIP)
thread = threading.Thread(target=run_data_fetcher, args=(deviceID))
thread.daemon = True # Daemonize thread
thread.start()
#commandRouteToRegister = "/device/command/" + deviceID
#registerRouteWithNameAndIp(commandRouteToRegister, deviceIP)
face.putData(data)
with open('%s' % (deviceIDListName), 'a') as the_file:
the_file.seek(0)
read_file = open('%s' % (deviceIDListName), 'r')
if deviceID not in read_file.read():
the_file.write('%s\n' % (deviceID))
def _onInterest(self, prefix, interest, face, interestFilterId, filter):
"""
Process a received broadcast interest.
"""
# Verify the HMAC signature.
verified = False
try:
verified = KeyChain.verifyInterestWithHmacWithSha256(
interest, self._hmacKey)
except:
# Treat a decoding failure as verification failure.
pass
if not verified:
# Signature verification failure.
logging.getLogger(__name__).info(
"Dropping Interest with failed signature: %s",
interest.getName().toUri())
return
encoding = interest.getName().get(
self._applicationBroadcastPrefix.size()).getValue()
receivedStateVector = StateVectorSync2018.decodeStateVector(encoding)
logging.getLogger(__name__).info("Received broadcast state vector %s",
str(receivedStateVector))
(syncStates, needToReply) = self._mergeStateVector(receivedStateVector)
if len(syncStates) > 0:
# Inform the application up new sync states.
try:
self._onReceivedSyncState(syncStates)
except:
logging.exception("Error in onReceivedSyncState")
if needToReply:
# Inform other members who may need to be updated.
logging.getLogger(__name__).info(
"Received state vector was outdated. Broadcast state vector %s",
str(self._stateVector))
self._broadcastStateVector()
