def create_ephemeral_channel(msg_id: bytes, ttl: int, ttr: int,
addr_from: bytes, kyber_pk: bytes,
kyber_sk: bytes, receiver_kyber_pk: bytes,
dilithium_pk: bytes, dilithium_sk: bytes,
prf512_seed: bytes, data: bytes, nonce: int):
sender_kyber = Kyber(kyber_pk, kyber_sk)
sender_kyber.kem_encode(receiver_kyber_pk)
enc_aes256_symkey = bytes(sender_kyber.getCypherText())
aes256_symkey = sender_kyber.getMyKey()
aes = AES(bytes(aes256_symkey))
sender_dilithium = Dilithium(dilithium_pk, dilithium_sk)
ephemeral_data = EphemeralChannelPayload.create(addr_from, prf512_seed,
data)
ephemeral_data.dilithium_sign(msg_id, ttl, ttr, enc_aes256_symkey, nonce,
sender_dilithium)
encrypted_ephemeral_message = EncryptedEphemeralMessage()
encrypted_ephemeral_message._data.msg_id = msg_id
encrypted_ephemeral_message._data.ttl = ttl
encrypted_ephemeral_message._data.ttr = ttr
encrypted_ephemeral_message._data.channel.enc_aes256_symkey = enc_aes256_symkey
encrypted_ephemeral_message._data.nonce = nonce
encrypted_ephemeral_message._data.payload = aes.encrypt(
ephemeral_data.to_json().encode())
return encrypted_ephemeral_message
def create_ephemeral_message(ttl: int,
ttr: int,
addr_from: bytes,
kyber_pk: bytes,
kyber_sk: bytes,
receiver_kyber_pk: bytes,
prf512_seed: bytes,
seq: int,
data: bytes,
nonce: int):
sender_kyber = Kyber(kyber_pk, kyber_sk)
sender_kyber.kem_encode(receiver_kyber_pk)
aes256_symkey = sender_kyber.getMyKey()
aes = AES(aes256_symkey)
ephemeral_data = EphemeralMessagePayload.create(addr_from, data)
encrypted_ephemeral_message = EncryptedEphemeralMessage()
encrypted_ephemeral_message._data.msg_id = RNG.generate(prf512_seed, seq)
encrypted_ephemeral_message._data.ttl = ttl
encrypted_ephemeral_message._data.ttr = ttr
encrypted_ephemeral_message._data.nonce = nonce
encrypted_ephemeral_message._data.payload = aes.encrypt(ephemeral_data.to_json())
return encrypted_ephemeral_message
def test_exchange_keys(self):
alice = Kyber()
bob = Kyber()
# Alice sends her public key to Bob
alice_public_key = alice.getPK()
# Bob receives the public key, derives a secret and a response
bob.kem_encode(alice_public_key)
cypherText = bob.getCypherText()
# Bob sends the cyphertext to alice
valid = alice.kem_decode(cypherText)
# Now Alice and Bob share the same key
alice_key = alice.getMyKey()
bob_key = bob.getMyKey()
self.assertTrue(valid)
self.assertEqual(alice_key, bob_key)
class Kyb():
def __init__(self, PK=None, SK=None):
if not PK or not SK:
self.k = Kyber()
else:
self.k = Kyber(PK, SK)
self.PK = self.k.getPK()
self.SK = self.k.getSK()
def kem_encode(self, kyber_pk):
self.k.kem_encode(kyber_pk)
self.ciphertext = self.k.getCypherText()
self.shared_secret = self.k.getMyKey()
return self.ciphertext, self.shared_secret
def kem_decode(self, ciphertext):
if self.k.kem_decode(ciphertext) == True:
self.shared_secret = self.k.getMyKey()
return self.shared_secret
else:
return False
def test_add_4(self, mock_difficulty_tracker_get):
with set_qrl_dir('wallet_ver1'):
with State() as state:
with mocked_genesis() as custom_genesis:
chain_manager = ChainManager(state)
chain_manager._difficulty_tracker = Mock()
tmp_difficulty = StringToUInt256('2')
tmp_target = DifficultyTracker.get_target(tmp_difficulty)
mock_difficulty_tracker_get.return_value = [
tmp_difficulty, tmp_target
]
alice_xmss = get_alice_xmss()
slave_xmss = XMSS(
XmssFast(alice_xmss.seed, alice_xmss.height))
random_xmss1 = get_random_xmss()
random_kyber1 = Kyber()
random_dilithium1 = Dilithium()
random_xmss2 = get_random_xmss()
random_kyber2 = Kyber()
random_dilithium2 = Dilithium()
message = b'Hello World How are you?'
prf512_seed = b'10192'
custom_genesis.genesis_balance.extend([
qrl_pb2.GenesisBalance(address=random_xmss1.address,
balance=65000000000000000)
])
custom_genesis.genesis_balance.extend([
qrl_pb2.GenesisBalance(address=random_xmss2.address,
balance=65000000000000000)
])
chain_manager.load(custom_genesis)
with mock.patch('qrl.core.misc.ntp.getTime') as time_mock:
time_mock.return_value = 1615270948
lattice_public_key_txn = LatticePublicKey.create(
fee=1,
kyber_pk=random_kyber1.getPK(),
dilithium_pk=random_dilithium1.getPK(),
xmss_pk=random_xmss1.pk)
lattice_public_key_txn._data.nonce = 1
lattice_public_key_txn.sign(random_xmss1)
genesis_block = GenesisBlock()
tmp_block1 = Block.create(
block_number=1,
prev_block_headerhash=genesis_block.headerhash,
prev_block_timestamp=genesis_block.timestamp,
transactions=[lattice_public_key_txn],
miner_address=slave_xmss.address)
# Mine the nonce
while not PoWValidator().validate_mining_nonce(
state, tmp_block1.blockheader, False):
tmp_block1.set_nonces(tmp_block1.mining_nonce + 1,
0)
res = chain_manager.add_block(block=tmp_block1)
self.assertTrue(res)
# Need to move forward the time to align with block times
time_mock.return_value += config.dev.minimum_minting_delay * 2
encrypted_eph_message = create_ephemeral_channel(
msg_id=lattice_public_key_txn.txhash,
ttl=time_mock.return_value,
ttr=0,
addr_from=random_xmss2.address,
kyber_pk=random_kyber2.getPK(),
kyber_sk=random_kyber2.getSK(),
receiver_kyber_pk=random_kyber1.getPK(),
dilithium_pk=random_dilithium2.getPK(),
dilithium_sk=random_dilithium2.getSK(),
prf512_seed=prf512_seed,
data=message,
nonce=1)
chain_manager.state.update_ephemeral(
encrypted_eph_message)
eph_metadata = chain_manager.state.get_ephemeral_metadata(
lattice_public_key_txn.txhash)
# Decrypting Payload
encrypted_eph_message = eph_metadata.encrypted_ephemeral_message_list[
0]
encrypted_payload = encrypted_eph_message.payload
random_kyber1.kem_decode(
encrypted_eph_message.channel.enc_aes256_symkey)
aes_key = bytes(random_kyber1.getMyKey())
myAES = AES(aes_key)
decrypted_payload = myAES.decrypt(encrypted_payload)
ephemeral_channel_payload = EphemeralChannelPayload.from_json(
decrypted_payload)
self.assertEqual(ephemeral_channel_payload.prf512_seed,
b'10192')
self.assertEqual(ephemeral_channel_payload.data,
b'Hello World How are you?')
# TODO (cyyber): Add Ephemeral Testing code using Naive RNG
tmp_block2 = Block.create(
block_number=2,
prev_block_headerhash=tmp_block1.headerhash,
prev_block_timestamp=tmp_block1.timestamp,
transactions=[],
miner_address=slave_xmss.address)
# Mine the nonce
while not PoWValidator().validate_mining_nonce(
state, tmp_block2.blockheader, False):
tmp_block2.set_nonces(tmp_block2.mining_nonce + 1,
0)
res = chain_manager.add_block(block=tmp_block2)
self.assertTrue(res)
# Need to move forward the time to align with block times
time_mock.return_value += config.dev.minimum_minting_delay * 2
tmp_block3 = Block.create(
block_number=3,
prev_block_headerhash=tmp_block2.headerhash,
prev_block_timestamp=tmp_block1.timestamp,
transactions=[],
miner_address=slave_xmss.address)
# Mine the nonce
while not PoWValidator().validate_mining_nonce(
state, tmp_block3.blockheader, False):
tmp_block3.set_nonces(tmp_block3.mining_nonce + 1,
0)
res = chain_manager.add_block(block=tmp_block3)
self.assertTrue(res)
time_mock.return_value += config.dev.minimum_minting_delay
tmp_block4 = Block.create(
block_number=4,
prev_block_headerhash=tmp_block3.headerhash,
prev_block_timestamp=tmp_block1.timestamp,
transactions=[],
miner_address=slave_xmss.address)
# Mine the nonce
while not PoWValidator().validate_mining_nonce(
state, tmp_block4.blockheader, False):
tmp_block4.set_nonces(tmp_block4.mining_nonce + 1,
0)
res = chain_manager.add_block(block=tmp_block4)
self.assertTrue(res)
address_state = chain_manager.get_address(
random_xmss1.address)
self.assertEqual(
address_state.latticePK_list[0].kyber_pk,
lattice_public_key_txn.kyber_pk)
self.assertEqual(
address_state.latticePK_list[0].dilithium_pk,
lattice_public_key_txn.dilithium_pk)
self.assertEqual(address_state.address,
lattice_public_key_txn.addr_from)
random_xmss1_state = chain_manager.get_address(
random_xmss1.address)
self.assertEqual(64999999999999999,
random_xmss1_state.balance)