def test_l4block_signing_hashing(self):
block = make_l4_block()
sig = crypto.sign_l4_block(blake2b, secp256k1, key, block)
self.assertEqual(
sig,
"MEUCIQDwOwwYlWivucunKJXm0KB+7BsEiHDmEKLg2wL6MKJIsQIgdtjZRBimLmsZjOcCkCmalLHf0sF2exAMsluuVxMaLvk="
)
sig = crypto.sign_l4_block(sha256, secp256k1, key, block)
self.assertEqual(
sig,
"MEQCIHcVPm+NEIEJXCeoWgX94fo7Y+kMhZGKtroh94iNZTTbAiB7qWPI3B4vpj0Ir5+X0gHv/m9Xq6abQnWRagH64Xu4OA=="
)
sig = crypto.sign_l4_block(sha3_256, secp256k1, key, block)
self.assertEqual(
sig,
"MEQCIDGi9WC8097OtOUXahHm0/uJP5PUv6isk1NVvulbQ2c2AiBULyExoupsgJ/2KFKDQYHF1qQa5++cZxFxyqlXPpY0lA=="
)
block_hash, nonce = crypto.pow_l4_block(blake2b, block)
self.assertEqual(block_hash,
"ACZ1yEGzRKKDxm9jqk5j8U6QRyeVHzqRjcS/G2gnEy8=")
self.assertEqual(nonce, 82)
block_hash, nonce = crypto.pow_l4_block(sha256, block)
self.assertEqual(block_hash,
"AEULvMdpuf6Sj7M3HxSCZLjQODViHxRRKMy4Ze0VrLY=")
self.assertEqual(nonce, 3)
block_hash, nonce = crypto.pow_l4_block(sha3_256, block)
self.assertEqual(block_hash,
"AOEPG+CTLsfaa92DpnOrkro+8WLGUKSKD28I+kqS9Lo=")
self.assertEqual(nonce, 182)
def sign_block(self, signable_block: "model.BlockModel") -> str:
"""Sign a block with this class' keys
Args:
block: BlockModel to sign
Returns:
Base64 encoded string of the block signature
Raises:
exceptions.InvalidNodeLevel when invalid level on self
RuntimeError when no private key is set on self
"""
if self.priv is None:
raise RuntimeError("No private key has been set for signing")
if self.level == 1:
return crypto.sign_l1_block(self.hash, self.encryption, self.priv,
signable_block)
elif self.level == 2:
return crypto.sign_l2_block(self.hash, self.encryption, self.priv,
signable_block)
elif self.level == 3:
return crypto.sign_l3_block(self.hash, self.encryption, self.priv,
signable_block)
elif self.level == 4:
return crypto.sign_l4_block(self.hash, self.encryption, self.priv,
signable_block)
elif self.level == 5:
return crypto.sign_l5_block(self.hash, self.encryption, self.priv,
signable_block)
else:
raise exceptions.InvalidNodeLevel(
f"Node level {self.level} not implemented yet")
def test_l4block_trust_verifying(self):
block = make_l4_block()
sig = crypto.sign_l4_block(blake2b, secp256k1, key, block)
block.proof = sig
block.scheme = "trust"
self.assertTrue(crypto.verify_l4_block_trust(blake2b, secp256k1, key.pubkey, block))
valid_block = copy.deepcopy(block)
block.dc_id = "forged"
self.assertFalse(crypto.verify_l4_block_trust(blake2b, secp256k1, key.pubkey, block))
block = copy.deepcopy(valid_block)
block.block_id = "forged"
self.assertFalse(crypto.verify_l4_block_trust(blake2b, secp256k1, key.pubkey, block))
block = copy.deepcopy(valid_block)
block.timestamp = "forged"
self.assertFalse(crypto.verify_l4_block_trust(blake2b, secp256k1, key.pubkey, block))
block = copy.deepcopy(valid_block)
block.prev_proof = "forged=="
self.assertFalse(crypto.verify_l4_block_trust(blake2b, secp256k1, key.pubkey, block))
block = copy.deepcopy(valid_block)
block.l1_dc_id = "forged"
self.assertFalse(crypto.verify_l4_block_trust(blake2b, secp256k1, key.pubkey, block))
block = copy.deepcopy(valid_block)
block.l1_block_id = "forged"
self.assertFalse(crypto.verify_l4_block_trust(blake2b, secp256k1, key.pubkey, block))
block = copy.deepcopy(valid_block)
block.l1_proof = "forged"
self.assertFalse(crypto.verify_l4_block_trust(blake2b, secp256k1, key.pubkey, block))
block = copy.deepcopy(valid_block)
block.validations[0]["l3_dc_id"] = "forged"
self.assertFalse(crypto.verify_l4_block_trust(blake2b, secp256k1, key.pubkey, block))
block = copy.deepcopy(valid_block)
block.validations[0]["l3_block_id"] = "forged"
self.assertFalse(crypto.verify_l4_block_trust(blake2b, secp256k1, key.pubkey, block))
block = copy.deepcopy(valid_block)
block.validations[0]["l3_proof"] = "forged"
self.assertFalse(crypto.verify_l4_block_trust(blake2b, secp256k1, key.pubkey, block))
block = copy.deepcopy(valid_block)
block.validations[0]["valid"] = False
self.assertFalse(crypto.verify_l4_block_trust(blake2b, secp256k1, key.pubkey, block))
block = copy.deepcopy(valid_block)
block.proof = "MEQCIF+o3DHBiTbpw8X6W4/yOuPF/FfANIiNnG0mFLgjBAjuAiAe/QAHN8ufmHMeRvHFItdrzVHFORGED4/msipzFORGED=="
self.assertFalse(crypto.verify_l4_block_trust(blake2b, secp256k1, key.pubkey, block))