def sign_tx(pks: List[str], spend_bundle: SpendBundle):
# This field is the ADDITIONAL_DATA found in the constants
additional_data: bytes = bytes.fromhex(
"ccd5bb71183532bff220ba46c268991a3ff07eb358e8255a65c30a2dce0e5fbb")
puzzle_hash_to_sk: Dict[bytes32, PrivateKey] = {}
for p in pks:
child_sk: PrivateKey = PrivateKey.from_bytes(bytes.fromhex(p))
# master_private_key = PrivateKey.from_bytes(
# bytes.fromhex(p))
# child_sk = master_sk_to_wallet_sk(master_private_key, 242)
child_pk: G1Element = child_sk.get_g1()
puzzle = puzzle_for_pk(child_pk)
puzzle_hash = puzzle.get_tree_hash()
puzzle_hash_to_sk[puzzle_hash] = child_sk
aggregate_signature: G2Element = G2Element()
for coin_solution in spend_bundle.coin_solutions:
if coin_solution.coin.puzzle_hash not in puzzle_hash_to_sk:
return
sk: PrivateKey = puzzle_hash_to_sk[coin_solution.coin.puzzle_hash]
synthetic_secret_key: PrivateKey = calculate_synthetic_secret_key(
sk, DEFAULT_HIDDEN_PUZZLE_HASH)
err, conditions_dict, cost = conditions_dict_for_solution(
coin_solution.puzzle_reveal, coin_solution.solution, 11000000000)
if err or conditions_dict is None:
print(
f"Sign transaction failed, con:{conditions_dict}, error: {err}"
)
return
pk_msgs = pkm_pairs_for_conditions_dict(
conditions_dict, bytes(coin_solution.coin.name()), additional_data)
assert len(pk_msgs) == 1
_, msg = pk_msgs[0]
signature = AugSchemeMPL.sign(synthetic_secret_key, msg)
aggregate_signature = AugSchemeMPL.aggregate(
[aggregate_signature, signature])
new_spend_bundle = SpendBundle(spend_bundle.coin_solutions,
aggregate_signature)
# print(json.dumps(new_spend_bundle.to_json_dict()))
return json.dumps(new_spend_bundle.to_json_dict())
def round_trip(spend_bundle: SpendBundle, **kwargs):
json_dict = spend_bundle.to_json_dict(**kwargs)
if kwargs.get("include_legacy_keys", True):
assert "coin_solutions" in json_dict
else:
assert "coin_solutions" not in json_dict
if kwargs.get("exclude_modern_keys", True):
assert "coin_spends" not in json_dict
else:
assert "coin_spends" in json_dict
if "coin_spends" in json_dict and "coin_solutions" in json_dict:
del json_dict["coin_solutions"]
sb = SpendBundle.from_json_dict(json_dict)
json_dict_2 = sb.to_json_dict()
sb = SpendBundle.from_json_dict(json_dict_2)
json_dict_3 = sb.to_json_dict()
assert json_dict_2 == json_dict_3
async def push_tx(self, spend_bundle: SpendBundle):
return await self.fetch("push_tx",
{"spend_bundle": spend_bundle.to_json_dict()})
def sign_tx(intermediate_sk: PrivateKey, spend_bundle: SpendBundle,
use_hardened_keys: bool):
"""
Takes in an unsigned transaction (called a spend bundle in chia), and a 24 word mnemonic (master sk)
and generates the aggregate BLS signature for the transaction.
"""
# This field is the ADDITIONAL_DATA found in the constants
additional_data: bytes = bytes.fromhex(
"ccd5bb71183532bff220ba46c268991a3ff07eb358e8255a65c30a2dce0e5fbb")
puzzle_hash_to_sk: Dict[bytes32, PrivateKey] = {}
if use_hardened_keys:
# Change this loop to scan more keys if you have more
for i in range(5000):
child_sk: PrivateKey = AugSchemeMPL.derive_child_sk(
intermediate_sk, i)
child_pk: G1Element = child_sk.get_g1()
puzzle = puzzle_for_pk(child_pk)
puzzle_hash = puzzle.get_tree_hash()
puzzle_hash_to_sk[puzzle_hash] = child_sk
else:
# Change this loop to scan more keys if you have more
for i in range(5000):
child_sk: PrivateKey = AugSchemeMPL.derive_child_sk_unhardened(
intermediate_sk, i)
child_pk: G1Element = child_sk.get_g1()
puzzle = puzzle_for_pk(child_pk)
puzzle_hash = puzzle.get_tree_hash()
puzzle_hash_to_sk[puzzle_hash] = child_sk
aggregate_signature: G2Element = G2Element()
for coin_solution in spend_bundle.coin_solutions:
if coin_solution.coin.puzzle_hash not in puzzle_hash_to_sk:
print(
f"Puzzle hash {coin_solution.coin.puzzle_hash} not found for this key."
)
return
sk: PrivateKey = puzzle_hash_to_sk[coin_solution.coin.puzzle_hash]
synthetic_secret_key: PrivateKey = calculate_synthetic_secret_key(
sk, DEFAULT_HIDDEN_PUZZLE_HASH)
err, conditions_dict, cost = conditions_dict_for_solution(
coin_solution.puzzle_reveal, coin_solution.solution, 11000000000)
if err or conditions_dict is None:
print(
f"Sign transaction failed, con:{conditions_dict}, error: {err}"
)
return
pk_msgs = pkm_pairs_for_conditions_dict(
conditions_dict, bytes(coin_solution.coin.name()), additional_data)
assert len(pk_msgs) == 1
_, msg = pk_msgs[0]
signature = AugSchemeMPL.sign(synthetic_secret_key, msg)
aggregate_signature = AugSchemeMPL.aggregate(
[aggregate_signature, signature])
new_spend_bundle = SpendBundle(spend_bundle.coin_solutions,
aggregate_signature)
print("")
print("Signed spend bundle JSON:\n")
print(json.dumps(new_spend_bundle.to_json_dict()))
