41 lines
1.7 KiB
Python
41 lines
1.7 KiB
Python
from typing import List
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from blspy import AugSchemeMPL, G2Element, PrivateKey
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from chia.types.blockchain_format.sized_bytes import bytes32
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from chia.types.coin_solution import CoinSolution
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from chia.util.condition_tools import conditions_by_opcode, conditions_for_solution, pkm_pairs_for_conditions_dict
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from tests.core.make_block_generator import GROUP_ORDER, int_to_public_key
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from chia.util.block_tools import test_constants
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class KeyTool(dict):
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@classmethod
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def __new__(cls, *args):
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return dict.__new__(*args)
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def add_secret_exponents(self, secret_exponents: List[int]) -> None:
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for _ in secret_exponents:
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self[bytes(int_to_public_key(_))] = _ % GROUP_ORDER
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def sign(self, public_key: bytes, message_hash: bytes32) -> G2Element:
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secret_exponent = self.get(public_key)
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if not secret_exponent:
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raise ValueError("unknown pubkey %s" % public_key.hex())
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bls_private_key = PrivateKey.from_bytes(secret_exponent.to_bytes(32, "big"))
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return AugSchemeMPL.sign(bls_private_key, message_hash)
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def signature_for_solution(self, coin_solution: CoinSolution, additional_data: bytes) -> AugSchemeMPL:
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signatures = []
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err, conditions, cost = conditions_for_solution(
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coin_solution.puzzle_reveal, coin_solution.solution, test_constants.MAX_BLOCK_COST_CLVM
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)
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assert conditions is not None
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conditions_dict = conditions_by_opcode(conditions)
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for public_key, message_hash in pkm_pairs_for_conditions_dict(
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conditions_dict, coin_solution.coin.name(), additional_data
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):
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signature = self.sign(bytes(public_key), message_hash)
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signatures.append(signature)
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return AugSchemeMPL.aggregate(signatures)
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