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chore(tests): remove params for unused checks
[no changelog]
(cherry picked from commit ff659a82d1)
This commit is contained in:
Marek Polak
Martin Milata
parent
9a22d570f2
commit
e90cf36624
@ -3,8 +3,6 @@ from common import H_, await_result, unittest # isort:skip
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import storage.cache
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from trezor import wire
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from trezor.crypto import bip32
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from trezor.crypto.curve import bip340, secp256k1
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from trezor.crypto.hashlib import sha256
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from trezor.enums import InputScriptType, OutputScriptType
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from trezor.messages import (
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AuthorizeCoinJoin,
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@ -13,9 +11,7 @@ from trezor.messages import (
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TxInput,
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TxOutput,
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)
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from trezor.utils import HashWriter
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from apps.bitcoin import writers
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from apps.bitcoin.authorization import FEE_RATE_DECIMALS, CoinJoinAuthorization
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from apps.bitcoin.sign_tx.approvers import CoinJoinApprover
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from apps.bitcoin.sign_tx.bitcoin import Bitcoin
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@ -31,10 +27,6 @@ class TestApprover(unittest.TestCase):
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self.min_registrable_amount = 5000
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self.coordinator_name = "www.example.com"
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# Private key for signing and masking CoinJoin requests.
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# m/0h for "all all ... all" seed.
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self.private_key = b"?S\ti\x8b\xc5o{,\xab\x03\x194\xea\xa8[_:\xeb\xdf\xce\xef\xe50\xf17D\x98`\xb9dj"
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self.node = bip32.HDNode(
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depth=0,
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fingerprint=0,
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@ -43,9 +35,6 @@ class TestApprover(unittest.TestCase):
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private_key=b"\x01" * 32,
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curve_name="secp256k1",
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)
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self.tweaked_node_pubkey = b"\x02" + bip340.tweak_public_key(
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self.node.public_key()[1:]
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)
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self.msg_auth = AuthorizeCoinJoin(
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coordinator=self.coordinator_name,
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@ -61,42 +50,12 @@ class TestApprover(unittest.TestCase):
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storage.cache.start_session()
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def make_coinjoin_request(self, inputs):
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mask_public_key = secp256k1.publickey(self.private_key)
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coinjoin_flags = bytearray()
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for txi in inputs:
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shared_secret = secp256k1.multiply(
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self.private_key, self.tweaked_node_pubkey
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)[1:33]
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h_mask = HashWriter(sha256())
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writers.write_bytes_fixed(h_mask, shared_secret, 32)
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writers.write_bytes_reversed(h_mask, txi.prev_hash, writers.TX_HASH_SIZE)
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writers.write_uint32(h_mask, txi.prev_index)
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mask = h_mask.get_digest()[0] & 1
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signable = txi.script_type == InputScriptType.SPENDTAPROOT
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txi.coinjoin_flags = signable ^ mask
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coinjoin_flags.append(txi.coinjoin_flags)
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# Compute CoinJoin request signature.
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h_request = HashWriter(sha256(b"CJR1"))
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writers.write_bytes_prefixed(h_request, self.coordinator_name.encode())
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writers.write_uint32(h_request, self.coin.slip44)
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writers.write_uint32(
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h_request, int(self.fee_rate_percent * 10**FEE_RATE_DECIMALS)
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)
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writers.write_uint64(h_request, self.no_fee_threshold)
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writers.write_uint64(h_request, self.min_registrable_amount)
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writers.write_bytes_fixed(h_request, mask_public_key, 33)
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writers.write_bytes_prefixed(h_request, coinjoin_flags)
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writers.write_bytes_fixed(h_request, sha256().digest(), 32)
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writers.write_bytes_fixed(h_request, sha256().digest(), 32)
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signature = secp256k1.sign(self.private_key, h_request.get_digest())
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return CoinJoinRequest(
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fee_rate=int(self.fee_rate_percent * 10**FEE_RATE_DECIMALS),
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no_fee_threshold=self.no_fee_threshold,
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min_registrable_amount=self.min_registrable_amount,
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mask_public_key=mask_public_key,
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signature=signature,
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mask_public_key=bytearray(),
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signature=bytearray(),
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)
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def test_coinjoin_lots_of_inputs(self):
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@ -1,7 +1,7 @@
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from collections import namedtuple
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from hashlib import sha256
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from ecdsa import ECDH, SECP256k1, SigningKey
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from ecdsa import SECP256k1, SigningKey
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from trezorlib import btc, messages
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@ -113,60 +113,15 @@ def make_coinjoin_request(
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no_fee_threshold=1_000_000,
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min_registrable_amount=5_000,
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):
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# Reuse the signing key as the masking key to ensure deterministic behavior.
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# Note that in production the masking key should be generated randomly.
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ecdh = ECDH(curve=SECP256k1)
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ecdh.load_private_key(payment_req_signer)
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mask_public_key = ecdh.get_public_key().to_string("compressed")
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# Process inputs.
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h_prevouts = sha256()
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coinjoin_flags = bytearray()
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for i, (txi, script_pubkey) in enumerate(zip(inputs, input_script_pubkeys)):
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# Add input to prevouts hash.
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h_prevouts.update(bytes(reversed(txi.prev_hash)))
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h_prevouts.update(txi.prev_index.to_bytes(4, "little"))
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# Set signable flag in coinjoin_flags.
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if len(script_pubkey) == 34 and script_pubkey.startswith(b"\x51\x20"):
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ecdh.load_received_public_key_bytes(b"\x02" + script_pubkey[2:])
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shared_secret = ecdh.generate_sharedsecret_bytes()
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h_mask = sha256(shared_secret)
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h_mask.update(bytes(reversed(txi.prev_hash)))
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h_mask.update(txi.prev_index.to_bytes(4, "little"))
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mask = h_mask.digest()[0] & 1
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signable = bool(txi.address_n)
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txi.coinjoin_flags = signable ^ mask
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else:
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txi.coinjoin_flags = 0
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for i, txi in enumerate(inputs):
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# Set no_fee flag in coinjoin_flags.
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txi.coinjoin_flags |= (i in no_fee_indices) << 1
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coinjoin_flags.append(txi.coinjoin_flags)
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# Process outputs.
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h_outputs = sha256()
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for txo, script_pubkey in zip(outputs, output_script_pubkeys):
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h_outputs.update(txo.amount.to_bytes(8, "little"))
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hash_bytes_prefixed(h_outputs, script_pubkey)
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# Hash the CoinJoin request.
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h_request = sha256(b"CJR1")
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hash_bytes_prefixed(h_request, coordinator_name.encode())
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h_request.update(SLIP44.to_bytes(4, "little"))
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h_request.update(fee_rate.to_bytes(4, "little"))
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h_request.update(no_fee_threshold.to_bytes(8, "little"))
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h_request.update(min_registrable_amount.to_bytes(8, "little"))
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h_request.update(mask_public_key)
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hash_bytes_prefixed(h_request, coinjoin_flags)
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h_request.update(h_prevouts.digest())
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h_request.update(h_outputs.digest())
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return messages.CoinJoinRequest(
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fee_rate=fee_rate,
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no_fee_threshold=no_fee_threshold,
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min_registrable_amount=min_registrable_amount,
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mask_public_key=mask_public_key,
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signature=payment_req_signer.sign_digest_deterministic(h_request.digest()),
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mask_public_key=b"",
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signature=b"",
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)
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