def test_verify(
web3,
token_network,
signature_test_contract,
get_accounts,
create_channel: Callable,
create_balance_proof,
):
""" ECVerify.ecverify returns the correct address
This test checks if the signature test contract returns the correct
addresses on the balance hash signed by both ends of a channel """
(A, B) = get_accounts(2)
channel_identifier = create_channel(A, B)[0]
balance_proof_A = create_balance_proof(channel_identifier, A, 2, 0, 3)
signature = balance_proof_A[3]
balance_proof_hash = hash_balance_proof(token_network.address,
int(web3.version.network),
channel_identifier,
*balance_proof_A[:3])
address = signature_test_contract.functions.verify(balance_proof_hash,
signature).call()
assert address == A
balance_proof_B = create_balance_proof(channel_identifier, B, 0, 0, 0)
signature = balance_proof_B[3]
balance_proof_hash = hash_balance_proof(token_network.address,
int(web3.version.network),
channel_identifier,
*balance_proof_B[:3])
address = signature_test_contract.functions.verify(balance_proof_hash,
signature).call()
assert address == B
def test_ecrecover_output(
web3,
token_network,
signature_test_contract,
get_accounts,
create_channel,
create_balance_proof,
):
""" ecrecover returns the address that was used to sign a balance proof """
(A, B) = get_accounts(2)
channel_identifier = create_channel(A, B)[0]
balance_proof_A = create_balance_proof(channel_identifier, A, 2, 0, 3)
signature = balance_proof_A[3]
r = signature[:32]
s = signature[32:64]
v = signature[64:]
balance_proof_hash = hash_balance_proof(
token_network.address,
int(web3.version.network),
channel_identifier,
*balance_proof_A[:3],
)
address = signature_test_contract.functions.verifyEcrecoverOutput(
balance_proof_hash,
r,
s,
int.from_bytes(v, byteorder='big'),
).call()
assert address == A
