def signOrder(orderHash, private_key):
key = normalize_key(private_key.to_hex())
v, r, s = ecsign(
sha3("\x19Ethereum Signed Message:\n32".encode('utf-8') + orderHash),
key)
return "0x" + v.to_bytes(1, "big").hex() + (
zpad(bytearray_to_bytestr(int_to_32bytearray(r)), 32) +
zpad(bytearray_to_bytestr(int_to_32bytearray(s)), 32)).hex() + "03"
def _sub_hash(value, label):
return sha3(value + sha3(label))
def is_bytes(value):
return isinstance(value, (bytes, bytearray))
def combine(f, g):
return lambda x: f(g(x))
def compose(*functions):
return functools.reduce(combine, functions, lambda x: x)
# ensure we have the *correct* sha3 installed (keccak)
assert codecs.encode(
sha3(b''), 'hex'
) == b'c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470' # noqa
def _sub_hash(value, label):
return sha3(value + sha3(label))
def namehash(name):
node = b'\x00' * 32
if name:
if is_bytes(name):
encoded_name = name
else:
encoded_name = codecs.encode(name, 'utf8')
def signHash(hash, private_key):
key = normalize_key(private_key.to_hex())
v, r, s = ecsign(sha3("\x19Ethereum Signed Message:\n32".encode('utf-8') + hash), key)
return zpad(bytearray_to_bytestr(int_to_32bytearray(r)), 32), zpad(bytearray_to_bytestr(int_to_32bytearray(s)), 32), v
def createOrder(orderHash):
key = normalize_key('0x0000000000000000000000000000000000000000000000000000000000000001')
v, r, s = ecsign(sha3("\x19Ethereum Signed Message:\n32".encode('utf-8') + orderHash), key)
return v, zpad(bytearray_to_bytestr(int_to_32bytearray(r)), 32), zpad(bytearray_to_bytestr(int_to_32bytearray(s)), 32)
contractsFixture.eth_tester.time_travel(int(timestamp + timePassed))
def roughlyEqual(amount1, amount2, tolerance=5 * 10**16):
return abs(amount1 - amount2) < tolerance
def is_bytes(value):
return isinstance(value, (bytes, bytearray))
def combine(f, g):
return lambda x: f(g(x))
def compose(*functions):
return functools.reduce(combine, functions, lambda x: x)
# ensure we have the *correct* sha3 installed (keccak)
assert codecs.encode(sha3(b''), 'hex') == b'c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470' # noqa
def _sub_hash(value, label):
return sha3(value + sha3(label))
def namehash(name):
node = b'\x00' * 32
if name:
if is_bytes(name):
encoded_name = name
else:
encoded_name = codecs.encode(name, 'utf8')
labels = encoded_name.split(b'.')
return compose(*(
