def op_checkmultisig(stack, z):
if len(stack) < 1:
return False
n = decode_num(stack.pop())
if len(stack) < n + 1:
return False
sec_pubkeys = []
for _ in range(n):
sec_pubkeys.append(stack.pop())
m = decode_num(stack.pop())
if len(stack) < m + 1:
return False
der_signatures = []
for _ in range(m):
der_signatures.append(stack.pop()[:-1])
stack.pop()
try:
points = [S256Point.parse(sec) for sec in sec_pubkeys]
sigs = [Signature.parse(der) for der in der_signatures]
for sig in sigs:
if len(points) == 0:
print("signatures no good or not in right order")
return False
while points:
point = points.pop(0)
if point.verify(z, sig):
break
stack.append(encode_num(1))
except (ValueError, SyntaxError):
return False
return True
def test_op_checksig(self):
z = 0x7c076ff316692a3d7eb3c3bb0f8b1488cf72e1afcd929e29307032997a838a3d
sec = bytes.fromhex(
'04887387e452b8eacc4acfde10d9aaf7f6d9a0f975aabb10d006e4da568744d06c61de6d95231cd89026e286df3b6ae4a894a3378e393e93a0f45b666329a0ae34'
)
sig = bytes.fromhex(
'3045022000eff69ef2b1bd93a66ed5219add4fb51e11a840f404876325a1e8ffe0529a2c022100c7207fee197d27c618aea621406f6bf5ef6fca38681d82b2f06fddbdce6feab601'
)
stack = [sig, sec]
self.assertTrue(op_checksig(stack, z))
self.assertEqual(decode_num(stack[0]), 1)
def test_op_checkmultisig(self):
z = 0xe71bfa115715d6fd33796948126f40a8cdd39f187e4afb03896795189fe1423c
sig1 = bytes.fromhex(
'3045022100dc92655fe37036f47756db8102e0d7d5e28b3beb83a8fef4f5dc0559bddfb94e02205a36d4e4e6c7fcd16658c50783e00c341609977aed3ad00937bf4ee942a8993701'
)
sig2 = bytes.fromhex(
'3045022100da6bee3c93766232079a01639d07fa869598749729ae323eab8eef53577d611b02207bef15429dcadce2121ea07f233115c6f09034c0be68db99980b9a6c5e75402201'
)
sec1 = bytes.fromhex(
'022626e955ea6ea6d98850c994f9107b036b1334f18ca8830bfff1295d21cfdb70'
)
sec2 = bytes.fromhex(
'03b287eaf122eea69030a0e9feed096bed8045c8b98bec453e1ffac7fbdbd4bb71'
)
stack = [b'', sig1, sig2, b'\x02', sec1, sec2, b'\x02']
self.assertTrue(op_checkmultisig(stack, z))
self.assertEqual(decode_num(stack[0]), 1)
import op n = 65 e = op.encode_num(n) print(e) d = op.decode_num(e) print(d)
