def sign_p2pk(tx, i, priv, pub, hashtype = SIGHASH_ALL):
assert isinstance(tx, dict)
i = int(i)
assert isinstance(priv, int)
assert isinstance(pub, bytes)
prev_script = script.make_p2pk(pub)
txhash = sighash(tx, i, prev_script, hashtype)
sig = ecdsa.sign(txhash, priv)
sig = ecdsa.serialize_sig(sig) + convert.int_to_byte(hashtype)
tx["ins"][i]["script"] = script.serialize([sig])
def test_all(self):
for _ in range(10):
msghash = convert.random_bytes(32)
priv = ecdsa.random_priv()
pub = ecdsa.priv_to_pub(priv)
sig = ecdsa.sign(msghash, priv)
self.assertTrue(
ecdsa.verify(msghash, sig, pub),
"Verification error"
)
self.assertEqual(
pub,
ecdsa.recover(msghash, sig),
"Recovery failed"
)
def sign_multisig(tx, i, prev_script, privs, pubs, hashtype = SIGHASH_ALL):
assert isinstance(tx, dict)
i = int(i)
assert len(privs) == len(pubs)
txhash = sighash(tx, i, prev_script, hashtype)
s = [
script.Opcode.OP_0,
]
for j in range(len(privs)):
priv = privs[j]
pub = pubs[j]
sig = ecdsa.sign(txhash, priv)
sig = ecdsa.serialize_sig(sig) + convert.int_to_byte(hashtype)
s.append(sig)
tx["ins"][i]["script"] = script.serialize(s)
