def __get_multisig_script_sig__(self, script_sig,
keys, signatures,
script_code,
redeem_script,
n, amount=None):
sig_map = {keys[i]:signatures[i] for i in range(len(keys))}
pub_keys = get_multisig_public_keys(redeem_script)
p2wsh = True if isinstance(script_sig, list) else False
if not p2wsh:
s = get_stream(script_sig)
o, d = read_opcode(s)
while o:
o, d = read_opcode(s)
if d and is_valid_signature_encoding(d):
for i in range(4):
sighash = self.sig_hash(n, script_pub_key=script_code, sighash_type=d[-1])
sighash = s2rh(sighash) if isinstance(sighash, str) else sighash
pk = public_key_recovery(d[:-1], sighash, i, hex=0)
if pk in pub_keys:
sig_map[pk] = d
break
# recreate script sig
r = [OP_0]
for k in pub_keys:
try:
r.append(op_push_data(sig_map[k]))
except:
pass
r += [op_push_data(redeem_script)]
else:
for w in script_sig:
if isinstance(w, str):
w = bytes.fromhex(w)
if w and is_valid_signature_encoding(w):
d = w[:-1]
for i in range(4):
sighash = self.sig_hash_segwit(n, amount,
script_pub_key=script_code,
sighash_type=w[-1])
pk = public_key_recovery(d, sighash, i, hex=0)
if pk in pub_keys:
sig_map[pk] = w
break
r = [b""]
for k in pub_keys:
try:
r.append(sig_map[k])
except:
pass
r += [redeem_script]
return r
def __get_bare_multisig_script_sig__(self, script_sig, script_pub_key,
keys, signatures, n):
sig_map = {keys[i]:signatures[i] for i in range(len(keys))}
pub_keys = get_multisig_public_keys(script_pub_key)
s = get_stream(script_sig)
o, d = read_opcode(s)
while o:
o, d = read_opcode(s)
if d and is_valid_signature_encoding(d):
for i in range(4):
sighash = self.sig_hash(n, script_pub_key=script_pub_key, sighash_type=d[-1])
sighash = s2rh(sighash) if isinstance(sighash, str) else sighash
pk = public_key_recovery(d[:-1], sighash, i, hex=0)
if pk in pub_keys:
sig_map[pk] = d
break
# recreate script sig
r = [OP_0]
for k in pub_keys:
try:
r.append(op_push_data(sig_map[k]))
except:
pass
return r
def is_valid_signature_encoding(sig):
return __parent__.is_valid_signature_encoding(sig)
def test_is_valid_signature_encoding():
s = "3044022047ac8e878352d3ebbde1c94ce3a10d057c24175747116f8288e5d794" \
"d12d482f0220217f36a485cae903c713331d877c1f64677e3622ad4010726870540656fe9dcb01"
assert is_valid_signature_encoding(s)
s = "3044022047ac8e878352d3ebbde1c94ce3a10d057c24175747116f8288e5d794" \
"d12d482f0220217f36a485cae903c713331d877c1f64677e3622ad4010726870540656fe9dcb01010101"
assert is_valid_signature_encoding(s) == False
s = "8044022047ac8e878352d3ebbde1c94ce3a10d057c24175747116f8288e5d794" \
"d12d482f0220217f36a485cae903c713331d877c1f64677e3622ad4010726870540656fe9dcb01"
assert is_valid_signature_encoding(s) == False
s = "3080022047ac8e878352d3ebbde1c94ce3a10d057c24175747116f8288e5d794" \
"d12d482f0220217f36a485cae903c713331d877c1f64677e3622ad4010726870540656fe9dcb01"
assert is_valid_signature_encoding(s) == False
s = "3044020947ac8e878352d3ebbde1c94ce3a10d057c24175747116f8288e5d794" \
"d12d482f0220217f36a485cae903c713331d877c1f64677e3622ad4010726870540656fe9dcb01"
assert is_valid_signature_encoding(s) == False
s = "3044029047ac8e878352d3ebbde1c94ce3a10d057c24175747116f8288e5d794" \
"d12d482f0220217f36a485cae903c713331d877c1f64677e3622ad4010726870540656fe9dcb01"
assert is_valid_signature_encoding(s) == False
s = "3044992047ac8e878352d3ebbde1c94ce3a10d057c24175747116f8288e5d794" \
"d12d482f0220217f36a485cae903c713331d877c1f64677e3622ad4010726870540656fe9dcb01"
assert is_valid_signature_encoding(s) == False
s = "3044020047ac8e878352d3ebbde1c94ce3a10d057c24175747116f8288e5d794" \
"d12d482f0220217f36a485cae903c713331d877c1f64677e3622ad4010726870540656fe9dcb01"
assert is_valid_signature_encoding(s) == False
s = "3044022080ac8e878352d3ebbde1c94ce3a10d057c24175747116f8288e5d794" \
"d12d482f0220217f36a485cae903c713331d877c1f64677e3622ad4010726870540656fe9dcb01"
assert is_valid_signature_encoding(s) == False
s = "3044022000098e878352d3ebbde1c94ce3a10d057c24175747116f8288e5d794" \
"d12d482f0220217f36a485cae903c713331d877c1f64677e3622ad4010726870540656fe9dcb01"
assert is_valid_signature_encoding(s) == False
s = "3044022047ac8e878352d3ebbde1c94ce3a10d057c24175747116f8288e5d794" \
"d12d482f0320217f36a485cae903c713331d877c1f64677e3622ad4010726870540656fe9dcb01"
assert is_valid_signature_encoding(s) == False
s = "3044022047ac8e878352d3ebbde1c94ce3a10d057c24175747116f8288e5d794" \
"d12d482f0200217f36a485cae903c713331d877c1f64677e3622ad4010726870540656fe9dcb01"
assert is_valid_signature_encoding(s) == False
s = "3044022047ac8e878352d3ebbde1c94ce3a10d057c24175747116f8288e5d794" \
"d12d482f0220807f36a485cae903c713331d877c1f64677e3622ad4010726870540656fe9dcb01"
assert is_valid_signature_encoding(s) == False
s = "3044022047ac8e878352d3ebbde1c94ce3a10d057c24175747116f8288e5d794" \
"d12d482f0220007f36a485cae903c713331d877c1f64677e3622ad4010726870540656fe9dcb01"
assert is_valid_signature_encoding(s) == False