def throw_wrong_type():
private_key = ExtendedPrivateKey.from_seed(b"foo").get_private_key()
message_hash = bytes([10] * 32)
sig_prepend = private_key.sign_prepend_prehashed(message_hash).serialize()
sig_secure = private_key.sign_prehashed(message_hash).serialize()
try:
Signature.from_bytes(sig_prepend)
except ValueError:
try:
PrependSignature.from_bytes(sig_secure)
except ValueError:
return
assert False
assert False
def _signature_from_bytes(signature: BLSSignature) -> Signature:
if signature == EMPTY_SIGNATURE:
raise ValueError(f"Invalid signature (EMPTY_SIGNATURE): {signature}")
elif len(signature) != 96:
raise ValueError(
f"Invalid signaute length, expect 96 got {len(signature)}. Signature: {signature}"
)
try:
return Signature.from_bytes(signature)
except (RuntimeError, ValueError) as error:
raise ValidationError(f"Bad signature: {signature}, {error}")
def verify_sig(msg, _pub_key, _sig):
try:
sig = Signature.from_bytes(_sig)
except RuntimeError:
raise ValueError("Bad signature")
try:
pub_key = PublicKey.from_bytes(_pub_key)
except RuntimeError:
raise ValueError("Bad public key")
sig.set_aggregation_info(AggregationInfo.from_msg(pub_key, msg))
ok = sig.verify()
return ok
def verify_signature(self):
temp_array = []
msg = self.sender + self.to + str(self.amount) + str(self.timestamp)
for c in msg:
temp_array.append(ord(c))
msg = bytes(temp_array)
_signature = bytes(self.signature, "ISO-8859-1")
_signature = Signature.from_bytes(_signature)
public_key = PublicKey.from_bytes(bytes(self.sender, "ISO-8859-1"))
_signature.set_aggregation_info(
AggregationInfo.from_msg(public_key, msg))
return _signature.verify()
def deserialize(_obj, _type):
try:
if (type(_obj) != PrivateKey) or (type(_obj) != PublicKey) or (type(_obj) != Signature):
_obj = bytes(_obj, "ISO-8859-1")
if _type == PrivateKey:
return PrivateKey.from_bytes(_obj)
elif _type == PublicKey:
return PublicKey.from_bytes(_obj)
elif _type == Signature:
return Signature.from_bytes(_obj)
else:
_obj
except Exception as e:
print("given parameters compatibility error")
print(e)
return None
def test2():
seed = bytes([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
seed2 = bytes([1, 20, 102, 229, 1, 157])
sk = PrivateKey.from_seed(seed)
sk_cp = PrivateKey.from_seed(seed)
sk2 = PrivateKey.from_seed(seed2)
pk = sk.get_public_key()
pk2 = sk2.get_public_key()
assert (sk == sk_cp)
assert (sk != sk2)
assert (pk.get_fingerprint() == 0xddad59bb)
sk2_ser = sk2.serialize()
pk2_ser = pk2.serialize()
pk2_copy = PublicKey.from_bytes(pk2_ser)
assert (pk2 == pk2_copy)
assert (pk != pk2)
assert (len(pk2_ser) == 48)
assert (len(sk2_ser) == 32)
message = bytes("this is the message", "utf-8")
sig = sk.sign(message)
sig_ser = sig.serialize()
sig_cp = Signature.from_bytes(sig_ser)
a1 = AggregationInfo.from_msg(pk, message)
sig_cp.set_aggregation_info(a1)
a2 = sig_cp.get_aggregation_info()
assert (a1 == a2)
sig2 = sk2.sign(message)
assert (len(sig_ser) == 96)
assert (sig != sig2)
assert (sig == sig_cp)
sig_agg = Signature.aggregate([sig, sig2])
result = sig_cp.verify()
result2 = sig2.verify()
result3 = sig_agg.verify()
assert (result)
assert (result2)
assert (result3)
sk2 = sk
def test1():
seed = bytes([
0, 50, 6, 244, 24, 199, 1, 25, 52, 88, 192, 19, 18, 12, 89, 6, 220, 18,
102, 58, 209, 82, 12, 62, 89, 110, 182, 9, 44, 20, 254, 22
])
sk = PrivateKey.from_seed(seed)
pk = sk.get_public_key()
msg = bytes([100, 2, 254, 88, 90, 45, 23])
sig = sk.sign(msg)
sk_bytes = sk.serialize()
pk_bytes = pk.serialize()
sig_bytes = sig.serialize()
sk = PrivateKey.from_bytes(sk_bytes)
pk = PublicKey.from_bytes(pk_bytes)
sig = Signature.from_bytes(sig_bytes)
sig.set_aggregation_info(AggregationInfo.from_msg(pk, msg))
ok = sig.verify()
assert (ok)
seed = bytes([1]) + seed[1:]
sk1 = PrivateKey.from_seed(seed)
seed = bytes([2]) + seed[1:]
sk2 = PrivateKey.from_seed(seed)
pk1 = sk1.get_public_key()
sig1 = sk1.sign(msg)
pk2 = sk2.get_public_key()
sig2 = sk2.sign(msg)
agg_sig = Signature.aggregate([sig1, sig2])
agg_pubkey = PublicKey.aggregate([pk1, pk2])
agg_sig.set_aggregation_info(AggregationInfo.from_msg(agg_pubkey, msg))
assert (agg_sig.verify())
seed = bytes([3]) + seed[1:]
sk3 = PrivateKey.from_seed(seed)
pk3 = sk3.get_public_key()
msg2 = bytes([100, 2, 254, 88, 90, 45, 23])
sig1 = sk1.sign(msg)
sig2 = sk2.sign(msg)
sig3 = sk3.sign(msg2)
agg_sig_l = Signature.aggregate([sig1, sig2])
agg_sig_final = Signature.aggregate([agg_sig_l, sig3])
sig_bytes = agg_sig_final.serialize()
agg_sig_final = Signature.from_bytes(sig_bytes)
a1 = AggregationInfo.from_msg(pk1, msg)
a2 = AggregationInfo.from_msg(pk2, msg)
a3 = AggregationInfo.from_msg(pk3, msg2)
a1a2 = AggregationInfo.merge_infos([a1, a2])
a_final = AggregationInfo.merge_infos([a1a2, a3])
print(a_final)
agg_sig_final.set_aggregation_info(a_final)
ok = agg_sig_final.verify()
ok = agg_sig_l.verify()
agg_sig_final = agg_sig_final.divide_by([agg_sig_l])
ok = agg_sig_final.verify()
agg_sk = PrivateKey.aggregate([sk1, sk2], [pk1, pk2])
agg_sk.sign(msg)
seed = bytes([
1, 50, 6, 244, 24, 199, 1, 25, 52, 88, 192, 19, 18, 12, 89, 6, 220, 18,
102, 58, 209, 82, 12, 62, 89, 110, 182, 9, 44, 20, 254, 22
])
esk = ExtendedPrivateKey.from_seed(seed)
epk = esk.get_extended_public_key()
sk_child = esk.private_child(0).private_child(5)
pk_child = epk.public_child(0).public_child(5)
buffer1 = pk_child.serialize()
buffer2 = sk_child.serialize()
print(len(buffer1), buffer1)
print(len(buffer2), buffer2)
assert (sk_child.get_extended_public_key() == pk_child)
def sigs_deseriazlize(_sigs):
try:
sigs = list(map(lambda x: Signature.from_bytes(x), _sigs))
except RuntimeError:
raise ValueError("Bad signature")
return sigs
def _signature_from_bytes(signature: BLSSignature) -> Signature:
try:
return Signature.from_bytes(signature)
except (RuntimeError, ValueError) as error:
raise ValidationError(f"Bad signature: {signature}, {error}")