def test_verify_multi_sig_works_for_invalid_signature(generator, message):
sign_key1 = SignKey.new(None)
ver_key1 = VerKey.new(generator, sign_key1)
sign_key2 = SignKey.new(None)
ver_key2 = VerKey.new(generator, SignKey.new(None))
signature1 = Bls.sign(message, sign_key1)
signature2 = Bls.sign(message, sign_key2)
multi_signature_invalid = MultiSignature.new([signature1, signature2])
valid = Bls.verify_multi_sig(multi_signature_invalid, message,
[ver_key1, ver_key2], generator)
assert not valid
def verify_sig(self, signature: str, message: bytes,
bls_pk: Optional[VerKey]) -> bool:
bls_signature = IndyCryptoBlsUtils.bls_from_str(signature, Signature)
if bls_signature is None:
return False
if bls_pk is None:
return False
return Bls.verify(bls_signature, message, bls_pk, self._generator)
def verify_multi_sig(self, signature: str, message: bytes,
pks: Sequence[Optional[VerKey]]) -> bool:
# TODO: is it expected that we return False if one of the keys is None?
if None in pks:
return False
multi_signature = \
IndyCryptoBlsUtils.bls_from_str(signature, MultiSignature) # type: MultiSignature
if multi_signature is None:
return False
return Bls.verify_multi_sig(multi_sig=multi_signature,
message=message,
ver_keys=pks,
gen=self._generator)
def signature2(message, sign_key2):
signature = Bls.sign(message, sign_key2)
assert type(signature) is Signature
assert signature.c_instance is not None
return signature
def sign(self, message: bytes) -> str:
sign = Bls.sign(message, self._sk)
return IndyCryptoBlsUtils.bls_to_str(sign)
def verify_key_proof_of_possession(self,
key_proof: Optional[ProofOfPossession],
bls_pk: Optional[VerKey]) -> bool:
if None in [key_proof, bls_pk]:
return False
return Bls.verify_pop(key_proof, bls_pk, self._generator)
def test_verify__multi_sig_works(generator, message, multi_sig, ver_key1,
ver_key2):
valid = Bls.verify_multi_sig(multi_sig, message, [ver_key1, ver_key2],
generator)
assert valid
def test_verify_for_seed(generator, message, ver_key2, signature2):
valid = Bls.verify(signature2, message, ver_key2, generator)
assert valid
def test_verify_pop(generator, ver_key1, pop):
valid = Bls.verify_pop(pop, ver_key1, generator)
assert valid
def test_verify(generator, message, ver_key1, signature1):
valid = Bls.verify(signature1, message, ver_key1, generator)
assert valid