def new_ecdsa_key_template(hash_type, curve_type, encoding):
key_format = ecdsa_pb2.EcdsaKeyFormat()
key_format.params.hash_type = hash_type
key_format.params.curve = curve_type
key_format.params.encoding = encoding
key_template = tink_pb2.KeyTemplate()
key_template.type_url = (
'type.googleapis.com/google.crypto.tink.EcdsaPrivateKey')
key_template.value = key_format.SerializeToString()
return key_template
def create_ecdsa_key_template(
hash_type: common_pb2.HashType, curve: common_pb2.EllipticCurveType,
encoding: ecdsa_pb2.EcdsaSignatureEncoding) -> tink_pb2.KeyTemplate:
"""Creates a KeyTemplate containing an EcdsaKeyFormat."""
params = ecdsa_pb2.EcdsaParams(hash_type=hash_type,
curve=curve,
encoding=encoding)
key_format = ecdsa_pb2.EcdsaKeyFormat(params=params)
key_template = tink_pb2.KeyTemplate(value=key_format.SerializeToString(),
type_url=_ECDSA_KEY_TYPE_URL,
output_prefix_type=tink_pb2.TINK)
return key_template
def new_ecdsa_key_template(hash_type, curve_type, encoding, public=True):
params = ecdsa_pb2.EcdsaParams(hash_type=hash_type,
curve=curve_type,
encoding=encoding)
key_format = ecdsa_pb2.EcdsaKeyFormat(params=params)
key_template = tink_pb2.KeyTemplate()
if public:
append = 'EcdsaPublicKey'
else:
append = 'EcdsaPrivateKey'
key_template.type_url = 'type.googleapis.com/google.crypto.tink.' + append
key_template.value = key_format.SerializeToString()
return key_template
def test_ecdsa_ieee(self, key_template, hash_type, curve):
self.assertEqual(
key_template.type_url,
'type.googleapis.com/google.crypto.tink.EcdsaPrivateKey')
self.assertEqual(key_template.output_prefix_type, tink_pb2.TINK)
key_format = ecdsa_pb2.EcdsaKeyFormat()
key_format.ParseFromString(key_template.value)
self.assertEqual(key_format.params.hash_type, hash_type)
self.assertEqual(key_format.params.curve, curve)
self.assertEqual(key_format.params.encoding, ecdsa_pb2.IEEE_P1363)
# Check that the template works with the key manager
key_manager = public_key_sign_key_manager.from_cc_registry(
key_template.type_url)
key_manager.new_key_data(key_template)