| # Copyright 2019 Google LLC |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| """Python wrapper of the wrapped C++ Public Key Signature key manager.""" |
| |
| from __future__ import absolute_import |
| from __future__ import division |
| # Placeholder for import for type annotations |
| from __future__ import print_function |
| |
| from tink import core |
| from tink.cc.pybind import tink_bindings |
| from tink.signature import _public_key_sign |
| from tink.signature import _public_key_verify |
| from tink.signature import _signature_wrapper |
| |
| |
| class _PublicKeySignCcToPyWrapper(_public_key_sign.PublicKeySign): |
| """Transforms C++ PublicKeySign into a Python primitive.""" |
| |
| def __init__(self, cc_primitive: tink_bindings.PublicKeySign): |
| self._public_key_sign = cc_primitive |
| |
| @core.use_tink_errors |
| def sign(self, data: bytes) -> bytes: |
| return self._public_key_sign.sign(data) |
| |
| |
| class _PublicKeyVerifyCcToPyWrapper(_public_key_verify.PublicKeyVerify): |
| """Transforms C++ PublicKeyVerify into a Python primitive.""" |
| |
| def __init__(self, cc_primitive: tink_bindings.PublicKeyVerify): |
| self._public_key_verify = cc_primitive |
| |
| @core.use_tink_errors |
| def verify(self, signature: bytes, data: bytes) -> None: |
| self._public_key_verify.verify(signature, data) |
| |
| |
| def register(): |
| """Registers all signature key managers in the Python registry.""" |
| tink_bindings.register() |
| |
| for key_type_identifier in ('EcdsaPrivateKey', 'Ed25519PrivateKey', |
| 'RsaSsaPssPrivateKey', 'RsaSsaPkcs1PrivateKey',): |
| type_url = 'type.googleapis.com/google.crypto.tink.' + key_type_identifier |
| key_manager = core.PrivateKeyManagerCcToPyWrapper( |
| tink_bindings.PublicKeySignKeyManager.from_cc_registry(type_url), |
| _public_key_sign.PublicKeySign, _PublicKeySignCcToPyWrapper) |
| core.Registry.register_key_manager(key_manager, new_key_allowed=True) |
| |
| for key_type_identifier in ('EcdsaPublicKey', 'Ed25519PublicKey', |
| 'RsaSsaPssPublicKey', 'RsaSsaPkcs1PublicKey',): |
| type_url = 'type.googleapis.com/google.crypto.tink.' + key_type_identifier |
| key_manager = core.KeyManagerCcToPyWrapper( |
| tink_bindings.PublicKeyVerifyKeyManager.from_cc_registry(type_url), |
| _public_key_verify.PublicKeyVerify, _PublicKeyVerifyCcToPyWrapper) |
| core.Registry.register_key_manager(key_manager, new_key_allowed=True) |
| |
| core.Registry.register_primitive_wrapper( |
| _signature_wrapper.PublicKeySignWrapper()) |
| core.Registry.register_primitive_wrapper( |
| _signature_wrapper.PublicKeyVerifyWrapper()) |