| # This file is dual licensed under the terms of the Apache License, Version | |
| # 2.0, and the BSD License. See the LICENSE file in the root of this repository | |
| # for complete details. | |
| from __future__ import annotations | |
| from cryptography.hazmat.bindings._rust import asn1 | |
| from cryptography.hazmat.primitives import hashes | |
| decode_dss_signature = asn1.decode_dss_signature | |
| encode_dss_signature = asn1.encode_dss_signature | |
| class Prehashed: | |
| def __init__(self, algorithm: hashes.HashAlgorithm): | |
| if not isinstance(algorithm, hashes.HashAlgorithm): | |
| raise TypeError("Expected instance of HashAlgorithm.") | |
| self._algorithm = algorithm | |
| self._digest_size = algorithm.digest_size | |
| def digest_size(self) -> int: | |
| return self._digest_size | |