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: /snap/core18/current/usr/lib/python3/dist-packages/cryptography/hazmat/backends/openssl/ [ drwxr-xr-x ]
name : utils.py # 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 absolute_import, division, print_function import warnings from cryptography import utils from cryptography.hazmat.primitives import hashes from cryptography.hazmat.primitives.asymmetric.utils import Prehashed def _calculate_digest_and_algorithm(backend, data, algorithm): if not isinstance(algorithm, Prehashed): hash_ctx = hashes.Hash(algorithm, backend) hash_ctx.update(data) data = hash_ctx.finalize() else: algorithm = algorithm._algorithm if len(data) != algorithm.digest_size: raise ValueError( "The provided data must be the same length as the hash " "algorithm's digest size." ) return (data, algorithm) def _check_not_prehashed(signature_algorithm): if isinstance(signature_algorithm, Prehashed): raise TypeError( "Prehashed is only supported in the sign and verify methods. " "It cannot be used with signer or verifier." ) def _warn_sign_verify_deprecated(): warnings.warn( "signer and verifier have been deprecated. Please use sign " "and verify instead.", utils.PersistentlyDeprecated, stacklevel=3 )