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Diffstat (limited to '.venv/lib/python3.12/site-packages/cryptography/hazmat/primitives/asymmetric/dsa.py')
-rw-r--r-- | .venv/lib/python3.12/site-packages/cryptography/hazmat/primitives/asymmetric/dsa.py | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/cryptography/hazmat/primitives/asymmetric/dsa.py b/.venv/lib/python3.12/site-packages/cryptography/hazmat/primitives/asymmetric/dsa.py new file mode 100644 index 00000000..6dd34c0e --- /dev/null +++ b/.venv/lib/python3.12/site-packages/cryptography/hazmat/primitives/asymmetric/dsa.py @@ -0,0 +1,154 @@ +# 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 + +import abc +import typing + +from cryptography.hazmat.bindings._rust import openssl as rust_openssl +from cryptography.hazmat.primitives import _serialization, hashes +from cryptography.hazmat.primitives.asymmetric import utils as asym_utils + + +class DSAParameters(metaclass=abc.ABCMeta): + @abc.abstractmethod + def generate_private_key(self) -> DSAPrivateKey: + """ + Generates and returns a DSAPrivateKey. + """ + + @abc.abstractmethod + def parameter_numbers(self) -> DSAParameterNumbers: + """ + Returns a DSAParameterNumbers. + """ + + +DSAParametersWithNumbers = DSAParameters +DSAParameters.register(rust_openssl.dsa.DSAParameters) + + +class DSAPrivateKey(metaclass=abc.ABCMeta): + @property + @abc.abstractmethod + def key_size(self) -> int: + """ + The bit length of the prime modulus. + """ + + @abc.abstractmethod + def public_key(self) -> DSAPublicKey: + """ + The DSAPublicKey associated with this private key. + """ + + @abc.abstractmethod + def parameters(self) -> DSAParameters: + """ + The DSAParameters object associated with this private key. + """ + + @abc.abstractmethod + def sign( + self, + data: bytes, + algorithm: asym_utils.Prehashed | hashes.HashAlgorithm, + ) -> bytes: + """ + Signs the data + """ + + @abc.abstractmethod + def private_numbers(self) -> DSAPrivateNumbers: + """ + Returns a DSAPrivateNumbers. + """ + + @abc.abstractmethod + def private_bytes( + self, + encoding: _serialization.Encoding, + format: _serialization.PrivateFormat, + encryption_algorithm: _serialization.KeySerializationEncryption, + ) -> bytes: + """ + Returns the key serialized as bytes. + """ + + +DSAPrivateKeyWithSerialization = DSAPrivateKey +DSAPrivateKey.register(rust_openssl.dsa.DSAPrivateKey) + + +class DSAPublicKey(metaclass=abc.ABCMeta): + @property + @abc.abstractmethod + def key_size(self) -> int: + """ + The bit length of the prime modulus. + """ + + @abc.abstractmethod + def parameters(self) -> DSAParameters: + """ + The DSAParameters object associated with this public key. + """ + + @abc.abstractmethod + def public_numbers(self) -> DSAPublicNumbers: + """ + Returns a DSAPublicNumbers. + """ + + @abc.abstractmethod + def public_bytes( + self, + encoding: _serialization.Encoding, + format: _serialization.PublicFormat, + ) -> bytes: + """ + Returns the key serialized as bytes. + """ + + @abc.abstractmethod + def verify( + self, + signature: bytes, + data: bytes, + algorithm: asym_utils.Prehashed | hashes.HashAlgorithm, + ) -> None: + """ + Verifies the signature of the data. + """ + + @abc.abstractmethod + def __eq__(self, other: object) -> bool: + """ + Checks equality. + """ + + +DSAPublicKeyWithSerialization = DSAPublicKey +DSAPublicKey.register(rust_openssl.dsa.DSAPublicKey) + +DSAPrivateNumbers = rust_openssl.dsa.DSAPrivateNumbers +DSAPublicNumbers = rust_openssl.dsa.DSAPublicNumbers +DSAParameterNumbers = rust_openssl.dsa.DSAParameterNumbers + + +def generate_parameters( + key_size: int, backend: typing.Any = None +) -> DSAParameters: + if key_size not in (1024, 2048, 3072, 4096): + raise ValueError("Key size must be 1024, 2048, 3072, or 4096 bits.") + + return rust_openssl.dsa.generate_parameters(key_size) + + +def generate_private_key( + key_size: int, backend: typing.Any = None +) -> DSAPrivateKey: + parameters = generate_parameters(key_size) + return parameters.generate_private_key() |