Method test_dsa_signing

tests/hazmat/primitives/test_dsa.py:536–564

(self, backend, subtests)

)
class TestDSASignature:
    def test_dsa_signing(self, backend, subtests):
        vectors = load_vectors_from_file(
            os.path.join("asymmetric", "DSA", "FIPS_186-3", "SigGen.txt"),
            load_fips_dsa_sig_vectors,
        )
        for vector in vectors:
            with subtests.test():
                digest_algorithm = vector["digest_algorithm"].replace("-", "")
                algorithm = _ALGORITHMS_DICT[digest_algorithm]

                _skip_if_dsa_not_supported(
                    backend, algorithm, vector["p"], vector["q"], vector["g"]
                )

                private_key = dsa.DSAPrivateNumbers(
                    public_numbers=dsa.DSAPublicNumbers(
                        parameter_numbers=dsa.DSAParameterNumbers(
                            vector["p"], vector["q"], vector["g"]
                        ),
                        y=vector["y"],
                    ),
                    x=vector["x"],
                ).private_key(backend)
                signature = private_key.sign(vector["msg"], algorithm)
                assert signature

                private_key.public_key().verify(
                    signature, vector["msg"], algorithm
                )

    def test_sign(self, backend):
        private_key = DSA_KEY_1024.private_key(backend)