Function test_rsa_pkcs1_encryption

tests/wycheproof/test_rsa.py:277–307

(backend, wycheproof)

    "rsa_pkcs1_4096_test.json",
)
def test_rsa_pkcs1_encryption(backend, wycheproof):
    key = wycheproof.cache_value_to_group(
        "cached_key",
        lambda: serialization.load_der_private_key(
            binascii.unhexlify(wycheproof.testgroup["privateKeyPkcs8"]),
            password=None,
            unsafe_skip_rsa_key_validation=True,
        ),
    )
    assert isinstance(key, rsa.RSAPrivateKey)

    if wycheproof.valid:
        pt = key.decrypt(
            binascii.unhexlify(wycheproof.testcase["ct"]), padding.PKCS1v15()
        )
        assert pt == binascii.unhexlify(wycheproof.testcase["msg"])
    elif backend._lib.Cryptography_HAS_IMPLICIT_RSA_REJECTION:
        try:
            assert key.decrypt(
                binascii.unhexlify(wycheproof.testcase["ct"]),
                padding.PKCS1v15(),
            ) != binascii.unhexlify(wycheproof.testcase["ct"])
        except ValueError:
            # Some raise ValueError due to length mismatch.
            pass
    else:
        with pytest.raises(ValueError):
            key.decrypt(
                binascii.unhexlify(wycheproof.testcase["ct"]),
                padding.PKCS1v15(),
            )