Python cryptography.hazmat.primitives.asymmetric.ec.SECP192R1 Examples

The following are 4 code examples of cryptography.hazmat.primitives.asymmetric.ec.SECP192R1(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module cryptography.hazmat.primitives.asymmetric.ec , or try the search function .
Example #1
Source File: test_crypto_elliptic_curve.py    From aws-encryption-sdk-python with Apache License 2.0 5 votes vote down vote up 
def test_ecc_decode_compressed_point_prime_unsupported():
    with pytest.raises(NotSupportedError) as excinfo:
        _ecc_decode_compressed_point(curve=ec.SECP192R1(), compressed_point="\x02skdgaiuhgijudflkjsdgfkjsdflgjhsd")

    excinfo.match(r"Curve secp192r1 is not supported at this time")
Example #2
Source File: tests_utils.py    From django-ca with GNU General Public License v3.0 5 votes vote down vote up 
def test_basic(self):
        self.assertIsInstance(parse_key_curve(), type(ca_settings.CA_DEFAULT_ECC_CURVE))
        self.assertIsInstance(parse_key_curve('SECT409R1'), ec.SECT409R1)
        self.assertIsInstance(parse_key_curve('SECP521R1'), ec.SECP521R1)
        self.assertIsInstance(parse_key_curve('SECP192R1'), ec.SECP192R1)
Example #3
Source File: utils.py    From lemur with Apache License 2.0 4 votes vote down vote up 
def generate_private_key(key_type):
    """
    Generates a new private key based on key_type.

    Valid key types: RSA2048, RSA4096', 'ECCPRIME192V1', 'ECCPRIME256V1', 'ECCSECP192R1',
        'ECCSECP224R1', 'ECCSECP256R1', 'ECCSECP384R1', 'ECCSECP521R1', 'ECCSECP256K1',
        'ECCSECT163K1', 'ECCSECT233K1', 'ECCSECT283K1', 'ECCSECT409K1', 'ECCSECT571K1',
        'ECCSECT163R2', 'ECCSECT233R1', 'ECCSECT283R1', 'ECCSECT409R1', 'ECCSECT571R2'

    :param key_type:
    :return:
    """

    _CURVE_TYPES = {
        "ECCPRIME192V1": ec.SECP192R1(),
        "ECCPRIME256V1": ec.SECP256R1(),
        "ECCSECP192R1": ec.SECP192R1(),
        "ECCSECP224R1": ec.SECP224R1(),
        "ECCSECP256R1": ec.SECP256R1(),
        "ECCSECP384R1": ec.SECP384R1(),
        "ECCSECP521R1": ec.SECP521R1(),
        "ECCSECP256K1": ec.SECP256K1(),
        "ECCSECT163K1": ec.SECT163K1(),
        "ECCSECT233K1": ec.SECT233K1(),
        "ECCSECT283K1": ec.SECT283K1(),
        "ECCSECT409K1": ec.SECT409K1(),
        "ECCSECT571K1": ec.SECT571K1(),
        "ECCSECT163R2": ec.SECT163R2(),
        "ECCSECT233R1": ec.SECT233R1(),
        "ECCSECT283R1": ec.SECT283R1(),
        "ECCSECT409R1": ec.SECT409R1(),
        "ECCSECT571R2": ec.SECT571R1(),
    }

    if key_type not in CERTIFICATE_KEY_TYPES:
        raise Exception(
            "Invalid key type: {key_type}. Supported key types: {choices}".format(
                key_type=key_type, choices=",".join(CERTIFICATE_KEY_TYPES)
            )
        )

    if "RSA" in key_type:
        key_size = int(key_type[3:])
        return rsa.generate_private_key(
            public_exponent=65537, key_size=key_size, backend=default_backend()
        )
    elif "ECC" in key_type:
        return ec.generate_private_key(
            curve=_CURVE_TYPES[key_type], backend=default_backend()
        )
Example #4
Source File: test_lib_crypto_ecc.py    From synapse with Apache License 2.0 4 votes vote down vote up 
def test_lib_crypto_ecc_exchange(self):
        spvk1 = s_ecc.PriKey.generate()
        spbk1 = spvk1.public()

        spvk2 = s_ecc.PriKey.generate()
        spbk2 = spvk2.public()

        k1 = (spvk1.exchange(spbk2))
        k2 = (spvk2.exchange(spbk1))
        self.eq(k1, k2)

        # Curves must be the same
        _pkd = c_ec.generate_private_key(
            c_ec.SECP192R1(),  # We don't use this curve
            default_backend()
        )
        prkdiff = s_ecc.PriKey(_pkd)
        pbkdiff = prkdiff.public()
        self.raises(s_exc.BadEccExchange, spvk1.exchange, pbkdiff)
        self.raises(s_exc.BadEccExchange, prkdiff.exchange, spbk1)

        # Do a demonstrative ephemeral exchange
        epvk1 = s_ecc.PriKey.generate()
        epbk1 = epvk1.public()

        epvk2 = s_ecc.PriKey.generate()
        epbk2 = epvk2.public()

        # assume epbk2 is sent to the owner of pvk1
        z1e = epvk1.exchange(epbk2)
        z1s = spvk1.exchange(spbk2)
        z1 = z1e + z1s

        # assume epbk1 is sent to the owner of pvk2
        z2e = epvk2.exchange(epbk1)
        z2s = spvk2.exchange(spbk1)
        z2 = z2e + z2s

        self.eq(z1, z2)

        # run through kdf
        kdf1 = c_hkdf.HKDF(c_hashes.SHA256(),
                           length=64,
                           salt=None,
                           info=b'test',
                           backend=default_backend())
        k1 = kdf1.derive(z1)
        k1tx, k1rx = k1[32:], k1[:32]

        kdf2 = c_hkdf.HKDF(c_hashes.SHA256(),
                           length=64,
                           salt=None,
                           info=b'test',
                           backend=default_backend())
        k2 = kdf2.derive(z2)
        k2rx, k2tx = k2[32:], k2[:32]

        self.eq(k1tx, k2rx)
        self.eq(k1rx, k2tx)
        self.ne(k1tx, k2tx)