1 files changed, 195 insertions, 0 deletions
diff --git a/src/cryptography/hazmat/primitives/asymmetric/ec.py b/src/cryptography/hazmat/primitives/asymmetric/ec.py
new file mode 100644
index 00000000..ced732fb
--- /dev/null
+++ b/src/cryptography/hazmat/primitives/asymmetric/ec.py
@@ -0,0 +1,195 @@
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from __future__ import absolute_import, division, print_function
+
+import six
+
+from cryptography import utils
+from cryptography.hazmat.primitives import interfaces
+
+
+@utils.register_interface(interfaces.EllipticCurve)
+class SECT571R1(object):
+    name = "sect571r1"
+    key_size = 571
+
+
+@utils.register_interface(interfaces.EllipticCurve)
+class SECT409R1(object):
+    name = "sect409r1"
+    key_size = 409
+
+
+@utils.register_interface(interfaces.EllipticCurve)
+class SECT283R1(object):
+    name = "sect283r1"
+    key_size = 283
+
+
+@utils.register_interface(interfaces.EllipticCurve)
+class SECT233R1(object):
+    name = "sect233r1"
+    key_size = 233
+
+
+@utils.register_interface(interfaces.EllipticCurve)
+class SECT163R2(object):
+    name = "sect163r2"
+    key_size = 163
+
+
+@utils.register_interface(interfaces.EllipticCurve)
+class SECT571K1(object):
+    name = "sect571k1"
+    key_size = 571
+
+
+@utils.register_interface(interfaces.EllipticCurve)
+class SECT409K1(object):
+    name = "sect409k1"
+    key_size = 409
+
+
+@utils.register_interface(interfaces.EllipticCurve)
+class SECT283K1(object):
+    name = "sect283k1"
+    key_size = 283
+
+
+@utils.register_interface(interfaces.EllipticCurve)
+class SECT233K1(object):
+    name = "sect233k1"
+    key_size = 233
+
+
+@utils.register_interface(interfaces.EllipticCurve)
+class SECT163K1(object):
+    name = "sect163k1"
+    key_size = 163
+
+
+@utils.register_interface(interfaces.EllipticCurve)
+class SECP521R1(object):
+    name = "secp521r1"
+    key_size = 521
+
+
+@utils.register_interface(interfaces.EllipticCurve)
+class SECP384R1(object):
+    name = "secp384r1"
+    key_size = 384
+
+
+@utils.register_interface(interfaces.EllipticCurve)
+class SECP256R1(object):
+    name = "secp256r1"
+    key_size = 256
+
+
+@utils.register_interface(interfaces.EllipticCurve)
+class SECP224R1(object):
+    name = "secp224r1"
+    key_size = 224
+
+
+@utils.register_interface(interfaces.EllipticCurve)
+class SECP192R1(object):
+    name = "secp192r1"
+    key_size = 192
+
+
+_CURVE_TYPES = {
+    "prime192v1": SECP192R1,
+    "prime256v1": SECP256R1,
+
+    "secp192r1": SECP192R1,
+    "secp224r1": SECP224R1,
+    "secp256r1": SECP256R1,
+    "secp384r1": SECP384R1,
+    "secp521r1": SECP521R1,
+
+    "sect163k1": SECT163K1,
+    "sect233k1": SECT233K1,
+    "sect283k1": SECT283K1,
+    "sect409k1": SECT409K1,
+    "sect571k1": SECT571K1,
+
+    "sect163r2": SECT163R2,
+    "sect233r1": SECT233R1,
+    "sect283r1": SECT283R1,
+    "sect409r1": SECT409R1,
+    "sect571r1": SECT571R1,
+}
+
+
+@utils.register_interface(interfaces.EllipticCurveSignatureAlgorithm)
+class ECDSA(object):
+    def __init__(self, algorithm):
+        self._algorithm = algorithm
+
+    algorithm = utils.read_only_property("_algorithm")
+
+
+def generate_private_key(curve, backend):
+    return backend.generate_elliptic_curve_private_key(curve)
+
+
+class EllipticCurvePublicNumbers(object):
+    def __init__(self, x, y, curve):
+        if (
+            not isinstance(x, six.integer_types) or
+            not isinstance(y, six.integer_types)
+        ):
+            raise TypeError("x and y must be integers.")
+
+        if not isinstance(curve, interfaces.EllipticCurve):
+            raise TypeError("curve must provide the EllipticCurve interface.")
+
+        self._y = y
+        self._x = x
+        self._curve = curve
+
+    def public_key(self, backend):
+        try:
+            return backend.load_elliptic_curve_public_numbers(self)
+        except AttributeError:
+            return backend.elliptic_curve_public_key_from_numbers(self)
+
+    curve = utils.read_only_property("_curve")
+    x = utils.read_only_property("_x")
+    y = utils.read_only_property("_y")
+
+
+class EllipticCurvePrivateNumbers(object):
+    def __init__(self, private_value, public_numbers):
+        if not isinstance(private_value, six.integer_types):
+            raise TypeError("private_value must be an integer.")
+
+        if not isinstance(public_numbers, EllipticCurvePublicNumbers):
+            raise TypeError(
+                "public_numbers must be an EllipticCurvePublicNumbers "
+                "instance."
+            )
+
+        self._private_value = private_value
+        self._public_numbers = public_numbers
+
+    def private_key(self, backend):
+        try:
+            return backend.load_elliptic_curve_private_numbers(self)
+        except AttributeError:
+            return backend.elliptic_curve_private_key_from_numbers(self)
+
+    private_value = utils.read_only_property("_private_value")
+    public_numbers = utils.read_only_property("_public_numbers")