1 files changed, 26 insertions, 0 deletions
diff --git a/pyecsca/ec/group.py b/pyecsca/ec/group.py
new file mode 100644
index 0000000..4c471cc
--- /dev/null
+++ b/pyecsca/ec/group.py
@@ -0,0 +1,26 @@
+from typing import Optional
+
+from public import public
+
+from .curve import EllipticCurve
+from .point import Point
+
+
+@public
+class AbelianGroup(object):
+    curve: EllipticCurve
+    generator: Point
+    neutral: Point
+    order: Optional[int]
+    cofactor: Optional[int]
+
+    def __init__(self, curve: EllipticCurve, generator: Point, neutral: Point, order: int = None,
+                 cofactor: int = None):
+        self.curve = curve
+        self.generator = generator
+        self.neutral = neutral
+        self.order = order
+        self.cofactor = cofactor
+
+    def is_neutral(self, point: Point) -> bool:
+        return self.neutral == point