Add affine multiply and move neutral to curve class.

1 files changed, 3 insertions, 8 deletions

diff --git a/pyecsca/ec/params.py b/pyecsca/ec/params.py
index 41d8a78..2b0538e 100644
--- a/pyecsca/ec/params.py
+++ b/pyecsca/ec/params.py
@@ -11,29 +11,24 @@ class DomainParameters(object):
     """Domain parameters which specify a subgroup on an elliptic curve."""
     curve: EllipticCurve
     generator: Point
-    neutral: Point
     order: int
     cofactor: int
     name: Optional[str]
     category: Optional[str]
 
-    def __init__(self, curve: EllipticCurve, generator: Point, neutral: Point, order: int,
+    def __init__(self, curve: EllipticCurve, generator: Point, order: int,
                  cofactor: int, name: Optional[str] = None, category: Optional[str] = None):
         self.curve = curve
         self.generator = generator
-        self.neutral = neutral
         self.order = order
         self.cofactor = cofactor
         self.name = name
         self.category = category
 
-    def is_neutral(self, point: Point) -> bool:
-        return self.neutral == point
-
     def __eq__(self, other):
         if not isinstance(other, DomainParameters):
             return False
-        return self.curve == other.curve and self.generator == other.generator and self.neutral == other.neutral and self.order == other.order and self.cofactor == other.cofactor
+        return self.curve == other.curve and self.generator == other.generator and self.order == other.order and self.cofactor == other.cofactor
 
     def __get_name(self):
         if self.name and self.category:
@@ -51,4 +46,4 @@ class DomainParameters(object):
         return f"{self.__class__.__name__}({name})"
 
     def __repr__(self):
-        return f"{self.__class__.__name__}({self.curve!r}, {self.generator!r}, {self.neutral!r}, {self.order}, {self.cofactor})"
+        return f"{self.__class__.__name__}({self.curve!r}, {self.generator!r}, {self.order}, {self.cofactor})"