39        y = int(y, 16)
40        return self.curve.point(x, y)
41
42    def encode_point(self, point):43        x = format(point.x, "x")
44        y = format(point.y, "x")
45        return f"{x},{y}"

33        else:
34            raise ValueError("Invalid operation")
35
36    def decode_point(self, point):37        x, y = point.split(",")
38        x = int(x, 16)
39        y = int(y, 16)

15        public_key = private_key.public_key()
16        return private_key, public_key
17
18    def perform_operation(self, operation, params):19        if operation == "add":
20            point1 = self.decode_point(params["point1"])
21            point2 = self.decode_point(params["point2"])

10        self.curve = ec.SECP256K1()
11        self.backend = default_backend()
12
13    def generate_key_pair(self):14        private_key = ec.generate_private_key(self.curve, self.backend)
15        public_key = private_key.public_key()
16        return private_key, public_key