From fc8379d9edfa4b1cf63c9f008c8a2d9deaf7024a Mon Sep 17 00:00:00 2001
From: Weikeng Chen <w.k@berkeley.edu>
Date: Tue, 5 Sep 2023 05:39:34 -0700
Subject: [PATCH] Add the small subgroup power for BN254 (#163)

Co-authored-by: mmagician <marcin.gorny.94@protonmail.com>
Co-authored-by: Pratyush Mishra <pratyushmishra@berkeley.edu>
---
 bn254/src/fields/fr.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/bn254/src/fields/fr.rs b/bn254/src/fields/fr.rs
index b79e33f..dae25ff 100644
--- a/bn254/src/fields/fr.rs
+++ b/bn254/src/fields/fr.rs
@@ -3,5 +3,7 @@ use ark_ff::fields::{Fp256, MontBackend, MontConfig};
 #[derive(MontConfig)]
 #[modulus = "21888242871839275222246405745257275088548364400416034343698204186575808495617"]
 #[generator = "5"]
+#[small_subgroup_base = "3"]
+#[small_subgroup_power = "2"]
 pub struct FrConfig;
 pub type Fr = Fp256<MontBackend<FrConfig, 4>>;