From b01f37d1dfaa447f53f44fb9ced1e7c39251d7de Mon Sep 17 00:00:00 2001
From: J08nY
Date: Thu, 31 Aug 2023 16:24:28 +0200
Subject: Actually optimize ZVP precomp.

---
 pyecsca/sca/re/zvp.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pyecsca/sca/re/zvp.py b/pyecsca/sca/re/zvp.py
index 892b0a8..0896270 100644
--- a/pyecsca/sca/re/zvp.py
+++ b/pyecsca/sca/re/zvp.py
@@ -158,6 +158,8 @@ def subs_dlog(poly: Poly, k: int, curve: EllipticCurve):
     for term in poly.terms():
         u_power = term[0][X2i]
         v_power = max_degree - u_power
+        if (u_power, v_power) in uv_factors:
+            continue
         uv_factors[(u_power, v_power)] = u_powers[u_power] * v_powers[v_power]
 
     res = 0
-- 
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