feat(galois): wontfix partial doubleAndAdd (#1864)

comment on spearbit-audits/review-union#8 gnark comment Consensys/gnark#1058
unionlabs · May 2, 2024 · 2906611 · 2906611
2 parents a8e8417 + 143a03d
commit 2906611
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/galoisd/pkg/emulated/g2.go b/galoisd/pkg/emulated/g2.go
@@ -417,6 +417,10 @@ func (e *EmulatedAPI) Psi(q *gadget.G2Affine) *gadget.G2Affine {
 	return &point
 }
 
+// Scalar multiplication by bn254 seed.
+// The input point must not be the infinity point.
+
+// NOTE: we only use this function in cofactor clearing in hashing to curve.
 func (e *EmulatedAPI) ScalarMulBySeed(q *gadget.G2Affine) *gadget.G2Affine {
 	z := e.Double(q)
 	t0 := e.Add(q, z)