feat(elliptic-curve.ts): update affineOnCurve function to use GroupAf…

…fine union type.
o1-labs · Jul 15, 2024 · b12ca8c · b12ca8c
1 parent f0ab6bf
commit b12ca8c
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/crypto/elliptic-curve.ts b/crypto/elliptic-curve.ts
@@ -452,10 +452,10 @@ const Vesta = createCurveProjective({
 const affineZero: PointAtInfinity = { infinity: true };
 
 function affineOnCurve(g: GroupAffine, p: bigint, a: bigint, b: bigint) {
-  if (infinity) return true;
+  if (g.infinity) return true;
   // y^2 = x^3 + ax + b
-  let x2 = mod(x * x, p);
-  return mod(y * y - x * x2 - a * x - b, p) === 0n;
+  let x2 = mod(g.x * g.x, p);
+  return mod(g.y * g.y - g.x * x2 - a * g.x - b, p) === 0n;
 }
 
 function affineAdd(g: GroupAffine, h: GroupAffine, p: bigint): GroupAffine {