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Fix edwards assertValidity

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Paul Miller 2023-01-30 07:04:36 +00:00
parent 837aca98c9
commit e57aec63d8
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1 changed files with 1 additions and 1 deletions
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src/abstract/edwards.ts
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@ -184,7 +184,7 @@ export function twistedEdwards(curveDef: CurveType): CurveFn {
const Z4 = modP(Z2 * Z2); // Z⁴
const aX2 = modP(X2 * a); // aX²
const left = modP(Z2 * modP(aX2 + Y2)); // (aX² + Y²)Z²
const right = modP(Z4 * modP(d * X2 * Y2)); // Z⁴ + dX²Y²
const right = modP(Z4 + modP(d * modP(X2 * Y2))); // Z⁴ + dX²Y²
if (left !== right) throw new Error('bad point: equation left != right (1)');
// In Extended coordinates we also have T, which is x*y=T/Z: check X*Y == Z*T
const XY = modP(X * Y);