secp256k1Mult static method

Implementation

static Secp256k1Gej secp256k1Mult({
  List<int>? scalarBytes,
  Secp256k1Scalar? scalar,
  Secp256k1Ge? point,
  List<int>? pointBytes,
  // Secp256k1ECmultGenContext? context,
  bool checkScalar = true,
}) {
  if (scalar == null && scalarBytes == null) {
    throw ArgumentException.invalidOperationArguments(
      "secp256k1Mult",
      name: "scalar",
      reason: "Missing scalar or scalar bytes.",
    );
  }
  if (point == null && pointBytes == null) {
    throw ArgumentException.invalidOperationArguments(
      "secp256k1Mult",
      name: "point",
      reason: "Missing point or point bytes.",
    );
  }
  point ??= loadPublicKey(pointBytes!);
  if (point == null) {
    throw ArgumentException.invalidOperationArguments(
      "secp256k1Mult",
      name: "point",
      reason: "Invalid point bytes.",
    );
  }
  bool hasScalar = scalar != null;
  scalar ??= scalarFromBytes(scalarBytes!);
  if (checkScalar && !scCheck(scalar)) {
    throw ArgumentException.invalidOperationArguments(
      "secp256k1MultBase",
      name: "scalar",
      reason: "Invalid scalar bytes.",
    );
  }
  Secp256k1Gej R = Secp256k1Gej();
  Secp256k1.secp256k1ECmultConst(R, point, scalar);
  // Secp256k1Ge mid1 = Secp256k1Ge();
  // Secp256k1.secp256k1GeSetGej(mid1, R);
  if (!hasScalar) scalar.setZero();
  return R;
}