jmul_aff.c

/* Copyright 2008-2019 Douglas Wikstrom
 *
 * This file is part of Verificatum Elliptic Curve library (VEC).
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <stdio.h>
#include <gmp.h>
#include "vec.h"

void
vec_jmul_aff(mpz_t rx, mpz_t ry,
             vec_curve *curve,
             mpz_t x, mpz_t y,
             mpz_t scalar) {

  mpz_t RZ;

  mpz_t X;
  mpz_t Y;
  mpz_t Z;

  mpz_init(RZ);

  mpz_init(X);
  mpz_init(Y);
  mpz_init(Z);

  mpz_set(X, x);
  mpz_set(Y, y);

  vec_affj(X, Y, Z);

  curve->jmul(rx, ry, RZ,
              curve,
              X, Y, Z,
              scalar);

  vec_jaff(rx, ry, RZ, curve);

  mpz_clear(Z);
  mpz_clear(Y);
  mpz_clear(X);

  mpz_clear(RZ);

}