1/*
2 * Copyright 2009-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License").  You may not use
5 * this file except in compliance with the License.  You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include "internal/cryptlib.h"
11#include "crypto/ppc_arch.h"
12#include "ec_local.h"
13
14void ecp_nistz256_mul_mont(unsigned long res[4], const unsigned long a[4],
15                           const unsigned long b[4]);
16
17void ecp_nistz256_to_mont(unsigned long res[4], const unsigned long in[4]);
18void ecp_nistz256_to_mont(unsigned long res[4], const unsigned long in[4])
19{
20    static const unsigned long RR[] = { 0x0000000000000003U,
21                                        0xfffffffbffffffffU,
22                                        0xfffffffffffffffeU,
23                                        0x00000004fffffffdU };
24
25    ecp_nistz256_mul_mont(res, in, RR);
26}
27
28void ecp_nistz256_from_mont(unsigned long res[4], const unsigned long in[4]);
29void ecp_nistz256_from_mont(unsigned long res[4], const unsigned long in[4])
30{
31    static const unsigned long one[] = { 1, 0, 0, 0 };
32
33    ecp_nistz256_mul_mont(res, in, one);
34}
35