1198090Srdivacky/*
2198090Srdivacky * Copyright 2009-2021 The OpenSSL Project Authors. All Rights Reserved.
3353358Sdim *
4353358Sdim * Licensed under the Apache License 2.0 (the "License").  You may not use
5353358Sdim * this file except in compliance with the License.  You can obtain a copy
6198090Srdivacky * in the file LICENSE in the source distribution or at
7198090Srdivacky * https://www.openssl.org/source/license.html
8198090Srdivacky */
9198090Srdivacky
10198090Srdivacky#include "internal/cryptlib.h"
11198090Srdivacky#include "crypto/ppc_arch.h"
12218893Sdim#include "ec_local.h"
13198090Srdivacky
14198090Srdivackyvoid ecp_nistz256_mul_mont(unsigned long res[4], const unsigned long a[4],
15198090Srdivacky                           const unsigned long b[4]);
16198090Srdivacky
17198090Srdivackyvoid ecp_nistz256_to_mont(unsigned long res[4], const unsigned long in[4]);
18321369Sdimvoid ecp_nistz256_to_mont(unsigned long res[4], const unsigned long in[4])
19321369Sdim{
20321369Sdim    static const unsigned long RR[] = { 0x0000000000000003U,
21321369Sdim                                        0xfffffffbffffffffU,
22321369Sdim                                        0xfffffffffffffffeU,
23321369Sdim                                        0x00000004fffffffdU };
24321369Sdim
25321369Sdim    ecp_nistz256_mul_mont(res, in, RR);
26321369Sdim}
27321369Sdim
28321369Sdimvoid ecp_nistz256_from_mont(unsigned long res[4], const unsigned long in[4]);
29321369Sdimvoid ecp_nistz256_from_mont(unsigned long res[4], const unsigned long in[4])
30321369Sdim{
31321369Sdim    static const unsigned long one[] = { 1, 0, 0, 0 };
32321369Sdim
33321369Sdim    ecp_nistz256_mul_mont(res, in, one);
34321369Sdim}
35321369Sdim