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
14 void ecp_nistz256_mul_mont(unsigned long res[4], const unsigned long a[4],
15 const unsigned long b[4]);
16
17 void ecp_nistz256_to_mont(unsigned long res[4], const unsigned long in[4]);
ecp_nistz256_to_mont(unsigned long res[4],const unsigned long in[4])18 void 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
28 void ecp_nistz256_from_mont(unsigned long res[4], const unsigned long in[4]);
ecp_nistz256_from_mont(unsigned long res[4],const unsigned long in[4])29 void 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
