crypto/ec/ecp_ppc.c

   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]);
  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]);
  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 }