1 /* $OpenBSD: curve25519-generic.c,v 1.2 2019/05/11 15:55:52 tb Exp $ */
2 /*
3 * Copyright (c) 2015, Google Inc.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
12 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
14 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
15 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 /*
19 * This code is mostly taken from the ref10 version of Ed25519 in SUPERCOP
20 * 20141124 (http://bench.cr.yp.to/supercop.html). That code is released as
21 * public domain but this file has the ISC license just to keep licencing
22 * simple.
23 *
24 * The field functions are shared by Ed25519 and X25519 where possible.
25 */
26
27 #include "curve25519_internal.h"
28
29 void
x25519_scalar_mult(uint8_t out[32],const uint8_t scalar[32],const uint8_t point[32])30 x25519_scalar_mult(uint8_t out[32], const uint8_t scalar[32],
31 const uint8_t point[32])
32 {
33 x25519_scalar_mult_generic(out, scalar, point);
34 }
35