xref: /openbsd-src/lib/libcrypto/curve25519/curve25519-generic.c (revision 694cb79677271ac3a5dc5cac952bb0504290ad6c)

/*	$OpenBSD: curve25519-generic.c,v 1.2 2019/05/11 15:55:52 tb Exp $ */
/*
 * Copyright (c) 2015, Google Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/*
 * This code is mostly taken from the ref10 version of Ed25519 in SUPERCOP
 * 20141124 (http://bench.cr.yp.to/supercop.html). That code is released as
 * public domain but this file has the ISC license just to keep licencing
 * simple.
 *
 * The field functions are shared by Ed25519 and X25519 where possible.
 */

#include "curve25519_internal.h"

void
x25519_scalar_mult(uint8_t out[32], const uint8_t scalar[32],
    const uint8_t point[32])
{
	x25519_scalar_mult_generic(out, scalar, point);
}