early-access version 1255

externals/libressl/crypto/curve25519/curve25519-generic.c

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+/*	$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);
+}