Changeset View
Changeset View
Standalone View
Standalone View
sys/crypto/curve25519.h
- This file was added.
/*- | |||||
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD | |||||
* | |||||
* Copyright (c) 2021 The FreeBSD Foundation | |||||
* | |||||
* This software was developed by Ararat River Consulting, LLC under | |||||
* sponsorship from the FreeBSD Foundation. | |||||
* | |||||
* Redistribution and use in source and binary forms, with or without | |||||
* modification, are permitted provided that the following conditions | |||||
* are met: | |||||
* 1. Redistributions of source code must retain the above copyright | |||||
* notice, this list of conditions and the following disclaimer. | |||||
* 2. Redistributions in binary form must reproduce the above copyright | |||||
* notice, this list of conditions and the following disclaimer in the | |||||
* documentation and/or other materials provided with the distribution. | |||||
* | |||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
emaste: "REGENTS"? | |||||
Done Inline ActionsSigh, I must have copied this from the wrong file, I will fix. jhb: Sigh, I must have copied this from the wrong file, I will fix. | |||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
* SUCH DAMAGE. | |||||
*/ | |||||
#ifndef __CRYPTO_CURVE25519_H__ | |||||
#define __CRYPTO_CURVE25519_H__ | |||||
#include <sys/libkern.h> | |||||
#define CURVE25519_KEY_SIZE 32 | |||||
bool curve25519(uint8_t *public, const uint8_t *secret, | |||||
const uint8_t *basepoint); | |||||
bool curve25519_generate_public(uint8_t *public, | |||||
const uint8_t *secret); | |||||
static __inline void | |||||
curve25519_clamp_secret(uint8_t *secret) | |||||
{ | |||||
secret[0] &= 248; | |||||
secret[31] &= 127; | |||||
secret[31] |= 64; | |||||
} | |||||
Done Inline Actionslibsodium handles clamping for you, but I guess it doesn't hurt to be sure. markj: libsodium handles clamping for you, but I guess it doesn't hurt to be sure. | |||||
Done Inline ActionsWireGuard expects to use this function directly, but yes, I noticed libsodium already does this. jhb: WireGuard expects to use this function directly, but yes, I noticed libsodium already does this. | |||||
static __inline void | |||||
curve25519_generate_secret(uint8_t *secret) | |||||
{ | |||||
arc4random_buf(secret, CURVE25519_KEY_SIZE); | |||||
curve25519_clamp_secret(secret); | |||||
} | |||||
#endif /* __CRYPTO_CURVE25519_H__ */ |
"REGENTS"?