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/*
* cifra - embedded cryptography library
* Written in 2014 by Joseph Birr-Pixton <jpixton@gmail.com>
*
* To the extent possible under law, the author(s) have dedicated all
* copyright and related and neighboring rights to this software to the
* public domain worldwide. This software is distributed without any
* warranty.
*
* You should have received a copy of the CC0 Public Domain Dedication
* along with this software. If not, see
* <http://creativecommons.org/publicdomain/zero/1.0/>.
*/
#ifndef CURVE25519_H
#define CURVE25519_H
#include <stddef.h>
#include <stdint.h>
/**
* Curve25519
* ==========
* This is `curve25519 <http://cr.yp.to/ecdh.html>`_ with switchable
* implementations underneath.
*
* By default tweetnacl is used on hosts, and the implementation
* from μNaCl for Cortex-M0, M3 and M4.
*/
/* .. c:function:: $DECL
* Multiplies `point` by `scalar`, putting the resulting point into `out`. */
void cf_curve25519_mul(uint8_t out[32],
const uint8_t scalar[32],
const uint8_t point[32]);
/* .. c:function:: $DECL
* Multiplies `scalar` by the curve25519 base point, putting the resulting
* point into `out`. */
void cf_curve25519_mul_base(uint8_t out[32], const uint8_t scalar[32]);
#endif
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