ttssh2/ttxssh/ed25519_ge25519.h

/*
 * (C) 2004-2017 TeraTerm Project
 * All rights reserved.
 *
 * 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.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHORS 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 __ED25519_GE25519_H
#define __ED25519_GE25519_H

#include "ed25519_fe25519.h"
#include "ed25519_sc25519.h"

#define ge25519                           crypto_sign_ed25519_ref_ge25519
#define ge25519_base                      crypto_sign_ed25519_ref_ge25519_base
#define ge25519_unpackneg_vartime         crypto_sign_ed25519_ref_unpackneg_vartime
#define ge25519_pack                      crypto_sign_ed25519_ref_pack
#define ge25519_isneutral_vartime         crypto_sign_ed25519_ref_isneutral_vartime
#define ge25519_double_scalarmult_vartime crypto_sign_ed25519_ref_double_scalarmult_vartime
#define ge25519_scalarmult_base           crypto_sign_ed25519_ref_scalarmult_base

typedef struct
{
  fe25519 x;
  fe25519 y;
  fe25519 z;
  fe25519 t;
} ge25519;

extern const ge25519 ge25519_base;

int ge25519_unpackneg_vartime(ge25519 *r, const unsigned char p[32]);

void ge25519_pack(unsigned char r[32], const ge25519 *p);

int ge25519_isneutral_vartime(const ge25519 *p);

void ge25519_double_scalarmult_vartime(ge25519 *r, const ge25519 *p1, const sc25519 *s1, const ge25519 *p2, const sc25519 *s2);

void ge25519_scalarmult_base(ge25519 *r, const sc25519 *s);

#endif