ttssh2/ttxssh/ed25519_ge25519.h

/*
Copyright (c) 2004-2014 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 AUTHOR ``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 AUTHOR 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;

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