mirror of
https://github.com/Fledge68/WiiFlow_Lite.git
synced 2024-11-01 09:05:06 +01:00
87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
/* ge_448.h
|
|
*
|
|
* Copyright (C) 2006-2020 wolfSSL Inc.
|
|
*
|
|
* This file is part of wolfSSL.
|
|
*
|
|
* wolfSSL is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* wolfSSL is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
|
|
*/
|
|
|
|
|
|
#ifndef WOLF_CRYPT_GE_448_H
|
|
#define WOLF_CRYPT_GE_448_H
|
|
|
|
#include <libwolfssl/wolfcrypt/settings.h>
|
|
|
|
#ifdef HAVE_ED448
|
|
|
|
#include <libwolfssl/wolfcrypt/fe_448.h>
|
|
|
|
/*
|
|
ge448 means group element.
|
|
|
|
Here the group is the set of pairs (x,y) of field elements (see fe.h)
|
|
satisfying -x^2 + y^2 = 1 + d x^2y^2
|
|
where d = -39081.
|
|
|
|
Representations:
|
|
ge448_p2 (projective) : (X:Y:Z) satisfying x=X/Z, y=Y/Z
|
|
ge448_precomp (affine): (x,y)
|
|
*/
|
|
|
|
#ifdef ED448_SMALL
|
|
typedef byte ge448;
|
|
#define GE448_WORDS 56
|
|
#elif defined(CURVED448_128BIT)
|
|
typedef int64_t ge448;
|
|
#define GE448_WORDS 8
|
|
#else
|
|
typedef int32_t ge448;
|
|
#define GE448_WORDS 16
|
|
#endif
|
|
|
|
typedef struct {
|
|
ge448 X[GE448_WORDS];
|
|
ge448 Y[GE448_WORDS];
|
|
ge448 Z[GE448_WORDS];
|
|
} ge448_p2;
|
|
|
|
|
|
WOLFSSL_LOCAL int ge448_compress_key(byte*, const byte*, const byte*);
|
|
WOLFSSL_LOCAL int ge448_from_bytes_negate_vartime(ge448_p2 *,
|
|
const unsigned char *);
|
|
|
|
WOLFSSL_LOCAL int ge448_double_scalarmult_vartime(ge448_p2 *,
|
|
const unsigned char *,
|
|
const ge448_p2 *,
|
|
const unsigned char *);
|
|
WOLFSSL_LOCAL void ge448_scalarmult_base(ge448_p2 *, const unsigned char *);
|
|
WOLFSSL_LOCAL void sc448_reduce(byte*);
|
|
WOLFSSL_LOCAL void sc448_muladd(byte*, const byte*, const byte*, const byte*);
|
|
WOLFSSL_LOCAL void ge448_to_bytes(unsigned char *, const ge448_p2 *);
|
|
|
|
|
|
#ifndef ED448_SMALL
|
|
typedef struct {
|
|
ge448 x[GE448_WORDS];
|
|
ge448 y[GE448_WORDS];
|
|
} ge448_precomp;
|
|
|
|
#endif /* !ED448_SMALL */
|
|
|
|
#endif /* HAVE_ED448 */
|
|
|
|
#endif /* WOLF_CRYPT_GE_448_H */
|