mirror of
https://github.com/Fledge68/WiiFlow_Lite.git
synced 2024-11-27 13:44:15 +01:00
114 lines
2.9 KiB
C
114 lines
2.9 KiB
C
/* ge_operations.h
|
|
*
|
|
* Copyright (C) 2006-2021 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
|
|
*/
|
|
|
|
|
|
/* Based On Daniel J Bernstein's ed25519 Public Domain ref10 work. */
|
|
|
|
#ifndef WOLF_CRYPT_GE_OPERATIONS_H
|
|
#define WOLF_CRYPT_GE_OPERATIONS_H
|
|
|
|
#include <libwolfssl/wolfcrypt/settings.h>
|
|
|
|
#ifdef HAVE_ED25519
|
|
|
|
#include <libwolfssl/wolfcrypt/fe_operations.h>
|
|
|
|
/*
|
|
ge 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 = -121665/121666.
|
|
|
|
Representations:
|
|
ge_p2 (projective): (X:Y:Z) satisfying x=X/Z, y=Y/Z
|
|
ge_p3 (extended): (X:Y:Z:T) satisfying x=X/Z, y=Y/Z, XY=ZT
|
|
ge_p1p1 (completed): ((X:Z),(Y:T)) satisfying x=X/Z, y=Y/T
|
|
ge_precomp (Duif): (y+x,y-x,2dxy)
|
|
*/
|
|
|
|
#ifdef ED25519_SMALL
|
|
typedef byte ge[F25519_SIZE];
|
|
#elif defined(CURVED25519_ASM_64BIT)
|
|
typedef sword64 ge[4];
|
|
#elif defined(CURVED25519_ASM_32BIT)
|
|
typedef sword32 ge[8];
|
|
#elif defined(CURVED25519_128BIT)
|
|
typedef sword64 ge[5];
|
|
#else
|
|
typedef sword32 ge[10];
|
|
#endif
|
|
|
|
typedef struct {
|
|
ge X;
|
|
ge Y;
|
|
ge Z;
|
|
} ge_p2;
|
|
|
|
typedef struct {
|
|
ge X;
|
|
ge Y;
|
|
ge Z;
|
|
ge T;
|
|
} ge_p3;
|
|
|
|
|
|
WOLFSSL_LOCAL int ge_compress_key(byte* out, const byte* xIn, const byte* yIn,
|
|
word32 keySz);
|
|
WOLFSSL_LOCAL int ge_frombytes_negate_vartime(ge_p3 *,const unsigned char *);
|
|
|
|
WOLFSSL_LOCAL int ge_double_scalarmult_vartime(ge_p2 *,const unsigned char *,
|
|
const ge_p3 *,const unsigned char *);
|
|
WOLFSSL_LOCAL void ge_scalarmult_base(ge_p3 *,const unsigned char *);
|
|
WOLFSSL_LOCAL void sc_reduce(byte* s);
|
|
WOLFSSL_LOCAL void sc_muladd(byte* s, const byte* a, const byte* b,
|
|
const byte* c);
|
|
WOLFSSL_LOCAL void ge_tobytes(unsigned char *,const ge_p2 *);
|
|
WOLFSSL_LOCAL void ge_p3_tobytes(unsigned char *,const ge_p3 *);
|
|
|
|
|
|
#ifndef ED25519_SMALL
|
|
typedef struct {
|
|
ge X;
|
|
ge Y;
|
|
ge Z;
|
|
ge T;
|
|
} ge_p1p1;
|
|
|
|
typedef struct {
|
|
ge yplusx;
|
|
ge yminusx;
|
|
ge xy2d;
|
|
} ge_precomp;
|
|
|
|
typedef struct {
|
|
ge YplusX;
|
|
ge YminusX;
|
|
ge Z;
|
|
ge T2d;
|
|
} ge_cached;
|
|
|
|
#endif /* !ED25519_SMALL */
|
|
|
|
#endif /* HAVE_ED25519 */
|
|
|
|
#endif /* WOLF_CRYPT_GE_OPERATIONS_H */
|