mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-12-23 18:31:56 +01:00
207 lines
7.5 KiB
C
207 lines
7.5 KiB
C
/* fe_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
|
|
*/
|
|
|
|
|
|
#ifndef WOLF_CRYPT_FE_OPERATIONS_H
|
|
#define WOLF_CRYPT_FE_OPERATIONS_H
|
|
|
|
#include <libs/libwolfssl/wolfcrypt/settings.h>
|
|
|
|
#if defined(HAVE_CURVE25519) || defined(HAVE_ED25519)
|
|
|
|
#include <libs/libwolfssl/wolfcrypt/types.h>
|
|
|
|
#if defined(USE_INTEL_SPEEDUP) && !defined(NO_CURVED25519_X64)
|
|
#define CURVED25519_X64
|
|
#elif defined(HAVE___UINT128_T) && !defined(NO_CURVED25519_128BIT)
|
|
#define CURVED25519_128BIT
|
|
#endif
|
|
|
|
#if defined(CURVED25519_X64)
|
|
#define CURVED25519_ASM_64BIT
|
|
#define CURVED25519_ASM
|
|
#endif
|
|
#if defined(WOLFSSL_ARMASM)
|
|
#ifdef __aarch64__
|
|
#define CURVED25519_ASM_64BIT
|
|
#else
|
|
#define CURVED25519_ASM_32BIT
|
|
#endif
|
|
#define CURVED25519_ASM
|
|
#endif
|
|
|
|
/*
|
|
fe means field element.
|
|
Here the field is \Z/(2^255-19).
|
|
An element t, entries t[0]...t[9], represents the integer
|
|
t[0]+2^26 t[1]+2^51 t[2]+2^77 t[3]+2^102 t[4]+...+2^230 t[9].
|
|
Bounds on each t[i] vary depending on context.
|
|
*/
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#if defined(CURVE25519_SMALL) || defined(ED25519_SMALL)
|
|
#define F25519_SIZE 32
|
|
|
|
WOLFSSL_LOCAL void lm_copy(byte*, const byte*);
|
|
WOLFSSL_LOCAL void lm_add(byte*, const byte*, const byte*);
|
|
WOLFSSL_LOCAL void lm_sub(byte*, const byte*, const byte*);
|
|
WOLFSSL_LOCAL void lm_neg(byte*,const byte*);
|
|
WOLFSSL_LOCAL void lm_invert(byte*, const byte*);
|
|
WOLFSSL_LOCAL void lm_mul(byte*,const byte*,const byte*);
|
|
#endif
|
|
|
|
|
|
#if !defined(FREESCALE_LTC_ECC)
|
|
WOLFSSL_LOCAL void fe_init(void);
|
|
|
|
WOLFSSL_LOCAL int curve25519(byte * q, const byte * n, const byte * p);
|
|
#endif
|
|
|
|
/* default to be faster but take more memory */
|
|
#if !defined(CURVE25519_SMALL) || !defined(ED25519_SMALL)
|
|
|
|
#ifdef CURVED25519_ASM_64BIT
|
|
typedef sword64 fe[4];
|
|
#elif defined(CURVED25519_ASM_32BIT)
|
|
typedef sword32 fe[8];
|
|
#elif defined(CURVED25519_128BIT)
|
|
typedef sword64 fe[5];
|
|
#else
|
|
typedef sword32 fe[10];
|
|
#endif
|
|
|
|
WOLFSSL_LOCAL void fe_copy(fe, const fe);
|
|
WOLFSSL_LOCAL void fe_add(fe, const fe, const fe);
|
|
WOLFSSL_LOCAL void fe_neg(fe,const fe);
|
|
WOLFSSL_LOCAL void fe_sub(fe, const fe, const fe);
|
|
WOLFSSL_LOCAL void fe_invert(fe, const fe);
|
|
WOLFSSL_LOCAL void fe_mul(fe,const fe,const fe);
|
|
|
|
|
|
/* Based On Daniel J Bernstein's curve25519 and ed25519 Public Domain ref10
|
|
work. */
|
|
|
|
WOLFSSL_LOCAL void fe_0(fe);
|
|
WOLFSSL_LOCAL void fe_1(fe);
|
|
WOLFSSL_LOCAL int fe_isnonzero(const fe);
|
|
WOLFSSL_LOCAL int fe_isnegative(const fe);
|
|
WOLFSSL_LOCAL void fe_tobytes(unsigned char *, const fe);
|
|
WOLFSSL_LOCAL void fe_sq(fe, const fe);
|
|
WOLFSSL_LOCAL void fe_sq2(fe,const fe);
|
|
WOLFSSL_LOCAL void fe_frombytes(fe,const unsigned char *);
|
|
WOLFSSL_LOCAL void fe_cswap(fe, fe, int);
|
|
WOLFSSL_LOCAL void fe_mul121666(fe,fe);
|
|
WOLFSSL_LOCAL void fe_cmov(fe,const fe, int);
|
|
WOLFSSL_LOCAL void fe_pow22523(fe,const fe);
|
|
|
|
/* 64 type needed for SHA512 */
|
|
WOLFSSL_LOCAL word64 load_3(const unsigned char *in);
|
|
WOLFSSL_LOCAL word64 load_4(const unsigned char *in);
|
|
|
|
#ifdef CURVED25519_ASM
|
|
WOLFSSL_LOCAL void fe_ge_to_p2(fe rx, fe ry, fe rz, const fe px, const fe py,
|
|
const fe pz, const fe pt);
|
|
WOLFSSL_LOCAL void fe_ge_to_p3(fe rx, fe ry, fe rz, fe rt, const fe px,
|
|
const fe py, const fe pz, const fe pt);
|
|
WOLFSSL_LOCAL void fe_ge_dbl(fe rx, fe ry, fe rz, fe rt, const fe px,
|
|
const fe py, const fe pz);
|
|
WOLFSSL_LOCAL void fe_ge_madd(fe rx, fe ry, fe rz, fe rt, const fe px,
|
|
const fe py, const fe pz, const fe pt,
|
|
const fe qxy2d, const fe qyplusx,
|
|
const fe qyminusx);
|
|
WOLFSSL_LOCAL void fe_ge_msub(fe rx, fe ry, fe rz, fe rt, const fe px,
|
|
const fe py, const fe pz, const fe pt,
|
|
const fe qxy2d, const fe qyplusx,
|
|
const fe qyminusx);
|
|
WOLFSSL_LOCAL void fe_ge_add(fe rx, fe ry, fe rz, fe rt, const fe px,
|
|
const fe py, const fe pz, const fe pt, const fe qz,
|
|
const fe qt2d, const fe qyplusx,
|
|
const fe qyminusx);
|
|
WOLFSSL_LOCAL void fe_ge_sub(fe rx, fe ry, fe rz, fe rt, const fe px,
|
|
const fe py, const fe pz, const fe pt, const fe qz,
|
|
const fe qt2d, const fe qyplusx,
|
|
const fe qyminusx);
|
|
WOLFSSL_LOCAL void fe_cmov_table(fe* r, fe* base, signed char b);
|
|
#endif /* CURVED25519_ASM */
|
|
#endif /* !CURVE25519_SMALL || !ED25519_SMALL */
|
|
|
|
/* Use less memory and only 32bit types or less, but is slower
|
|
Based on Daniel Beer's public domain work. */
|
|
#if defined(CURVE25519_SMALL) || defined(ED25519_SMALL)
|
|
static const byte c25519_base_x[F25519_SIZE] = {9};
|
|
static const byte f25519_zero[F25519_SIZE] = {0};
|
|
static const byte f25519_one[F25519_SIZE] = {1};
|
|
static const byte fprime_zero[F25519_SIZE] = {0};
|
|
static const byte fprime_one[F25519_SIZE] = {1};
|
|
|
|
WOLFSSL_LOCAL void fe_load(byte *x, word32 c);
|
|
WOLFSSL_LOCAL void fe_normalize(byte *x);
|
|
WOLFSSL_LOCAL void fe_inv__distinct(byte *r, const byte *x);
|
|
|
|
/* Conditional copy. If condition == 0, then zero is copied to dst. If
|
|
* condition == 1, then one is copied to dst. Any other value results in
|
|
* undefined behavior.
|
|
*/
|
|
WOLFSSL_LOCAL void fe_select(byte *dst, const byte *zero, const byte *one,
|
|
byte condition);
|
|
|
|
/* Multiply a point by a small constant. The two pointers are not
|
|
* required to be distinct.
|
|
*
|
|
* The constant must be less than 2^24.
|
|
*/
|
|
WOLFSSL_LOCAL void fe_mul_c(byte *r, const byte *a, word32 b);
|
|
WOLFSSL_LOCAL void fe_mul__distinct(byte *r, const byte *a, const byte *b);
|
|
|
|
/* Compute one of the square roots of the field element, if the element
|
|
* is square. The other square is -r.
|
|
*
|
|
* If the input is not square, the returned value is a valid field
|
|
* element, but not the correct answer. If you don't already know that
|
|
* your element is square, you should square the return value and test.
|
|
*/
|
|
WOLFSSL_LOCAL void fe_sqrt(byte *r, const byte *x);
|
|
|
|
/* Conditional copy. If condition == 0, then zero is copied to dst. If
|
|
* condition == 1, then one is copied to dst. Any other value results in
|
|
* undefined behavior.
|
|
*/
|
|
WOLFSSL_LOCAL void fprime_select(byte *dst, const byte *zero, const byte *one,
|
|
byte condition);
|
|
WOLFSSL_LOCAL void fprime_add(byte *r, const byte *a, const byte *modulus);
|
|
WOLFSSL_LOCAL void fprime_sub(byte *r, const byte *a, const byte *modulus);
|
|
WOLFSSL_LOCAL void fprime_mul(byte *r, const byte *a, const byte *b,
|
|
const byte *modulus);
|
|
WOLFSSL_LOCAL void fprime_copy(byte *x, const byte *a);
|
|
|
|
#endif /* CURVE25519_SMALL || ED25519_SMALL */
|
|
|
|
#ifdef __cplusplus
|
|
} /* extern "C" */
|
|
#endif
|
|
|
|
#endif /* HAVE_CURVE25519 || HAVE_ED25519 */
|
|
|
|
#endif /* WOLF_CRYPT_FE_OPERATIONS_H */
|