arduino-esp32/tools/sdk/include/bluedroid/p_256_ecc_pp.h
Me No Dev d02c1c786e Update IDF, fix SS definition, add custom partitions and debug level selection (#174)
* Add build time partitions compilation

* Fix wrong definition of SS pin

* Add support for core debug level selection

* update idf libs
2017-02-06 15:17:11 +02:00

66 lines
1.9 KiB
C

/******************************************************************************
*
* Copyright (C) 2006-2015 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/******************************************************************************
*
* This file contains simple pairing algorithms using Elliptic Curve Cryptography for private public key
*
******************************************************************************/
#pragma once
#include "p_256_multprecision.h"
typedef unsigned long DWORD;
typedef struct {
DWORD x[KEY_LENGTH_DWORDS_P256];
DWORD y[KEY_LENGTH_DWORDS_P256];
DWORD z[KEY_LENGTH_DWORDS_P256];
} Point;
typedef struct {
// curve's coefficients
DWORD a[KEY_LENGTH_DWORDS_P256];
DWORD b[KEY_LENGTH_DWORDS_P256];
//whether a is -3
int a_minus3;
// prime modulus
DWORD p[KEY_LENGTH_DWORDS_P256];
// Omega, p = 2^m -omega
DWORD omega[KEY_LENGTH_DWORDS_P256];
// base point, a point on E of order r
Point G;
} elliptic_curve_t;
extern elliptic_curve_t curve;
extern elliptic_curve_t curve_p256;
void ECC_PointMult_Bin_NAF(Point *q, Point *p, DWORD *n, uint32_t keyLength);
#define ECC_PointMult(q, p, n, keyLength) ECC_PointMult_Bin_NAF(q, p, n, keyLength)
void p_256_init_curve(UINT32 keyLength);