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/******************************************************************************
*
* 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 <cstdbool>
#include "p_256_multprecision.h"
typedef struct {
uint32_t x[KEY_LENGTH_DWORDS_P256];
uint32_t y[KEY_LENGTH_DWORDS_P256];
uint32_t z[KEY_LENGTH_DWORDS_P256];
} Point;
typedef struct {
// curve's coefficients
uint32_t a[KEY_LENGTH_DWORDS_P256];
uint32_t b[KEY_LENGTH_DWORDS_P256];
// whether a is -3
int a_minus3;
// prime modulus
uint32_t p[KEY_LENGTH_DWORDS_P256];
// Omega, p = 2^m -omega
uint32_t 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;
bool ECC_ValidatePoint(const Point& p);
void ECC_PointMult_Bin_NAF(Point* q, Point* p, uint32_t* 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_t keyLength);
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