/****************************************************************************** * * Copyright 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);