1 /****************************************************************************** 2 * 3 * Copyright (C) 2006-2015 Broadcom Corporation 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19 /****************************************************************************** 20 * 21 * This file contains simple pairing algorithms using Elliptic Curve 22 *Cryptography for private public key 23 * 24 ******************************************************************************/ 25 26 #pragma once 27 28 #include "p_256_multprecision.h" 29 30 typedef struct { 31 uint32_t x[KEY_LENGTH_DWORDS_P256]; 32 uint32_t y[KEY_LENGTH_DWORDS_P256]; 33 uint32_t z[KEY_LENGTH_DWORDS_P256]; 34 } Point; 35 36 typedef struct { 37 // curve's coefficients 38 uint32_t a[KEY_LENGTH_DWORDS_P256]; 39 uint32_t b[KEY_LENGTH_DWORDS_P256]; 40 41 // whether a is -3 42 int a_minus3; 43 44 // prime modulus 45 uint32_t p[KEY_LENGTH_DWORDS_P256]; 46 47 // Omega, p = 2^m -omega 48 uint32_t omega[KEY_LENGTH_DWORDS_P256]; 49 50 // base point, a point on E of order r 51 Point G; 52 53 } elliptic_curve_t; 54 55 extern elliptic_curve_t curve; 56 extern elliptic_curve_t curve_p256; 57 58 void ECC_PointMult_Bin_NAF(Point* q, Point* p, uint32_t* n, uint32_t keyLength); 59 60 #define ECC_PointMult(q, p, n, keyLength) \ 61 ECC_PointMult_Bin_NAF(q, p, n, keyLength) 62 63 void p_256_init_curve(uint32_t keyLength); 64
